Near-infrared sensitive phthalocyanine-polymer compositions
US4816386A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jan 5, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A novel near-infrared sensitive phthalocyanine-polymer composition comprises a substituted aluminum phthalocyanine and a polymer wherein substituted aluminum phthalocyanine dimers and/or dimer aggregates which are responsible to the near-infrared sensitivity, are included. The near-infrared sensitive phthalocyanine-polymer composition has useful characteristics: PA0 (A) when the near-infrared sensitive phthalocynaine-polymer composition is heated above the T.sub.g (Glass Transition Temperature) of the polymer either by direct heating and by absorbing irradiated light energy, optical properties of said near-infrared sensitive phthalocyanine-polymer composition; absorbance and/or reflectivity, are capable of being changed, PA0 (B) the thermal change of optical properties of the near-infrared sensitive phthalocyanine-polymer composition can be fixed by further heating above the T.sub.f (Thermal Fixation Temperature) higher than the T.sub.g of the polymer, PA0 (C) said near-infrared sensitive phthalocyanine-polymer composition is capable of being insolubilized to a solvent by heating above the T.sub.f, PA0 (D) said near-infrared sensitive phthalocyanine-polymer compositions both of unh…
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