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<2>/24 hours according to ASTM E96-66 (Procedure BW).
申请公布号
DE3875711(T2)
申请公布日期
1993.04.08
申请号
DE19883875711T
申请日期
1988.12.23
申请人
E.I. DU PONT DE NEMOURS AND CO., WILMINGTON, DEL., US
发明人
HOESCHELE, GUENTHER KURT, WILMINGTON DELAWARE 19810, US;OSTAPCHENKO, GEORGE JOSEPH, WILMINGTON DELAWARE 19803, US