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US 7,115,255 B2Granted
Polymer comprising water-soluble units and LCST units, and aqueous composition comprising same
AssigneeL'oreal
InventorFlorence L'Alloret
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Abstract
The invention concerns a polymer comprising water soluble units and LCST units consisting of ethylene oxide and propylene oxide random copolymers, or one of its salts. The invention also concerns an aqueous composition in particular thickened, even gelled, comprising such a polymer or one of its salts and an aqueous phase.
Claims28
A polymer comprising bonded units of
- (1) one or more water-soluble units having at least two reactive sites and
- (2) one or more LCST units having a lower critical solution temperature and at least one reactive site capable of reacting with the reactive sites of the water-soluble unit to form a covalent bond,
- wherein said LCST units comprise random copolymers of ethylene oxide and propylene oxide, having an ethylene oxide number of from 1 and greater to 40 and less and a propylene oxide number of from 15 and greater to 60 and lower,
- and salts thereof,
- wherein the one or more water-soluble units are selected from the group consisting of a water-soluble polyurethane having at least two reactive sites, xanthan gum, an alginate, a derivative of an alginate, cellulose, a derivative of cellulose, a galactomannan, a derivative of a galactomannan, and polyethyleneimine.
2 more elements
Dependencies are inferred from the claim text.