Composition that can form a gel comprising a copolymer, and useful copolymers
First Claim
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1. A star copolymer comprising a core and, at the periphery of the core, macromolecular branches each comprising:
- an intermediate block A linked to the core or at least partly included in the core; and
a peripheral block B linked to the block A;
wherein the weight ratio between block A and block B being greater than or equal to 40/60;
the blocks A and B being such that;
block A is hydrophilic and block B is hydrophobic;
orblock A is hydrophilic and block B is hydrophilic, cationic or potentially cationicwherein the core is a chemically-crosslinked polymeric organic core.
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Abstract
The invention relates to a composition that can form a gel comprising a copolymer. Said composition is an aqueous composition, and the copolymer is a star copolymer. The invention also relates to useful copolymers, especially for the inventive compositions.
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Citations
24 Claims
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1. A star copolymer comprising a core and, at the periphery of the core, macromolecular branches each comprising:
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an intermediate block A linked to the core or at least partly included in the core; and a peripheral block B linked to the block A;
wherein the weight ratio between block A and block B being greater than or equal to 40/60;the blocks A and B being such that; block A is hydrophilic and block B is hydrophobic;
orblock A is hydrophilic and block B is hydrophilic, cationic or potentially cationic wherein the core is a chemically-crosslinked polymeric organic core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification