Linear polyurethane elastomers, and a process for the preparatio

Details Linear polyurethane elastomers, and a process for the preparatio Linear polyurethane elastomers, and a process for the preparatio

1987-08-07

1988-12-13

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 63, 528 64, 528 66, 528 70, 528 75, 528 77, 528 83, 528 84, 528 85, 2643281, 2643286, 2643288, 524783, C08G 1830

Patent

active

047911875

ABSTRACT:
The invention relates to essentially linear polyurethane elastomers, having improved properties, made from polyester or polyether diols, diisocyanates and chain extenders, the latter having liquid-crystalline properties; and also films and, in particular, fibres which are prepared on the basis of such liquid-crystalline polyurethane components and are shaped thermoplastically (via melting) or from solutions (by solution spinning processes). The invention furthermore relates to an appropriate process for the preparation of the polyurethane elastomers, particularly of PU elastomer fibres (Elasthan and Spandex fibres).

REFERENCES:
patent: 4636531 (1987-01-01), Schmidt et al.

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