Acrylonitrile polymer, process for the preparation thereof and fiber prepared therefrom
US4513126A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1982 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Nov 24, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.