Patent ID: 9592295
Date: 2017-03-14
CPC Classifications: A01N,A61K,A61P,A61Q,C08G,C08J,C08L

Claim:
1. A reversely thermo-reversible hydrogel composition comprising: (a) a water soluble block copolymer having the general formula of HO-(EO) (b) at least one associative gelling adjuvant having a water solubility of less than 0.5 g/100 ml being capable of forming water soluble inter-molecular complexes with said water soluble block copolymers in water; and (c) water, wherein the combined amount of the water soluble block copolymer (a) and the at least one associative gelling adjuvant (b) is 24 wt.% or less of the hydrogel composition, and wherein the hydrogel composition is clear and transparent and has an adjustable sol-gel transition temperature in the range of from about 4-45° C.