Phthalocyanines with peripheral siloxane substitution
US6498249B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2001 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Jun 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0838
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is phthalocyanine compounds with peripheral siloxane substitution, as well as methods for making these compounds and various uses thereof, having the basic structure: wherein—W—X—Y—Z are peripheral groups comprising individual W, X, Y, and Z subgroups;W is a linkage represented by the formula: —D—(R1)0,1—, where D=S or O;X is: —(CH2)n—, n=2 to 8;Y is a siloxane chain;Z is an aryl or alkyl terminal cap;M is two protons or a metal ion;and forms a transparent film of high optical quality with large nonlinear absorption and thermal refraction, free of scattering from solid or liquid crystalline domains making them highly suitable for use as the active component in thin films, protective eye wear, and optical data storage applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.