Preparation of aqueous dispersions of condensates of urea and CH

Details Preparation of aqueous dispersions of condensates of urea and CH Preparation of aqueous dispersions of condensates of urea and CH

1985-02-22

1987-05-05

Ivy, C. Warren

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524512, 524598, C08L 6124

Patent

active

046633790

ABSTRACT:
A process for the preparation of stable aqueous aldehyde resin dispersions and for the production of surface coating binders.
For this purpose, a melt or highly concentrated solution of a polycondensate of urea and a CH-acidic aldehyde, with or without formaldehyde, is dispersed in water in the presence of an organic protective colloid and, if required, an emulsifier.
These aqueous resin dispersions can be used, in combination with other film formers, as surface coating binders.

REFERENCES:
patent: 3772292 (1973-11-01), Martin
patent: 3836495 (1974-09-01), Berstein
patent: 4220751 (1980-09-01), Petersen et al.
patent: 4243797 (1981-01-01), Petersen et al.
patent: 4298512 (1981-11-01), Sartoretto
patent: 4455416 (1984-01-01), Floyd

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