{"id":766,"date":"2018-02-08T15:53:03","date_gmt":"2018-02-08T12:53:03","guid":{"rendered":"https:\/\/materialwizard.com.ua\/?p=766"},"modified":"2026-06-07T09:17:20","modified_gmt":"2026-06-07T06:17:20","slug":"pet-modifier-joncryl-adr","status":"publish","type":"post","link":"https:\/\/materialwizard.com.ua\/en\/pet-modifier-joncryl-adr\/","title":{"rendered":"Impact Modifier and Chain Extender for PET \u2014 GMA-Grafted \/ Joncryl ADR"},"content":{"rendered":"<p><\/p>\n<h3>Description<\/h3>\n<p><strong>Impact modifier and reactive chain extender for PET<\/strong> from <strong>Material Wizard<\/strong> \u2014 a line of epoxy-functionalized (GMA-grafted) and multifunctional epoxy chain-extender additives for toughening PET and rPET. The epoxy group reacts with the terminal -COOH and -OH groups of the PET chain at 240\u2013280 \u00b0C, forming covalent links and establishing a 200\u2013500 nm dispersed rubber phase for craze-shear dissipation of impact energy.<\/p>\n<h3>Brand mapping of global equivalents<\/h3>\n<ul>\n<li><strong>DuPont\/Dow Elvaloy\u00ae PTW<\/strong> \u2014 E\/n-BA\/GMA terpolymer, the flagship for super-tough PET and airbag clips (<a href=\"\/elvaloy-ptw\/\">see product card #1610 Elvaloy PTW<\/a>)<\/li>\n<li><strong>Arkema Lotader\u00ae AX8840 \/ AX8900 \/ AX8930<\/strong> \u2014 GMA-containing terpolymers with varying % GMA and MAH<\/li>\n<li><strong>Mitsubishi Chemical Modiper\u00ae A4400 \/ A8200<\/strong> \u2014 Asian alternative for PET and nylon toughening<\/li>\n<li><strong>BASF Joncryl\u00ae ADR-4368 \/ ADR-4400 \/ ADR-4385<\/strong> \u2014 multifunctional epoxy chain extender (oligomeric styrene-acrylate), specifically for rPET IV recovery<\/li>\n<li><strong>SK Functional Polymer Bondyram\u00ae 7103 \/ 7115<\/strong> \u2014 GMA-grafted for cost-sensitive applications<\/li>\n<\/ul>\n<h3>Two classes of modifiers \u2014 for different tasks<\/h3>\n<p><strong>1. Impact modifiers (Elvaloy PTW, Lotader AX8840):<\/strong> 10\u201320 % loading, a 3\u201310\u00d7 increase in impact strength; the goal is super-tough PET for structural parts.<\/p>\n<p><strong>2. Chain extenders (Joncryl ADR-4368\/4400):<\/strong> 0.3\u20130.8 % loading, recovery of the intrinsic viscosity (IV) of recycled rPET (IV recovery from 0.68 to 0.78 dl\/g) without a significant change in impact. The goal is upgrading degraded rPET to bottle-grade or fiber-grade requirements.<\/p>\n<h3>Reaction mechanism with PET<\/h3>\n<p>The epoxy group (-CH(O)CH\u2082-) is opened by the action of the PET end groups:<\/p>\n<ul>\n<li><strong>-COOH (carboxyl):<\/strong> forms a covalent -O-C(=O)- ester bond<\/li>\n<li><strong>-OH (hydroxyl):<\/strong> forms an -O-CH\u2082-CH(OH)- ether linkage<\/li>\n<li><strong>Effect:<\/strong> increased molecular weight (chain extension), recovery of melt viscosity, and for impact grades \u2014 anchoring of the rubber phase at the interface with the PET matrix<\/li>\n<\/ul>\n<h3>Typical additive effects<\/h3>\n<ul>\n<li><strong>Impact grade (15 % Elvaloy PTW \/ Lotader AX8840):<\/strong> Charpy notched @ 23 \u00b0C 3\u20135 \u2192 25\u201355 kJ\/m\u00b2; super-tough PET classification<\/li>\n<li><strong>Chain extender (0.5 % Joncryl ADR):<\/strong> IV recovery 0.68 \u2192 0.78 dl\/g; a 2\u20133\u00d7 MFI reduction; melt strength +200 % for extrusion \/ blow molding<\/li>\n<li><strong>rPET bottle-to-bottle:<\/strong> 0.3\u20130.5 % chain extender allows rPET (100 % PCR) to be used for blow molding over 5+ cycles without quality loss<\/li>\n<li><strong>rPET fiber grade:<\/strong> 0.5\u20130.8 % chain extender restores the IV drift to fiber-spinning requirements (IV &gt;0.72)<\/li>\n<\/ul>\n<h3>Killer markets<\/h3>\n<p><strong>1. Bottle-to-bottle rPET recycling (#1 driver 2024-2026):<\/strong> EU target of 30 % rPET content in beverage bottles by 2030 (Directive EU 2019\/904 SUP); USA RPM targets in PA, CA. The chain extender is the critical additive for returning recycled PET to bottle grade.<\/p>\n<p><strong>2. Super-tough PET for technical parts:<\/strong> airbag clip-on connectors, automotive interior brackets (where low moisture absorption vs PA matters), high-strength bottle caps.<\/p>\n<p><strong>3. PET fiber recycling:<\/strong> textile-to-textile rPET (fabric polyester \u2192 yarn for fabric) \u2014 the chain extender restores IV for repeated fiber spinning, a key technology for H&amp;M, Inditex and Nike ESG programs.<\/p>\n<p><strong>4. PET-blend compatibilization:<\/strong> PET\/PE blends in multilayer packaging recycling \u2014 the GMA modifier compatibilizes the immiscible phases and provides usable mechanical properties in the recyclate.<\/p>\n<h3>Target applications<\/h3>\n<p><strong>Packaging industry:<\/strong> PET beverage bottles with rPET content, containers for food (hot filling requires super-tough PET), cosmetics and household chemicals.<\/p>\n<p><strong>Textile industry:<\/strong> recycled polyester for clothing, technical fabrics, nonwovens (geotextiles), carpeting.<\/p>\n<p><strong>Automotive:<\/strong> super-tough PET (with 15 % impact modifier) for interior brackets, airbag module retainers, housings of small electrical devices.<\/p>\n<p><strong>Industrial tapes and films:<\/strong> PET film for packaging (12\u2013250 \u00b5m thickness), magnetic tapes (legacy), battery separators (with a special grade).<\/p>\n<h3>Limitations \u2014 honestly<\/h3>\n<ul>\n<li><strong>Reaction temperature 240\u2013280 \u00b0C:<\/strong> below this range the epoxy does not react with PET; above it, it may dimerize or crosslink (gels)<\/li>\n<li><strong>Not for PE\/PP blends:<\/strong> the epoxy does not react with polyolefin end groups; PE\/PP\/PA blends require MAH-grafted modifiers (#770 for PA, #768 for PP)<\/li>\n<li>The chain extender (Joncryl) at loadings &gt;1 % can cause gel formation in bottle preforms \u2014 calibrate precisely<\/li>\n<li>The impact modifier (Elvaloy PTW) reduces PET bottle transparency \u2014 for clear-bottle applications the maximum loading is 5\u20138 %<\/li>\n<li>Not for food contact in unverified formulations \u2014 each grade requires separate FDA \/ EU 10\/2011 \/ NSF migration verification<\/li>\n<li>Cost 3\u20138 times higher than base PET \u2014 justified for recyclate IV recovery (where the alternative is a ~30 % virgin PET premium) and for super-tough applications<\/li>\n<\/ul>\n<h3>Test methods<\/h3>\n<p>ISO 1628-5 (intrinsic viscosity), ISO 1133 (MFI), ISO 179-1eA (Charpy notched), ASTM D5630 (impact strength), GPC for molecular weight after chain extension, capillary rheometer for melt strength.<\/p>\n<p><em>The stated values are measured using in-house methods close to the corresponding ISO and GOST standards. The information is provided for reference only and does not constitute an official technical data sheet for a batch. Please request the TDS and MSDS for the specific batch and grade before industrial use.<\/em><\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Description Impact modifier and reactive chain extender for PET from Material Wizard \u2014 a line of epoxy-functionalized (GMA-grafted) and multifunctional epoxy chain-extender additives for toughening PET and rPET. The epoxy group reacts with the terminal -COOH and -OH groups of the PET chain at 240\u2013280 \u00b0C, forming covalent links and establishing a 200\u2013500 nm dispersed [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":636,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-impact-modifiers"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PET Modifiers \u2014 Elvaloy PTW, Lotader AX, Joncryl ADR | MW<\/title>\n<meta name=\"description\" content=\"Impact modifier and chain extender for PET\/rPET. Analog of Elvaloy PTW, Lotader AX8840, Joncryl ADR. 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Bottle-to-bottle, super-tough PET, fiber recycling.\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/pet-modifier-joncryl-adr\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/pet-modifier-joncryl-adr\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/#\\\/schema\\\/person\\\/dca276cf78b76cd5e4d5c6e6eb529fad\"},\"headline\":\"Impact Modifier and Chain Extender for PET \u2014 GMA-Grafted \\\/ Joncryl ADR\",\"datePublished\":\"2018-02-08T12:53:03+00:00\",\"dateModified\":\"2026-06-07T06:17:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/pet-modifier-joncryl-adr\\\/\"},\"wordCount\":1982,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/pet-modifier-joncryl-adr\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/materialwizard.com.ua\\\/wp-content\\\/uploads\\\/2017\\\/12\\\/Modifikatory-udarnoj-prochnosti.jpg\",\"articleSection\":[\"Impact modifiers\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/materialwizard.com.ua\\\/pet-modifier-joncryl-adr\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/en\\\/pet-modifier-joncryl-adr\\\/\",\"url\":\"https:\\\/\\\/materialwizard.com.ua\\\/en\\\/pet-modifier-joncryl-adr\\\/\",\"name\":\"PET Modifiers \u2014 Elvaloy PTW, Lotader AX, Joncryl ADR | MW\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/en\\\/pet-modifier-joncryl-adr\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/materialwizard.com.ua\\\/pet-modifier-joncryl-adr\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/materialwizard.com.ua\\\/wp-content\\\/uploads\\\/2017\\\/12\\\/Modifikatory-udarnoj-prochnosti.jpg\",\"datePublished\":\"2018-02-08T12:53:03+00:00\",\"dateModified\":\"2026-06-07T06:17:20+00:00\",\"description\":\"Impact modifier and chain extender for PET\\\/rPET. 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