Preparation of polyurethane foams without using inert...

Details Preparation of polyurethane foams without using inert... Preparation of polyurethane foams without using inert...

C - Chemistry, Metallurgy

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C08G 18/06 (2006.01) C08G 18/28 (2006.01) C08G 18/48 (2006.01) C08G 18/63 (2006.01) C08G 18/66 (2006.01) C08J 9/12 (2006.01) C08L 75/08 (2006.01)

Patent

CA 2020081

A process for making low density and optionally low resilience, soft, flexible polyurethane slabstock foam having a substantially open cell structure without crushing, without requiring auxiliary inert blowing agents, by reacting under a condition which permits the foam to rise freely, a conventional hydroxyl-containing polyether polyol with a polyisocyanate at an isocyanate index of between about 60 and 95 in the presence of a foam processing aid comprising a low equiva- lent weight crosslinking agent and/or extending agent and, as needed, a cell opening agent.

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