Patent US5208210A successfully refreshed from Google Patents.
US5208210A
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Thermal transfer printing
Assignee: BASF SE
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Filing: 1991-09-23
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Granted: 1993-05-04
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Expires: 2011-09-23
Abstract
Abstract Anthraquinone dyes I useful for thermal transfer printing have the formula <IMAGE> I where R is alkyl, alkoxyalkyl, aryloxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl or alkoxycarbonylalkyl, which may each contain up to 20 carbon atoms and whose carbon chains may be interrupted by form one to four oxygen atoms in ether function, or is C5-C8-cycloalkyl or phenyl which may each be substituted by C1-C4-alkyl or C1-C4-alkoxy.
Inventors
- 👤 Ruediger Sens
- 👤 Karl-Heinz Etzbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:19
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/3852; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
In a process for thermotransfer printing, wherein the improvement comprises using as the transfer dye an anthraquinone dye of the formula I ##STR5## where R is alkyl, alkoxyalkyl, aryloxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl or alkoxycarbonylalkyl, which may each contain up to 20 carbon atoms and whose carbon chains may be interrupted by from one to four oxygen atoms in ether function, or is C 5 -C 8 -cycloalkyl or phenyl which may each be substituted by C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy.
Claim 2
Dependent Claim
85 words
In a process for thermotransfer printing, wherein the improvement comprises using as the transfer dye an anthraquinone dye of the formula I ##STR5## where R is alkyl, alkoxyalkyl, aryloxyalkyl, alkanoyloxyalkyl, alkoxycarbonyloxyalkyl or alkoxycarbonylalkyl, which may each contain up to 20 carbon atoms and whose carbon chains may be interrupted by from one to four oxygen atoms in ether function, or is C 5 -C 8 -cycloalkyl or phenyl which may each be substituted by C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy.
Claim 3
Dependent Claim
22 words
In a process as claimed in claim 1, wherein one or more anthraquinone dyes of the formula I are transferred by diffusion.
Claim 4
Dependent Claim
33 words
In a process as claimed in claim 2, wherein R in the formula I of the anthraquinone dye used is C 1 -C 12 -alkyl, phenyl or C 1 -C 4 -alkyl-substituted phenyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |