Low-solvent aqueous pigment paste, a method of manufacturing...

Details Low-solvent aqueous pigment paste, a method of manufacturing... Low-solvent aqueous pigment paste, a method of manufacturing...

C - Chemistry, Metallurgy

09

D

C09D 17/00 (2006.01) C08G 59/50 (2006.01) C08G 59/56 (2006.01) C09B 67/20 (2006.01) C09D 5/44 (2006.01) C09D 163/00 (2006.01) C25D 13/06 (2006.01)

Patent

CA 2042134

T 31 956 - 1 - A B S T R A C T 1. Aqueous pigment paste, manufacture and use thereof. 2.1 Prior-art pigment pastes have a high content of solvent. The aim is to prepare an aqueous pigment paste with a low solvent content. 2.2 The aqueous pigment paste contains one or more water- dispersible or water-soluble pigment paste resins based on an epoxy resin with an aromatic content of 20 to 70 wt.%, a number average molecular weight of 400 to 10000, a hydroxy number less than 150, at least one oxazolidine group per molecule and amino groups neutralised by acid and non-quaternised (component A), pigments, fillers and/or conventional lacquer adjuvants (component B) the weight ratio of A to B being from 1 : 0.5 to 1 : 11, and 0 to 5 wt.% solvent and 25 to 75 wt.% water. 2.3 Aqueous pigment pastes for cathodic electrodeposition coating.

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