发明名称 |
Photoreactive lenses with adamantane spiro compounds |
摘要 |
Photoreactive plastics lenses are disclosed which are coated or impregnated with an adamantane 2-spiro-benzo or naphthopyran and with a blue coloring photochromic benzo- or naphthopyran having a nitrogen containing substituent in the 2-position in the pyran ring. The lenses darken in sunlight and fade rapidly at ambient temperatures in the dark or in white light which does not contain a U.V. component. The combination of the yellow/orange coloring adamantane 2-spiro pyran compound with the purple/blue coloring pyran gives a desired brown/grey coloration in the sunlight-darkened lens. The invention includes novel blue-coloring pyran compounds in which the nitrogen-containing substituent in the 2-position is a phenyl group having an amino or substituted amino or nitrogen-containing heterocyclic substituent in the ortho- or para-position of the phenyl group. The basic chromene structure and the suffix N will be used to distinguish the blue-coloring pyran compounds having a nitrogen-containing substituent, namely: <IMAGE> <IMAGE> <IMAGE> <IMAGE>
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申请公布号 |
US4818096(A) |
申请公布日期 |
1989.04.04 |
申请号 |
US19870063054 |
申请日期 |
1987.06.17 |
申请人 |
THE PLESSEY COMPANY PLC |
发明人 |
HELLER, HARRY G.;OLIVER, STEPHEN N.;WHITTALL, JOHN;BRETTLE, JACK;TRUNDLE, CLIVE;BASKERVILLE, MARTIN W. |
分类号 |
C07D295/02;C07D295/033;C07D311/92;C07D493/04;G02B3/00;G02B5/23;G02C7/10;(IPC1-7):G02B27/00;C07D265/00;G03C1/733 |
主分类号 |
C07D295/02 |
代理机构 |
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