Non-crackling, antistatic polyurethane film with high breathabil

Details Non-crackling, antistatic polyurethane film with high breathabil Non-crackling, antistatic polyurethane film with high breathabil

1996-09-23

1999-06-01

Short, Patricia A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

4284231, 524590, 525460, 528 76, B32B 2740

Patent

active

059086904

ABSTRACT:
A waterproof and, at the same time, breathable and antistatic film produced without a support by extrusion, the film having a DIN friction coefficient of less than 0.8 and consisting of thermoplastic polyurethane elastomer resins with a melt flow rate, as measured at 190.degree. C. under a load of 10 kg, of at most 70, the soft segment of the elastomer resins consisting of polyethylene oxide and/or containing ethylene oxide reaction products and the relative percentage by weight of the soft segment in the polyurethane resin being between 35% by weight and 60% by weight, based on the total weight of the polyurethane used.

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patent: 4367237 (1983-01-01), Wakatsuka et al.
patent: 4371684 (1983-02-01), Quiring et al.
patent: 4379904 (1983-04-01), Ehrlich et al.
patent: 4942214 (1990-07-01), Sakhpara
patent: 5047456 (1991-09-01), Onwumere et al.
patent: 5246996 (1993-09-01), McVie et al.
patent: 5397824 (1995-03-01), Mcvie et al.
Derwent Abstract of JP 04-180,913 (1992).

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