Gas phase hardening of gelatin holograms

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

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430289, 430451, G03C 522

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active

049045547

ABSTRACT:
A process for hardening gelatin holograms after dehydration involving subjecting the hologram to an atmosphere containing aldehyde vapor and water vapor. The process provides hardening of the gelatin hologram to increase resistance to moisture and heat without adversely affecting diffraction efficiency. Monitoring of the diffraction efficiency during the aldehyde-water vapor treatment allows fine tuning of the hologram efficiency and evenness.

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