US4814256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical recording material
Assignee: BASF SE
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Filing: 1987-07-02
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Granted: 1989-03-21
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Expires: 2007-07-02
Abstract
Abstract An optical recording material possesses a light-absorbing layer on a base, the said layer containing one or more colorants of the formula (I) ##STR1## where M is two hydrogen atoms or Fe, Cu, Co, Ni, Pb, Cr, Mn, VO, TiO, ZrO, Nb, Ta, Pd, SiCl 2 , Sn or SnX 2 , X is Cl, Br or I, and A is a divalent radical of an unsaturated, unsubstituted or substituted carbocyclic ring system. The colorants (I) present on the novel recording materials have a high absorption in the range from 650 to 850 nm and accordingly can be written on and read by means of a laser. The colorants can be applied as 20-1000 nm layers on a suitable base by vapor deposition or as a solution or dispersion, with or without the addition of a polymeric binder, by a conventional method. The layers are very stable to atmospheric influences and daylight.
Inventors
- 👤 Reinhard Aldag
- 👤 Peter Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:52
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/246; G11B7/248; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
An optical recording material capable of being written on and read by means of a laser, which consists of a base and a light-absorbing layer and in which the said layer contains one or more colorants of the formula ##STR8## where M is two hydrogen atoms, or Fe, Cu, Co, Ni, Cr, Mn, Pb, VO, TiO, ZrO, Nb, Ta, Pd, SiCl 2 , Sn or SNX 2 , X is Cl, Br or I, and A is a radical of the formula ##STR9## where R 1 to R 8 independently of one another are each hydrogen, C 1 -C 12 -alkyl, trifluoromethyl, C 1 -C 12 -alkylthio, phenoxy, phenylthio, fluorine, chlorine, bromine, nitro, amino, mono-C 1 -C 12 -alkylamino, di-C 1 -C 12 -alkylamino, --SiR 3 or --SnR 3 , where R is C 1 -C 8 -alkyl, and R 9 , R 10 , R 11 and R 12 independently of one another are each hydrogen, C 1 -C 12 -alkyl, unsubstituted or alkoxy-substituted phenyl, C 1 -C 12 -alkoxy, fluorine, chlorine, bromine, amino, mono-C 1 -C 12 -alkylamino or di-C 1 -C 12 -alkylamino.
Claim 2
Dependent Claim
186 words
An optical recording material capable of being written on and read by means of a laser, which consists of a base and a light-absorbing layer and in which the said layer contains one or more colorants of the formula ##STR8## where M is two hydrogen atoms, or Fe, Cu, Co, Ni, Cr, Mn, Pb, VO, TiO, ZrO, Nb, Ta, Pd, SiCl 2 , Sn or SNX 2 , X is Cl, Br or I, and A is a radical of the formula ##STR9## where R 1 to R 8 independently of one another are each hydrogen, C 1 -C 12 -alkyl, trifluoromethyl, C 1 -C 12 -alkylthio, phenoxy, phenylthio, fluorine, chlorine, bromine, nitro, amino, mono-C 1 -C 12 -alkylamino, di-C 1 -C 12 -alkylamino, --SiR 3 or --SnR 3 , where R is C 1 -C 8 -alkyl, and R 9 , R 10 , R 11 and R 12 independently of one another are each hydrogen, C 1 -C 12 -alkyl, unsubstituted or alkoxy-substituted phenyl, C 1 -C 12 -alkoxy, fluorine, chlorine, bromine, amino, mono-C 1 -C 12 -alkylamino or di-C 1 -C 12 -alkylamino.
Claim 3
Dependent Claim
21 words
An optical recording material as claimed in claim 1, wherein M is VO, TiO, ZrO, Pb, Mn, Co, Cu or Sn.
Claim 4
Dependent Claim
98 words
An optical recording material as claimed in claim 1, wherein the substituents R 1 , R 2 , R 3 and R 4 in (II) are in positions 3, 4, 3' and 4', the substituents R 5 , R 6 , R 7 and R 8 in (III) are in positions 2, 3, 6 and 7, the substituents R 9 , R 10 , R 11 and R 12 in (IV) are in positions 3, 4, 3' and 4' and R 11 and R 12 in (V) can be in positions 1, 4, 6, 7, 10 or 11.
Claim 5
Dependent Claim
97 words
An optical recording material as claimed in claim 2, wherein the substituents R 1 , R 2 , R 3 and R 4 in (II) are in positions 3, 4, 3' and 4', the substituents R 5 , R 6 , R 7 and R 8 in (III) are in positions 2, 3, 6 and 7, the substituents R 9 , R 10 , R 11 and R 12 in (IV) are in positions 3, 4, 3' and 4', and R 11 and R 12 in (V) can be positions 1, 4, 6, 7, 10 or 11.
Claim 6
Dependent Claim
102 words
An optical recording material capable of being written on and read by means of a laser, which consists of a base and a light-absorbing layer and in which the said layer contains one or more colorants of the formula ##STR10## where M' is VO, TiO, Mn or Pb, R 1 and R 3 are each hydrogen, butyl, butoxy, dimethylamino or dibutylamino, R 5 is hydrogen or butyl, R 6 and R 7 are each hydrogen, butyl, butoxy or dibutylamino, R 9 and R 12 are each hydrogen or ethoxy and R 10 and R 11 are each hydrogen, butyl, ethoxy or pentyloxy.
Claim 7
Dependent Claim
102 words
An optical recording material capable of being written on and read by means of a laser, which consists of a base and a light-absorbing layer and in which the said layer contains one or more colorants of the formula ##STR10## where M' is VO, TiO, Mn or Pb, R 1 and R 3 are each hydrogen, butyl, butoxy, dimethylamino or dibutylamino, R 5 is hydrogen or butyl, R 6 and R 7 are each hydrogen, butyl, butoxy or dibutylamino, R 9 and R 12 are each hydrogen or ethoxy and R 10 and R 11 are each hydrogen, butyl, ethoxy or pentyloxy.
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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) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |