Patent ID: 9382399
Filing Date: 2016-07-05
CPC Classification: B29C,B32B,C08G,C08J,Y10T

Claim Text:
1. A method for preparing a foam composition for use in fabric laminated foam articles comprising the steps of: adding at least one polyol; adding at least one isocyanate; and adding a catalyst composition, wherein the catalyst composition comprises a first catalyst composition and a second catalyst composition, the first catalyst composition being capable of accelerating a reaction between the at least one polyol and the at least one isocyanate, and the second catalyst composition being capable of initiating a reaction between the at least one polyol and the at least one isocyanate at a rate slower than the first catalyst composition, wherein the first catalyst composition comprises a first gelling catalyst and a first blowing catalyst and the second catalyst composition comprises a delayed action gelling catalyst and a delayed action blowing catalyst, and wherein the weight ratio of the first gelling catalyst to the delayed action gelling catalyst is in the range 0.1:1 to 15:1, the weight ratio of the first blowing catalyst to the delayed action blowing catalyst is in the range 0.5:1 to 15:1, the weight ratio of the first gelling catalyst to the first blowing catalyst is in the range 2:1 to 25:1, and the weight ratio of the delayed action gelling catalyst to the delayed action blowing catalyst is in the range 0.2:1 to 5:1; with the proviso that the first gelling catalyst is not a delayed action gelling catalyst and the first blowing catalyst is not a delayed action blowing catalyst.