Process for the preparation of a self-emulsifiable,...

Details Process for the preparation of a self-emulsifiable,... Process for the preparation of a self-emulsifiable,...

C - Chemistry, Metallurgy

08

L

400/7413

C08L 75/04 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C08L 85/00 (2006.01)

Patent

CA 1036738

ABSTRACT OF THE DISCLOSURE A process for the preparation of anionic thermosetting resin emulsions, comprising the steps of (1) reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene-polyamine to form a polyurethane-urea-polyamine, (2) then reacting the thus-formed polyurethane- urea-polyamine with an epihalohydrin, (3) reacting the resulting reaction product of step (2) with a cyclic dicarboxylic acid anhydride, and then (4) mixing the resulting reaction product of step (3) with an aqueous solution of a basic substance to form an emulsion which is a stable, anionic, self- emulsified, self-crosslinking emulsion containing a polyurethane resin pos- sessing excellent tensile strength, elongation and other mechanical properties.

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