Removable imbibition composition of photochromic compound and kinetic enhancing additive
US6433043B1 · kind B1 · utility
83Cited by
10References
10Claims
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Assignee
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Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00903
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Described are organic photochromic imbibition compositions that incorporate kinetic enhancing additive(s). Kinetic enhancing additives include epoxy-containing compounds, organic polyols and/or plasticizers that improve the performance of organic photochromic compounds as determined in the Photochromic Performance Test. Also described is a process for incorporating kinetic enhancing additives into polymeric substrates with organic photochromic compounds and the resulting photochromic articles produced by such a process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.