High efficiency rheology modifers with cationic components and use thereof
View Patent ↗The presently disclosed claimed inventive concept(s) relates generally to a rheology modifier composition and an aqueous protective coating composition containing the rheology modifier composition. More particularly, the presently disclosed and/or claimed inventive concept(s) relates to a rheology modifier composition comprising (a) about 50 to about 99% by weight of a water soluble polymer and about 1 to about 50% by weight of a cationic polymer, wherein the cationic polymer is produced by polymerizing a quaternized monomer or by polymerizing a quaternized monomer and a non-quaternized monomer. Additionally, the presently disclosed and/or claimed inventive concept(s) relates generally to the methods of making the rheology modifier composition and the aqueous protective coating composition.
1. A rheology modifier composition, comprising:
(a) about 50 to about 90% by weight of a water soluble polymer, wherein the water soluble polymer is a cellulose ether selected from the group consisting of hydroxyethyl cellulose, hydrophobically modified hydroxyethyl cellulose, and methylhydroxyethyl cellulose, and wherein the cellulose ether is a cross-linked cellulose ether;
(b) about 10 to about 50% by weight of a cationic polymer, wherein the cationic polymer is produced by polymerizing a quaternized monomer, further wherein the cationic polymer is selected from the group consisting of acrylamidopropyl trimonium chloride and acrylamidopropyl trimonium chloride/acrylamide copolymer; and
(c) a dispersant selected from the group consisting of polycarboxylic acids, carboxylated polyelectrolyte salts, tripolyphosphate salts and tetrapotassium pyrophosphate, ethoxylated fatty alcohols, amino alcohols, acrylic copolymers, naphthalene sulfonic acid-formaldehyde adducts, sulfonated fatty acids, and combinations thereof.
2. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (I):
wherein R is hydrogen or methyl, Q is NH or O, R 1 is alkyl C 2 -C 6 , R 2 -R 4 are each individually alkyl C 1 -C 6 , and X is a halogen or sulfonate.
3. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (II):
wherein R is hydrogen or alkyl C 1 -C 6 , R 1 is hydrogen, alkyl C 1 -C 6 , allyl or aryl; R 2 and R 3 are individually hydrogen, alky C 1 -C 6 , allyl or aryl; and X is halogen or sulfonate.
4. The rheology modifier composition of claim 3 , wherein the quaternized monomer is diallyldialkylammonium salt.
5. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (III):
wherein R is alkyl C 1 -C 6 , R 1 -R 3 are each individually alkyl C 1 -C 8 , R 4 -R 7 are each individually hydrogen or alkyl C 1 -C 6 , and X is halogen or sulfonate.
6. The rheology modifier composition of claim 5 , wherein the quaternized monomer is vinylbenzyl ammonium salt.
7. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (IV):
wherein R is alkyl C 1 -C 6 , R 1 -R 4 are each individually hydrogen or alkyl C 1 -C 6 , and X is halogen or sulfonate.
8. The rheology modifier composition of claim 7 , wherein the quaternized monomer is selected from the group consisting of 1-ethyl-4-vinylpyridinium chloride, 1-ethyl-4-vinylpyridinium bromide, and 1-ethyl-4-vinylpyridinium methyl sulfonate.
9. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (V):
wherein R is alkyl C 1 -C 6 , and R 1 -R 3 are each individually alkyl C 1 -C 4 .
10. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (VI):
wherein R and R 1 are each individually alkyl C 2 -C 6 , and R 2 -R 4 are each individually alkyl C 1 -C 6 .
11. The rheology modifier composition of claim 10 , wherein the quaternized monomer is polyquaternium 51, polyquaternium 61 and polyquaternium 64.
12. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (VII):
wherein R is hydrogen or methyl, Q is NH or O, R 1 is alkyl C 2 -C 6 , and R 2 and R 3 are each individually alkyl C 1 -C 6 .
13. The rheology modifier composition of claim 12 , wherein the quaternized monomer is dimethylaminopropyl methacrylamide and dimethylaminoethyl methacrylamide.
14. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (VIII):
wherein R, R 1 , and R 2 are each individually hydrogen or alkyl C 1 -C 6 .
15. The rheology modifier composition of claim 14 , wherein the quaternized monomer is 1-vinylimidazole.
16. The rheology modifier composition of claim 1 , wherein the quaternized monomer has the formula (IX):
wherein R, R 1 , R 2 and R 3 are each individually hydrogen or alkyl C 1 -C 6 .
17. The rheology modifier composition of claim 16 , wherein the quaternized monomer is 4-viylpyridine.
18. The rheology modifier composition of claim 1 , wherein the cross-linker comprises glyoxal.