US4261749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic inks suitable for pressure release-type decalcomania
Assignee: Corning Glass Works
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Filing: 1979-09-13
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Granted: 1981-04-14
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Expires: 1999-09-13
Abstract
Abstract The present invention is drawn to the production of thermoplastic inks exhibiting pressure sensitivity at temperatures substantially below their softening points, consisting essentially, in weight percent, of: (a) about 50-80% of a pigmented, vitreous, inorganic flux; (b) about 5-25% of a polyethylene glycol having a molecular weight greater than 200 but less than 950; (c) about 2-20% of a water soluble, cohesive strength imparting polymer having a molecular weight between about 25,000-50,000 selected from the group of polyvinyl pyrrolidone and a water soluble cellulosic ether; and (d) 0-20% of a modifying wax and/or plasticizer.
Inventors
- 👤 Ronald E. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:16
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
A thermoplastic ink suitable for decorating glass, glass-ceramic, and ceramic articles exhibiting pressure sensitivity at temperatures below about 35° C. prepared from a formulation consisting essentially, in weight percent, of: (a) about 50-80% of a vitrifiable, inorganic flux containing up to about 40% by weight inorganic pigments and opacifiers; (b) about 5-25% by weight of a polyoxyethylene ether having a molecular weight greater than 200 but less than 10,000 and having a softening point less than about 35° C.; (c) About 2-20% by weight of a water soluble, cohesive strength imparting polymer having a molecular weight between about 25,000-500,000; and (d) 0-20% by weight of a modifying wax and/or plasticizer compatible with said polyoxyethylene ether and said cohesive strength imparting polymer, being selected from the group consisting of a polyoxyethylene ether wax having a softening point between about 35°-65° C. and a molecular weight between 1000-25,000 and an ester wax having a softening (melt) point below about 65° C.
Claim 2
Dependent Claim
159 words
A thermoplastic ink suitable for decorating glass, glass-ceramic, and ceramic articles exhibiting pressure sensitivity at temperatures below about 35° C. prepared from a formulation consisting essentially, in weight percent, of: (a) about 50-80% of a vitrifiable, inorganic flux containing up to about 40% by weight inorganic pigments and opacifiers; (b) about 5-25% by weight of a polyoxyethylene ether having a molecular weight greater than 200 but less than 10,000 and having a softening point less than about 35° C.; (c) About 2-20% by weight of a water soluble, cohesive strength imparting polymer having a molecular weight between about 25,000-500,000; and (d) 0-20% by weight of a modifying wax and/or plasticizer compatible with said polyoxyethylene ether and said cohesive strength imparting polymer, being selected from the group consisting of a polyoxyethylene ether wax having a softening point between about 35°-65° C. and a molecular weight between 1000-25,000 and an ester wax having a softening (melt) point below about 65° C.
Claim 3
Dependent Claim
26 words
A thermoplastic ink according to claim 1 wherein said vitrifiable, inorganic flux is present in particulate form, the particles having diameters less than about 20 microns.
Claim 4
Dependent Claim
15 words
A thermoplastic ink according to claim 1 wherein said water soluble polymer is polyvinyl pyrrolidone.
Claim 5
Dependent Claim
17 words
A thermoplastic ink according to claim 1 wherein said polyoxyalkylene ether wax is a polyethylene glycol wax.
Claim 6
Dependent Claim
33 words
A thermoplastic ink according to claim 1 wherein said ester wax is selected from the group consisting of glycerides, fatty acid and fatty alcohol esters, dicarboxylic esters, polyol esters, and polyalkylene glycol esters.
Claim 7
Dependent Claim
14 words
A thermoplastic ink according to claim 5 wherein said glyceride is an acetylated monoglyceride.
Claim 8
Dependent Claim
26 words
A thermoplastic ink according to claim 1 wherein said polyoxyalkylene ether is a polyethylene glycol having a molecular weight greater than 200 but less than 950.
Claim 9
Dependent Claim
23 words
A thermoplastic ink according to claim 1 wherein said polyoxyalkylene ether is selected from the group consisting of polypropylene glycol and methoxypolyethylene glycol.
References Cited (Backward Citations)
US3993492A
Cited
US4014833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |