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US 6,191,211 B1Granted
Quick-set film-forming compositions
AssigneeThe Dow Chemical Company
InventorsRobert D. Mussell, Gene D. Rose, Donald L. Schmidt
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AssigneeThe Dow Chemical Company
InventorsRobert D. Mussell, Gene D. Rose, Donald L. Schmidt
Estimating the term…
The present invention relates to a quick set composition and a method for preparing the composition. The composition comprises an aqueous sol of a polymer having a backbone that contains pendant cationic groups and pendant acid groups. The sol is prepared by forming a solution of a polymer that contains pendant cationic groups and pendant acid groups in an aqueous-based solvent that contains water and a suitable organic solvent and removing a sufficient amount of the organic solvent from the solution to form a composition characterized by being reversibly dissolvable and reconstitutable by addition and removal of a suitable organic solvent. The composition of the present invention provides quick-set films that can be prepared in the absence additional surface active agents and with a substantial absence of organic solvents.
A composition comprising an aqueous suspension of polymer particles having an average particle size of not less than 10 nm and not more than 200 nm, which polymer has a backbone that contains (a) pendant acid groups;
A composition comprising an aqueous suspension of polymer particles having an average particle size of not less than 10 nm and not more than 200 nm, which polymer has a backbone that contains pendant acid groups, pendant cationic groups associated with a labile counterion, and structural units formed from the polymerization of a non-interfering monomer, wherein the ratio of the structural units formed from the polymerization of the non-interfering monomer to the sum of the pendant cationic groups and acid groups is not less than 70:30 and not more than 99:1, wherein the composition is further characterized by containing (a) not more than 0.5 weight percent of an additional surface active agent;
Dependencies are inferred from the claim text.