Aqueous compositions based on acid-functional acrylic silanol po

Details Aqueous compositions based on acid-functional acrylic silanol po Aqueous compositions based on acid-functional acrylic silanol po

1991-05-22

1992-11-10

Schofer, Joseph L.

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...

524458, 524558, 524560, C08L 1302

Patent

active

051624206

ABSTRACT:
Disclosed is an aqueous composition containing a vinyl-type polymer product having hydrolyzable silyl groups which aqueous composition is stable at relatively high solids for such a composition and yet cures at relatively low temperatures upon the evaporation of water. More particularly, disclosed is a stable, aqueous, colloidal silica-free, dispersion or solution containing a solution-polymerized vinyl-type polymer having acid functionality sufficient to provide an acid value of from 5 to 160 and having a hydroxyl value of less than or equal to 10 and sufficient hydrolyzable silyl groups to provide a Si content in the range of from 0.40 to 6.0 percent by weight based on the total weight of the vinyl-type polymer. The vinyl-type polymer is characterized in that a composition consisting of at least 25 percent by weight of the polymer in water remains stable in a closed container for at least 24 hours at a temperature of 48.9 degrees Celsius.
Also disclosed is a stable, aqueous, colloidal silica-free, coating composition having a total organic resin solids content of greater than or equal to 25 percent by weight, at least 50 percent by weight of the total organic resin solids content consisting of the aforesaid solution-polymerized vinyl-type polymer.

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