Adducts of carboxylic acids and isocyanates with epoxides, aqueo

Details Adducts of carboxylic acids and isocyanates with epoxides, aqueo Adducts of carboxylic acids and isocyanates with epoxides, aqueo

1988-08-17

1989-08-22

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

427386, 528 45, 528 49, 528112, 528115, 528365, C08L 7504

Patent

active

048597210

ABSTRACT:
The invention relates to polymers of formula (I) ##STR1## in which R.sup.1 and R.sup.2 represent optionally substituted alkylene, cycloalkylene or phenylene radicals, A represents hydrogen or carboxyl groups, B represents hydrogen or groups derived from carboxylic acids or isocyanates. The invention also relates to aqueous epoxy resin dispersions containing one or more polymers of general formula (I) in addition to bases, acid, one or more emulsifiers and, optionally, other active substances and auxiliaries typically used in epoxy resin dispersions and also water.
The invention also relates to a process for the production of such aqueous epoxy resin dispersions and to the use of such resins in processes for the autophoretic coating of metallic surfaces.

REFERENCES:
patent: 3585084 (1971-06-01), Steinbrecher et al.
patent: 3839097 (1974-10-01), Hall et al.
patent: 4318944 (1982-03-01), Hall
patent: 4347172 (1982-08-01), Nishida et al.

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