Process for producing artificial leather

Details Process for producing artificial leather Process for producing artificial leather

1973-12-18

1976-02-17

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156239, 260 25AH, 260 25AY, 260 775AT, 264 458, 264 464, 264 54, 428 90, 428 91, 428172, 428245, 428425, 428904, B32B 3114, B32B 0520, B32B 0528

Patent

active

039390217

ABSTRACT:
Artificial leather is produced by applying a dope comprising urethane prepolymers containing terminal isocyanate groups, an amine catalyst and a foam stabilizer onto a releasing carrier sheet, exposing the resulting coating layer to a moisture-containing gas under controlled conditions, laminating the coating layer onto a backing material and stripping off the releasing carrier sheet. The resulting artificial leather has a cellular structure of polyurethane microfoam in adhesion with the backing material and an adhesion strength of 100 to 10,000 g/cm of width.

REFERENCES:
patent: 3000757 (1961-09-01), Johnston et al.
patent: 3393106 (1968-07-01), Marrinan et al.
patent: 3537947 (1970-11-01), Brazdzionis
patent: 3547753 (1970-12-01), Sutton
patent: 3639188 (1972-02-01), Vogel
patent: 3650880 (1972-03-01), Tieniber
patent: 3748288 (1973-07-01), Winkler et al.
patent: 3827930 (1974-08-01), Sutton

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