Neil John Simpson;Sharon Todd;Paul Hugh Findlay;Brodyck James Lachian Royles;Roselyne Marie Andree Baudry;Steven Paul Rannard
发明人:
Paul Hugh Findlay,Brodyck James Lachian Royles,Roselyne Marie Andree Baudry,Neil John Simpson,Sharon Todd,Steven Paul Rannard
申请号:
US13379992
公开号:
US20120095111A1
申请日:
2010.06.22
申请国别(地区):
US
年份:
2012
代理人:
摘要:
The present invention relates to the use of a branched addition copolymer as a dispersant in a gaseous, liquid or solid formulation in a range of applications and branched addition copolymers suitable for same wherein the copolymer is obtainable by an addition polymerisation process, wherein said copolymer comprises: at least two chains which are covalently linked by a bridge other than at their ends; and wherein the at least two chains comprise at least one ethyleneically monounsaturated monomer, and wherein the bridge comprises at least one ethyleneically polyunsaturated monomer; and wherein the polymer comprises a residue of a chain transfer agent and wherein the mole ratio of polyunsaturated monomer(s) to monounsaturated monomer(s) is in a range of from 1:100 to 1:4; and wherein the branched copolymer dispersant contains anchoring, solubilising or stabilising moieties and wherein the resulting copolymer comprises at least 10% styrenic monomer, brancher or chain transfer agent.