US 11,939,434 B2
Polymeric dispersants from phenyl glycidyl ether
Timothy A. Boebel, Wilmette, IL (US); Xue Min Dong, Lincolnshire, IL (US); E. Carolina Rojas, Highland Park, IL (US); Renee Luka, Park Ridge, IL (US); Gary Luebke, Chicago, IL (US); and Paul W. Knox, Kenosha, WI (US)
Assigned to STEPAN COMPANY, Northfield, IL (US)
Filed by STEPAN COMPANY, Northfield, IL (US)
Filed on Mar. 31, 2020, as Appl. No. 16/836,544.
Application 16/836,544 is a continuation of application No. PCT/US2018/054934, filed on Oct. 9, 2018.
Claims priority of provisional application 62/684,329, filed on Jun. 13, 2018.
Claims priority of provisional application 62/570,275, filed on Oct. 10, 2017.
Prior Publication US 2020/0223988 A1, Jul. 16, 2020
Int. Cl. C08J 3/09 (2006.01); A01N 25/04 (2006.01); A01N 25/14 (2006.01); A01N 37/34 (2006.01); A01N 43/50 (2006.01); A01N 43/653 (2006.01); A01N 43/70 (2006.01); C08G 65/26 (2006.01); C08L 71/02 (2006.01); C09D 5/02 (2006.01)
CPC C08J 3/095 (2013.01) [A01N 25/04 (2013.01); A01N 25/14 (2013.01); A01N 37/34 (2013.01); A01N 43/50 (2013.01); A01N 43/653 (2013.01); A01N 43/70 (2013.01); C08G 65/2609 (2013.01); C08G 65/2612 (2013.01); C08G 65/2624 (2013.01); C08G 65/2627 (2013.01); C08G 65/263 (2013.01); C08G 65/2636 (2013.01); C08L 71/02 (2013.01); C09D 5/022 (2013.01); C09D 5/027 (2013.01); C08J 2371/02 (2013.01); C08J 2421/02 (2013.01); C08L 2201/54 (2013.01)] 4 Claims
 
1. A copolymer comprising a reaction product of:
(a) a polyhydroxyl nucleophilic initiator selected from the group consisting of alcohols, phenols, and deprotonated species thereof, the initiator containing from 2 to 6 nucleophilic moieties;
(b) from 1 to 30 recurring units per active hydrogen equivalent of the initiator of a phenyl glycidyl ether; and
(c) from 1 to 100 recurring units per active hydrogen equivalent of the initiator of one or more alkylene oxides (AO) selected from the group consisting of ethylene oxide, propylene oxide, butylene oxides, and combinations thereof;
wherein the copolymer comprises 20 to 60 wt. % of the phenyl glycidyl ether recurring units based on the combined amounts of the phenyl glycidyl ether and AO recurring units, and the copolymer comprises branches wherein a branch is defined as a segment of the copolymer composed of a block of phenyl glycidyl ether followed by a block of AO units, the number of branches being an integer and uniformly equal to the number of nucleophilic moieties; and
wherein the copolymer has a number-average molecular weight within the range of 1,900 to 56,000 g/mol.