Method for producing fire-retarded cellulosic fibers and fire-re

Details Method for producing fire-retarded cellulosic fibers and fire-re Method for producing fire-retarded cellulosic fibers and fire-re

1981-03-20

1983-04-26

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 5423, 52623821, 527311, 527313, 527314, 106165, 106187, 106203, 536 57, 536 84, D01F 802

Patent

active

043813704

ABSTRACT:
A method for producing fire-retarded blend fibers having a fire resistance LOl-value of at least 21% O.sub.2, made from cellulose and chlorine containing polymer. Chlorine containing polymer having a chlorine content of 30-75% by weight, is blended, either as such or dissolved in a solvent, with a DMSO/formaldehyde solution of cellulose so that the obtained blend has 10-70% by weight of chlorine containing polymers, based on the total amount of cellulose and said polymers. Fibers are produced of the obtained mixture by bringing it into contact with an aqueous or alcoholic solution.

REFERENCES:
patent: 2052478 (1936-08-01), Lilienfeld
patent: 2163607 (1939-06-01), Lilienfeld
patent: 3359155 (1967-12-01), Kajitani
patent: 4049747 (1977-09-01), Jin et al.
patent: 4097666 (1978-06-01), Johnson et al.
patent: 4186156 (1980-01-01), Gibbs
patent: 4252766 (1981-02-01), Baldini et al.

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