process for the preparation of a thermosetting powdered bekledingssamenstelling and coated material obtained by applying such a powdered bekledingssamenstelling.

摘要

1473454 Powder coating composition KANSAI PAINT CO Ltd 30 May 1975 [4 June 1974] 23565/75 Heading C3B Thermosetting powder coating compositions are prepared by: (1) copolymerizing 5-25% by wt. of glycidyl (meth)-acrylate with 95-75% by wt. of at least one other ethylenically unsaturated compound in a solvent having b.p. # 170‹ C. and the resultant copolymer having number average M.W. 2000-30,000 and melt viscosity 100-500 poises at 160‹ C.; (2) uniformly dispersing a pigment in the copolymer solution; (3) removing solvent at 170-220‹ C. under reduced pressure; (4) adding a di- or tricarboxylic acid cross-linking agent with heating at up to 120‹ C.; (5) pulverizing.