Patent ID: 6353077
Filing Date: 2002-03-05
Classification: A61L,C08G

Abstract:
A resin system comprising at least a water curable, isocyanate functionalised prepolymer and a first and a second catalyst component wherein the first catalyst comprises a tertiary amine catalyst chemically bound-in to the prepolymer, the bound-in tertiary amine catalyst being selected from the group consisting of:1-(2-hydroxyethyl) pyrrolidine, 1-methyl piperazine, 1-methyl-2-piperidine methanol, 1,4-bis(2-hydroxyethyl) piperazine 2[2-(dimethylamino)ethyl]methyl amino ethanol, gramine, 3-morpholino-1,2-propanediol, 1,4-bis(3-aminopropyl)piperazine, tropine, 3-aminopropyl morpholine, 4,2-hydroxyethyl morpholine, 3,3-diamino-N-methyl dipropylamine, 1,4-bis(2-hydroxypropyl)-2-methyl piperazine, 1-(2-hydroxypropyl)imidazole, 3-dimethyl amino propanol and &bgr;-hydroxy-4-morpholine propane sulphonic acid, and the second catalyst is not chemically bound-in and is water soluble but insoluble in the prepolymer.