Isocyanate adduct dispersants for pigmented coating...

Details Isocyanate adduct dispersants for pigmented coating... Isocyanate adduct dispersants for pigmented coating...

C - Chemistry, Metallurgy

07

F

402/125, 117/183

C07F 7/10 (2006.01) C08F 30/08 (2006.01) C09D 3/82 (1985.01)

Patent

CA 1208231

TITLE ISOCYANATE ADDUCT DISPERSANTS FOR PIGMENTED COATING COMPOSITIONS ABSTRACT Dispersants which improve the gloss of acrylic paints are prepared by reacting the isocyanate groups of monomeric polyisocyanates or isocyanate acrylate polymers with (1) fatty amines, (2) lower alkylamines or alkanolamines and (3), optionally, aminosilanes. A formula for the dispersants may be written as: Image isocyanate residue, A is fatty amine residue with a = 20-80, B is lower alkylamine or alkanolamine residue with b = 80-20, and C is aminosilane residue with c = 0-40, the sum of a + b + c = 100, the (mole) percentage of isocyanate groups replaced.

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