Cross-linkers for cross-linkable optical polycarbonates

Details Cross-linkers for cross-linkable optical polycarbonates Cross-linkers for cross-linkable optical polycarbonates

C - Chemistry, Metallurgy

07

D

C07D 207/44 (2006.01) C07D 207/452 (2006.01) C08G 64/16 (2006.01) G02B 1/04 (2006.01) G02F 1/35 (2006.01)

Patent

CA 2269583

The invention pertains to a cross-linker of formula (I) where n is 0 or 1; m is 0 or 1, R is (a) or (b), and R1 is independently OH or -CO- O(hydroxyphenyl), with the proviso that 3,4-dihydroxyphenylmaleimide is excluded. The invention further pertains to cross-linked optical polycarbonate and optical articles obtainable by cross-linking a polycarbonate with this cross-linker or with 3,4-dihydroxyphenylmaleimide.

On décrit un agent de réticulation de formule (I) dans laquelle n représente 0 ou 1; m représente 0 ou 1; R représente (a) ou (b) et R1 représente indépendamment OH ou -CO-O(hydroxyphényle) à condition que soit exclu le 3,4-dihydroxyphénylmaléimide. Cette invention concerne des polycarbonates optiques réticulés et des articles d'optique pouvant être produis par réticulation d'un polycarbonate avec cet agent de réticulation ou avec du 3,4-dihydroxyphénylmaléimide.

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