(19)

(11)

EP 0 161 245 A1

(12)

(43) Date of publication: 21.11.1985 Bulletin 1985/47 (21) Application number: 83903870.0 (22) Date of filing: 07.11.1983

(51) International Patent Classification (IPC):  C08K 3/ 22( . ) G01S 7/ 38( . ) H01F 1/ 00( . ) H05K 9/ 00( . ) C08K 3/ 00( . ) H01B 1/ 20( . ) H01Q 17/ 00( . ) (86) International application number: PCT/US1983/001747 (87) International publication number: WO 1985/002265 (23.05.1985 Gazette 1985/12)

(84) Designated Contracting States: CH DE FR GB LI NL SE (71) Applicant: THE DOW CHEMICAL COMPANY Midland Michigan 48640-1967 (US)	(72) Inventors: SOLC, Jitka Midland, MI 48640 (US) HARRIS, Robert, Francis Midland, MI 48640 (US) (74) Representative: Hann, Michael, Dr., et al  Patentanwälte Dr. Michael Hann Dr. H.-G. Sternagel Sander Aue 30 D-51465 Bergisch Gladbach D-51465 Bergisch Gladbach (DE)