Patent · US Expired

Acrylonitrile polymerization in fluorinated hydrocarbons

US4255546A · kind A · utility

11Cited by

1References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Sep 20, 1979
Grant date	Mar 10, 1981
Priority date	—
Expiry date	Sep 20, 1999

Classification

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

Abstract

The invention relates to a process for the production of polyacrylonitrile or acrylonitrile copolymers, the polymerization being carried out at a temperature of from -40.degree. to +60.degree. C. optionally under pressure in an aliphatic chlorofluorine or fluorine substituted hydrocarbon containing up to 8 carbon atoms and having a boiling point of from -60.degree. to +50.degree. C. or in mixtures thereof having boiling ranges of from -60.degree. to +50.degree. C. and using a starter system comprising a hydroperoxide sulphur dioxide and an acid. The system may also contain aliphatic hydrocarbons in such quantities that a non-inflammable mixture is formed.

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