The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2007
Filed:
Sep. 15, 2003
Dirk Achten, Köln, DE;
Michael Klimpel, Pulheim-Stommeln, DE;
Emilie Barriau, Mainz, DE;
Lothar Reif, Dormagen, DE;
Renke Mottweiler, Leverkusen, DE;
Heinrich Berg, Pulheim, DE;
Zsolt Szentivanyi, Leverkusen, DE;
Stefan Glander, Sarnia, CA;
Dirk Achten, Köln, DE;
Michael Klimpel, Pulheim-Stommeln, DE;
Emilie Barriau, Mainz, DE;
Lothar Reif, Dormagen, DE;
Renke Mottweiler, Leverkusen, DE;
Heinrich Berg, Pulheim, DE;
Zsolt Szentivanyi, Leverkusen, DE;
Stefan Glander, Sarnia, CA;
Bayer Aktiengesellschaft, Leverkusen, DE;
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.