Process for the preparation of imitation leather from natural he

Details Process for the preparation of imitation leather from natural he Process for the preparation of imitation leather from natural he

1989-06-23

1991-03-19

Simmons, David A.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With formation of web or article

162 9, 162 10, 162 98, 162148, 162 90, 162 81, 264115, 264128, D21C 700, D21C 900

Patent

active

050008226

ABSTRACT:
An imitation leather product and a process for the preparation of the imitation leather product from natural hemp which comprises the steps of (a) firstly digesting natural hemp fiber with weak alkali solution, (b) secondly digesting with ammonia gas, (c) presoak treating either with methylol urea and ammonium phosphate, or sodium chromate and sulfuric acid, and immediately adding ammonia thereto, respectively, (d) beating with SBR resin and cyclohexylcarboxyl diphenylamino thiazolyl sulfonamide, (e) jetting through a multiple stage fiber jetting device, and soaking in a soaking bath container containing methylphenol and SBR resin.

REFERENCES:
patent: 1944907 (1934-01-01), McCormic et al.
patent: 2029310 (1936-02-01), Drewsen
patent: 2060253 (1936-11-01), Shopneck
patent: 2237235 (1941-04-01), Lynam
patent: 2530244 (1950-11-01), Jensen
patent: 2615883 (1952-10-01), Sweeney et al.
patent: 2651571 (1953-09-01), Van Dyk
patent: 2676885 (1954-04-01), Hamburg
patent: 4036679 (1977-07-01), Back et al.
patent: 4045279 (1977-08-01), Nagano et al.

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