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US 5,962,556 AGranted
Functional latexes resistant to hydrolysis
AssigneeEastman Chemical Company
InventorJames Wayne Taylor
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Abstract
The present invention is directed to a functional latex polymer composition resistant to hydrolysis which contains a vinyl polymer of copolymerizable monoethylenically unsaturated monomers where at least one monomer contains at least one hydrolyzable functional group. The combined oxygen and nitrogen content of the vinyl polymer is up to about 27 wt %, based on the monomers in the vinyl polymer.
Claims20
A functional latex polymer composition, comprising:
- a vinyl polymer of copolymerizable monoethylenically unsaturated monomers wherein at least one monomer contains at least one pendant hydrolyzable functional moiety;
- wherein the combined oxygen and nitrogen content of said copolymerizable monoethylenically unsaturated monomers is up to about 27 wt %, based on the total weight of said copolymerizable monoethylenically unsaturated monomers;
- and
- wherein said vinyl polymer is resistant to hydrolysis.
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A method for producing a functional latex polymer, comprising:
- forming an aqueous monomer mixture comprising copolymerizable monoethylenically unsaturated monomers at least one of which contains at least one pendant hydrolyzable functional moiety, wherein the combined oxygen and nitrogen content of said monomer mixture ranges up to a level of up to about 27 wt %, based on the total weight of said monomer mixture;
- adjusting the temperature of said monomer mixture to a level of from 55.degree. C. to 90.degree. C.;
- and
- polymerizing said monomer mixture to form a functional latex polymer composition resistant to hydrolysis.
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Dependencies are inferred from the claim text.