Holographic storage medium comprising polyfunctional epoxy monomers capable of undergoing cationic polymerization
AssigneeAprilis, Inc.
InventorsErdem A. Cetin, Richard A. Minns, David A. Waldman
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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.
Claims19
A compound represented by the following structural formula:
- wherein:
- each group R7 is an unsubstituted aliphatic group, a substituted aliphatic group, an unsubstituted aryl group, a substituted aryl group;
- each group R8 is R9, hydrogen, an alkenyl, a substituted or unsubstituted C1-12 alkyl, C1-12 cycloalkyl, aryl substituted C1-12-alkyl or aryl or Rz—(O—Y1)m—, (Rz)3Si—(O—Si(Rz)2)q—Y1— or (Rz)3Si—(O—Si(Rz)2)q—O—;
- each R9 is independently represented by the following structural formula:
- wherein:
- X1 and X2 are independently an inert linking group;
- each Ra is independently a substituted or unsubstituted aliphatic group or a substituted or unsubstituted aryl group;
- each Rb is an aliphatic group substituted with an epoxide;
- each Rz is independently a substituted or unsubstituted C1-12 alkyl group, C1-12 cycloalkylalkyl group, aryl substituted C1-12 alkyl group or aryl group;
- each Y1 is independently a C1-12 alkylene group;
- m is an integer from 1 to 10;
- and q is an integer from 0 to 4.
A holographic recording medium comprising:
- a) at least one polyfunctional epoxide monomer or oligomer represented by the following structural formula:
- wherein:
- each group R7 is an unsubstituted aliphatic group, a substituted aliphatic group, an unsubstituted aryl group, a substituted aryl group;
- each group R8 is R9, hydrogen, an alkenyl, a substituted or unsubstituted C1-12 alkyl, C1-12 cycloalkyl, aryl substituted C1-12-alkyl or aryl or Rz—(O—Y1)m—, (Rz)3Si—(O—Si(Rz)2)q—Y1— or (Rz)3Si—(O—Si(Rz)2)q—O—;
- each R9 is independently represented by the following structural formula:
- wherein:
- X1 and X2 are independently an inert linking group;
- each Ra is independently a substituted or unsubstituted aliphatic group or a substituted or unsubstituted aryl group;
- each Rb is an aliphatic group substituted with an epoxide;
- each Rz is independently a substituted or unsubstituted C1-12 alkyl group, C1-12 cycloalkylalkyl group, aryl substituted C1-12 alkyl group or aryl group;
- each Y1 is independently a C1-12 alkylene group;
- m is an integer from 1 to 10;
- and q is an integer from 0 to 4;
- 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.
Dependencies are inferred from the claim text.