US4097289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink with ester additive providing easy wipe off of ink markings
Assignee: Schwan Bleisteft Fabrik Schwanhaeusser and Co
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Filing: 1976-03-15
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Granted: 1978-06-27
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Expires: 1996-03-15
Abstract
Abstract The invention relates to an ink capable of producing writing or marking on a non-absorbent or impermeable surface, which can easily be wiped off. The disadvantages inherent in the known inks are overcome by adding ester compounds of a certain composition to the ink.
Inventors
- 👤 Hans Joachim Hofmann
- 👤 Axel Jankewitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:44
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/16; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
In an ink containing a readily volatile organic solvent, an ink binder based on a natural or synthetic resin or a cellulose derivative and dyestuff distributed in said binder, the improvement for providing for easy wipe off of writing or markings produced from the ink, comprising: the presence in said ink of from 2 to 20% by weight of the ink, of an ester compound of the general formula: ##STR2## wherein one of R 1 and R 2 is a saturated aliphatic hydrocarbon radical having 10 to 22 carbon atoms and the other of which is selected from the group consisting of a cyclopentyl, cyclohexyl and saturated aliphatic hydrocarbon radicals having from 2 to 10 carbon atoms.
Claim 2
Dependent Claim
117 words
In an ink containing a readily volatile organic solvent, an ink binder based on a natural or synthetic resin or a cellulose derivative and dyestuff distributed in said binder, the improvement for providing for easy wipe off of writing or markings produced from the ink, comprising: the presence in said ink of from 2 to 20% by weight of the ink, of an ester compound of the general formula: ##STR2## wherein one of R 1 and R 2 is a saturated aliphatic hydrocarbon radical having 10 to 22 carbon atoms and the other of which is selected from the group consisting of a cyclopentyl, cyclohexyl and saturated aliphatic hydrocarbon radicals having from 2 to 10 carbon atoms.
Claim 3
Dependent Claim
37 words
Ink according to claim 1 wherein R 1 is a saturated aliphatic hydrocarbon radical having from 10 to 22 carbon atoms and R 2 is a saturated aliphatic hydrocarbon radical having from 2 to 10 carbon atoms.
Claim 4
Dependent Claim
22 words
Ink according to claim 1 in which the binder is one or more of celluloseacetobutyrate, ethylcellulose, or a vinyl chloride/vinyl acetate copolymer.
Claim 5
Dependent Claim
30 words
Ink according to claim 1 in which the said ester is one or more of n-butyl stearate, isopropyl myristate, i-decyl stearate, n-hexyl stearate, isononyl stearate, ethyl laurate, or isooctadecyl stearate.
References Cited (Backward Citations)
US3011899A
Cited
US3769045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |