Patent · US Expired

Dithiocarbamic esters

US7169937B2 · kind B2 · utility

3Cited by

7References

2Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Dirk Achten
Michael Klimpel · Langenfeld, DE
Emilie Barriau · Laguna Niguel, US
Lothar Reif · Dormagen, DE
Renke Mottweiler · Leverkusen, DE
Heinrich Berg · Pulheim, DE
Zsolt Szentivanyi · Leverkusen, DE
Stefan Glander · Sarnia, CA

Key dates

Filing date	Sep 15, 2003
Grant date	Jan 30, 2007
Priority date	—
Expiry date	Aug 24, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F36/18
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to dithiocarbamic esters, their preparation and their use for regulating the degree of polymerization during the polymerization of monomers, such as during the polymerization of chloroprene to give polychloroprene, and during the polymerization of 2,3-dichlorobutadiene to give poly-2,3-dichlorobutadiene, and during the copolymerization of chloroprene with 2,3-dichlorobutadiene. The present invention further relates to polymers which are obtainable via the polymerization of monomers in the presence of the dithiocarbamic esters of the invention. The present invention also relates to polymers which contain end groups derived from the dithiocarbamic esters of the present invention.

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