US5443940A
Expired / Lapsed
US
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Optical recording material and optical recording medium employing the same
Assignee: Kobe Natural Products and Chemicals Co Ltd
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Filing: 1993-04-14
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Granted: 1995-08-22
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Expires: 2013-04-14
Abstract
Abstract Disclosed herein is an optical recording material containing a photochromic compound which is expressed in the following general formula (I): ##STR1## where A represents an oxygen atom or a substituted or unsubstituted nitrogen atom, R 1 represents an alkoxy group, R 2 to R 5 represent substituents such as a hydrogen atom, a halogen atom, a hydroxy group, a substituted or unsubstituted alkyl group and the like respectively, and B represents a substituted or unsubstituted thiophene ring, benzothiophene ring, pyrrole ring or indole ring.
Inventors
- 👤 Fumio Tatezono
- 👤 Toshio Harada
- 👤 Masahiro Irie
- 👤 Meguru Ohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:23
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/163
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
124 words
An optical recording material containing a photochromic compound being expressed in the following general formula (I): ##STR25## where A represents an oxygen atom or a nitrogen atom, R 1 represents an alkoxy group, R 2 to R 5 represent atoms or groups selected from a group of a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an alkoxy group, a cyano group, a nitro group, an alkylcarbonyl group, an alkoxycarbonyl group, a perfluoroalkyl group, an aryl group, a cycloalkyl group, an arylcarbonyl group, an aryloxycarbonyl group, a mono- or dialkylaminocarbonyl group, an alkylcarbonyloxy group, an arylcarbonyloxy group, an aryloxy group, an alkoxycarbonyloxy group and an aryloxycarbonyloxy group respectively, and B represents a thiophene ring, benzothiophene ring, pyrrole ring or indole ring.
Claim 2
Dependent Claim
124 words
An optical recording material containing a photochromic compound being expressed in the following general formula (I): ##STR25## where A represents an oxygen atom or a nitrogen atom, R 1 represents an alkoxy group, R 2 to R 5 represent atoms or groups selected from a group of a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an alkoxy group, a cyano group, a nitro group, an alkylcarbonyl group, an alkoxycarbonyl group, a perfluoroalkyl group, an aryl group, a cycloalkyl group, an arylcarbonyl group, an aryloxycarbonyl group, a mono- or dialkylaminocarbonyl group, an alkylcarbonyloxy group, an arylcarbonyloxy group, an aryloxy group, an alkoxycarbonyloxy group and an aryloxycarbonyloxy group respectively, and B represents a thiophene ring, benzothiophene ring, pyrrole ring or indole ring.
Claim 3
Dependent Claim
49 words
An optical recording medium comprising: a recording layer containing an optical recording material in accordance with claim 1 and a polymer component; a reflective layer for reflecting light passing through said recording layer; and a substrate for supporting a laminate structure of said recording layer and said reflective layer.
Claim 4
Dependent Claim
135 words
An optical recording material in accordance with claim 1, containing a photochromic compound being expressed in the following general formula (II): ##STR26## where A represents an oxygen atom or a nitrogen atom, R 1 represents an alkoxy group, and R 2 to R 8 represent atoms or groups selected from a group of a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an alkoxy group, a cyano group, a nitro group, an alkylcarbonyl group, an alkoxycarbonyl group, a perfluoroalkyl group, an aryl group, an cycloalkyl group, an arylcarbonyl group, an aryloxycarbonyl group, a mono- or dialkylaminocarbonyl group, an alkylcarbonyloxy group, an arylcarbonyloxy group, an aryloxy group, an alkoxycarbonyloxy group and an aryloxycarbonyloxy group respectively, while R 6 and R 7 may form parts of a benzene ring to constitute a benzothiophene ring.
Claim 5
Dependent Claim
24 words
An optical recording material in accordance with claim 3, wherein R 1 in said general formula (II) is a methoxy group (--OCH 3 group).
Claim 6
Dependent Claim
35 words
An optical recording material in accordance with claim 3, wherein R 1 in said general formula (II) is an alkoxy group (--OC n H 2n+1 group; n≧2) having a carbon number of at least 2.
Claim 7
Dependent Claim
26 words
An optical recording material in accordance with claim 3, wherein R 1 in said general formula (II) is an ethoxy group (--OC 2 H 5 group).
Claim 8
Dependent Claim
26 words
An optical recording material in accordance with claim 3, wherein R 1 in said general formula (II) is a propoxy group (--OC 3 H 7 group).
Claim 9
Dependent Claim
30 words
An optical recording material in accordance with claim 3, containing a photochromic compound being expressed in the following general formula: ##STR27## wherein R 1 is the same as defined above.
Claim 10
Dependent Claim
30 words
An optical recording material in accordance with claim 3, containing a photochromic compound being expressed in the following general formula: ##STR28## wherein R 1 is the same as defined above.
Claim 11
Dependent Claim
21 words
An optical recording material in accordance with claim 3, wherein R 7 in said general formula (II) is a cyano group.
Claim 12
Dependent Claim
30 words
An optical recording material in accordance with claim 10, containing a photochromic compound being expressed in the following general formula: ##STR29## wherein R 1 is the same as defined above.
Claim 13
Dependent Claim
144 words
An optical recording material in accordance with claim 1, containing a photochromic compound being expressed in the following general formula (III): ##STR30## where A represents an oxygen atom or a nitrogen atom, R 1 represents an alkoxy group, and R 2 to R 11 represent atoms or groups selected from a group of a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an alkoxy group, a cyano group, a nitro group, an alkylcarbonyl group, an alkoxycarbonyl group, a perfluoroalkyl group, an aryl group, a cycloalkyl group, an arylcarbonyl group, an aryloxycarbonyl group, a mono- or dialkylaminocarbonyl group, an alkylcarbonyloxy group, an arylcarbonyloxy group, an aryloxy group, an alkoxycarbonyloxy group and an aryloxycarbonyloxy group respectively, while said photochromic material may be bonded with a polymer as a side chain in the position of A or N of N--R 10 in said formula.
Claim 14
Dependent Claim
24 words
An optical recording material in accordance with claim 12, wherein R 1 in said general formula (III) is a methoxy group (--OCH 3 group).
Claim 15
Dependent Claim
35 words
An optical recording material in accordance with claim 12, wherein R 1 in said general formula (III) is an alkoxy group (--OC n H 2n+1 group; n≧2) having a carbon number of at least 2.
Claim 16
Dependent Claim
26 words
An optical recording material in accordance with claim 12, wherein R 1 in said general formula (III) is an ethoxy group (--OC 2 H 5 group).
Claim 17
Dependent Claim
26 words
An optical recording material in accordance with claim 12, wherein R 1 in said general formula (III) is a propoxy group (--OC 3 H 7 group).
Claim 18
Dependent Claim
30 words
An optical recording material in accordance with claim 12, containing a photochromic compound being expressed in the following general formula: ##STR31## wherein R 1 is the same as defined above.
Claim 19
Dependent Claim
25 words
An optical recording material in accordance with claim 17, wherein R 1 in said general formula is an ethoxy group (--OC 2 H 5 group).
Claim 20
Dependent Claim
21 words
An optical recording material in accordance with claim 12, wherein R 7 in said general formula (III) is an alkoxy group.
Claim 21
Dependent Claim
24 words
An optical recording material in accordance with claim 19, wherein R 7 in said general formula (III) is a methoxy group (--OCH 3 group).
Claim 22
Dependent Claim
30 words
An optical recording material in accordance with claim 19, containing a photochromic compound being expressed in the following general formula: ##STR32## wherein R 1 is the same as defined above.
Claim 23
Dependent Claim
25 words
An optical recording material in accordance with claim 21, wherein R 1 in said general formula is an ethoxy group (--OC 2 H 5 group).
Claim 24
Dependent Claim
29 words
An optical recording material in accordance with claim 12, wherein R 10 in said general formula (III) is an alkyl group having a carbon number of at least 4.
Claim 25
Dependent Claim
40 words
An optical recording material in accordance with claim 23, containing a photochromic compound being expressed in the following general formula: ##STR33## wherein R 1 is the same as defined above and R 10 =C n H 2n+1 , where n≧4.
Claim 26
Dependent Claim
34 words
An optical recording material in accordance with claim 24, wherein R 1 and R 10 in said general formula are a methoxy group (--OCH 3 group) and an n-C 4 H 9 group respectively.
Claim 27
Dependent Claim
34 words
An optical recording material in accordance with claim 24, wherein R 1 and R 10 in said general formula are a methoxy group (--OCH 3 group) and an n-C 8 H 17 group respectively.
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