(19)
(11) EP 4 771 068 A1

(12)

(43) Date of publication:
08.07.2026 Bulletin 2026/28

(21) Application number: 24769462.3

(22) Date of filing: 28.08.2024
(51) International Patent Classification (IPC): 
C08F 218/14(2006.01)
C08F 218/00(2006.01)
 C08F 218/18(2006.01)
G02B 1/04(2006.01)
(52) Cooperative Patent Classification (CPC):
G02B 1/041; C08F 218/24; C08F 218/14; C08F 218/18; B29C 39/006
 
C-Sets:
G02B 1/041, C08L 69/00;
(86) International application number:
PCT/JP2024/030585
(87) International publication number:
WO 2025/047768 (06.03.2025 Gazette 2025/10)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 29.08.2023 IT 202300017712

(71) Applicant: Mitsui Chemicals, Inc.
Tokyo 104-0028 (JP)

(72) Inventors:
  • VECCHIONE, Andrea
    48123 Ravenna (IT)
  • FORESTIERI, Roberto
    48123 Ravenna (IT)
  • MARIANI, Francesco
    48123 Ravenna (IT)

(74) Representative: Mewburn Ellis LLP 
Aurora Building Counterslip
Bristol BS1 6BX
Bristol BS1 6BX (GB)

   


(54) METHOD FOR PREPARING A POLYALLYL-FUNCTIONAL PREPOLYMER COMPOSITION, AND METHOD FOR MANUFACTURING AN OPTICAL ARTICLE WHEREIN SAID PREPOLYMER COMPOSITION IS USED