US4917989A
Expired / Lapsed
US
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Optical recording medium which has a reflector layer containing a silicon-phthalocyanine derivative
Assignee: BASF SE
•
Filing: 1988-05-17
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Granted: 1990-04-17
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Expires: 2008-05-17
Abstract
Abstract An optical recording medium contains a transparent base, a dye-containing layer which is sensitive to laser light and a reflector layer which contains a silicon-phthalocyanine derivative of the formula ##STR1## where R 1 is hydrogen, alkyl, alkoxy, halogen or trialkylsilyl, n is 1, 2, 3 or 4 and A and B are identical or different and independently of one another are each alkyl, halogen or unsubstituted or substituted alkoxy or trialkylsilyloxy.
Inventors
- 👤 Bernhard Albert
- 👤 Peter Hauser
- 👤 Michael Acker
- 👤 Wolfgang Schrott
- 👤 Gerhard Wagenblast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:49
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/252; G11B7/258; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
201 words
An optical recording medium capable of having information recorded thereon by a laser beam in the form of optically detectable marks, which comprises a transparent base, a dye-containing layer which is sensitive to laser light and a reflector layer which contains a silicon-phthalocyanine derivative of the formula: ##STR19## wherein R 1 is bonded to the phthalocyanine radical and is hydrogen, C 1 -C 12 alkyl, C 1 -C 12 -alkoxy, halogen or a radical of the formula: ##STR20## wherein R 2 , R 3 and R 4 are identical or different and independently of one another are each C 1 -C 5 -alkyl, n is 1,2, 3 or 4 and A and B are identical or different and independently of one another are each C 1 -C 12 -alkyl, halogen or a radical of the formula --OR 5 , in which R 5 is C 1 -C 12 -alkyl which is optionally interrupted by one or more oxygen atoms or C 1 -C 4 -alkylimino groups or substituted by a 5-membered or 6-membered saturated heterocyclic radical or a combination thereof, or is a radical of the formula: ##STR21## wherein R 2 , R 3 and R 4 are as defined above.
Claim 2
Dependent Claim
201 words
An optical recording medium capable of having information recorded thereon by a laser beam in the form of optically detectable marks, which comprises a transparent base, a dye-containing layer which is sensitive to laser light and a reflector layer which contains a silicon-phthalocyanine derivative of the formula: ##STR19## wherein R 1 is bonded to the phthalocyanine radical and is hydrogen, C 1 -C 12 alkyl, C 1 -C 12 -alkoxy, halogen or a radical of the formula: ##STR20## wherein R 2 , R 3 and R 4 are identical or different and independently of one another are each C 1 -C 5 -alkyl, n is 1,2, 3 or 4 and A and B are identical or different and independently of one another are each C 1 -C 12 -alkyl, halogen or a radical of the formula --OR 5 , in which R 5 is C 1 -C 12 -alkyl which is optionally interrupted by one or more oxygen atoms or C 1 -C 4 -alkylimino groups or substituted by a 5-membered or 6-membered saturated heterocyclic radical or a combination thereof, or is a radical of the formula: ##STR21## wherein R 2 , R 3 and R 4 are as defined above.
Claim 3
Dependent Claim
93 words
The optical recording medium as claimed in claim 1, wherein R 1 is hydrogen, C 2 -C 8 -alkoxy, fluoride, chlorine or trimethylsilyl, n is 4 and A and B independently of one another are each C 1 -C 8 -alkyl, fluorine, chlorine or a radical of the formula OR 5 , in which R 5 is C 1 -C 8 -alkyl which is optionally interrupted by one or more oxygen atoms or C 1 -C 4 -alkylimino groups or substituted by a 5-membered or 6-membered saturated heterocyclic radical or a combination thereof.
Claim 4
Dependent Claim
37 words
The optical recording medium as claimed in claim 1, wherein the reflector layer containing a silicon-phthalocyanine derivative of the formula I is located between the transparent base and the dye-containing layer which is sensitive to laser light.
Claim 5
Dependent Claim
23 words
The optical recording medium as claimed in claim 1, wherein the dye-containing layer which is sensitive to laser light additionally contains a binder.
Claim 6
Dependent Claim
31 words
The optical recording medium as claimed in claim 1, wherein said saturated heterocyclic radical is selected from the group consisting of pyrrolidino, piperidino, morpholino, piperazino and N-(C 1 -C 4 -alkyl)piperazino.
Claim 7
Dependent Claim
48 words
The optical recording medium as claimed in claim 1, wherein A and B are each selected from the group consisting of 2-methoxyethoxy, 2-ethoxyethoxy, 2- or 3-ethoxypropoxy, 3,6-dioxaheptyloxy, 3,6-dioxaoctyloxy, 3,6,9-trioxadecyloxy, 2-dimethylaminoethoxy, 2-diethylaminoethoxy, 2-dipropylaminoethoxy, 2-diisopropylaminoethoxy, 2-dibutylaminoethoxy, 5-dimethylamino-3-oxapentyloxy, 2-dimethylaminopropoxy, 3-dimethylaminopropoxy, 3-dimethylamino-prop-2-yloxy, 4-dimethylaminobutoxy, 3-dimethylamino-2,2-dimethylpropoxy, 6-dimethylaminohexyloxy, 2-pyrrolidinoethoxy, 2-piperidinoethoxy, 2-morpholinoethoxy, 2-piperazinoethoxy, 2-(N-methylpiperidino)-ethoxy and 3-(N-ethylpiperidino)-propoxy.
Claim 8
Dependent Claim
82 words
The optical recording medium as claimed in claim 1, wherein R 1 is hydrogen, C 2 -C 6 -alkyl, C 1 -C 8 -alkoxy, fluorine, chlorine or trimethylsilyl; n is 4; and A and B are each C 1 -C 8 -alkyl, fluorine, chlorine or said radical --OR 5 , wherein R 5 is C 1 -C 8 -alkyl, which is optionally interrupted by one or more oxygen atoms or C 1 -C 4 -alkylimino groups or substituted by said heterocyclic radical.
Claim 9
Dependent Claim
23 words
The optical recording medium as claimed in claim 1, wherein said transparent base is a disk or sheet made of glass or plastic.
Claim 10
Dependent Claim
39 words
The optical recording medium as claimed in claim 1, wherein said dye-containing layer contains a dye selected from the group consisting of phthalocyanines, dithiolene complexes, chromium, cobalt or manganese complexes with dihydroxyazo ligands, methines, indigos, anthraquinones, naphthoquinones and triquinone-cyclopropanes.
Claim 11
Dependent Claim
31 words
The optical recording medium as claimed in claim 4, wherein said binder is present in the amount of 35 to 85% by weight, based on the weight of the dye-containing layer.
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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) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |