JPS644688A - Photochromic composition - Google Patents
Photochromic compositionInfo
- Publication number
- JPS644688A JPS644688A JP15761287A JP15761287A JPS644688A JP S644688 A JPS644688 A JP S644688A JP 15761287 A JP15761287 A JP 15761287A JP 15761287 A JP15761287 A JP 15761287A JP S644688 A JPS644688 A JP S644688A
- Authority
- JP
- Japan
- Prior art keywords
- group
- photochromic
- formula
- same
- different
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Indole Compounds (AREA)
Abstract
PURPOSE:To enable formation of a photochromic compsn. which can be reversibly changed from a transparent form to a colored or hyperchromic form with light contg. ultraviolet ray, such as sunlight or mercury lamp and exhibits excellent dimming property, by mixing two types of particular photochromic compds. in a particular ratio. CONSTITUTION:A photochromic compsn. comprising at least one photochromic compd of formula I and at least one photochromic compd. of formula II in a wt. ratio of 1:0.01-100. In formulae I an II, formulae III and IV which may be the same or different are each a norbornylidene group or a substd. norbornylidene group; R1's which may be the same or different are each H, an alkyl group, an aryl group, an aralkyl group, or a heterocyclic group; X's which may be the same or different are O or a group of formula V (wherein R2 is H, an aryl group, an alkyl group, or an aralkyl group); R3 is H or an alkyl group; and a group of formula VI is a heterocyclic group formed by condensation of the same or different aromatic groups, unsatd. heterocyclic groups, or benzene rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15761287A JPS644688A (en) | 1987-06-26 | 1987-06-26 | Photochromic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15761287A JPS644688A (en) | 1987-06-26 | 1987-06-26 | Photochromic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS644688A true JPS644688A (en) | 1989-01-09 |
| JPH0523311B2 JPH0523311B2 (en) | 1993-04-02 |
Family
ID=15653533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15761287A Granted JPS644688A (en) | 1987-06-26 | 1987-06-26 | Photochromic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS644688A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY120090A (en) * | 1999-06-25 | 2005-08-30 | Glaxo Group Ltd | Chemical compounds. |
-
1987
- 1987-06-26 JP JP15761287A patent/JPS644688A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY120090A (en) * | 1999-06-25 | 2005-08-30 | Glaxo Group Ltd | Chemical compounds. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0523311B2 (en) | 1993-04-02 |
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