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1. 发明授权

US5506325A Coating composition having improved rheology control and copolymer, mixture and process therefor 失效
标题翻译：具有改进的流变控制和共聚物，混合物和方法的涂料组合物
公开(公告)号：US5506325A
公开(公告)日：1996-04-09
申请号：US356808
申请日：1994-12-15
申请人： Shanti Swarup , James R. Christenson , B. Keith Johnston , James B. O'Dwyer , Edward R. Coleridge , Andrew T. Carroll
发明人： Shanti Swarup , James R. Christenson , B. Keith Johnston , James B. O'Dwyer , Edward R. Coleridge , Andrew T. Carroll
IPC分类号： B05D5/06 , C08F20/10 , C08F220/10 , C09D4/06 , C09D155/00 , C09D163/00 , C09D175/04 , C09K3/00
CPC分类号： C09D155/005 , C08F20/10 , C09D175/04
摘要： A non-gelled copolymer is prepared from: I) at least one ethylenically unsaturated aliphatic or aromatic monomer that is unsubstituted with reactive functionality and/or has hydroxyl functionality, II) an ethylenically unsaturated monomer having one acid functional group; and III) an ethylenically unsaturated oligomeric monomer having a number average molecular weight of about 1500 to about 4000 and which is derived from a hydroxyl functional acid having a predominantly hydrocarbon chain of from about 10 to 19 carbon atoms. The amounts of the monomers based upon the total solid weight of reactants used to prepare the copolymer are: about 80 to about 95 for I; about 3 to about 6 percent for II; and about 2 to about 14 percent for III. The ungelled copolymer can be present with hydrophobic amorphous fumed silica in amounts of about 50 to about 90 for the copolymer and about 10 to about 50 all as percentages by weight based on the weight of the two components. The ungelled copolymer alone or with the silica can be present along with coating components like film forming polymers, aqueous and/or organic solvent vehicles and optionally one or more pigments. In the colored and/or clear coating compositions and in the methods of their application to substrates, the amount of the silica is up to about 2.5 percent by weight, and the ratio of the copolymer to the silica is generally in the range of from about 9:1 to 1:1 to yield coatings with good rheology control.
摘要翻译：非胶凝共聚物由以下制备：I）至少一种未反应的官能团和/或具有羟基官能团的烯属不饱和脂族或芳族单体，II）具有一个酸官能团的烯属不饱和单体; 和III）数均分子量为约1500至约4000的烯键式不饱和低聚单体，其衍生自主要具有约10至19个碳原子的烃链的羟基官能酸。基于用于制备共聚物的反应物的总固体重量，单体的量为：对于I为约80至约95; II的约3〜6％而III级约为2％至14％。无凝胶共聚物可以以共聚物的约50至约90的量的疏水性无定形热解法二氧化硅存在，并且基于两种组分的重量以重量百分数计约10至约50。单独或与二氧化硅的未凝胶共聚物可以与涂层组分如成膜聚合物，水性和/或有机溶剂载体以及任选的一种或多种颜料一起存在。在有色和/或透明涂料组合物及其应用于底物的方法中，二氧化硅的量高达约2.5重量％，并且共聚物与二氧化硅的比例通常在约 9：1至1：1，以获得具有良好流变学控制的涂层。

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