Associative monomers and polymers
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsMilagros C. Barron, John M. Wilkerson, III, Daniel W. Verstrat
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Abstract
Novel mono- and multi-functional non-ionic urethane monomers are prepared from surfactants comprising poly(ethylene oxide)(butylene oxide) copolymers, preferably C.sub.1 -C.sub.4 alkoxy-terminated, monohydric, ethylene oxide/butylene oxide block polymers and monoethylenically unsaturated aliphatic isocyanates. When polymerized with, e.g. acrylic acid or alkyl acrylates, these monomers provide copolymers exhibiting greatly enhanced thickening efficiency.
Claims14
A polymer of a non-ionic urethane monomer comprising at least two repeating units of the structure:
- ##STR11## wherein R, R.sup.1 and R.sup.2 are, independently, H, --CH.sub.3 or --CH.sub.2 CH.sub.3 ;
- R.sup.3 is a C.sub.1 -C.sub.4 linear or branched alkyl group;
- y is an integer from 1 to 50;
- x is an integer from 1 to 50;
- the sum of x+y is less than or equal to 100;
- A is a C.sub.2 -C.sub.20 alkyl, aryl or alkaryl alkylene group;
- and n is at least 1.
A polymer of a non-ionic urethane monomer comprising at least two repeating units of the structure:
- ##STR13## wherein R, R.sup.1 and R.sup.2 are H, --CH.sub.3 or --CH.sub.2 CH.sub.3 ;
- q is an integer from 1 to 50;
- p and r are, independently, integers from 1 to 50 the sum of p+q+r is less than or equal to 150;
- A is a C.sub.2 -C.sub.20 alkyl, or alkaryl alkylene group;
- and n is 1.
A copolymer comprising:
- (a) 30 to 99 mole percent monoethylenically unsaturated C.sub.3 -C.sub.8 -monocarboxylic acid, monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acid, esters of monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acids, esters of monoethylenically unsaturated C.sub.3 -C.sub.8 -monocarboxylic acid, vinyl esters of saturated C.sub.1 -C.sub.8 -monocarboxylic acid or a mixture thereof;
- and
- (b) 0.1 to 70 mole percent of a non-ionic urethane monomer comprising the structure:
- ##STR15## wherein R and R.sup.1 are, independently, H, --CH.sub.3 or --CH.sub.2 CH.sub.3 ;
- R.sup.2 is a C.sub.1 -C.sub.4 linear or branched alkyl group;
- y is an integer from 1 to 50;
- x is an integer from 1 to 50;
- the sum of x+y is less than or equal to 100;
- and A is a C.sub.2 -C.sub.20 alkyl, aryl or alkaryl alkylene group.
A copolymer comprising:
- (a) 30 to 99 mole percent monoethylenically unsaturated C.sub.3 -C.sub.8 -monocarboxylic acid, monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acid, esters of monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acids, esters of monoethylenically unsaturated C.sub.3 -C.sub.8 -monocarboxylic acid, vinyl esters of saturated C.sub.1 -C.sub.8 -monocarboxylic acid or a mixture thereof;
- and
- (b) 0.1 to 35 mole percent of a non-ionic urethane monomer comprising the structure:
- ##STR17## wherein R and R.sup.1 are, independently, H, --CH.sub.3 or --CH.sub.2 CH.sub.3 ;
- q is an integer from 1 to 50;
- p and r are, independently, integers from 1 to 50 the sum of p+q+r is less than or equal to 150;
- and A is a C.sub.2 -C.sub.20 alkyl, aryl or alkaryl alkylene group.
Dependencies are inferred from the claim text.