Patent · US Expired

Process for the production of brominated chlorine-substituted poly-1,3-butadiene

US5306740A · kind A · utility

8Cited by

2References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hans-Josef Laas · Odenthal, DE
Heinz-Werner Lucas · Bensberg, DE
Klaus Nachtkamp · Cologne, DE
Heinrich Konigshofen · Bensberg, DE

Key dates

Filing date	Apr 12, 1993
Grant date	Apr 26, 1994
Priority date	—
Expiry date	Apr 12, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Brominated chlorine-substituted poly-1,3-butadiene is produced by a process in which an aqueous chlorine-substituted poly-1,3-butadiene latex is reacted in aqueous phase with a brominating agent in the presence of a radical-forming catalyst and/or in the presence of light at a pH value below 7 and at a temperature of 20.degree. to 95.degree. C., the brominated reaction product is optionally precipitated from the aqueous dispersion obtained and then separated from the aqueous liquid.

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