Method of producing moisture-permeable artificial leather

Details Method of producing moisture-permeable artificial leather Method of producing moisture-permeable artificial leather

1983-06-09

1984-12-11

Wityshyn, Michael

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156155, 156231, 156249, 1563317, 428904, 4283179, B32B 518, B32B 3100, B44C 300, C09J 100

Patent

active

044876424

ABSTRACT:
This invention relates to a method of producing a moisture-permeable artificial leather comprising transferring a water-soluble inorganic salt-containing polyurethane layer onto a base fabric and washing the polyurethane layer with water to extract out said water-soluble inorganic salt. A feature of the invention is that the inorganic salt used has a particle diameter range such that at least 90% thereof is not larger than 30 microns.

REFERENCES:
patent: 3496042 (1970-02-01), Wyness
patent: 3619315 (1971-11-01), Carrach et al.
patent: 3650880 (1972-03-01), Tieniber
patent: 3716502 (1973-02-01), Loew
patent: 3770537 (1973-11-01), Elton
patent: 3912840 (1975-10-01), Edberg
patent: 3968292 (1976-07-01), Pearman et al.
patent: 4116741 (1978-09-01), Thoma et al.
patent: 4171391 (1979-10-01), Parker
patent: 4308184 (1981-12-01), Thoma et al.

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