Process and composition for rapid mass production of holographic recording article
US6743552B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | May 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2270/53
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rapid mass production of the high performance holographic recording articles including the process and composition are described. To prepare a high performance holographic recording article based on two-component urethane matrix system, for example, polyols and all the additives must be virtually free of moisture contents. Deaeration must be carried out, once isocyanate and polyols including catalysts and all other ingredients are mixed together, to eliminate all entrapped air that is introduced into the mixture during mixing. The deaeration takes time, and the urethane reaction must not be allowed to take place until all air bubbles are evacuated from the isocyanate-polyols mixture. The rapid mass production of this invention overcomes such process limitations and results in a high-volume production of the high performance holographic recording articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.