Trifluoromethyl substituted spirooxazine photochromic dyes

Details Trifluoromethyl substituted spirooxazine photochromic dyes Trifluoromethyl substituted spirooxazine photochromic dyes

1985-12-02

1987-10-13

Terapane, John F.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Physical developing

350354, 430345, 544 70, 544 71, 252586, G03C 1733, G02B 523, G02F 101, C07D26500

Patent

active

046994734

ABSTRACT:
The organic photochromic composition of this invention comprises trifluoromethyl substituted spiro (indoline-2,3'-(3H) napth-(2,1-b)(1,4)oxazine) (SO) dyes. This new class of (SO) photochromic compounds has a more neutral color when subjected to ultraviolet light irradiation.
When used with a photochromic plastic embodiment, these (SO) compounds give the plastic embodiment a high luminous transmittance in an unactivated state, which can be darkened significantly when subjected to ultraviolet light irradiation. When an ultraviolet stabilizer is used with the photochromic compositions of this invention, the light fatigue resistance of the (SO) dye is improved and it will not hinder the photocolorability of the photochromic composition.

REFERENCES:
patent: 3562172 (1971-02-01), Ono et al.
patent: 3578602 (1971-05-01), Ono et al.
patent: 4215010 (1980-07-01), Hovey et al.
patent: 4342668 (1982-08-01), Hovey et al.
patent: 4440672 (1984-04-01), Chu

Affiliated with

Also associated with

Rating

Trifluoromethyl substituted spirooxazine photochromic dyes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Trifluoromethyl substituted spirooxazine photochromic dyes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trifluoromethyl substituted spirooxazine photochromic dyes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-408154