Process for pigmented thermosetting glycidyl (meth) acrylate...

Details Process for pigmented thermosetting glycidyl (meth) acrylate... Process for pigmented thermosetting glycidyl (meth) acrylate...

C - Chemistry, Metallurgy

08

J

400/7911

C08J 3/24 (2006.01) C08G 59/32 (2006.01) C08G 59/42 (2006.01) C08K 5/09 (2006.01) C08L 33/14 (2006.01) C09D 157/04 (2006.01)

Patent

CA 1052930

Abstract of the disclosure: A process for preparing a thermosetting powder coating composition comprising the steps of copolymerizing 5 to 25 wt.% of at least one of glycidyl acrylate and glycidyl methacrylate with 95 to 75 wt.% of an ethylenical- ly unsaturated compound in a solvent having a boiling point of up to 170° C to obtain a solution of copolymer, the copolymer having a number average molecular weight of 2,000 to 30,000 and a melt viscosity of 100 to 500 poises at 160° C, uniformly dispersing a pigment into the copolymer solution, removing the solvent from the resulting mixture at a temperature of 170 to 220° C and reduced pressure, thereafter admixing a di- or tri-carboxylic acid cross- linking agent with the mixture with heating at a temperature of up to 120° C, and pulverizing the solid mixture obtained.

228530

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