Acrylamide copolymer and preparation method therefor and use thereof
AssigneesChina Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
InventorsFangyuan ZHAO, Zhuo YI, Xiaochun WANG, Jie YANG
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to the technical field of oilfield chemicals, and discloses an acrylamide copolymer, wherein the acrylamide copolymer comprises a structural unit A, a structural unit B and a structural unit C, wherein the structural unit A has a structure shown in Formula (1), the structural unit B has a structure shown in Formula (2), and the structural unit C has a structure shown in Formula (3) and/or Formula (4); wherein R1 is methyl or H, R2 is —OH, —NH2, —COOH or C2-C12 alkyl, n is an integer between 0 and 6, and a, b and c are each independently selected from integers between 0 and 2.
Claims20
An acrylamide copolymer, wherein the acrylamide copolymer comprises a structural unit A, a structural unit B, and a structural unit C, wherein the structural unit A has a structure shown in Formula (1), the structural unit B has a structure shown in Formula (2), and the structural unit C has a structure shown in Formula (3) and/or Formula (4);
- wherein R1 is methyl or H, R2 is —OH, —NH2, —COOH or C2-C12 alkyl, n is an integer in a range of 0-6, and a, b and c are each independently selected from integers in a range of 0-2.
A method for preparing an acrylamide copolymer, comprising:
- (1) subjecting the monomer mixture to a polymerization reaction in water under the conditions of solution polymerization and in the presence of an initiator, so as to obtain a copolymer colloid;
- wherein the monomer mixture comprises (meth)acrylamide, monomer X, and monomer Y, wherein the monomer X has a structure shown in Formula (5), and the monomer Y has a structure shown in Formula (6) and/or Formula (7);
- wherein R2 is —OH, —NH2, —COOH or C2-C12 alkyl, n is an integer in a range of 0-6, and a, b and c are each independently selected from integers in a range of 0-2;
- (2) subjecting the copolymer colloid to a hydrolysis reaction to prepare the acrylamide copolymer.
(canceled)
(canceled)
Dependencies are inferred from the claim text.