Textile coating with polyurethanes

Details Textile coating with polyurethanes Textile coating with polyurethanes

1975-01-20

1978-09-26

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156243, 156246, 260 326NR, 427148, 427152, 428 91, 428248, 428424, 428425, 528 85, D06Q 100, B32B 502, B32B 2740

Patent

active

041167414

ABSTRACT:
This application relates to textile sheets which have been coated with polyurethanes and to a process for coating said textile sheets wherein a solution of polyurethane is applied as a top coat to a release substrate and then a bonding coat is applied before application of the textile material. The polyurethane which is used as a top coat is prepared by reacting a dihydroxyl compound with a molecular weight between about 600 and 4000 and a mixture of at least 2 diols with a molecular weight between 62 and 450 with at least one organic diisocyanate. The invention overcomes the difficulty of the top coat being lifted from the release substrate in numerous areas while other areas remain firmly attached giving the so-called "hoar-frost" effect.

REFERENCES:
patent: 3100721 (1963-08-01), Holden
patent: 3248373 (1966-04-01), Barringer
patent: 3496042 (1970-02-01), Wyness
patent: 3650880 (1972-03-01), Tieniber
patent: 3666725 (1972-05-01), Irwin

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