Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1978-05-30
1980-03-18
Michl, Paul R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 296E, 260 332R, 260 334R, C08K 505
Patent
active
041939042
ABSTRACT:
Methods are disclosed for the production of a water dispersible solution of acidic copolymer in water soluble polyol with controlled limited reaction between the copolymer and the polyol. This method comprises copolymerizing monoethylenically unsaturated monomers including a proportion of carboxyl-functional monomer providing dispersibility in water with the aid of a base and from 0.5%-5%, based on the total weight of monomers, of a monoethylenically unsaturated monomer carrying a reactive group selected from dicarboxylic acid anhdyride functionality and N-methylol functionality, the copolymerization being carried out in solution in a water soluble polyol. This copolymerization is preceded by or carried out under conditions causing substantially complete reaction between the anhydride or the N-methylol functionality in the reactive monomer, and the hydroxy groups in the polyol. Aqueous coating compositions are provided by dispersing the copolymer solution in water with the aid of a volatile base.
REFERENCES:
patent: 3352806 (1967-11-01), Hicks
patent: 3804790 (1974-04-01), Sekmakas
patent: 3860549 (1975-01-01), Sekmakas
patent: 4065415 (1977-12-01), Christenson
patent: 4079042 (1978-03-01), Topft
Sekmakas Kazys
Shah Raj
DeSoto, Inc.
Michl Paul R.
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