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(11)

EP 0 614 415 A1

(12)

(43) Date of publication: 14.09.1994 Bulletin 1994/37 (21) Application number: 93900666.0 (22) Date of filing: 25.11.1992

(51) International Patent Classification (IPC):  B29C 53/ 28( . ) B31F 1/ 30( . ) B31D 3/ 02( . ) (86) International application number: PCT/US1992/010191 (87) International publication number: WO 1993/010970 (10.06.1993 Gazette 1993/14)

(84) Designated Contracting States: BE DE FR GB IT LU (30) Priority: 25.11.1991 US 19910797324 25.11.1991 US 19910797325 25.11.1991 US 19910797326 25.11.1991 US 19910797327 25.11.1991 US 19910797328 25.11.1991 US 19910797329 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)

(72) Inventors: ARNOLD, Paul, James Bear, DE 19701 (US) BROWN, Robert, Lee Wilmington, DE 19808 (US) SANTUCCI, Robert, Joseph West Chester, PA 19380 (US) KIRAYOGLU, Birol Wilmington, DE 19803 (US) SASSANO, Elizabeth, Mary West Chester, PA 19380 (US) SHRENK, Donald, Murray Hockessin, DE 19707 (US) WHITLEY, Jeffrey, Franklin Chattanooga, TN 37421 (US) DUFFY, Joseph, James Newark, DE 19702 (US) LIN, Pui-Yan Hockessin, DE 19707 (US) MARIN, Robert, Anthony Hockessin, DE 19707 (US) (74) Representative: von Kreisler, Alek, Dipl.-Chem., et al  Patentanwälte, von Kreisler-Selting-Werner, Bahnhofsvorplatz 1 (Deichmannhaus) D-50667 Köln D-50667 Köln (DE)