Photochromic compounds, a process for their preparation, and the

Details Photochromic compounds, a process for their preparation, and the Photochromic compounds, a process for their preparation, and the

1990-11-21

1994-05-10

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 49, 546 62, 546 70, 546103, 546192, 546207, 546208, 546209, 544 60, 544145, 544147, 544148, 544173, 544174, 544180, 5483644, 548418, 548423, 548517, 548518, 548525, 549 23, 549 24, 549 27, 549391, 549 25, 549234, 549235, C07D47122, C07D33516, C07D40914, C07D31186

Patent

active

053109090

ABSTRACT:
Compounds of the formula I ##STR1## in which X is O, S, SO, SO.sub.2 or NR.sub.13, R.sub.13 is, for example, methyl, and R.sub.1 to R.sub.12, independently of one another, are, for example, H, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 Alkoxy, halogen or --CN. The compounds are photosensitive and photochromic and are suitable as photosensitizers and simultaneously as color indicators, and as photoswitchable color filters.

REFERENCES:
patent: 3706768 (1972-12-01), Boys et al.
patent: 4506083 (1985-03-01), Kirta et al.
patent: 4681950 (1987-07-01), Fischer et al.
patent: 4752813 (1978-08-01), Shen et al.
Derwent Abstract 83-744573/34 (1983).
B. K. Manukian, Helv. Chim. Acta, 59, 2609 (1976).
Chem. Abst. 53, 411c (1959).

Affiliated with

Also associated with

Rating

Photochromic compounds, a process for their preparation, and the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photochromic compounds, a process for their preparation, and the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photochromic compounds, a process for their preparation, and the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2413277