Synthetic leather product and method of production

Details Synthetic leather product and method of production Synthetic leather product and method of production

1973-08-06

1976-08-10

Husack, Ralph

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427289, 427336, 427412, 428286, 428288, 428425, 428904, D06N 314, B05D 138

Patent

active

039743209

ABSTRACT:
A synthetic leather consisting essentially of three adherent microporous polyurethane layers, including a first base layer of a polyurethane impregnated fibrous fleece or web, a second or intermediate polyurethane layer containing 3-30% by weight of very finely divided insoluble solid particles with an individual volume is less than 2.times.10.sup..sup.-2 mm..sup.3 and with a maximum length generally below about 0.3 mm., preferably less than 0.1 mm., and a third or cover polyurethane layer which can be finished in a conventional manner. The product is especially distinguished by a smooth and uniform surface resistant to the "orange peel" effect. The method is distinguished by the application of the intermediate layer before the base layer is completely coagulated or solidified in the formation of the microporous structure.

REFERENCES:
patent: 3238055 (1966-03-01), Brightwell
patent: 3496001 (1970-02-01), Minobe et al.
patent: 3503784 (1970-03-01), Morita et al.
patent: 3555129 (1971-01-01), Fukada et al.
patent: 3745041 (1973-07-01), Raymond
patent: 3832214 (1974-08-01), Wang
patent: 3841897 (1974-10-01), Okazaki et al.

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