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Title:
PHOTOTROPIC COMPOSITION
Document Type and Number:
Japanese Patent JPH01163184
Kind Code:
A
Abstract:
A photochromatic composition contains at least two photochromatic compounds, defined by the general formula: wherein the various substituents from R1 to R7 and X are as defined in the specification. In such a mixture, at least one photochromatic compound is defined by the general formula, wherein R7 represents a hydrogen atom, and at least one further compound is also defined by the general formula, wherein R7 represents an -NR8 R9, with R8 and R9 having the meaning as defined in the text.

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Inventors:
NIKOORA KAJITSURI
RUCHIAANA KURISHI
FUIORENZO RENJI
FURANKO RIBETSUCHI
Application Number:
JP27761188A
Publication Date:
June 27, 1989
Filing Date:
November 04, 1988
Export Citation:
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Assignee:
ENICHEM SINTESI
International Classes:
C07D498/20; C07D521/00; C09K9/02; G03C1/685; C07D498/10; G03C1/72; (IPC1-7): C07D498/10; C07D498/20; C07D521/00; C09K9/02
Attorney, Agent or Firm:
Kimura Masami



 
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