TH49388B - New types of photochromic naphthopyran - Google Patents

Abstract

Described as photochromic compounds 2H-Naphtho [1,2-b] Piran New species with important characteristics With two adjacent groups that can be modulated with A group that gives the electrons that Forces at positions 8 and 9 or heterocyclic fuse groups produced by the combined displacement group Which is soft enough to moderate The group gave the electron at position 2 and gave a rate of at least 80 in the delta OD relative to the Saturation test The compounds also have a fixed group at position 5 and, by option, at position 6, of the naphtho compound part. May be represented by the following graphic structural formulas (chemical formulas) are also described as organic polymer material sources that are composite or coated with these compounds. By choice of things Transparent visible matter, such as optical lenses or other plastic translucent materials that are compatible with new naphthopyran compounds, or combining them with photochromic compounds such as other naphthopyran Of course, benzopyran and spirulina (Indo Line) compounds are also described:

Claims (1)

1. Naphthopyran compounds of the structure 2H-Neffo [1,2-b] Piran Characteristic with (a) group R3 in position 8, selectable from group containing (i) -OR12, where R12 is hydrogen, C1-C6 alkyl, substrate group, Phenyl and phthyl mono-and di-substatic aryls, phenyl (C1-C3) alkyl, mono (C1-C6) alkyl substrate Phenyl (C1-C3) alkyl, mono, (C1-C6) alkoxy, substandard phenyl (C1-C3) alkyl, C1-C6 alkyl (C2- C4) alkyl, C3-C7 cyclo-alkyl, mono (C1-C4) al