EP0344891A2
Expired / Lapsed
EP
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Tetraazaporphin, process for producing the same, as well as optical recording media using the same and production processes thereof
Assignee: Resonac Corp
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Filing: 1989-04-05
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Granted: —
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Expires: 2009-04-05
Abstract
Abstract Special tetraazaporphins containing Si, Ge or Sn as the central metal are useful for forming a recording layer in an optical recording medium.
Inventors
- 👤 Seiji Tai
- 👤 Nobuyuki Hayashi
- 👤 Koichi Kamijima
- 👤 Mitsuo Katayose
- 👤 Takayuki Akimoto
- 👤 Hideo Hagiwara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 03:46
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/22; G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; C09; C09B; C09B47/00; C09B47/04; C09B47/08; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
92 words
A tetraazaporphin represented by the formula: wherein M is Si, Ge or Sn; Y is an aryloxy group, an alkoxy group, a trialkylsilxy group, a triarylsiloxy group, a trialkoxysiloxy group, a triaryloxysiloxy group, a trityloxy group or an acyloxy group, and two Y's may be the same or different; A 1 , A 2 , A3 and A 4 are independently an aromatic ring which may have one or more organic substituents, and at least one of A 1 , A 2 , A3 and A 4 is a nitrogen-containing aromatic ring.
Claim 2
Dependent Claim
92 words
A tetraazaporphin represented by the formula: wherein M is Si, Ge or Sn; Y is an aryloxy group, an alkoxy group, a trialkylsilxy group, a triarylsiloxy group, a trialkoxysiloxy group, a triaryloxysiloxy group, a trityloxy group or an acyloxy group, and two Y's may be the same or different; A 1 , A 2 , A3 and A 4 are independently an aromatic ring which may have one or more organic substituents, and at least one of A 1 , A 2 , A3 and A 4 is a nitrogen-containing aromatic ring.
Claim 3
Dependent Claim
12 words
A tetraazaporphin according to claim 1, wherein M is Si or Ge.
Claim 4
Dependent Claim
14 words
A tetraazaporphin according to claim 1 or 2, wherein two Y's are trialkylsiloxy groups.
Claim 5
Dependent Claim
21 words
A tetraazaporphin according to claim 1, 2 or 3 wherein A', A 2 , A3 and A4 are nitrogen-containing aromatic rings.
Claim 6
Dependent Claim
26 words
A tetraazaporphin according to claim 1, 2 or 3 wherein all the A', A 2 , A3 and A 4 are the same nitrogen-containing aromatic rings.
Claim 7
Dependent Claim
26 words
A tetraazaporphin according to Claim 4, wherein A', A 2 , A3 and A 4 are nitrogen-containing aromatic rings selected from the group consisting of and
Claim 8
Dependent Claim
25 words
A tetraazaporphin according to Claim 4, wherein A', A 2 , A3 and A 4 are nitrogen-containing aromatic rings selected from the group consisting of
Claim 9
Dependent Claim
157 words
A tetraazaporphin according to any one of claims 1 to 7 wherein the A', A 2 , A3 and A 4 are aromatic rings bound to one or more organic substituents selected from the group consisting of - R 1 , - O R 2 , - S i R 3 R 4 R 5 , - S O 2 N R 6 R 7 , - C O R 8 , - C O O R 9 , - O · C O R 1 0 , - C O · N H R 1 1 , N R 1 2 R 1 3 , - S R 1 4 , - S O 2 R 1 5 , and - X 1 , wherein R 1 to R 15 are independently a hydrogen atom, an alkyl group which may have one or more substituents, or an aryl group; and X 1 is a halogen atom.
Claim 10
Dependent Claim
174 words
A process for producing a tetraazaporphin represented by the formula: wherein M, Y, A 1 , A 2 , A3 and A 4 are as defined in any one of claims 1 to 8 which comprises reacting a compound of formula: wherein M, A 1 , A 2 , A3 and A 4 are as hereinbefore defined, with one member selected from the group consisting of a chlorosilane of the formula: (R 16 ) 3 SiCl (III) wherein R' 6 is an alkyl group, an aryl group, an alkoxy group or an aryloxy group, a silanol of the formula: (R 17 ) 3 SiOH (IV) wherein R' 7 is an alkyl group, an aryl group, an alkoxy group or an aryloxy group, an alcohol of the formula: R 18 OH (V) wherein R' 8 is an alkyl group or an aryl group, and a compound of the formula: R 19 CO·X 2 (VI) wherein R' 9 is an alkyl group; and X 2 is a halogen atom, a hydroxyl group or an acyloxy group.
Claim 11
Dependent Claim
31 words
A process according to claim 9, wherein R' 6 and R 17 in the formulae (III) and (IV) are alkyl groups, and two Y's in the formula (I) are trialkylsiloxy groups.
Claim 12
Dependent Claim
28 words
An optical recording medium comprising a substrate and formed thereon a recording layer made of mainly a tetraazaporphin as claimed in any one of claims 1 to 8.
Claim 13
Dependent Claim
35 words
A process for producing an optical recording medium which comprises coating an organic solution dissolving a tetraazaporphin as claimed in any one of claims 1 to 8 on a substrate to form a recording layer.
References Cited (Backward Citations)
No citation records indexed.
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