Patent · US Expired

Process for the preparation of epoxidized polybutadienes

US4851556A · kind A · utility

4Cited by

7References

5Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Rainer Siegmeier · Frankfurt am Main, DE
Andreas Grund · Darmstadt, DE
Guenter Prescher · Hanau, DE
Udo Brandt · Hanau, DE

Key dates

Filing date	Mar 2, 1988
Grant date	Jul 25, 1989
Priority date	—
Expiry date	Mar 2, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08C19/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Epoxidized polybutadienes with an average molecular weight of 500 to 100,000 and a certain content of epoxide oxygen were prepared from the corresponding polybutadienes with use of perpropionic acid in a benzene solution. The solution can also be employed in unpurified form with maximum contents of 1.5 weight percent hydrogen peroxide 1.5 weight percent of water, and about 800 ppm of mineral acid.

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