Method of production of a sheet material having a superior durab

Details Method of production of a sheet material having a superior durab Method of production of a sheet material having a superior durab

1976-03-12

1978-05-09

Ivy, C. Warren

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25BE, 264 41, C08J 928

Patent

active

040886166

ABSTRACT:
In accordance with the present invention, it has now been found that the coagulation property of polyurethane elastomers can be considerably improved without spoiling any desirable chemical property of the original elastomer, if polyurethane elastomers which are different only in N%, are mixed together in a specified range of mixing ratio or if a polyurethane elastomer is synthesized using a mixture of polymer glycols whose structural units are chemically the same, however, whose molecular weights are different from each other in a specified range, and a solution of the obtained elastomer is coagulated by a specified wet coagulation condition.

REFERENCES:
patent: 3595732 (1971-07-01), Tingerthal

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