Color-changing indoline-heterocyclic compounds

Details Color-changing indoline-heterocyclic compounds Color-changing indoline-heterocyclic compounds

Category

G - Physics

Subcategory

09

Subsubcategory

F

CPC

42/1, 204/179

IPC codes

G09F 13/00 (2006.01) C07D 498/04 (2006.01) C09B 23/10 (2006.01) C09B 23/14 (2006.01) C09K 9/02 (2006.01) G02F 1/17 (2006.01)

Type

Patent

Patent number

CA 1064858

Description

Abstract of the Disclosure The invention relates to apparatus for containing color changing compounds. The compounds are represented by the formula: Image (1) wherein Q represents a benzene ring with or without a second fused benzene ring and/or at least one ring substituent selected from the group consisting of lower alkyl, lower alkoxy, halogen carboxy, carboalkoxy, nitro, non-substituted- amino, mono-alkyl substituted-amino, di-alkyl substituted-amino, substituted-phenyl amino, non-substituted-phenyl amino, substituted-phenoxy amino, non-substituted-phenoxy amino, acetoamino, low alkoxy carbonyl, cyano, substituted-phenyl, non-substituted-phenyl, substituted-di-lower alkyl, and substituted-di-lower alkoxy; R1 and R2 are the same or different and represent lower alkyl radicals; R3 represents hydrogen or lower alkyl radicals; Y represents oxygen (o) or sulfur (S); and Z represents an alkylene radical of 2 to 4 carbon atoms with or without alkyl substituents necessary to form a ring structure together with -N-?-Y-; and A represents a nitrogen atom substituted by a phenyl radical. She apparatus consists of a pair of electrodes arranged with a suitable gap therebetween, at least one of the electrodes being transparent, and an insulating spacer. The invention enables a color change to be brought about without requiring large amounts of energy and the color change is quite stable.

Application Number

235609

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