{"id":43708,"date":"2023-11-02T09:57:04","date_gmt":"2023-11-02T01:57:04","guid":{"rendered":"https:\/\/www.newtopchem.com\/?p=43708"},"modified":"2024-03-15T10:59:09","modified_gmt":"2024-03-15T02:59:09","slug":"covestro-desmodur-hl-ba-tdihdi-curing-agent-quick-drying-and-anti-yellowing","status":"publish","type":"post","link":"http:\/\/www.newtopchem.com\/archives\/43708","title":{"rendered":"Covestro Desmodur HL BA TDI+HDI curing agent quick drying and anti-yellowing","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<h2><strong>Product Features<\/strong><br \/>\nAromatic\/aliphatic polyisocyanate based on diisocyanate\/hexamethylene diisocyanate;<br \/>\nCombining various products of Desmophen or other resins containing hydroxyl components to prepare quick-drying and good gloss retention varnishes, paints or two-component polyurethane coatings<\/h2>\n<h2><strong>Supply Form<\/strong><br \/>\nAbout 60% in butyl acetate solution<\/h2>\n<div class=\"bt-video-container\"><div style=\"width: 100%;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-43708-1\" width=\"1200\" height=\"675\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.newtopchem.com\/video\/TDI.mp4?_=1\" \/>Toluene diisocyanate (TDI) can undergo trimerization under catalytic action to form trimers containing isocyanurate rings. TDI trimer has the advantages of low volatility, low toxicity, high functionality, good thermal stability, good corrosion resistance, etc. It is often used as a polyurethane-curing agent in coatings and adhesives. In the 1970s, many foreign companies began to industrially produce and apply such products, such as Bayer, BASF, Dow, etc. At present, high-performance, low-free monomer TDI trimers still need to rely heavily on imports.<br \/>In this study, the catalyst NT CAT P100 was used to synthesize TDI trimer polyurethane curing agent. The experimental results show that the catalyst has the advantages of a fast catalytic rate, high activity, and low reaction temperature. At 40 \u2103, the reaction was catalyzed by dropwise addition, and the end of the reaction could be reached within 8 h, resulting in a low free monomer content TDI trimer.<br \/><\/video><\/div><\/div>\n<h2><strong>Specifications<\/strong><\/h2>\n<table class=\"Table\" border=\"1\" cellspacing=\"0\">\n<tbody>\n<tr>\n<td>\n<h2><strong>Features<\/strong><\/h2>\n<\/td>\n<td>\n<h2><strong>Value<\/strong><\/h2>\n<\/td>\n<td>\n<h2><strong>Measurement unit<\/strong><\/h2>\n<\/td>\n<td>\n<h2><strong>Method<\/strong><\/h2>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h2><strong>Non-volatile component content<\/strong><\/h2>\n<\/td>\n<td>\n<h2>60.0\u00b12.0<\/h2>\n<\/td>\n<td>\n<h2>%<\/h2>\n<\/td>\n<td>\n<h2>DIN EN ISO 3251<\/h2>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h2><strong>NCOcontent<\/strong><\/h2>\n<\/td>\n<td>\n<h2>10.5\u00b10.5<\/h2>\n<\/td>\n<td>\n<h2>%<\/h2>\n<\/td>\n<td>\n<h2>DIN EN ISO 11 909<\/h2>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h2><strong>Viscosity@23\u00b0C<\/strong><\/h2>\n<\/td>\n<td>\n<h2>2200\u00b1100028<\/h2>\n<\/td>\n<td>\n<h2>\u2103<\/h2>\n<\/td>\n<td>\n<h2>DIN EN ISO 1523<\/h2>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h2><strong>density,20\u2103<\/strong><\/h2>\n<\/td>\n<td>\n<h2>about1.13<\/h2>\n<\/td>\n<td>\n<h2>g\/ml<\/h2>\n<\/td>\n<td>\n<h2>DIN EN ISO 2811-1<\/h2>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>*This data is general information and is not part of the product manual.<\/h2>\n<h2><\/h2>\n<h2><strong>Features\/Applications<\/strong><br \/>\nThe wood lacquer made of it is particularly quick-drying at first and easy to sand. A full-bodied clear or base coat can be obtained in just a few coats.<\/h2>\n<h2><\/h2>\n<h2><strong>Compatibility<\/strong><br \/>\nDesmodur HL BA is compatible with many Desmophen polyesters and has only limited compatibility with hydroxyacrylates. In general, Desmodur HL BA is very compatible with standard Desmodur products.<\/h2>\n<h2><\/h2>\n<h2><strong>Solubility\/Dilution<\/strong><br \/>\nDesmodur\u00ae HL BA generally has good compatibility with the following solvents. However, the storage stability of the prepared solutions must be tested. Desmodur HL BA can be diluted with ethyl acetate, butyl acetate and 1-methoxypropyl acetate-2. Aromatic solvents are not true solvents and have only limited compatibility as diluents. Solutions with low base material content will appear cloudy and precipitate after prolonged storage. Polyurethane grade solvents should be used (low water content<br \/>\nat 0.05%). These solvents should not contain reactive groups.<\/h2>\n<h2><\/h2>\n<h2><strong>Save<\/strong><br \/>\n\u2013 Store in original Covestro airtight container.<br \/>\n\u2013 Recommended storage temperature: 0-30\u00b0C.<br \/>\n\u2013 Protect from moisture, heat and foreign substances.<br \/>\nGeneral Information: This product is sensitive to moisture. High temperature storage will result in increased viscosity and decreased NCO content.<\/h2>\n<h2><\/h2>\n<h2><strong>Storage Time<\/strong><br \/>\nCovestro declares that, provided that the product has been stored in full compliance with the requirements set out in the \u201cStorage\u201d clause above and has been properly handled, the product has been shipped from the date of shipment stated on the transport document Compliance with the specifications or characteristic values \u200b\u200bstated in the above clause \u201cSpecification or characteristic values\u201d (as applicable) within 6 months. If the product exceeds the above-mentioned 6-month period, it does not mean that it no longer meets the set values \u200b\u200bin the specifications or characteristic values. However, Covestro recommends that products older than 6 months from the shipping date be tested before use to confirm that they still comply with the values \u200b\u200bset in the specifications or characteristic values. Covestro makes no promises and accepts no responsibility or liability for non-conformity to specifications or set values \u200b\u200bin characteristic values \u200b\u200bfor products older than 6 months from the date of shipment.<\/h2>\n<h2><\/h2>\n<h2><strong>Security<\/strong><br \/>\nProduct data sheets are only valid in conjunction with their corresponding, most current safety data sheets. Any updates to safety-related information \u2013 as required by regulation \u2013 will only be reflected in the Safety Data Sheet, copies of which will be revised and distributed accordingly. For relevant information, including up-to-date classification and labelling, applications, handling methods and further safety-related data, please refer to the currently valid Safety Data Sheet.<\/h2>\n<h2>The set values \u200b\u200bin the characteristic values \u200b\u200bassume no responsibility and liability.<\/h2>\n<h2><\/h2>\n<h2><strong>Security<\/strong><br \/>\nProduct data sheets are only valid in conjunction with their corresponding, most current safety data sheets. Any updates to safety-related information \u2013 as required by regulation \u2013 will only be reflected in the Safety Data Sheet, copies of which will be revised and distributed accordingly. For relevant information, including up-to-date classification and labelling, applications, handling methods and further safety-related data, please refer to the currently valid Safety Data Sheet.<\/h2>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Product Features Aromatic\/aliphatic polyisocyanate base&#8230;<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[14240],"tags":[14778],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts\/43708"}],"collection":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/comments?post=43708"}],"version-history":[{"count":2,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts\/43708\/revisions"}],"predecessor-version":[{"id":46455,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/posts\/43708\/revisions\/46455"}],"wp:attachment":[{"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/media?parent=43708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/categories?post=43708"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.newtopchem.com\/wp-json\/wp\/v2\/tags?post=43708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}