(19)
(11) EP 0 350 498 A1

(12)

(43) Date of publication:
17.01.1990 Bulletin 1990/03

(21) Application number: 88908099.0

(22) Date of filing: 23.12.1987
(51) International Patent Classification (IPC): 
G03F 7/ 023( . )
(86) International application number:
PCT/US1987/003431
(87) International publication number:
WO 1989/005996 (29.06.1989 Gazette 1989/14)
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(71) Applicant: HOECHST CELANESE CORPORATION
Short Hills, NJ 07078 (US)

(72) Inventors:
  • BRAHIM, Karime
    Langhorne, PA 19047 (US)
  • McFARLAND, Michael, James
    Middlesex, NJ 08846 (US)

(74) Representative: Fleck, Thomas, Dr., et al 
Raffay & Fleck Patentanwälte Postfach 32 32 17
D-20117 Hamburg
D-20117 Hamburg (DE)

   


(54) A PHOTORESIST COMPOSITION INCLUDING A COPOLYMER FROM MALEIMIDE AND A VINYL-ETHER OR -ESTER