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US 8,674,021 B2Granted
Sulfonated graft copolymers
AssigneeAkzo Nobel N.V.
InventorsKlin A. Rodrigues, Jannifer Sanders
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Abstract
Sulfonated graft copolymer obtained by radical graft copolymerization of one or more synthetic monomers in the presence of hydroxyl-containing naturally derived materials. The graft copolymer includes 0.1 to 100 wt %, based on weight of the total synthetic monomers, of at least one monoethylenically unsaturated monomer having a sulfonic acid group, monoethylenically unsaturated sulfuric acid ester or salt thereof, with the monomer and hydroxyl-containing naturally derived materials present in a weight ratio of 5:95 to 95:5.
Claims26
A sulfonated graft copolymer comprising:
- one or more synthetic monomers, wherein the one or more synthetic monomers is at least one monoethylenically unsaturated sulfonated monomer having a sulfonic acid group or salt thereof, wherein the sulfonated monomer is about 2 to about 50 percent by weight of the total synthetic monomer weight of the copolymer;
- and
- a hydroxyl-containing naturally derived material selected from the group consisting of corn syrups and maltodextrins,
- wherein the one or more synthetic monomers and hydroxyl-containing naturally derived materials are present in a weight ratio of 50:50 to 10:90, respectively, and
- wherein the sulfonated graft copolymer is obtained by radical graft copolymerization of the one or more synthetic monomers in the presence of the hydroxyl-containing naturally derived material;
- and wherein the sulfonated graft copolymer further comprises 5 to 90 wt %, based on total weight of the one or more synthetic monomers, of at least one monoethylenically unsaturated C3-C10 carboxylic acid, or salt thereof, or 0.1 to 50 wt %, based on total weight of the one or more synthetic monomers, of at least one monoethylenically unsaturated C4-C10 dicarboxylic acid, or salt thereof
3 more elements
Dependencies are inferred from the claim text.