Title:
クロメン化合物
Document Type and Number:
Japanese Patent JP4369754
Kind Code:
B2
Abstract:
A chromene compound represented by the general formula (1), wherein R<1> to R<4> are hydrogen atoms, hydroxyl groups, alkyl groups, alkoxy groups, substituted amino groups or halogen atoms, R<1> to R<4> may be bonded together to form a ring; R<5> and R<6> are alkyl groups, aryl groups or heteroaryl groups, or R<5> and R<6> together may form a ring, a cyclic group containing X or Y is an aromatic hydrocarbon group or an aromatic heterocyclic group, and a divalent group Z is an alkylene group. This compound exhibits excellent photochromic properties, such as small initial color, a large fading rate, excellent resistance and developing a color tone of a neutral tint.
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Inventors:
Hasumi Ito
Yoshin Nagasato
Yoshin Nagasato
Application Number:
JP2003544039A
Publication Date:
November 25, 2009
Filing Date:
November 15, 2002
Export Citation:
Assignee:
Tokuyama Corporation
International Classes:
C07D311/92; C07D311/78; C07D311/94; C07D311/96; C07D491/06; C07D493/06; C07D493/10; C09K9/02; G02B1/04; G03C1/73
Domestic Patent References:
| JP2000327676A |
Foreign References:
| WO2000077007A1 | ||||
| WO2001036406A1 | ||||
| US5783116 |
Attorney, Agent or Firm:
Naozumi Ono
Sachiko Okunuki
Sachiko Okunuki