Patent US5296162A successfully refreshed from Google Patents.
US5296162A
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Near infrared absorbers and display/recording materials using the same
Assignee: Yamamoto Chemicals Inc
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Filing: 1992-03-02
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Granted: 1994-03-22
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Expires: 2012-03-02
Abstract
Abstract Near infrared absorbers which have a molecular extinction coefficient of 200,000 or more and are represented by the formula (I) (* CHEMICAL STRUCTURE *) (I) wherein each of Y1, Y2, Y3, Y4, Y5, Y6, Y7 and Y8 is hydrogen, an alkyl group, alkoxyl group or alkylthio group; each of A1, A2, A3, A4, A5, A6, A7 and A8 is hydrogen, halogen, a nitro group, alkyl group, aralkyl group, alkenyl group, alkynyl group, alkoxyl group, aryloxy group, alkylthio group or arylthio group; and Met represents two hydrogen atoms or a metal, are useful for the production of optical display and recording materials.
Inventors
- 👤 Hisao Itoh
- 👤 Katashi Enomoto
- 👤 Takahisa Oguchi
- 👤 Tutomu Nishizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:03
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; C; C09; C09K; C09K3/00; C07; C07D; C07D487/00; C07D487/22; C07F; C07F11/00; C07F5/00; C07F5/06; C07F5/069; C07F7/00; C07F7/02; C07F7/025; C07F7/30; C07F9/00; C09B; C09B47/00; C09B47/04; C09B47/045; C09K19/00; C09K19/52; C09K19/60; G11B7/249; G11B7/2492; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/281; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133362; G11B7/25; G11B7/252; G11B7/253; G11B7/2533; G11B7/2534; G11B7/2536
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
278 words
A near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR68## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 , and Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 , A 5 A 6 , A 6 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms, or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 , A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 2
Dependent Claim
278 words
A near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR68## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 , and Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 , A 5 A 6 , A 6 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms, or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 , A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 3
Dependent Claim
287 words
An optical recording medium, comprising a recording layer which comprises a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR69## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 , Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 , A 5 A 6 , A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms, or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 , A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 4
Dependent Claim
287 words
An optical recording medium, comprising a recording layer which comprises a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR69## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 , Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 , A 5 A 6 , A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms, or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 , A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 5
Dependent Claim
282 words
A liquid crystal element comprising a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR70## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 , Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, ranched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 6
Dependent Claim
282 words
A liquid crystal element comprising a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR70## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 , Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, ranched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 7
Dependent Claim
277 words
A near infrared absorption filter comprising a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR71## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 A 3 A 4 , A 5 , A 6 A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms, or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 A 3 and A 4 A 5 and A 6 and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 8
Dependent Claim
277 words
A near infrared absorption filter comprising a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR71## wherein one of each pair of Y 1 and Y 2 , Y 3 and Y 4 Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 A 3 A 4 , A 5 , A 6 A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms, or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 A 3 and A 4 A 5 and A 6 and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 9
Dependent Claim
282 words
An optical card, comprising a recording layer which comprises a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR72## wherein one of each pair of Y 1 and Y 2 Y 3 and Y 4 Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 A 5 , A 6 , A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 , A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
Claim 10
Dependent Claim
282 words
An optical card, comprising a recording layer which comprises a near infrared absorber having a molecular extinction coefficient of 200,000 or more and represented by the formula (I) ##STR72## wherein one of each pair of Y 1 and Y 2 Y 3 and Y 4 Y 5 and Y 6 , and Y 7 and Y 8 is a branched or cyclic alkoxy group having 4 to 9 carbon atoms and the other is a straight-chain alkoxy group having 4 to 9 carbon atoms or a straight-chain alkylthio group having 4 to 9 carbon atoms; each of A 1 , A 2 , A 3 , A 4 A 5 , A 6 , A 7 and A 8 is independently a hydrogen atom, a halogen atom, a nitro group, a straight-chain, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkynyl group having 2 to 10 carbon atoms, a straight-chain or branched alkoxy group having 1 to 4 carbon atoms or a cyclic alkoxy group having 6 to 10 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, a straight-chain, branched or cyclic alkylthio group having 1 to 10 carbon atoms, or an arylthio group having 6 to 20 carbon atoms; each pair of A 1 and A 2 , A 3 and A 4 , A 5 and A 6 , and A 7 and A 8 may be bound together so as to form a ring; and Met represents two hydrogen divalent metal atom, a trivalent monosubstituted or tetravalent disubstituted metal atom, or an oxymetal group.
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