Holographic storage medium comprising polyfunctional epoxy...

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 77/04 (2006.01) C08G 77/14 (2006.01) C08G 77/48 (2006.01) C08G 77/50 (2006.01) G03F 7/00 (2006.01) G03F 7/075 (2006.01)

Patent

CA 2424366

Disclosed is a holographic recording medium. The novel holographic recording mediums disclosed herein comprises: a) at least one polyfunctional epoxide monomer or oligomer which undergoes acid initiated cationic polymerization. Each epoxide in the monomer or oligomer is linked by group comprising a siloxane to a silicon atom and each monomer or oligomer has an epoxy equivalent weight of greater than about 300 grams/mole epoxide; b) a binder which is capable of supporting cationic polymerization; c) an acid generator capable of producing an acid upon exposure to actinic radiation; and optionally d) a sensitizer.

L'invention concerne un support d'enregistrement holographique. Ces nouveaux supports d'enregistrement holographiques comportent : a) au moins un monomère ou oligomère d'époxyde polyfonctionnel qui subit une polymérisation cationique initiée par un acide. Chaque époxyde du monomère ou de l'oligomère est lié par un groupe contenant un siloxane à un atome de silicium, et chaque monomère ou oligomère comporte un poids équivalent d'époxy supérieur à environ 300 g/mole d'époxyde ; b) un liant capable de supporter une polymérisation cationique ; c) un générateur d'acide capable de produire un acide lorsqu'il est exposé à un rayonnement actinique ; et éventuellement d) un sensibilisateur.

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