Invention Grant
- Patent Title: Volume type hologram recording photosensitive composition, volume type hologram recording medium using the same and method of producing volume type hologram
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Application No.: US10228676Application Date: 2002-08-27
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Publication No.: US07018744B2Publication Date: 2006-03-28
- Inventor: Hiroyuki Otaki , Toshio Yoshihara
- Applicant: Hiroyuki Otaki , Toshio Yoshihara
- Applicant Address: JP Tokyo-To
- Assignee: Dai Nippon Printing Co, LTD
- Current Assignee: Dai Nippon Printing Co, LTD
- Current Assignee Address: JP Tokyo-To
- Agency: Seyfarth Shaw LLP
- Agent Timothy J Keefer
- Priority: JP2001-256485 20010827
- Main IPC: G03H1/04
- IPC: G03H1/04

Abstract:
The present invention provides a volume type hologram recording photosensitive composition. A type (i) composition comprises one or more photopolymerizable compounds, a heat-curable compound and a heat-curing crosslinking agent, wherein the heat-curing crosslinking agent is a latent heat-curing crosslinking agent which is not reacted in an interference exposure process, is not reacted at the heating temperature used in a refractive index-modulation promoting process and becomes active at the heating temperature used in a heat-curing process. A type (ii) composition further comprises a binder resin beside the type (i) volume type composition.
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