Sulfonium group-containing pigment grinding resin and pigment paste for electrodeposition paint
申请人:Nippon Paint Co. Ltd.
公开号:EP0662500A2
公开(公告)日:1995-07-12
A pigment grinding resin represented by the formula :
wherein, Ep is a residue of an epoxy resin having an epoxy equivalent of 150 to 2000 and a hydroxyl group equivalent of 300 to 4000; R1 and R2 represent a different group each other and respectively selected from the group consisting of hydroxymethyl, 2-hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl, 4-hydroxybutyl and a group of the formula -CH2CH(OH)CH2R3 (wherein, R3 is a hydroxyl group or a hydroxyalkyl group having 1 to 10 carbon atoms); R4 is a group selected from the group consisting of a hydrogen atom and alkyl, hydroxyalkyl and alkylamide groups having 1 to 5 carbon atoms; m is a numerical value of 0.1 to 2.0 ; A is a residue of diisocyanate selected from the group consisting of aliphatic, alicyclic and aromatic diisocyanates having 4 to 20 carbon atoms ; B is a residue of a compound selected from the group consisting of alcohol, amine, carboxylic acid, oxime and caprolactam having 1 to 20 carbon atoms ; and n is a numerical value of 0.1 to 2.0.
A pigment grinding resin of the present invention has excellent dispersibility. This invention provides a pigment grinding resin and a pigment paste capable of affording a coated film having good appearance and corrosion resistance.
一种颜料研磨树脂,由式:
其中,Ep 是环氧树脂的残余物,其环氧当量为 150 至 2000,羟基当量为 300 至 4000;R1 和 R2 代表彼此不同的基团,并分别选自羟甲基、2-羟乙基、2-羟丙基、3-羟丙基、4-羟丁基和式-CH2CH(OH)CH2R3 所组成的基团(其中,R3 是羟基或具有 1 至 10 个碳原子的羟烷基);R4 是选自氢原子和具有 1 至 5 个碳原子的烷基、羟烷基和烷基酰胺基团的基团;m 的数值为 0.1至2.0;A是选自具有4至20个碳原子的脂肪族、脂环族和芳香族二异氰酸酯组的二异氰酸酯的残余物;B是选自具有1至20个碳原子的醇、胺、羧酸、肟和己内酰胺组的化合物的残余物;n是数值0.1至2.0。
本发明的颜料研磨树脂具有优异的分散性。本发明提供了一种颜料研磨树脂和颜料浆料,能够形成具有良好外观和耐腐蚀性能的涂膜。