公开(公告)号：US20150291840A1

公开(公告)日：2015-10-15

申请号：US14438954

申请日：2013-10-25

Applicant: BAYER MATERIALSCIENCE AG

Inventor： Marc Claudius Schrinner ,  Heinz-Dietmar Gewiss ,  Uwe Klippert ,  Martin Melchiors

IPC: C09D175/06 ,  C08K3/36

CPC classification number: C09D175/06 ,  B82Y30/00 ,  C08G18/0823 ,  C08G18/12 ,  C08G18/4216 ,  C08G18/44 ,  C08G18/725 ,  C08G18/73 ,  C08G18/792 ,  C08K3/346 ,  C08K3/36 ,  C08K3/04 ,  C08K3/34 ,  C08L75/06

Abstract: The present invention relates to a coating composition that is suitable in particular for the production of coatings that can be matted. The coating composition comprises a) an aqueous dispersion of a hydroxy-functional prepolymer, obtainable by reaction of at least the following components: i) a component comprising hydroxy groups, ii) a polyester polyol comprising hydroxy groups, iii) a polyisocyanate comprising isocyanate groups, iv) a compound which comprises at least two groups reactive towards isocyanate groups and at least one group capable of anion formation, v) water, wherein components i)-iii) and the ratio of components i)-iii) are so chosen that an excess of hydroxy groups is present relative to the isocyanate groups, b) nanoparticles having a number-average particle size of from 1 to 1000 nm, and c) a crosslinker comprising at least two groups reactive towards hydroxy groups. The invention further provides a process for the preparation of the coating composition, the use of the coating composition for producing a coating on a substrate, and a coating obtainable by applying the coating composition to a substrate.

Abstract translation: 本发明涉及一种涂料组合物，其特别适用于生产可消光的涂料。 该涂料组合物包含：a）羟基官能预聚物的水分散体，其通过至少以下组分的反应获得：i）包含羟基的组分，ii）包含羟基的聚酯多元醇，iii）包含异氰酸酯基团的多异氰酸酯 iv）包含至少两个对异氰酸酯基团反应的基团和至少一个能够形成阴离子的基团的化合物，v）水，其中组分i）-iii）和组分i）-iii）的比例被选择为使得 相对于异氰酸酯基团存在过量的羟基，b）数均粒径为1-1000nm的纳米颗粒，和c）包含至少两个对羟基具有反应性的基团的交联剂。 本发明还提供了一种制备涂料组合物的方法，该涂料组合物在基材上制备涂料的用途，以及通过将涂料组合物涂布在基材上而得到的涂层。