US3857720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysiloxane coated transfer base
Assignee: WTA Inc
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Filing: 1973-02-08
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Granted: 1974-12-31
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Expires: 1993-02-08
Abstract
Abstract A transfer medium comprising a base having a transferable coating composition thereon. The transferable composition comprises about 3 to 40 percent, by weight, of polysiloxane rubber gum; about 10 to 60 percent, by weight, of a polysiloxane resin; about 1 to 65 percent, by weight, of a sensible material; about 1/2 to 10 percent, by weight, of a wax; and about 1 to 10 percent, by weight, of a release and adhesion enhancer. The release and adhesion enhancer is in finely-divided, particulate form and the entire composition is coated substantially homogeneously in a single layer.
Inventors
- 👤 C Fellows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:05
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
A TRANSFER MEDIUM COMPRISING A BASE HAVING A TRANSFERABLE COATING COMPOSITION IN A SINGLE LAYER THEREON; SAID COATING COMPOSITION COMPRISING A SUBSTANTIALLY HOMOGENEOUS MIXTURE OF ABOUT 3 TO 40 PERCENT BY WEIGHT OF A POLYSILOXANE RUBBER GUM HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 200,000; TO 1,00,000; ABOUT 1 TO 65 PERCENT BY WEIGHT OF A POLYSILOXANE RESIN HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 300 TO 100,000; ABOUT 1 TO 65 PERCENT BY WEIGHT OF A SENSIBLE MATERIAL; ABOUT 1/2 TO 10 PERCENT BY WEIGHT OF A WAX; AND ABOUT 1 TO 10 PERCENT BY WEIGHT OF A RELEASE AND ADHESION ENHANCING MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND COPOLYMERS OF POLYETHYLENE HAVING MOLECULAR WEIGHT OF ABOUT 1,00 TO 12,000, SOFTENING POINT OF ABOUT 180 TO 270* FAHRENHEIT, AND BEING PRESENT AS A PARTICULATE, FINELY-DIVIDED SOLID 0.1 TO 5.0 MICRONS IN AVERAGE DIAMETER.
Claim 2
Dependent Claim
146 words
A TRANSFER MEDIUM COMPRISING A BASE HAVING A TRANSFERABLE COATING COMPOSITION IN A SINGLE LAYER THEREON; SAID COATING COMPOSITION COMPRISING A SUBSTANTIALLY HOMOGENEOUS MIXTURE OF ABOUT 3 TO 40 PERCENT BY WEIGHT OF A POLYSILOXANE RUBBER GUM HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 200,000; TO 1,00,000; ABOUT 1 TO 65 PERCENT BY WEIGHT OF A POLYSILOXANE RESIN HAVING A MOLECULAR WEIGHT RANGING FROM ABOUT 300 TO 100,000; ABOUT 1 TO 65 PERCENT BY WEIGHT OF A SENSIBLE MATERIAL; ABOUT 1/2 TO 10 PERCENT BY WEIGHT OF A WAX; AND ABOUT 1 TO 10 PERCENT BY WEIGHT OF A RELEASE AND ADHESION ENHANCING MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE AND COPOLYMERS OF POLYETHYLENE HAVING MOLECULAR WEIGHT OF ABOUT 1,00 TO 12,000, SOFTENING POINT OF ABOUT 180 TO 270* FAHRENHEIT, AND BEING PRESENT AS A PARTICULATE, FINELY-DIVIDED SOLID 0.1 TO 5.0 MICRONS IN AVERAGE DIAMETER.
Claim 3
Dependent Claim
39 words
The transfer medium of claim 1 wherein the polysiloxane rubber gum has a molecular weight ranging from about 300,000 to 700,000 and is present in the coating composition in an amount of about 15 to 25 percent by weight.
Claim 4
Dependent Claim
27 words
The transfer medium of claim 1 wherein the polysiloxane resin is present in the coating composition in an amount of about 15 to 25 percent by weight.
Claim 5
Dependent Claim
35 words
The transfer medium of claim 1 wherein the copolymers of polyethylene are poly(ethylene-co-vinylacetate); poly(ethylene-co-vinylchloride); poly(ethylene-co-propylene); poly(ethylene-co-acrylate); poly(ethylene-co-alkylacrylate) wherein alkyl is less than five carbon atoms; or poly(ethylene-co-alkylmethacrylate) wherein alkyl is less than five carbon atoms.
Claim 6
Dependent Claim
17 words
The transfer medium of claim 1 wherein said sensible material comprises a magnetic metal or oxide thereof.
Claim 7
Dependent Claim
27 words
The transfer medium of claim 1 wherein the sensitive material is present in the coating composition in an amount of about 2 to 20 percent by weight.
Claim 8
Dependent Claim
14 words
The transfer medium of claim 1 wherein said base is a thin polymeric material.
Claim 9
Dependent Claim
15 words
The transfer medium of claim 7 wherein said base is a film of polyethylene terephthalate.
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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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |