{"id":1113,"date":"2026-07-13T02:44:03","date_gmt":"2026-07-13T02:44:03","guid":{"rendered":"https:\/\/lypaperchem.com\/?p=1113"},"modified":"2026-07-16T03:32:52","modified_gmt":"2026-07-16T03:32:52","slug":"akd-sizing-agents-manufacturing-innovations-application-strategies-and-food-safety-compliance","status":"publish","type":"post","link":"https:\/\/lypaperchem.com\/vi\/akd-sizing-agents-manufacturing-innovations-application-strategies-and-food-safety-compliance\/","title":{"rendered":"Ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 \u0111\u1eb7c AKD: Nh\u1eefng \u0111\u1ed9t ph\u00e1 trong s\u1ea3n xu\u1ea5t, chi\u1ebfn l\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh v\u1ec1 an to\u00e0n th\u1ef1c ph\u1ea9m"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 \u0111\u1eb7c AKD: Nh\u1eefng \u0111\u1ed9t ph\u00e1 trong s\u1ea3n xu\u1ea5t, chi\u1ebfn l\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh v\u1ec1 an to\u00e0n th\u1ef1c ph\u1ea9m<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. Introduction: The Evolution of AKD Manufacturing Technology<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Alkyl Ketene Dimer (AKD) has established itself as the most widely used neutral sizing agent in modern papermaking, offering superior water resistance, enhanced paper strength, and compatibility with cost-effective calcium carbonate fillers. Since its first industrial development by Hercules Inc. in 1956, AKD technology has undergone continuous refinement\u2014from traditional solvent-based synthesis to today\u2019s green, solvent-free manufacturing processes, and from liquid emulsions to advanced redispersible powder formulations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This article provides a comprehensive technical overview of AKD sizing agents, covering manufacturing innovations, application strategies, and the critical safety and regulatory considerations that govern their use in food-contact paper products. As global demand for sustainable, high-performance packaging materials continues to rise, understanding the full lifecycle of AKD\u2014from synthesis to end-use application\u2014has never been more important for papermakers and chemical buyers alike.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 LY Chem.<\/strong> , with over two decades of experience in paper chemicals manufacturing, offers a complete range of AKD-based sizing solutions, including our LY-AKD301 internal sizing agent and LY-AKD302 surface sizing agent. Our products are manufactured under ISO 9001 quality management and are available with FDA, SGS, and RoHS certifications for export markets.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Manufacturing Innovations: From Solvent-Based to Green Synthesis<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 Traditional Solvent-Based AKD Synthesis<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Historically, AKD has been produced through the reaction of triethylamine and fatty acyl chlorides in organic solvents\u2014most commonly toluene. While this method yields AKD of acceptable quality, it presents significant drawbacks:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Solvent residue<\/strong>: Toluene, classified as a carcinogenic substance by the World Health Organization, can remain as a residue in the final AKD product.<\/li>\n\n\n\n<li><strong>Environmental pollution<\/strong>: The use of volatile organic solvents generates emissions and wastewater that require costly treatment.<\/li>\n\n\n\n<li><strong>Application limitations<\/strong>: Solvent residues render traditionally manufactured AKD unsuitable for food-contact paper applications, severely limiting its market potential.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 The Solvent-Free Revolution<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In response to these challenges, researchers and manufacturers have developed <strong>solvent-free AKD synthesis processes<\/strong> that eliminate toluene and other organic solvents from production.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key innovations in solvent-free AKD manufacturing include:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Higher reaction temperatures<\/strong>: The synthesis temperature has been raised from the traditional 25\u00b0C to 50\u201370\u00b0C, accelerating reaction rates and significantly improving product quality.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Reduced moisture content<\/strong>: The elimination of solvents reduces the moisture content of reactants, leading to higher-purity AKD.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Energy efficiency<\/strong>: The solvent-free process effectively reduces energy consumption while achieving near-zero wastewater discharge.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Superior product purity<\/strong>: Solvent-free AKD is typically free from toxic substances, making it particularly suitable for sensitive applications such as liquid food packaging paper where hygiene standards are paramount.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Leading manufacturers have patented continuous AKD preparation devices that enable high-purity, solvent-free production at industrial scale. These innovations have made solvent-free AKD the mainstream direction for the industry.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 Redispersible Powder Sizing Agents: Enhancing Stability and Performance<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">While AKD emulsions have been the industry standard for decades, they face inherent challenges: short shelf life (typically 1\u20133 months), susceptibility to hydrolysis, and the need for careful temperature-controlled storage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To overcome these limitations, researchers have developed <strong>redispersible powder sizing agents<\/strong> using starch and polyvinyl alcohol (PVA) as protective colloids. These powder formulations are typically prepared through <strong>spray drying<\/strong>\u2014a process in which AKD emulsions containing protective colloids are atomized and dried to form free-flowing powders.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The advantages of redispersible powder AKD are substantial:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Extended shelf life<\/strong>: Powder formulations are significantly more stable than liquid emulsions<\/li>\n\n\n\n<li><strong>Improved storage stability<\/strong>: Reduced hydrolysis during storage<\/li>\n\n\n\n<li><strong>Excellent redispersibility<\/strong>: The powder readily redisperses in water to form stable emulsions<\/li>\n\n\n\n<li><strong>Superior sizing efficiency<\/strong>: Enhanced performance compared to conventional emulsions<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This technology represents a significant advancement in AKD formulation, enabling papermakers to maintain consistent sizing performance while simplifying inventory management and reducing waste.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Application Strategies: Internal vs. Surface Sizing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AKD sizing agents can be applied through two distinct approaches\u2014internal sizing and surface sizing\u2014each offering unique benefits and optimal use cases.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 Internal Sizing (Wet-End Sizing)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Internal sizing involves the addition of AKD emulsion directly to the pulp at the wet end of the paper machine. The AKD particles adsorb onto cellulose fibers through electrostatic interactions and, during the drying process, form covalent ester bonds with fiber hydroxyl groups\u2014creating a permanent hydrophobic barrier.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Advantages of internal AKD sizing:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Simple application<\/strong>: Added directly to the pulp system with minimal process modification<\/li>\n\n\n\n<li><strong>Lower cost<\/strong>: No additional equipment required beyond standard wet-end chemical addition systems<\/li>\n\n\n\n<li><strong>Uniform distribution<\/strong>: Sizing agent is distributed throughout the sheet, providing bulk water resistance<\/li>\n\n\n\n<li><strong>Enhanced internal bond strength<\/strong>: Improves overall sheet integrity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Limitations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Curing time required<\/strong>: Traditional formulations require 12\u201324 hours for full sizing development<\/li>\n\n\n\n<li><strong>Surface roughness<\/strong>: Internally sized papers may have higher surface roughness<\/li>\n\n\n\n<li><strong>Potential for surface defects<\/strong>: Issues such as waxy spots can occur if sizing is not properly controlled<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 Surface Sizing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Surface sizing involves the application of AKD or other sizing agents to the surface of already-formed paper at the size press, after the sheet has been partially dried.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Advantages of surface AKD sizing:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High retention<\/strong>: Sizing agent retention approaches 100%, minimizing waste<\/li>\n\n\n\n<li><strong>Superior surface properties<\/strong>: Significantly improves surface strength, water resistance, smoothness, and printability<\/li>\n\n\n\n<li><strong>Reduced two-sidedness<\/strong>: Minimizes the difference between top and bottom sheet surfaces<\/li>\n\n\n\n<li><strong>Enhanced physical strength<\/strong>: Improves ring crush index and burst index<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Limitations:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Higher cost<\/strong>: Requires additional equipment (size press) and sizing materials<\/li>\n\n\n\n<li><strong>Additional process step<\/strong>: Adds complexity to the papermaking process<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3.3 Strategic Selection: Which Approach Is Right for Your Application?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The choice between internal and surface sizing\u2014or a combination of both\u2014depends on the specific requirements of the final paper product:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Application<\/th><th>Recommended Approach<\/th><th>Rationale<\/th><\/tr><\/thead><tbody><tr><td><strong>T\u1ea5m b\u00eca \u0111\u00f3ng g\u00f3i ch\u1ea5t l\u1ecfng<\/strong><\/td><td>Internal sizing (hard sizing)<\/td><td>AKD provides excellent resistance to fruit juice, lactic acid, and other aggressive media<\/td><\/tr><tr><td><strong>Corrugated medium (fluting)<\/strong><\/td><td>X\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc b\u00ean trong<\/td><td>Provides compression resistance and moisture resistance for box strength<\/td><\/tr><tr><td><strong>Linerboard for high-precision printing<\/strong><\/td><td>X\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc b\u1ec1 m\u1eb7t<\/td><td>Enhances printability and surface smoothness<\/td><\/tr><tr><td><strong>Food packaging paper<\/strong><\/td><td>Internal + surface sizing<\/td><td>Dual approach ensures maximum barrier performance and regulatory compliance<\/td><\/tr><tr><td><strong>Fast-moving consumer goods packaging<\/strong><\/td><td>X\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc b\u00ean trong<\/td><td>Cost-effective for short-transport, lightweight applications<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LY Chem\u2019s AKD solutions<\/strong> address both application approaches:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LY-AKD301 (Ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc AKD n\u1ed9i b\u1ed9)<\/strong> \u2014 Ideal for wet-end addition, delivering superior water resistance and aging resistance for cultural paper, coated paper, and packaging base paper<\/li>\n\n\n\n<li><strong>LY-AKD302 (Ch\u1ea5t t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh b\u1ec1 m\u1eb7t AKD)<\/strong> \u2014 Designed for size-press application in combination with starch, shortening curing time while improving ring crush strength and burst strength for corrugating medium and linerboard<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4. Food Safety and Regulatory Compliance<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 The Food-Contact Challenge<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">AKD is widely used in the manufacture of paper and board for food-contact applications to increase wetting stability. However, unbound AKD residues can hydrolyze and decarboxylate into dialkylketones\u2014non-intentionally added substances (NIAS) that have the potential to migrate into fatty foods in contact with these packaging materials.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This migration potential has made food-contact compliance a critical consideration for AKD manufacturers and papermakers serving the food packaging sector.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 FDA Regulations (United States)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The U.S. Food and Drug Administration (FDA) addresses AKD under <strong>21 CFR 176.120<\/strong> (\u201calkyl ketene dimers\u201d). Key provisions include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>AKD and its hydrolysis products (dialkyl ketones) may be used in paper and paperboard<\/li>\n\n\n\n<li>The combined total of AKD and dialkyl ketones must <strong>not exceed 0.4% by weight<\/strong> of the paper and paperboard<\/li>\n\n\n\n<li>The petition dossier for this approval covers comprehensive studies of potential exposure through the packaging chain, including complete toxicity studies for the hydrolysis product<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.3 BfR Regulations (Germany)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In Germany, the Federal Institute for Risk Assessment (BfR) has established specific regulations for paper and board intended for food contact under <strong>Recommendation XXXVI<\/strong> (\u201cPapiere, Kartons und Pappen f\u00fcr den Lebensmittelkontakt\u201d):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Part B, additives, paragraph I.11<\/strong>: Dialkyl (C10-C18) diketene (may contain up to 65% iso-alkyl groups) \u2014 <strong>maximum 1.0%<\/strong><\/li>\n\n\n\n<li><strong>Recommendation XXXVI\/2<\/strong> (\u201cPapiere, Kartons und Pappen f\u00fcr Backzwecke\u201d \u2014 papers for baking purposes) \u2014 <strong>maximum 0.5%<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Additionally, the BfR has established a <strong>specific migration limit (SML) of 5 mg\/kg<\/strong> for the transfer of dialkylketones into foodstuffs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.4 European and Other International Standards<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The European Union regulates food-contact materials under <strong>Regulation (EC) No 1935\/2004<\/strong>. Other national approvals for AKD in food-contact applications include the Dutch <strong>Warenwet<\/strong> regulations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.5 Implications for Papermakers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For paper manufacturers serving the food packaging sector, the regulatory landscape demands:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Careful selection of AKD suppliers<\/strong>: Choose manufacturers that can demonstrate compliance with relevant food-contact regulations<\/li>\n\n\n\n<li><strong>Control of AKD addition levels<\/strong>: Ensure that AKD and dialkylketone content remains below regulatory limits<\/li>\n\n\n\n<li><strong>Migration testing<\/strong>: Verify that dialkylketone migration into food simulants and actual foods remains below SMLs<\/li>\n\n\n\n<li><strong>Documentation<\/strong>: Maintain comprehensive records of raw material specifications and finished product compliance<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 LY Chem.<\/strong> addresses these requirements through our <strong>LY-WA403 food-grade PAE wet strength resin<\/strong> and our full range of AKD sizing products, all available with <strong>FDA, SGS, and RoHS certifications<\/strong>. Our solvent-free manufacturing processes ensure that our AKD products are free from toluene and other harmful solvent residues, making them suitable for the most demanding food-contact applications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5. Tri\u1ec3n v\u1ecdng th\u1ecb tr\u01b0\u1eddng v\u00e0 xu h\u01b0\u1edbng ng\u00e0nh<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">5.1 Global AKD Market Growth<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The global Alkyl Ketene Dimer (AKD) market demonstrates robust growth, driven by increasing demand from the paper manufacturing sector\u2014particularly for packaging applications:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Market valued at <strong>USD 460 million in 2024<\/strong><\/li>\n\n\n\n<li>Projected to reach <strong>USD 485 million in 2025<\/strong><\/li>\n\n\n\n<li>Expected to grow to <strong>USD 720 million by 2032<\/strong><\/li>\n\n\n\n<li><strong>CAGR of 5.8%<\/strong> trong giai \u0111o\u1ea1n d\u1ef1 b\u00e1o<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i <strong>Khu v\u1ef1c ch\u00e2u \u00c1-Th\u00e1i B\u00ecnh D\u01b0\u01a1ng<\/strong> currently dominates AKD consumption, accounting for <strong>over 45% of global demand<\/strong>, with China being the largest producer and consumer. The China market alone accounted for nearly 35% of global paper production capacity in 2024, with AKD consumption in this sector growing 6.8% year-over-year.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5.2 Key Market Drivers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sustainable Packaging Growth<\/strong>: With the paper and paperboard packaging sector expected to grow at over 4% annually through 2032, demand for AKD as a sizing agent continues to rise. This growth aligns with increased e-commerce activities and environmental regulations phasing out single-use plastics.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Technological Advancements<\/strong>: Recent innovations in AKD wax emulsion formulations have enhanced sizing performance while reducing consumption rates by <strong>up to 15%<\/strong> compared to traditional products. Major producers have developed thermally stable variants that maintain effectiveness across broader pH ranges (6.5\u20138.5), enabling wider application in recycled paper streams.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cost-Effectiveness<\/strong>: AKD-based solutions have proven <strong>20\u201325% more cost-effective<\/strong> than rosin alternatives in neutral\/alkaline papermaking conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bio-Based AKD Development<\/strong>: While currently accounting for less than 10% of total production, renewable-sourced AKD is projected to capture nearly <strong>30% market share by 2032<\/strong> as sustainability mandates tighten globally.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Conclusion: The Future of AKD Sizing Technology<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">AKD neutral sizing technology has evolved dramatically since its introduction in 1956. From traditional solvent-based synthesis to today\u2019s green, solvent-free manufacturing processes, and from liquid emulsions to advanced redispersible powder formulations, AKD technology continues to advance in response to the paper industry\u2019s evolving needs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key trends shaping the future of AKD sizing include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sustainability<\/strong>: Solvent-free manufacturing and bio-based AKD precursors reducing environmental impact<\/li>\n\n\n\n<li><strong>Performance enhancement<\/strong>: Improved formulations offering faster curing, better stability, and reduced consumption rates<\/li>\n\n\n\n<li><strong>Regulatory compliance<\/strong>: Increasing focus on food-contact safety and migration limits<\/li>\n\n\n\n<li><strong>Application expansion<\/strong>: Growing use in recycled paper streams and specialty applications<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng ty TNHH C\u00f4ng ngh\u1ec7 LY Chem.<\/strong> stands at the forefront of these developments. With over two decades of experience in paper chemicals manufacturing, we offer a comprehensive range of AKD-based sizing solutions designed to meet the diverse needs of modern papermakers:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LY-AKD301 (Ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc AKD n\u1ed9i b\u1ed9)<\/strong> \u2014 Superior water resistance and aging resistance for cultural paper, coated paper, and packaging base paper<\/li>\n\n\n\n<li><strong>LY-AKD302 (Ch\u1ea5t t\u1ea1o \u0111\u1ed9 b\u00e1m d\u00ednh b\u1ec1 m\u1eb7t AKD)<\/strong> \u2014 Enhanced ring crush strength and burst strength for corrugating medium and linerboard<\/li>\n\n\n\n<li><strong>Quy tr\u00ecnh s\u1ea3n xu\u1ea5t kh\u00f4ng s\u1eed d\u1ee5ng dung m\u00f4i<\/strong> \u2014 Ensuring our products are free from toluene and other harmful residues<\/li>\n\n\n\n<li><strong>Food-grade compliance<\/strong> \u2014 Available with FDA, SGS, and RoHS certifications for food-contact applications<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">As the global paper industry continues its transition toward sustainable, high-performance, alkaline papermaking, LY Chem remains committed to providing innovative chemical solutions that empower papermakers to meet the challenges of tomorrow\u2014today.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><em>For more information about LY Chem\u2019s AKD sizing solutions and our complete range of papermaking chemicals, please contact our technical sales team.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Baidu Baike \u2013 Sizing Agent (\u65bd\u80f6\u5242)<\/li>\n\n\n\n<li>Baidu Baike \u2013 Paper Sizing Agent (\u9020\u7eb8\u65bd\u80f6\u5242)<\/li>\n\n\n\n<li>Tech110 \u2013 Alkyl Ketene Dimer (AKD) \u2013 Solvent-Free Production<\/li>\n\n\n\n<li>CNKI \u2013 Solvent-Free Synthesis of AKD \u2013 Research and Exploration<\/li>\n\n\n\n<li>FDA 21 CFR 176.120 \u2013 Alkyl Ketene Dimers<\/li>\n\n\n\n<li>BfR Recommendation XXXVI \u2013 Papers, Boards and Cardboards for Food Contact<\/li>\n\n\n\n<li>Stanford University \u2013 Dialkyl Diketene Dimers in Food Contact Materials<\/li>\n\n\n\n<li>24Chemical Research \u2013 Alkyl Ketene Dimer (AKD) Market Insights 2025<\/li>\n\n\n\n<li>Patsnap \u2013 Device and Method for Continuously Preparing High-Purity AKD Without Solvent<\/li>\n\n\n\n<li>OECD SIDS \u2013 Alkyl Ketene Dimers<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>AKD Sizing Agents: Manufacturing Innovations, Application Strategies, and Food Safety Compliance 1. Introduction: The Evolution &#8230; <a title=\"Ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 \u0111\u1eb7c AKD: Nh\u1eefng \u0111\u1ed9t ph\u00e1 trong s\u1ea3n xu\u1ea5t, chi\u1ebfn l\u01b0\u1ee3c \u1ee9ng d\u1ee5ng v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh v\u1ec1 an to\u00e0n th\u1ef1c ph\u1ea9m\" class=\"read-more\" href=\"https:\/\/lypaperchem.com\/vi\/akd-sizing-agents-manufacturing-innovations-application-strategies-and-food-safety-compliance\/\" aria-label=\"\u0110\u1ecdc th\u00eam v\u1ec1 AKD Sizing Agents: Manufacturing Innovations, Application Strategies, and Food Safety Compliance\">\u0110\u1ecdc th\u00eam<\/a><\/p>","protected":false},"author":1,"featured_media":1202,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-1113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-deep-dives","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"_links":{"self":[{"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/posts\/1113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/comments?post=1113"}],"version-history":[{"count":1,"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/posts\/1113\/revisions"}],"predecessor-version":[{"id":1114,"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/posts\/1113\/revisions\/1114"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/media\/1202"}],"wp:attachment":[{"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/media?parent=1113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/categories?post=1113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lypaperchem.com\/vi\/wp-json\/wp\/v2\/tags?post=1113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}