(19)
(11) EP 0 418 228 A1

(12)

(43) Date of publication:
27.03.1991 Bulletin 1991/13

(21) Application number: 88905289.0

(22) Date of filing: 31.05.1988
(51) International Patent Classification (IPC): 
C08F 16/ 00( . )
C08F 16/ 14( . )
C08F 214/ 26( . )
C08F 234/ 02( . )
H05K 3/ 28( . )
C08F 14/ 00( . )
C08F 16/ 16( . )
C08F 216/ 16( . )
H05K 1/ 03( . )
(86) International application number:
PCT/US1988/001702
(87) International publication number:
WO 1989/012071 (14.12.1989 Gazette 1989/29)
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI NL SE

(60) Divisional application:
94203365.5 / 0645406

(71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Wilmington Delaware 19898 (US)

(72) Inventor:
  • SQUIRE, Edward, N.
    Glen Mills, PA 19342 (US)

(74) Representative: Jones, Alan John, et al 
CARPMAELS & RANSFORD 43 Bloomsbury Square
London, WC1A 2RA
London, WC1A 2RA (GB)

   


(54) AMORPHOUS COPOLYMERS OR PERFLUORO-2,2-DIMETHYL-1,3-DIOXOLE