Indolino-spiroquinoxalino oxazine photochromatic compounds, meth

Details Indolino-spiroquinoxalino oxazine photochromatic compounds, meth Indolino-spiroquinoxalino oxazine photochromatic compounds, meth

1990-06-05

1992-08-18

Stoll, Robert L.

Compositions

Light transmission modifying compositions

Displaying color change

252600, 544 71, G02B 523, G03C 100, C07D26500

Patent

active

051397072

ABSTRACT:
The new photochromic compounds of the invention have the formula of a indolino-spiro-oxazine comprising an indolinic part and an oxazine part wherein the oxanine part comprises an unsaturated 6-atoms bi-aza heterocycle of the pyrimidine type included in a nucleus of the quinazoline part.
Preferred photochromic compounds are those showing the following developed formula (II) wherein

REFERENCES:
patent: 4637698 (1987-01-01), Kwak et al.
patent: 4719296 (1988-01-01), Irie et al.
patent: 4720547 (1988-01-01), Kwak et al.
patent: 4931220 (1990-06-01), Haynes et al.
patent: 4962013 (1990-10-01), Tateoka et al.
patent: 4968454 (1990-11-01), Crano et al.
patent: 4986934 (1991-01-01), Kwiatkowski et al.

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