Acrylonitrile polymer, process for the preparation thereof and f

Details Acrylonitrile polymer, process for the preparation thereof and f Acrylonitrile polymer, process for the preparation thereof and f

1982-11-24

1985-04-23

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526287, 526341, 526342, C08F 200

Patent

active

045131260

ABSTRACT:
An acrylonitrile polymer comprising acrylonitrile, at least one of vinyl chloride and vinylidene chloride, a sulfo group-containing vinyl monomer having a higher reactivity ratio than acrylonitrile and a methallyl sulfonic acid monomer, which is prepared by conducting a polymerization in a manner such that at least half amount of the methallyl sulfonic acid monomer to be used is added to the polymerization system in a substantial period of adding the sulfo group-containing vinyl monomer having a higher reactivity ratio than acrylonitrile to the system. The acrylonitrile polymer is suitable for the preparation of a modacrylic synthetic fiber, and the modacrylic fiber prepared therefrom has excellent flame resistance, devitrification preventing property and dyeing affinity.

REFERENCES:
patent: 3310535 (1967-03-01), Mazzolini et al.
patent: 3373147 (1968-03-01), Izumi et al.
patent: 3781248 (1973-12-01), Sakai et al.
patent: 3931120 (1976-01-01), Shichijo et al.
patent: 4007232 (1977-02-01), Yamazaki et al.
patent: 4163089 (1979-07-01), Palethorpe

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