{"id":824,"date":"2022-01-16T17:39:05","date_gmt":"2022-01-16T15:39:05","guid":{"rendered":"https:\/\/aitanachem.com\/solid-surface\/iso-npg-resin\/"},"modified":"2026-07-28T16:29:42","modified_gmt":"2026-07-28T14:29:42","slug":"iso-npg-resin","status":"publish","type":"page","link":"https:\/\/aitanachem.com\/en\/solid-surface\/iso-npg-resin\/","title":{"rendered":"ISO-NPG resin: isophthalic resin for solid surface production"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"824\" class=\"elementor elementor-824 elementor-121\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-18116f93 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"18116f93\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div 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81.2 56.1 130.5 0 101.8-84.9 184.6-186.6 184.6zm101.2-138.2c-5.5-2.8-32.8-16.2-37.9-18-5.1-1.9-8.8-2.8-12.5 2.8-3.7 5.6-14.3 18-17.6 21.8-3.2 3.7-6.5 4.2-12 1.4-32.6-16.3-54-29.1-75.5-66-5.7-9.8 5.7-9.1 16.3-30.3 1.8-3.7.9-6.9-.5-9.7-1.4-2.8-12.5-30.1-17.1-41.2-4.5-10.8-9.1-9.3-12.5-9.5-3.2-.2-6.9-.2-10.6-.2-3.7 0-9.7 1.4-14.8 6.9-5.1 5.6-19.4 19-19.4 46.3 0 27.3 19.9 53.7 22.6 57.4 2.8 3.7 39.1 59.7 94.8 83.8 35.2 15.2 49 16.5 66.6 13.9 10.7-1.6 32.8-13.4 37.4-26.4 4.6-13 4.6-24.1 3.2-26.4-1.3-2.5-5-3.9-10.5-6.6z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-share-btn__text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__title\">\n\t\t\t\t\t\t\t\t\t\tWhatsApp\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_email\" role=\"button\" tabindex=\"0\" aria-label=\"Share on email\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-envelope\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-share-btn__text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__title\">\n\t\t\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0aa56e9 elementor-align-left elementor-widget elementor-widget-global elementor-global-1065 elementor-global-643 elementor-widget-breadcrumbs\" data-id=\"0aa56e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"breadcrumbs.default\">\n\t\t\t\t\t<p id=\"breadcrumbs\"><span><span><a href=\"https:\/\/aitanachem.com\/en\/\">Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-874a5d0 elementor-widget elementor-widget-text-editor\" data-id=\"874a5d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>ISO-NPG resin (isophthalic \u2013 neopentyl glycol) is an <strong>unsaturated polyester resin<\/strong> <strong>specially recommended for the manufacturing of solid surface products<\/strong>. Formulated from isophthalic acid and neopentyl glycol, it delivers higher reactivity and high rigidity once cured, exhibiting outstanding performance against the rigorous mechanical and chemical demands of solid surfaces<span data-path-to-node=\"12,4\">. At AITANACHEM, we supply high-performance ISO-NPG polyester resins, available pre-accelerated or unaccelerated according to the operational requirements of your production process<\/span><span data-path-to-node=\"12,6\">. <strong>We offer an ISO-NPG resin specifically engineered to achieve fast wetting of mineral fillers without spiking the viscosity, allowing high filler loading rates in the mould.<\/strong><\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de83353 elementor-widget elementor-widget-image\" data-id=\"de83353\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"563\" src=\"https:\/\/aitanachem.com\/wp-content\/uploads\/2022\/01\/Resina-ISO-NPG-768x563.webp\" class=\"attachment-medium_large size-medium_large wp-image-755\" alt=\"iso-npg-resin\" srcset=\"https:\/\/aitanachem.com\/wp-content\/uploads\/2022\/01\/Resina-ISO-NPG-768x563.webp 768w, https:\/\/aitanachem.com\/wp-content\/uploads\/2022\/01\/Resina-ISO-NPG-300x220.webp 300w, https:\/\/aitanachem.com\/wp-content\/uploads\/2022\/01\/Resina-ISO-NPG.webp 817w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a6163af elementor-widget elementor-widget-heading\" data-id=\"a6163af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is ISO-NPG resin?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0d572ab elementor-widget elementor-widget-text-editor\" data-id=\"0d572ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The name sums up its chemical composition: <strong>ISO<\/strong> stands for <strong>isophthalic<\/strong> acid and <strong>NPG<\/strong> for <strong>neopentyl glycol<\/strong>. It is an unsaturated polyester resin \u2014 a thermosetting polymer whose curing process is irreversible: once cross-linked, it cannot return to its initial liquid state.<\/p>\n<p>It is produced by esterification of acids or anhydrides with polyhydric alcohols (glycols); subsequently, a monomer (typically styrene) is added to adjust viscosity and processing characteristics<span data-path-to-node=\"15,2\">. The ratio between unsaturated components (which provide reactivity and stiffness) and saturated ones (isophthalic or orthophthalic) determines the final properties: higher unsaturation yields a more reactive and rigid cured polymer<\/span><span data-path-to-node=\"15,4\">.<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d8ab708 elementor-widget elementor-widget-heading\" data-id=\"d8ab708\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Additivation: MMA and other functional additives<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-414d767 elementor-widget elementor-widget-text-editor\" data-id=\"414d767\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>To enhance the surface hardness and scratch resistance of the finished composite, ISO-NPG resin can be modified with MMA (methyl methacrylate)<\/strong><span data-path-to-node=\"17,2\"><strong>.<\/strong> Depending on project specifications, UV light absorbers, antibacterial additives, wetting agents, and air-release additives are also incorporated<\/span><span data-path-to-node=\"17,4\">. Resins can be supplied pre-accelerated or non-promoted<\/span><span data-path-to-node=\"17,6\">.<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e08df69 elementor-widget elementor-widget-heading\" data-id=\"e08df69\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ISO-NPG resin in solid surface manufacturing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2533bb5 elementor-widget elementor-widget-text-editor\" data-id=\"2533bb5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>ISO-NPG resin is one of the three core ingredients of &#8220;pure&#8221; solid surface<span data-path-to-node=\"20,2\">. Unlike conventional orthophthalic resins, the chemical structure of the isophthalic polyester resin modified with NPG <strong>provides a denser three-dimensional cross-linked network that resists water penetration and chemical attack, preventing common field failures in humid environments such as washbasins, vanity tops, kitchen countertops, and bathtubs<\/strong><\/span><strong>.<\/strong><\/p>\n<p>In composite materials manufacturing (solid surface), the liquid polymer matrix \u2014which binds the <a href=\"https:\/\/aitanachem.com\/en\/solid-surface\/aluminum-trihydrate-ath\/\" target=\"_blank\" rel=\"noopener\"><strong><u>aluminum trihydrate (ATH)<\/u><\/strong><\/a> mineral filler and <a href=\"https:\/\/aitanachem.com\/en\/solid-surface\/pigment-pastes\/\" target=\"_blank\" rel=\"noopener\"><strong><u>pigment pastes<\/u><\/strong><\/a> for coloration\u2014 determines the final strength of the final product. <strong>ISO-NPG resin is the benchmark polyester matrix recommended for producing \u201cpure\u201d solid surface (compliant with ISO 19712:2013 standard) and ungelcoated sanitaryware.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8640ffa elementor-widget elementor-widget-heading\" data-id=\"8640ffa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Advantages of ISO-NPG resin over orthophthalic (ortho) resin in solid surface production<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53b2a95 elementor-widget elementor-widget-text-editor\" data-id=\"53b2a95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Using ISO-NPG polyester resin delivers decisive physical and chemical advantages over standard orthophthalic resin, marking a clear distinction in laboratory quality tests and, most importantly, in the service life of the product<span data-path-to-node=\"24,2\">:<\/span><\/p>\n<ol>\n<li><strong>Superior resistance to Hydrolysis: <\/strong>Withstands continuous thermal shock and humid heat testing without suffering whitening, surface hazing, or micro-cracking, a critical requirement for bathroom and kitchen applications<span data-path-to-node=\"25,0,0,2\">. <\/span>This is particularly evident in dark-colored pieces<span data-path-to-node=\"25,0,0,4\">.<\/span><\/li>\n<li><strong>Enhanced UV Stability &amp; Anti-Yellowing:<\/strong> Formulated with light stabilizers and UV absorbers to prevent white or light-toned items from acquiring a yellowish tint over time or upon exposure to light<span data-path-to-node=\"25,1,0,2\">.<\/span><\/li>\n<li><strong>Increased Barcol Hardness &amp; Scratch Resistance:<\/strong> Adding methyl methacrylate (MMA) increases the Barcol hardness of the cured composite, enhancing abrasion resistance and durability under daily wear and tear<span data-path-to-node=\"25,2,0,2\">.<\/span><\/li>\n<li><strong>Superior Chemical and Stain Resistance:<\/strong> Excellent tolerance to household detergents, commercial cleaners, mild acids, and alkalis, preventing staining or surface gloss degradation<span data-path-to-node=\"25,3,0,2\">.<\/span><\/li>\n<li><strong>Optimal Translucency and Color Clarity:<\/strong> Low initial base color in the polymerized state allows for pure white shades and accurate color reproduction when blended with concentrated pigment dispersions<span data-path-to-node=\"25,4,0,2\">.<\/span><\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff25c0e elementor-widget elementor-widget-heading\" data-id=\"ff25c0e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">AITANACHEM: Reactivity Adjustment for ISO-NPG Resin and On-Site Factory Support<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5931e9d elementor-widget elementor-widget-text-editor\" data-id=\"5931e9d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>At <strong>AITANACHEM<\/strong> we don\u2019t merely supply high-quality ISO-NPG resins; <strong>we tailor the resin to the operational reality of your plant:<\/strong><\/p>\n<ol>\n<li><strong>Gel Time Tailoring:<\/strong> We adjust resin reactivity according to your plant&#8217;s ambient working temperature (seasonal variations winter\/summer) and part volume to eliminate cracking caused by excessive exotherm or soft, uncured parts<span data-path-to-node=\"29,0,0,2\">.<\/span><\/li>\n<li><strong>Exothermic-curve optimisation: <\/strong>we fine-tune catalysis to ensure uniform curing through thick sections while minimizing residual unreacted styrene.<\/li>\n<li><strong>Pilot-plant Testing: <\/strong>we replicate your mixing and casting process at our pilot facilities to optimize raw material usage and formulation costs before scaling up to your main production line<span data-path-to-node=\"29,2,0,2\">.<\/span><\/li>\n<\/ol>\n<p>To ensure a proper demolding process, we recommend combining our raw materials for solid surface production with our <a href=\"https:\/\/aitanachem.com\/en\/release-agents\/release-agents-for-composites\/\" target=\"_blank\" rel=\"noopener\"><strong>release agents for composites.<\/strong><\/a><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25d01e7 elementor-widget elementor-widget-heading\" data-id=\"25d01e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently asked questions (FAQ) about ISO-NPG resin<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9093204 elementor-widget elementor-widget-accordion\" data-id=\"9093204\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1511\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-1511\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What does ISO-NPG stand for?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1511\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-1511\"><p>\u201cISO\u201d refers to isophthalic acid and \u201cNPG\u201d to neopentyl glycol, the two key chemical building blocks that characterize this high-grade unsaturated polyester resin.<\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1512\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-1512\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What is the difference between ISO-NPG resin and orthophthalic (ortho) resin in sanitaryware manufacturing?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1512\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-1512\"><p>Orthophthalic resin is cheaper, but it absorbs more water and is vulnerable to thermal fluctuations<span data-path-to-node=\"36,2\">. ISO-NPG resin (isophthalic with neopentyl glycol) provides <strong>significantly higher resistance to hydrolysis, thermal shock, abrasion, scratching, UV yellowing and chemicals.<\/strong> <strong>It does not degrade when exposed to household cleaning chemicals and prevents white hazing or cracking in wet conditions<\/strong><\/span><span data-path-to-node=\"36,6\"><strong>.<\/strong> Consequently, ISO-NPG is the required choice for high-tier solid surface products<\/span><span data-path-to-node=\"36,8\">.<\/span><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1513\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-1513\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Why does ISO-NPG resin contain Methyl Methacrylate (MMA)?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1513\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-1513\"><p>Adding MMA <strong>reduces the base viscosity of the liquid polyester matrix without compromising mechanical properties<\/strong>, enabling higher mineral filler (ATH) loading rates<span data-path-to-node=\"38,2\">. Furthermore, <strong>MMA improves Barcol hardness, surface scratch resistance, and optical color depth<\/strong><\/span><strong>.<\/strong><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1514\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-1514\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Are additional UV additives required in ISO-NPG resin?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1514\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-1514\"><p><strong>Our standard ISO-NPG resin formulations include light stabilizers to protect parts from aging<\/strong><span data-path-to-node=\"40,2\"><strong>.<\/strong> However, for products subjected to extreme radiation or formulated in dark colors, we can further reinforce the resin with specific free-radical scavengers and light blockers<\/span><span data-path-to-node=\"40,4\">.<\/span><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1515\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-1515\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Does ISO-NPG resin comply with the ISO 19712:2013 standard?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1515\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-1515\"><p>While using an ISO-NPG resin alone does not automatically certify a finished product, its chemical properties are essential for ensuring that the cured solid surface passes the strict testing required by UNE-EN ISO 19712:2013 (resistance to humid heat, thermal shock, chemical stain resistance, color stability, and renewability)<span data-path-to-node=\"42,2\">.<\/span><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<h3 id=\"elementor-tab-title-1516\" class=\"elementor-tab-title\" data-tab=\"6\" role=\"button\" aria-controls=\"elementor-tab-content-1516\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Can ISO-NPG resin be used without gelcoat layer?<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\t<div id=\"elementor-tab-content-1516\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"6\" role=\"region\" aria-labelledby=\"elementor-tab-title-1516\"><p>Yes<span data-path-to-node=\"44,2\">. Because it polymerizes with low intrinsic color and exceptional chemical resistance, <strong>ISO-NPG resin is the ideal matrix for solid, ungelcoated products<\/strong> (pure solid surface) that require full surface repairability via light sanding<\/span><span data-path-to-node=\"44,4\">.<\/span><\/p>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does ISO-NPG stand for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>\\u201cISO\\u201d refers to isophthalic acid and \\u201cNPG\\u201d to neopentyl glycol, the two key chemical building blocks that characterize this high-grade unsaturated polyester resin.<\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between ISO-NPG resin and orthophthalic (ortho) resin in sanitaryware manufacturing?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Orthophthalic resin is cheaper, but it absorbs more water and is vulnerable to thermal fluctuations<span data-path-to-node=\\\"36,2\\\">. ISO-NPG resin (isophthalic with neopentyl glycol) provides <strong>significantly higher resistance to hydrolysis, thermal shock, abrasion, scratching, UV yellowing and chemicals.<\\\/strong> <strong>It does not degrade when exposed to household cleaning chemicals and prevents white hazing or cracking in wet conditions<\\\/strong><\\\/span><span data-path-to-node=\\\"36,6\\\"><strong>.<\\\/strong> Consequently, ISO-NPG is the required choice for high-tier solid surface products<\\\/span><span data-path-to-node=\\\"36,8\\\">.<\\\/span><\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"Why does ISO-NPG resin contain Methyl Methacrylate (MMA)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Adding MMA <strong>reduces the base viscosity of the liquid polyester matrix without compromising mechanical properties<\\\/strong>, enabling higher mineral filler (ATH) loading rates<span data-path-to-node=\\\"38,2\\\">. Furthermore, <strong>MMA improves Barcol hardness, surface scratch resistance, and optical color depth<\\\/strong><\\\/span><strong>.<\\\/strong><\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"Are additional UV additives required in ISO-NPG resin?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p><strong>Our standard ISO-NPG resin formulations include light stabilizers to protect parts from aging<\\\/strong><span data-path-to-node=\\\"40,2\\\"><strong>.<\\\/strong> However, for products subjected to extreme radiation or formulated in dark colors, we can further reinforce the resin with specific free-radical scavengers and light blockers<\\\/span><span data-path-to-node=\\\"40,4\\\">.<\\\/span><\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"Does ISO-NPG resin comply with the ISO 19712:2013 standard?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>While using an ISO-NPG resin alone does not automatically certify a finished product, its chemical properties are essential for ensuring that the cured solid surface passes the strict testing required by UNE-EN ISO 19712:2013 (resistance to humid heat, thermal shock, chemical stain resistance, color stability, and renewability)<span data-path-to-node=\\\"42,2\\\">.<\\\/span><\\\/p>\\n\"}},{\"@type\":\"Question\",\"name\":\"Can ISO-NPG resin be used without gelcoat layer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Yes<span data-path-to-node=\\\"44,2\\\">. Because it polymerizes with low intrinsic color and exceptional chemical resistance, <strong>ISO-NPG resin is the ideal matrix for solid, ungelcoated products<\\\/strong> (pure solid surface) that require full surface repairability via light sanding<\\\/span><span data-path-to-node=\\\"44,4\\\">.<\\\/span><\\\/p>\\n\"}}]}<\/script>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ecf21fb elementor-widget elementor-widget-heading\" data-id=\"ecf21fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Looking for the ideal ISO-NPG resin for your project?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d92776c elementor-widget elementor-widget-text-editor\" data-id=\"d92776c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>If you want to <strong>improve the thermal-shock resistance of your molded products, shorten demoulding cycle times<\/strong>, or receive expert guidance on selecting the optimal resin formulation for your plant, our technical engineering team is is here to support you<span data-path-to-node=\"47,2\">. <a href=\"https:\/\/aitanachem.com\/en\/contact\/\" target=\"_blank\" rel=\"noopener\"><strong><u>Get in touch with us<\/u><\/strong><\/a> and we will recommend the ISO-NPG resin that best suits your product portfolio.<\/span><\/p>\n<p>Would you like to review the complete manufacturing process or explore other raw materials for solid surface casting<span data-path-to-node=\"48,2\">? Visit our overview page on <a href=\"https:\/\/aitanachem.com\/en\/solid-surface\/\"><strong><u>solid surface<\/u><\/strong><\/a> raw materials and technical support<\/span><span data-path-to-node=\"48,4\">. 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85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-share-btn__text\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__title\">\n\t\t\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Twitter Share Pin WhatsApp Email ISO-NPG resin (isophthalic \u2013 neopentyl glycol) is an unsaturated polyester resin specially recommended for the manufacturing of solid surface products. Formulated from isophthalic acid and neopentyl glycol, it delivers higher reactivity and high rigidity once cured, exhibiting outstanding performance against the rigorous mechanical and chemical demands of solid surfaces. At [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":822,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"plain-container","ast-site-content-layout":"normal-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-824","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ISO-NPG (isophthalic) resin for solid surface | AITANACHEM<\/title>\n<meta name=\"description\" content=\"ISO-NPG isophthalic resin for solid surface: higher resistance to hydrolysis, scratching and UV yellowing. 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