Flameproofed modacryl copolymers, fibers and filaments containin

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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260 324, 260 793M, 260956, 526225, 526229, 526258, C08F 3003, C08F23002, C08F 2606, C08F 430

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active

040525511

ABSTRACT:
The invention relates to filaments and fibers the filament-forming substance of which is a copolymer of from 35 to 85 weight % of acrylonitrile, from 5 to 45 weight % of vinyl chloride, vinyl bromide and/or vinylidene chloride, from 5 to 30 weight % of carboxyphosphinic acid derivatives of the formula ##STR1## where R.sub.1 is lower alkyl having up to 8 carbon atoms, or CH.sub.2 Cl--, R.sub.2 is lower alkyl having up to 8 carbon atoms in which a hydrogen atom may be substituted by a halogen atom in case of R.sub.1 being CH.sub.2 Cl--, and R.sub.3 is hydrogen or methyl, and from 0 to 15 weight % of other unsaturated compounds having an activated double bond; the weight percentages being relative to the total amount of monomers, and a process for their manufacture. The filaments obtained are self-extinguishing and excel furthermore by their thermostability and their high degree of whiteness.

REFERENCES:
patent: 3243417 (1966-03-01), Kirby
patent: 3766252 (1973-10-01), Schmidt et al.
patent: 3824222 (1974-07-01), Shichijo et al
patent: 3865796 (1975-02-01), Schmidt et al.

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