US5582774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylphthalocyanine near-infrared absorbers and recording/display materials using the same
Assignee: Yamamoto Chemicals Inc
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Filing: 1991-02-26
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Granted: 1996-12-10
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Expires: 2011-02-26
Abstract
Abstract Near-infrared absorbers which contain phthalocyanine derivatives in which the four benzene rings contained in the molecule independently have 1 to 4 substituents are light and thermal resistant and possess high molar extinction coefficients. Such near-infrared absorbers are useful in optical recording media, near-infrared absorption filters, and liquid crystal display devices.
Inventors
- 👤 Hisato Itoh
- 👤 Katashi Enomoto
- 👤 Takahisa Oguchi
- 👤 Tsutomu Nishizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; C; C09; C09K; C09K19/00; C09K19/52; C09K19/60; C09B; C09B47/00; C09B47/04; C09B47/045; C09B47/06; C09B47/062; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; Y; Y10; Y10S; Y10S430/00; Y10S430/145; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
223 words
A near-infrared absorption filter comprising a phthalocyanine derivative of the formula (I) ##STR11## wherein R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 independently are alkyl, arylmethyl, alkoxymethyl, alkylthiomethyl, alkylaminomethyl, dialkylaminomethyl, aryloxymethyl, arylthiomethyl, arylaminomethyl, diarylaminomethyl or alkylarylaminomethyl, wherein the total number of carbon, oxygen, nitrogen and sulfur atoms present in each of R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 is in the range of 5 to 12; R 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 and R 15 independently are hydrogen, alkyl, arylmethyl, alkoxymethyl, alkylthiomethyl, alkylaminomethyl, dialkylaminomethyl, aryloxymethyl, arylthiomethyl, arylaminomethyl, diarylaminomethyl, alkylarylaminomethyl, alkylthio, arylthio, alkoxy, aryloxy or aryl, but all of R 2 , R 3 , R 6 , R 7 , R 10 , R ll , R 14 and R 15 are not hydrogen when all of R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 are aryloxymethyl or alkyl; and Met is two hydrogen atoms, a divalent metal atom, a monosubstituted trivalent metal atom, a disubstituted tetravalent metal atom or an oxymetal group.
Claim 2
Dependent Claim
223 words
A near-infrared absorption filter comprising a phthalocyanine derivative of the formula (I) ##STR11## wherein R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 independently are alkyl, arylmethyl, alkoxymethyl, alkylthiomethyl, alkylaminomethyl, dialkylaminomethyl, aryloxymethyl, arylthiomethyl, arylaminomethyl, diarylaminomethyl or alkylarylaminomethyl, wherein the total number of carbon, oxygen, nitrogen and sulfur atoms present in each of R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 is in the range of 5 to 12; R 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 and R 15 independently are hydrogen, alkyl, arylmethyl, alkoxymethyl, alkylthiomethyl, alkylaminomethyl, dialkylaminomethyl, aryloxymethyl, arylthiomethyl, arylaminomethyl, diarylaminomethyl, alkylarylaminomethyl, alkylthio, arylthio, alkoxy, aryloxy or aryl, but all of R 2 , R 3 , R 6 , R 7 , R 10 , R ll , R 14 and R 15 are not hydrogen when all of R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 and R 16 are aryloxymethyl or alkyl; and Met is two hydrogen atoms, a divalent metal atom, a monosubstituted trivalent metal atom, a disubstituted tetravalent metal atom or an oxymetal group.
Claim 3
Dependent Claim
45 words
The near-infrared absorption filter of claim 1, wherein R 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 and R 15 independently are alkyl, arylmethyl, alkoxymethyl, alkylthiomethyl, alkylaminomethyl, dialkylaminomethyl, aryloxymethyl, arylthiomethyl, arylaminomethyl, diarylaminomethyl or alkylarylaminomethyl.
Claim 4
Dependent Claim
42 words
The filter of claim 1, wherein R 1 , R 4 , R 5 , R 8 , R 9 , R 12 , R 13 , and R 16 independently are alkyl or arylmethyl groups having 5 to 12 carbon atoms.
Claim 5
Dependent Claim
43 words
The near-infrared absorption filter of claim 3, wherein R 2 , R 3 , R 6 , R 7 , R 10 , R 11 , R 14 and R 15 independently are alkyl or arylmethyl groups having 5 to 12 carbon atoms.
References Cited (Backward Citations)
GB1164234A
Cited
JPS5646221A
Cited
JPS5863490A
Cited
JPS58112790A
Cited
JPS58175693A
Cited
JPS6015458A
Cited
US4529688A
Cited
EP0155780A2
Cited
US4606859A
Cited
EP0188941A1
Cited
JPS61291651A
Cited
EP0232964A2
Cited
WO1988006175A1
Cited
US5446141A
Cited
US5296162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-10 | 2000-06-10 | 2000-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-10 | 2004-06-10 | 2004-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-10 | 2008-06-10 | 2008-12-10 | $7700.00 | Window Closed / Lapsed |