Moisture permeable film for lamination to a textile material

Details Moisture permeable film for lamination to a textile material Moisture permeable film for lamination to a textile material

1988-11-21

1989-07-11

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

4283155, 4283159, 4283171, B32B 518, B32B 526

Patent

active

048471429

ABSTRACT:
This invention is a water-resistant film for lamination to a textile material, and the flexible, laminated product produced therewith. The film has a permeability of at least 0.0008 metric perm-cm. at 20.degree. C. and 65 percent relative humidity and of at least 0.0006 metric perm-cm. at 30.degree. C. and 50 percent relative humidity. The film is formed from a block copolymer having a number average molecular weight of from about 15,000 to about 35,000. The block copolymer contains polymer segments prepared by the amination of a polyether formed by treating a polyethylene glycol with an alkylene oxide of three or more carbon atoms. The product is a laminant of a layer of the described film and a layer of a textile material, and is useful in the formation of water-resistant, moisture permeable articles such as garments, tarpaulins, tents, and the like.

REFERENCES:
patent: 3473956 (1969-10-01), McIntyre
patent: 3632666 (1972-01-01), Okayaki et al.
patent: 3639502 (1972-02-01), Okayaki et al.
patent: 3953566 (1976-04-01), Gore
patent: 4194041 (1980-03-01), Gore et al.
patent: 4443511 (1984-04-01), Worden et al.
patent: 4468505 (1984-08-01), Bowen et al.
patent: 4493870 (1985-01-01), Vrouenraets et al.
patent: 4808675 (1989-02-01), Twilley et al.
Loftquist et al., Textile Research Journal, 55 (6), 325-333, (1985).

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