US4767571A
Expired / Lapsed
US
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Infrared absorbent
Assignee: Fujifilm Corp
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Filing: 1985-06-21
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Granted: 1988-08-30
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Expires: 2005-06-21
Abstract
Abstract The present invention relates to an infrared absorbent comprising a metal complex. With the use of the infrared absorbent, there is provided an infrared absorbing material capable of absorbing near infrared light having a wavelength of 700-1500 nm or far infrared light with a high transmittance of visible light and a good fastness to heat and light. The infrared absorbent is suitable for various applications such as a safelight filter for infrared sensitive materials, control of growth of plants, cut-off of heat radiation, infrared cut filter harmful to tissues of human eyes, infrared cut filter for semiconductor light receiving elements or color solid image pick-up elements, and infrared cut filter for an optoelectronic integrated circuit wherein electrical and optical elements are incorporated in the same substrate.
Inventors
- 👤 Yoshiaki Suzuki
- 👤 Gouichi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:32
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/223; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0662; G11B7/249; G11B7/245; G11B7/2492; G11B7/2495; G11B7/252; G11B7/253; G11B7/2533; G11B7/2534
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
141 words
A compound having the formula: ##STR13## wherein: M represents copper, cobalt, nickel, palladium or platinum; cat represents a cation to neutralize a complex; R 1 to R 8 each independently represents a member selected from the group consisting of a hydrogen atom, alkoxy group, amino group, halogen atom, cyano group, hydroxyl group, alkyl group, aryl group and heterocyclic group, said heterocyclic group being a 5-membered or a 6-membered ring containing at least one nitrogen, oxygen or sulfur atom as a hetero atom therein, said alkyl, aryl or heterocyclic group optionally being bonded through a divalent connecting group, which may be the same or different, to a benzene ring with the proviso that at least one of said R 1 to R 8 is an electron donating group when said Cat is a cation other than a quaternary phosphonium or iminium cation.
Claim 2
Dependent Claim
141 words
A compound having the formula: ##STR13## wherein: M represents copper, cobalt, nickel, palladium or platinum; cat represents a cation to neutralize a complex; R 1 to R 8 each independently represents a member selected from the group consisting of a hydrogen atom, alkoxy group, amino group, halogen atom, cyano group, hydroxyl group, alkyl group, aryl group and heterocyclic group, said heterocyclic group being a 5-membered or a 6-membered ring containing at least one nitrogen, oxygen or sulfur atom as a hetero atom therein, said alkyl, aryl or heterocyclic group optionally being bonded through a divalent connecting group, which may be the same or different, to a benzene ring with the proviso that at least one of said R 1 to R 8 is an electron donating group when said Cat is a cation other than a quaternary phosphonium or iminium cation.
Claim 3
Dependent Claim
31 words
The compound of claim 1, wherein R 1 to R 8 each independently represents a hydrogen atom, halogen atom, cyano group, hydroxyl group, an alkyl group, aryl group or heterocyclic group.
Claim 4
Dependent Claim
14 words
The compound of claim 2, wherein Cat represents a quaternary phosphonium or iminium cation.
Claim 5
Dependent Claim
30 words
The compound of claim 1, wherein R 1 to R 8 each independently represents a hydrogen atom, halogen atom, cyano group, hydroxyl group, alkoxy group, aryl group or heterocyclic group.
Claim 6
Dependent Claim
14 words
The compound of claim 4, wherein Cat is a quaternary phosphonium or iminium cation.
Claim 7
Dependent Claim
38 words
The compound of claim 1, wherein Cat represents a quaternary ammonium cation, and R 1 to R 8 each independently represents a hydrogen atom, halogen atom, cyano group, hydroxyl group, an alkyl group, aryl group or heterocyclic group.
Claim 8
Dependent Claim
43 words
The compound of claim 1, wherein M is a nickel, and Cat is a quaternary ammonium cation, and R 1 to R 8 each independently represents a hydrogen atom, halogen atom, cyano group, hydroxyl group, an alkyl group, aryl group or heterocyclic group.
Claim 9
Dependent Claim
15 words
The compound of claim 1, wherein Cat is a monovalent inorganic cation or onium ion.
Claim 10
Dependent Claim
11 words
The compound of claim 1, wherein Cat is an onium ion.
Claim 11
Dependent Claim
14 words
The compound of claim 1, wherein Cat is a quaternary phosphonium or iminium cation.
Claim 12
Dependent Claim
31 words
The compound of claim 1, wherein Cat is a quaternary phosphonium cation, and R 1 to R 8 each independently represents a hydrogen atom, a halogen atom, or an alkyl group.
Claim 13
Dependent Claim
18 words
The compound of claim 1, wherein M is selected from the group consisting of nickel, palladium and platinum.
Claim 14
Dependent Claim
11 words
The compound of claim 1, wherein M is palladium or platinum.
Claim 15
Dependent Claim
29 words
The compound of claim 1, wherein said electron donating group has a negative sigma value of Hammet's rule, the absolute value of said sigma value being 0.20 or more.
Claim 16
Dependent Claim
18 words
The compound of claim 14, wherein M is selected from the group consisting of nickel, palladium and platinum.
Claim 17
Dependent Claim
11 words
The compound of claim 15, wherein M is palladium or platinum.
Claim 18
Dependent Claim
39 words
The compound of claim 1, wherein said electron donating group is selected from the group consisting of an alkoxy group containing 1 to 20 carbon atoms, an aryloxy group containing 6 to 14 carbon atoms, and an amino group.
Claim 19
Dependent Claim
11 words
The compound of claim 17, wherein M is palladium or platinum.
Claim 20
Dependent Claim
37 words
The compound of claim 1, wherein Cat is an iminium cation, and R 1 to R 8 are selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, and an alkyl group.
Claim 21
Dependent Claim
15 words
The compound of claim 1, wherein said alkyl group contains 1 to 20 carbon atoms.
Claim 22
Dependent Claim
15 words
The compound of claim 1, wherein said aryl group contains 6 to 14 carbon atoms.
Claim 23
Dependent Claim
14 words
The compound of claim 1, which absorbs infrared rays are at about 900 nm.
Claim 24
Dependent Claim
155 words
An infrared absorbing composition comprising an effective amount of at least one compound having the formula: ##STR14## wherein: M represents copper, cobalt, nickel palladium or platinum; Cat represents a cation to neutralize a complex; R 1 to R 8 each independently represents a member selected from the group consisting of a hydrogen atom, alkoxy group, amino group, halogen atom, cyano group, hydroxyl group, alkyl group, aryl group and heterocyclic group, said heterocyclic group being a 5-membered or a 6-membered ring containing at least one nitrogen, oxygen or sulfur atom as a hetero atom therein, said alkyl, aryl or heterocyclic group optionally being bonded through a divalent connecting group, which may be the same or different, to a benzine ring, with the proviso that at least one of said R 1 to R 8 is an electron donating group when said Cat is a cation other than a quaternary phosphonium or iminium cation; and a binder.
Claim 25
Dependent Claim
155 words
An infrared absorbing composition comprising an effective amount of at least one compound having the formula: ##STR14## wherein: M represents copper, cobalt, nickel palladium or platinum; Cat represents a cation to neutralize a complex; R 1 to R 8 each independently represents a member selected from the group consisting of a hydrogen atom, alkoxy group, amino group, halogen atom, cyano group, hydroxyl group, alkyl group, aryl group and heterocyclic group, said heterocyclic group being a 5-membered or a 6-membered ring containing at least one nitrogen, oxygen or sulfur atom as a hetero atom therein, said alkyl, aryl or heterocyclic group optionally being bonded through a divalent connecting group, which may be the same or different, to a benzine ring, with the proviso that at least one of said R 1 to R 8 is an electron donating group when said Cat is a cation other than a quaternary phosphonium or iminium cation; and a binder.
Claim 26
Dependent Claim
34 words
The infrared absorbing composition as in claim 23, wherein R 1 to R 8 each independently represents a hydrogen atom, halogen atom, cyano group, hydroxyl group, alkoxy group, an aryl group or heterocyclic group.
Claim 27
Dependent Claim
41 words
The infrared absorbing composition as in claim 23, wherein Cat represents a quaternary ammonium cation, and R 1 to R 8 each independently represents a hydrogen atom, halogen atom, cyano group, hydroxyl group, an alkyl group, aryl group or heterocyclic group.
Claim 28
Dependent Claim
17 words
The infrared absorbent composition as in claim 23, wherein Cat is a quaternary phosphonium or iminium cation.
Claim 29
Dependent Claim
21 words
The infrared absorbent composition as in claim 23, wherein M is selected from the group consisting of nickel, palladium and platinum.
Claim 30
Dependent Claim
18 words
The infrared absorbing composition as in claim 23, wherein said alkyl group contains 1 to 20 carbon atoms.
Claim 31
Dependent Claim
18 words
The infrared absorbing composition as in claim 23, wherein said aryl group contains 6 to 14 carbon atoms.
Claim 32
Dependent Claim
16 words
The infrared absorbing composition as in claim 23, which absorbs infrared rays at about 900 nm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |