Aqueous colloidal dispersions of tertiary amine salts of urea-ur

Details Aqueous colloidal dispersions of tertiary amine salts of urea-ur Aqueous colloidal dispersions of tertiary amine salts of urea-ur

1978-09-05

1980-05-20

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

4284231, 528 44, 528 48, 528 51, 528 52, 525453, C08L 7504

Patent

active

042038839

ABSTRACT:
There are disclosed aqueous colloidal dispersions of tertiary amine salts of urea-urethane polymers of triamine-containing polyamines and isocyanate-terminated, urethane prepolymers having carboxylic groups. The urea-urethanes have sufficient tertiary amine neutralized, carboxylic groups to provide stable, aqueous dispersions having infinite dilutability with water, and the solids of the amine-neutralized dispersions are essentially of colloidal size. Carboxylic groups are supplied by polyol reactants employed in making the prepolymers. The colloidal, urea-urethane polymers may be stably dispersed in the aqueous medium, even in the absence of substantial amounts of cosolvents, and are useful in, for instance, coating compositions to provide water-resistant coatings.

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