Vapor permeable poly(etherimide) ester elastomer films

Details Vapor permeable poly(etherimide) ester elastomer films Vapor permeable poly(etherimide) ester elastomer films

1987-12-28

1989-09-19

Anderson, Harold D.

Stock material or miscellaneous articles

Composite

Of polyamidoester

4284735, 428480, 528289, 528322, B32B 2700, C08G 6944, C08G 7310

Patent

active

048680621

ABSTRACT:
A flexible breathable waterproof product of a film of a thermoplastic hydrophilic poly(etherimide) ester elastomer which is the reaction product of one or more diols, one or more dicarboxylic acids, and one or more poly(oxyalkylene imide) diacids said poly(oxyalkylene imide) diacid containing sufficient repeating units of ethylene oxide so that the resulting poly(etherimide) ester elastomer has about 25-60 weight percent ethylene oxide units and said film has a water vapor transmission rate of at least about 3500 gm mil/m.sup.2 /24 hours according to ASTM E96-66 (Procedure BW).

REFERENCES:
patent: 4493870 (1985-01-01), Vrouenraets et al.
patent: 4556688 (1985-12-01), McCready et al.
patent: 4556705 (1985-12-01), McCready
patent: 4636442 (1987-01-01), Beavers et al.
patent: 4714754 (1987-12-01), McCready et al.
patent: 4725481 (1988-02-01), Ostapchenko

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