Holographic storage medium comprising polyfunctional epoxy...

Radiation imagery chemistry: process – composition – or product th – Holographic process – composition – or product – Composition or product or process of making the same

Reexamination Certificate

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C556S431000, C556S434000, C556S450000, C556S478000, C556S479000, C528S027000, C528S031000, C528S037000, C359S003000

Reexamination Certificate

active

07070886

ABSTRACT:
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.

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