Process for preparing elastomeric polyurethane or...

Details Process for preparing elastomeric polyurethane or... Process for preparing elastomeric polyurethane or...

C - Chemistry, Metallurgy

08

G

402/151, 402/168

C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01)

Patent

CA 2019060

A process is disclosed for preparing a polyurethane or polyurea elastomer by reacting in a closed mold a reaction mixture comprising a polyisocyanate and a relatively high equivalent weight polyether. The process is characterized by employing as said polyether a polymer or copolymer of propylene oxide having at least two hydroxyl groups per molecule, an equivalent weight from 1000 to 5000 and a monofunctional species content of about 0.04 milliequivalents/gram of polymer or less.

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