(19)
(11) EP 1 119 572 A1

(12)

(43) Date of publication:
01.08.2001 Bulletin 2001/31

(21) Application number: 99950636.3

(22) Date of filing: 07.10.1999
(51) International Patent Classification (IPC)7C07F 7/21, G03C 1/685
(86) International application number:
PCT/EP9907/446
(87) International publication number:
WO 0021/968 (20.04.2000 Gazette 2000/16)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 09.10.1998 IT MI982175

(71) Applicant: Great Lakes Chemical (Europe) GmbH
8500 Frauenfeld (CH)

(72) Inventors:
  • MALATESTA, Vincenzo
    I-20090 San Maurizio al Lambro (IT)
  • SALEMI-DELVAUX, Christiane
    F-13008 Marseille (FR)
  • DENIEL, Marie-Hélène
    F-47140 Penne d'Agenais (FR)

(74) Representative: De Gregori, Antonella et al
Ing. Barzano & Zanardo Milano S.p.A.Via Borgonuovo 10
20121 Milano
20121 Milano (IT)

   


(54) PHOTOCHROMATIC COMPOUNDS, PREPARATION, USE IN POLYMERIC MATERIALS