Patent · US Expired

Block copolymers of conjugated dienes or vinyl substituted aromatic hydrocarbons and acrylic esters and process for their manufacture

US4461874A · kind A · utility

12Cited by

6References

12Claims

0Family size

Assignee

Cosden Technology, Inc. · US

Inventors

Philippe Teyssie · Flémalle, BE
Robert Jerome · Tilff, BE
Trazollah Ouhadi · Oderberg, DE
Roger Fayt · Neupré, BE

Key dates

Filing date	Oct 1, 1982
Grant date	Jul 24, 1984
Priority date	—
Expiry date	Oct 1, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F297/026
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Block copolymers having a first sequence formed with a conjugated diene or a vinyl substituted aromatic hydrocarbon other than alpha-methylstyrene, a second sequence formed with an acrylic ester, and a linking intermediate sequence formed with alpha-methylstyrene. An anionic polymerization process is used to form these block copolymers.

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