公开(公告)号：EP2869941A1

公开(公告)日：2015-05-13

申请号：EP13732980.1

申请日：2013-07-03

申请人： Bayer Materialscience AG

发明人： SHIGEMORI, Tomokazu ,  MORITA, Hiroshi

IPC分类号： B05D7/00 ,  C08G18/79

CPC分类号： B05D7/532 ,  B05D7/53 ,  C08G18/02 ,  C08G18/022 ,  C08G18/6229 ,  C08G18/6254 ,  C08G18/73 ,  C08G18/7818 ,  C08G18/7831 ,  C08G18/7837 ,  C08G18/79 ,  C08G18/791 ,  C08G18/792 ,  C08G18/80 ,  C08G18/8061 ,  C09D175/04 ,  C09D175/06 ,  Y10T428/31551 ,  Y10T428/31554

摘要： [Problem] In a coating method of a two-coat one-bake system where a clear coat paint is coated after a base coat paint is coated, then these two coated layers are simultaneously hardened, adhesive strength between the two coated layers is to increase in comparison with the conventional method. [Solution] Provided is a coating method; A specific hardener is used in the clear coat paint. The hardener is one containing a polyisocyanate derived from 1,6-hexamethylene diisocyanate, satisfying all the following conditions: 1) Hardener does not virtually include diisocyanate monomer, 2) Viscosity of hardener is not more than 1000 mPa·s/23° C., 3) Content of HDI trimer in hardener is not less than 60 weight %, and 4) Content of HDI dimer in hardener is less than 10 weight %.

摘要翻译： [问题]为了提高在涂布水性底漆涂料的双涂层单烘烤系统的涂布方法中水性底涂层与透明涂层之间的粘合强度，然后涂布透明涂层涂料，并且这些 与传统方法相比，两个涂覆膜同时硬化。 [解决方案]提供在透明涂层涂料中使用特定硬化剂的涂布方法。 即，固化剂的特征在于，（1）含有（i）包含三聚体的1,6-六亚甲基二异氰酸酯衍生物，实际上不含二异氰酸酯单体的反应产物，和（ii）具有活性 氢和亲水基团; 和（2）在23℃下的粘度不大于1,000mPa·s。 此处，兼具活性氢和亲水性基团的化合物是具有式（I）所示的含活性氢基团和磺基的化合物，优选用叔胺中和硬化剂中的磺基。 式（I）X-R-SO 3 H（式中，X为氨基，烷基氨基，环烷基氨基或羟基，R为脂肪族和/或脂环族烃基。

公开(公告)号：EP2869940A1

公开(公告)日：2015-05-13

申请号：EP13732978.5

申请日：2013-07-03

申请人： Bayer Materialscience AG

发明人： SHIGEMORI, Tomokazu ,  MORITA, Hiroshi

IPC分类号： B05D7/00 ,  C08G18/79

CPC分类号： B05D7/532 ,  B05D7/53 ,  C08G18/02 ,  C08G18/022 ,  C08G18/6229 ,  C08G18/6254 ,  C08G18/73 ,  C08G18/7818 ,  C08G18/7831 ,  C08G18/7837 ,  C08G18/79 ,  C08G18/791 ,  C08G18/792 ,  C08G18/80 ,  C08G18/8061 ,  C09D175/04 ,  C09D175/06 ,  Y10T428/31551 ,  Y10T428/31554

摘要： [Problem] In a coating method of a two-coat one-bake system where a clear coat paint is coated after a base coat paint is coated, then these two coated layers are simultaneously hardened, adhesive strength between the two coated layers is to increase in comparison with the conventional method. [Solution] Provided is a coating method; A specific hardener is used in the clear coat paint. The hardener is one containing a polyisocyanate derived from 1,6-hexamethylene diisocyanate, satisfying all the following conditions: 1) Hardener does not virtually include diisocyanate monomer, 2) Viscosity of hardener is not more than 1000 mPa·s/23° C., 3) Content of HDI trimer in hardener is not less than 60 weight %, and 4) Content of HDI dimer in hardener is less than 10 weight %.

摘要翻译： [问题]在涂布底漆之后涂布透明涂料的双层单烘烤系统的涂布方法中，这两层涂层同时硬化，两层涂层之间的粘合强度增加 与传统方法相比。 [溶液]提供涂布方法; 在透明涂料中使用一种特定的硬化剂。 固化剂是含有1,6-六亚甲基二异氰酸酯的多异氰酸酯，其满足以下所有条件：1）固化剂实际上不包括二异氰酸酯单体，2）硬化剂粘度不大于1000mPa·s / 23℃ ，3）硬化剂中HDI三聚体的含量不小于60重量％，4）硬化剂中HDI二聚体的含量小于10重量％。