High molecular weight associative amphoteric polymers and uses thereof
First Claim
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1. An associative amphoteric polymer having a weight average molecular weight (Mw) greater than 50,000 g/mol consisting of:
- (a) between 0.005 and 10 mole % of at least one acrylamide-derived cationic monomer containing a hydrophobic chain and with the general formula;
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Abstract
High molecular weight associative amphoteric polymers for increasing the viscosity of aqueous solutions, comprise: at lease one cationic monomer derived from acrylamide bearing at least one hydrophobic chain of 8 to 30 carbon atoms; 1 to 99.9 mole % of at least one anionic monomer; and 1 to 99 mole % of one or several non-ionic water-soluble monomers. Aqueous solutions containing said polymers find uses in industry, in particular the oil, paper, water treatment, mining, cosmetics, textile, detergency industries and generally in all industrial techniques using thickened solutions.
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20 Claims
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1. An associative amphoteric polymer having a weight average molecular weight (Mw) greater than 50,000 g/mol consisting of:
(a) between 0.005 and 10 mole % of at least one acrylamide-derived cationic monomer containing a hydrophobic chain and with the general formula; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification