Patent · US Expired

Acrylonitrile polymerization with organic solvent

US4326051A · kind A · utility

7Cited by

9References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Carlhans Suling · Odenthal, DE
Siegfried Korte · Odenthal, DE
Theo Neukam · Dormagen, DE

Key dates

Filing date	Jul 21, 1980
Grant date	Apr 20, 1982
Priority date	—
Expiry date	Jul 21, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a homopolymer or copolymer of acrylonitrile which comprises from 0 to 30% by weight, incorporated by polymerization, of comonomer units which are free from ionic groups, said polymers having a K-value of from 50 to 100, a dye absorption capacity for cationic dyes of at least 0.5% by weight, a conductivity, measured in dimethylformamide solution, of at least 10.mu. Siemens, and from 0.2 to 1.5% by weight of sulphur fixed to said polymer as well as to a process for the production thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.