Title:
PHOTOCHROMIC COMPOUND
Document Type and Number:
Japanese Patent JP3358749
Kind Code:
B2
Abstract:
PURPOSE: To provide a compound which exhibits a desirable green color in the darkened state and is capable of having a useful infrared absorbance at about 780 nm in the near infrared region in the state.
CONSTITUTION: There is provided a photochromic compound characterized in that it has a structure including spiro-pyrrolidinebenzoxazine comprising a pyrrolidine moiety and a benzoxazine moiety, the benzoxazine moiety containing at least one mesomeric electron donating group selected from amino and alkoxy moieties and one or more electron donating groups linking to 6' position via attachment to a bonded system of an unsaturated bond forming the linkage selected from-C=C-, -C≡C-, -C=N- and -N=N-.
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| JPH0356431 | DIPHENYL COMPOUND |
Inventors:
Martin Rick Wood
Shawn Derek Marsden
Victoria Emma Askew
Shawn Derek Marsden
Victoria Emma Askew
Application Number:
JP33940793A
Publication Date:
December 24, 2002
Filing Date:
December 03, 1993
Export Citation:
Assignee:
Pilkington plc
International Classes:
C07C215/74; C07C291/04; C07D295/12; C07D455/04; C07D498/20; C07D519/00; C08K5/357; C08L1/12; C08L1/14; C08L25/06; C08L29/04; C08L33/12; C08L33/20; C08L67/03; C08L69/00; C08L75/04; C09K3/00; C09K9/02; C07D498/10; G03C1/685; (IPC1-7): C07D498/10; C07C215/74; C07D295/12; C07D455/04; C07D498/20; C07D519/00; C08K5/357; C08L1/12; C08L1/14; C08L25/06; C08L29/04; C08L33/12; C08L33/20; C08L67/03; C08L69/00; C08L75/04; C09K3/00; C09K9/02
Domestic Patent References:
| JP710882A | ||||
| JP748380A | ||||
| JP476087A |
Attorney, Agent or Firm:
Yoshiyuki Inaba (2 outside)
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