Easy to disperse polycarboxylic acid thickeners
AssigneeThe B. F. Goodrich Company
InventorsCarl J. Long, II, Zahid Amjad, William F. Masler, III, William H. Wingo
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Abstract
An interpolymer of at least one olefinically unsaturated carboxylic acid containing at least one activated carbon-to-carbon olefinic double bond and at least one carboxyl group, in an amount of more than 15% by weight based upon the weight of the interpolymer, and at least one steric stabilizer surfactant having at least one hydrophilic moiety and at least one hydrophobic moiety and a linear block or a random comb configuration, or mixtures thereof, made by polymerizing olefinically unsaturated carboxylic acid monomers in an organic media, in the presence of free a radical forming catalyst, and the steric stabilizer.
Claims22
An interpolymer of
- (1) at least one olefinically unsaturated carboxylic acid or anhydride containing at least one activated carbon-to-carbon olefinic double bond and at least one carboxyl group, in an amount of more than 15% by weight based upon the weight of the interpolymer, and
- (2) at least one steric stabilizer having at least one hydrophilic moiety and at least one hydrophobic moiety, selected from the group consisting of linear block copolymeric steric stabilizers, having a hydrophobic moiety having a length of more than 50 Angstroms, random copolymeric comb steric stabilizers, and mixtures thereof.
Dependencies are inferred from the claim text.