Base neutralized, stable, aqueous dispersion of a hydroxyl funct

Details Base neutralized, stable, aqueous dispersion of a hydroxyl funct Base neutralized, stable, aqueous dispersion of a hydroxyl funct

1993-02-03

1994-08-30

Reddick, Judy M.

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...

524833, C08L 3100

Patent

active

053428781

ABSTRACT:
A base neutralized, stable, aqueous dispersion of a hydroxyl functional acrylic polymer containing less than 1 percent acid, having a number average molecular weight ranging from about 500 to about 4500 and having an acid value of at least about 1.5 and no greater than about 10; is prepared from a vinyl monomer component containing at least about 50 percent 2-hydroxyethyl acrylate and at least one other comonomer. The proportion of each monomer is selected so that the resultant polymer forms stable dispersion in water without externally added surfactant. The hydroxyl functional acrylic polymer is especially advantageous in the formulation of waterborne coating compositions which are capable of crosslinking with aminoplast and polyisocyanate curing agents to form a cured film. Furthermore, the hydroxyl functional acrylic polymer is useful as a surfactant in the preparation of dispersion polymers by dispersion polymerization.

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