{"id":3069,"date":"2015-09-18T08:00:26","date_gmt":"2015-09-18T14:00:26","guid":{"rendered":"https:\/\/www.ulprospector.com\/knowledge\/?p=3069"},"modified":"2018-07-11T13:06:07","modified_gmt":"2018-07-11T19:06:07","slug":"pc-fundamentals-waterborne-resin-technology","status":"publish","type":"post","link":"https:\/\/ulprospector.ul.com\/3069\/pc-fundamentals-waterborne-resin-technology\/","title":{"rendered":"Fundamentals of Waterborne Resin Technology"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignright\" src=\"https:\/\/ulprospector.ul.com\/media\/2015\/09\/WaterborneResins02.jpg\" alt=\"WaterborneResins02\" \/><a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=Waterborne&amp;sug=1&amp;st=31\" target=\"_blank\" rel=\"noopener\">Waterborne coatings<\/a>\u00a0are the largest type of coating technology used on a global basis and are expected to continue to grow as a percent of the total coatings market. By 2022, the\u00a0<a href=\"http:\/\/globenewswire.com\/news-release\/2015\/08\/07\/758934\/10145233\/en\/Waterborne\" target=\"_blank\" rel=\"noopener\">global market size<\/a>\u00a0of waterborne coatings is expected to be over $146 billion USD. Growth in large part is due to increased volume in the construction and automotive markets with\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=Acrylics&amp;sug=1&amp;st=31\" target=\"_blank\" rel=\"noopener\">acrylics<\/a>\u00a0being the largest single type of waterborne resin system representing over 80% of the total waterborne market.<\/p>\n<p><strong><em>Driving forces<\/em><\/strong>\u00a0for the increased use of waterborne coatings include:<\/p>\n<ul>\n<li>Lower VOC<\/li>\n<li>Ease of cleanup in most cases<\/li>\n<li>Decreased fire hazard<\/li>\n<li>Lower insurance cost<\/li>\n<li>Lower energy use for <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=bake+coatings&amp;st=31\" target=\"_blank\" rel=\"noopener\">baked coatings<\/a> due to the need for less oven make up air<\/li>\n<li>The need for decreased levels of <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=petroleum&amp;st=31\" target=\"_blank\" rel=\"noopener\">petroleum<\/a>-based materials.<\/li>\n<\/ul>\n<p>As the May, 2014 Prospector article on <a href=\"https:\/\/ulprospector.ul.com\/639\/flow-leveling-viscosity-control-water-born-coatings\/\" target=\"_blank\" rel=\"noopener\">Flow, Leveling and Viscosity Control in Water-Based Coatings<\/a> indicates, the two largest classes of waterborne coatings include <strong><em><a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=water-reducible&amp;st=31\" target=\"_blank\" rel=\"noopener\">water-reducible<\/a><\/em><\/strong> and <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=latex&amp;st=31\" target=\"_blank\" rel=\"noopener\"><strong><em>latex<\/em><\/strong><\/a>, with the majority of baked coatings falling in the first category with most of the architectural coatings belonging to the second category. The term <strong><em>water-reducible<\/em><\/strong> is used for resins made in solvent and reduced in water to form a dispersion of resin in water. <strong><em>Latex <\/em><\/strong>resins on the other hand are prepared by emulsion polymerization in water.<\/p>\n<p><em>Disadvantages<\/em> for the use of waterborne coatings include:<\/p>\n<ul>\n<li>High dependence of evaporation rate on relative humidity<\/li>\n<li>High heat of evaporation for water requires 2260 J\/g for water and for example only 373 J\/g for <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=2-butoxyethanol&amp;st=31\" target=\"_blank\" rel=\"noopener\">2-butoxyethanol<\/a>, a commonly used <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=cosolvent&amp;st=31\" target=\"_blank\" rel=\"noopener\">cosolvent<\/a><\/li>\n<li>Nonlinear viscosity reduction curve for coatings using water reducible resins<\/li>\n<li>High dependence of flow and appearance on relative humidity<\/li>\n<li>High surface tension of water (poorer wetting) requires the addition of <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=surfactant&amp;st=31\" target=\"_blank\" rel=\"noopener\">surfactants<\/a> which in many cases detracts from humidity resistance<\/li>\n<li>Waterborne coatings are more corrosive than solvent born coatings and thus require lined containers, plastic or stainless steel to avoid rust<\/li>\n<li>Waterborne coatings are more prone to popping in baked applications as film formation begins to occur before water evaporates from the film (see Table I)<\/li>\n<\/ul>\n<p>However the continued advancement in material science to include innovations in <em>resin chemistry, surfactants, <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=wetting+agents&amp;st=31\" target=\"_blank\" rel=\"noopener\">wetting agents<\/a> and <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=flow+agents&amp;st=31\" target=\"_blank\" rel=\"noopener\">flow agents<\/a><\/em> will help enable the continued growth of waterborne coatings.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/ulprospector.ul.com\/media\/2015\/09\/Screen-Shot-2015-09-16-at-3.01.23-PM.png\" alt=\"Screen Shot 2015-09-16 at 3.01.23 PM\" \/><\/p>\n<p>Figure I represents the various stages in drying of a latex based paint system. The first stage involves the evaporation of water. The second stage includes the continued evaporation of water and cosolvent to the point where the latex particles touch and begin to coalescence to form a film that is partially dried.<\/p>\n<p>The final stage involves the continued coalescence and cure (in a crosslinked system) to form a cured, dry adherent paint film.<\/p>\n<p>One of the key considerations in the use of waterborne coatings is the increased role that\u00a0<em>humidity<\/em>\u00a0in addition to\u00a0<em>temperature<\/em>\u00a0plays in the application and cure of these coatings. For example, to provide acceptable application\u00a0properties, both the temperature and humidity must be carefully controlled as illustrated in Figure II. The effect of humidity on coatings containing water-organic solvent can not be ignored.<\/p>\n<p>For example, the relative evaporation rate (E) of water at 0 \u2013 5% RH at 25\u00b0C is 0.31, but at 100% RH the E is 0. The E of 2-butoxyethanol, a commonly used cosolvent, is 0.077. At low RH, water evaporates more rapidly and thus the ratio of 2-butoxyethanol to water increases; the reverse is true at high humidity.<\/p>\n<p>When waterborne coatings are applied, if humidity is ignored, variation in application properties and appearance will result. For example if the temperature at application year round is 70\u00b0 &#8211; 80\u00b0 F, dry application (loss of flow) will result in winter months due to low humidity especially in colder climates and excessive flow will be observed in summer months (high humidity). An example of the later situation is that at about 65% Relative Humidity\/25 \u00b0C, a waterborne coating containing 10.6% 2-butoxyethanol of volatiles, the evaporation rate of water and 2-butoxyethanol is equal. This relative humidity is called the\u00a0<em>Critical Relative Humidity<\/em>.<\/p>\n<figure class=\"thumbnail wp-caption alignnone\" style=\"width: 800px\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ulprospector.ul.com\/media\/2015\/09\/RelativeHumidity.jpg\" alt=\"RelativeHumidity\" width=\"800\" height=\"288\" \/><figcaption class=\"caption wp-caption-text\">Figure II Application Dependence of Waterborne Coatings on Humidity and Temperature.<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>Table I illustrates the increased dependence of waterborne coatings on popping at various film thicknesses when compared to solvent born coatings.<\/p>\n<figure id=\"attachment_3074\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 457px\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ulprospector.ul.com\/media\/2015\/09\/waterborne3.png\" alt=\"Table I Critical Film Thickness for Popping in Microns \" width=\"457\" height=\"107\" \/><figcaption class=\"caption wp-caption-text\">Table I Critical Film Thickness for Popping in Microns, Organic Coatings, Wiley-Interscience, 2007, Zeno W. Wicks Jr., Frank N. Jones, S. Peter Pappas, Douglas A. Wicks<\/figcaption><\/figure>\n<p>Waterborne coatings include a wide variety of resin types such as <a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=Acrylic+Resins&amp;sug=1&amp;st=31\" target=\"_blank\" rel=\"noopener\">acrylic<\/a>,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=Alkyd+Resins&amp;sug=1&amp;st=31\" target=\"_blank\" rel=\"noopener\">alkyd<\/a>,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=Urethane+%26+Polyurethane+Resins&amp;sug=1&amp;st=31\" target=\"_blank\" rel=\"noopener\">urethane<\/a>,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=Polyester+Resins&amp;sug=1&amp;st=31\" target=\"_blank\" rel=\"noopener\">polyester<\/a>,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=Epoxy+Resins&amp;sug=1&amp;st=31\" target=\"_blank\" rel=\"noopener\">epoxy<\/a>,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=fluoropolymer&amp;st=31\" target=\"_blank\" rel=\"noopener\">fluoropolymer<\/a>, waterborne powder as well as curing chemistries including\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=UV+cure&amp;st=31\" target=\"_blank\" rel=\"noopener\">UV cure<\/a>,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=aminoplast&amp;st=31\" target=\"_blank\" rel=\"noopener\">aminoplast<\/a>, urethane,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=epoxy-polyamide&amp;st=31\" target=\"_blank\" rel=\"noopener\">epoxy-polyamide<\/a>,\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=oxidative&amp;st=31\" target=\"_blank\" rel=\"noopener\">oxidative<\/a>\u00a0and\u00a0<a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/search?k=air+dry%20thermoplastic&amp;st=31\" target=\"_blank\" rel=\"noopener\">air dry thermoplastic<\/a>\u00a0types. As Table II illustrates, particle size and particle architecture (e.g. core shell) also contributes to the ultimate film properties of the coating. In summary, once the unique issues associated with the use of waterborne coatings are fully considered they offer excellent performance in a wide variety of applications.<\/p>\n<figure id=\"attachment_3075\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 305px\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ulprospector.ul.com\/media\/2015\/09\/waterborne4.png\" alt=\"Table II \u2013 Characteristics of Various Water Based Resins\" width=\"305\" height=\"330\" \/><figcaption class=\"caption wp-caption-text\">Table II \u2013 Characteristics of Various Water Based Resins<\/figcaption><\/figure>\n<p>Prospector lists a number of suppliers of\u00a0<em>waterborne resins, surfactants, wetting and flow agents<\/em>\u00a0to meet a variety of requirements.<\/p>\n<hr \/>\n<h3>Ready to search materials?<\/h3>\n<p>Prospector has over 4,900 search results for resins!<\/p>\n<h3><a href=\"https:\/\/www.ulprospector.com\/en\/na\/Coatings\/Product\/search?k=resin&amp;st=31&amp;so=k_0&amp;sl=35274101\" target=\"_self\"><br \/>\nGet Material Data Now<br \/>\n<\/a><\/h3>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Waterborne coatings\u00a0are the largest type of coating technology used on a global basis and are expected to continue to grow as a percent of the total coatings market. By 2022, the\u00a0global market size\u00a0of waterborne coatings is expected to be over &hellip; <a href=\"https:\/\/ulprospector.ul.com\/3069\/pc-fundamentals-waterborne-resin-technology\/\">Continued<\/a><\/p>\n","protected":false},"author":12,"featured_media":3094,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"episode_type":"","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","footnotes":""},"categories":[16],"tags":[107,112,129,247],"ppma_author":[1249],"class_list":{"0":"post-3069","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-paint-coatings","8":"tag-waterborne-coatings","9":"tag-resin","10":"tag-wetting-agents","11":"tag-application","12":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fundamentals of Waterborne Resin Technology | Prospector<\/title>\n<meta name=\"description\" content=\"Learn about waterborne resin technology from a coatings industry expert.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ulprospector.ul.com\/3069\/pc-fundamentals-waterborne-resin-technology\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fundamentals of Waterborne Resin Technology | Prospector\" \/>\n<meta property=\"og:description\" content=\"Learn about waterborne resin technology from a coatings industry expert.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ulprospector.ul.com\/3069\/pc-fundamentals-waterborne-resin-technology\/\" \/>\n<meta property=\"og:site_name\" content=\"Prospector Knowledge Center\" \/>\n<meta property=\"article:published_time\" content=\"2015-09-18T14:00:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-07-11T19:06:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2015\/09\/WaterborneResins03.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"494\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Ron Lewarchik\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ron Lewarchik\" \/>\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:\\\/\\\/ulprospector.ul.com\\\/3069\\\/pc-fundamentals-waterborne-resin-technology\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/3069\\\/pc-fundamentals-waterborne-resin-technology\\\/\"},\"author\":{\"name\":\"Ron Lewarchik\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/#\\\/schema\\\/person\\\/21b1c19e5a3e88e83d018aeeeb06d5c1\"},\"headline\":\"Fundamentals of Waterborne Resin Technology\",\"datePublished\":\"2015-09-18T14:00:26+00:00\",\"dateModified\":\"2018-07-11T19:06:07+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/3069\\\/pc-fundamentals-waterborne-resin-technology\\\/\"},\"wordCount\":858,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/3069\\\/pc-fundamentals-waterborne-resin-technology\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ulprospector.ul.com\\\/wp-content\\\/uploads\\\/2015\\\/09\\\/WaterborneResins03.jpg\",\"keywords\":[\"Waterborne Coatings\",\"Resin\",\"wetting agents\",\"Application\"],\"articleSection\":[\"Paint &amp; 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Lewarchik, President and CEO of Chemical Dynamics, LLC, brings 40 years of paint and coatings industry expertise to his role as a contributing author with the Prospector Knowledge Center. As a contributing writer, Ron pens articles on topics relevant to formulators in the coatings industry. He also serves as a consultant for the Prospector materials search engine, advising on issues related to optimization and organization materials within the database. Ron's company, Chemical Dynamics, LLC (www.chemicaldynamics.net), is a full-service paint and coatings firm specializing in consulting and product development based in Plymouth, Michigan. Since 2004, he has provided consulting, product development, contract research, feasibility studies, failure mode analysis and more for a wide range of clients, as well as their suppliers, customers and coaters. He has also served as an Adjunct Research Professor at the Coatings Research Institute of Eastern Michigan University. As such, Ron was awarded a sub-grant from the Department of Energy to develop energy-saving coating technology for architectural applications, as well as grants from private industry to develop low energy cure, low VOC compliant coatings. He taught courses on color and application of automotive top coats, cathodic electro-coat and surface treatment. His experience includes coatings for automotive, coil, architectural, industrial and product finishing. Previously, Ron was the Vice President of Industrial Research and Technology, as well as the Global Director of Coil Coating Technology for BASF (Morton International). During his fourteen-year tenure with the company, he developed innovative coil coating commercial products primarily for roofing, residential, commercial and industrial building, as well as industrial and automotive applications. He was awarded fifteen patents for new resin and coating formulas. From 1974 to 1990, Ron held positions with Desoto, Inc. and PPG Industries. He was the winner of two R&amp;D awards for coatings utilizing PVDF resins, developed the first commercial high solids automotive topcoat and was awarded 39 U.S. patents for a variety of novel technologies he developed. He holds a Masters in Physical Organic Chemistry from the University of Pittsburgh and subsequently studied Polymer Science at Carnegie Mellon University. Ron lives in Brighton, Michigan with his family. 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Lewarchik, President and CEO of Chemical Dynamics, LLC, brings 40 years of paint and coatings industry expertise to his role as a contributing author with the Prospector Knowledge Center. As a contributing writer, Ron pens articles on topics relevant to formulators in the coatings industry. He also serves as a consultant for the Prospector materials search engine, advising on issues related to optimization and organization materials within the database. Ron's company, Chemical Dynamics, LLC (www.chemicaldynamics.net), is a full-service paint and coatings firm specializing in consulting and product development based in Plymouth, Michigan. Since 2004, he has provided consulting, product development, contract research, feasibility studies, failure mode analysis and more for a wide range of clients, as well as their suppliers, customers and coaters. He has also served as an Adjunct Research Professor at the Coatings Research Institute of Eastern Michigan University. As such, Ron was awarded a sub-grant from the Department of Energy to develop energy-saving coating technology for architectural applications, as well as grants from private industry to develop low energy cure, low VOC compliant coatings. He taught courses on color and application of automotive top coats, cathodic electro-coat and surface treatment. His experience includes coatings for automotive, coil, architectural, industrial and product finishing. Previously, Ron was the Vice President of Industrial Research and Technology, as well as the Global Director of Coil Coating Technology for BASF (Morton International). During his fourteen-year tenure with the company, he developed innovative coil coating commercial products primarily for roofing, residential, commercial and industrial building, as well as industrial and automotive applications. He was awarded fifteen patents for new resin and coating formulas. From 1974 to 1990, Ron held positions with Desoto, Inc. and PPG Industries. He was the winner of two R&amp;D awards for coatings utilizing PVDF resins, developed the first commercial high solids automotive topcoat and was awarded 39 U.S. patents for a variety of novel technologies he developed. He holds a Masters in Physical Organic Chemistry from the University of Pittsburgh and subsequently studied Polymer Science at Carnegie Mellon University. Ron lives in Brighton, Michigan with his family. 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