A process for the production of open-cell, cold-formable...

Details A process for the production of open-cell, cold-formable... A process for the production of open-cell, cold-formable...

C - Chemistry, Metallurgy

08

G

403/44, 154/80,

C08G 18/70 (2006.01) B29C 44/32 (2006.01) B32B 5/24 (2006.01) B32B 17/10 (2006.01) B60R 13/02 (2006.01) C08G 18/18 (2006.01) C08G 18/40 (2006.01) C08G 18/66 (2006.01) C08G 18/76 (2006.01)

Patent

CA 2032737

Open-celled, cold-formable polyurethane foams are made by reacting a specific crude MDI with a polyol component which includes hydroxyl polyethers having an OH number of from about 28 to about 600, a difunctional phthalic acid hydroxyl polyester having an OH number of from about 150 to about 440, glycerol, a blowing agent (water is preferred), a tertiary amine catalyst and optionally a silicone. foam stabilizer. These foams generally have a density of from about 23 to about 30 kg/m3 and may be molded into articles having intricate shapes (e.g., roofs for automobiles) using known-cold-forming techniques.

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