Composition for holographic recording medium, cured product for holographic recording medium, and holographic recording medium
AssigneeMitsubishi Chemical Corporation
InventorsAsato Tanaka, Takanori Shimizu
Life of this patent
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Abstract
A holographic recording medium composition contains an isocyanate group-containing compound (component (a-1)), an isocyanate-reactive functional group-containing compound (component (b-1)), a polymerizable monomer (component (c-1)), a photopolymerization initiator (component (d-1)), and a stable nitroxyl radical group-containing compound (component (e-1)). A ratio of the total weight of a propylene glycol unit and a tetramethylene glycol unit that are contained in the component (b-1) to the total weight of the component (a-1) and the component (b-1) is 30% or less.
Claims18
A holographic recording medium composition, comprising:
- component (a-1):
- an isocyanate group-containing compound;
- component (b-1):
- which consists of at least one isocyanate-reactive functional group-containing compound containing two or more isocyanate-reactive functional groups;
- component (c-1):
- a polymerizable monomer;
- component (d-1):
- a photopolymerization initiator;
- and
- component (e-1):
- a stable nitroxyl radical group-containing compound,
- wherein
- a ratio of a total weight of a propylene glycol unit and a tetramethylene glycol unit in the component (b-1) to a total weight of the component (a-1) and the component (b-1) is 30.0% or less;
- a ratio of a weight of a caprolactone unit in the component (b-1) to the total weight of the component (a-1) and the component (b-1) is 20% or more;
- and
- the holographic recording medium composition does not comprise a chain transfer agent.
Dependencies are inferred from the claim text.