Waterproof breathable polyurethane membranes and porous substrat

Details Waterproof breathable polyurethane membranes and porous substrat Waterproof breathable polyurethane membranes and porous substrat

1992-07-16

1993-05-04

Foelak, Morton

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

Synthetic resins

From silicon reactant having at least one...

521154, C08G 7704

Patent

active

052083136

ABSTRACT:
Disclosed herein are polyurethane compositions specifically adapted to produce non-porous membranes exhibiting waterproof and water vapor transmissible characteristics. The membranes can be produced as free standing products or can be produced as coatings on porous substrates to confer similar properties to such substrates. Also disclosed are coated fabrics and fabric laminates utilizing the membranous coatings of the invention and exhibiting waterproof and water vapor transmissible characteristics. Such coated fabrics and fabric laminates find utility in the fabrication of tenting, rainwear and other garments where waterproofness, coupled with breathability, are important features.

REFERENCES:
patent: 3953566 (1976-04-01), Gore
patent: 4187390 (1980-02-01), Gore
patent: 4194041 (1980-03-01), Gore et al.
patent: 4532316 (1985-07-01), Henn

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