(19)

(11)

EP 0 513 331 A1

(12)

(43) Date of publication: 19.11.1992 Bulletin 1992/47 (21) Application number: 92901814.0 (22) Date of filing: 27.11.1991

(51) International Patent Classification (IPC):  B01J 23/ 46( . ) C07C 67/ 10( . ) C07C 69/ 54( . ) C07B 61/ 00( . ) C07C 67/ 54( . ) C07C 69/ 56( . ) (86) International application number: PCT/US1991/008757 (87) International publication number: WO 1992/009554 (11.06.1992 Gazette 1992/13)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 30.11.1990 US 19900621238 (71) Applicant: UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION Danbury, Connecticut 06817-0001 (US)	(72) Inventors: MOKHTARZADETH, Morteza Charleston, WV 25314 (US) MURRAY, Rex, Eugene Charleston, WV 25313 (US) (74) Representative: von Hellfeld, Axel, Dr. Dipl.-Phys.  Wuesthoff & Wuesthoff Patent- und Rechtsanwälte Schweigerstrasse 2 D-81541 München D-81541 München (DE)