Patent US4608295A successfully refreshed from Google Patents.
US4608295A
Expired / Lapsed
US
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Paper support
Assignee: Hoechst AG
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Filing: 1984-10-11
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Granted: 1986-08-26
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Expires: 2004-10-11
Abstract
Abstract Disclosed is a paper support which is suitable for use as a base for printed layers and/or varnish layers which are applied to one side of the support, in particular for slide-off decals. The support comprises a paper which is free from aluminum ions, particularly free from aluminum sulfate, and has a covering coating comprising fluoroalkylphosphate or perfluoroalkylphosphate and, optionally, a thickening agent, applied to its reverse side. Any aluminum ions which may possibly be present are rendered non-reactive by complexing.
Inventors
- 👤 Henner Drum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:29
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/16; B44C1/165; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/2486; Y10T428/24934; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
74 words
A paper support which is suitable for use as a base for printed layers and/or varnish layers which are applied to one side of the support, in particular for slide-off decals, comprising: a layer of an essentially aluminum ion-free paper; a barrier layer applied to the obverse surface of said paper; a release layer applied to said barrier layer; and a covering coating comprising a fluoroalkylphosphate applied to the reverse surface of said paper.
Claim 2
Dependent Claim
74 words
A paper support which is suitable for use as a base for printed layers and/or varnish layers which are applied to one side of the support, in particular for slide-off decals, comprising: a layer of an essentially aluminum ion-free paper; a barrier layer applied to the obverse surface of said paper; a release layer applied to said barrier layer; and a covering coating comprising a fluoroalkylphosphate applied to the reverse surface of said paper.
Claim 3
Dependent Claim
28 words
A slide-off decal, comprising a varnish masking film containing an image applied to a paper support, wherein said support comprises a paper support as defined in claim 1.
Claim 4
Dependent Claim
35 words
A paper support as claimed in claim 1, wherein said fluoroalkylphosphate is selected from fluorinated alkyl esters of orthophosphoric acid and alkali metal phosphates, having from 1 to 4 carbon atoms in the alkyl group.
Claim 5
Dependent Claim
27 words
A paper support as claimed in claim 1, wherein said covering coating comprises a perfluoroalkylphosphate ester, having from 1 to 4 carbon atoms in the alkyl group.
Claim 6
Dependent Claim
25 words
A paper support as claimed in claim 1, wherein said paper comprises an essentially aluminum sulfate-free paper and said covering coating comprises a perfluoroethylphosphate ester.
Claim 7
Dependent Claim
18 words
A paper support as claimed in claim 1, wherein said paper comprises a complexing-promoted, essentially aluminum ion-free paper.
Claim 8
Dependent Claim
25 words
A paper support as claimed in claim 1, wherein said covering coating is present in an amount from about 0.05 to 0.5 g/m 2 .
Claim 9
Dependent Claim
27 words
A paper support as claimed in claim 1, wherein said covering coating is produced from a solution comprising less than about 2% by weight of said fluoroalkylphosphate.
Claim 10
Dependent Claim
22 words
A paper support as claimed in claim 8, wherein said solution comprises from about 0.3 to 1% by weight of said fluoroalkylphosphate.
Claim 11
Dependent Claim
17 words
A paper support as claimed in claim 1, wherein said covering coating further comprises a thickening agent.
Claim 12
Dependent Claim
16 words
A paper support as claimed in claim 10, wherein said thickening agent comprises a carboxyvinyl polymer.
Claim 13
Dependent Claim
15 words
A paper support as claimed in claim 10, wherein said thickening agent comprises a polyacrylate.
Claim 14
Dependent Claim
22 words
A paper support as claimed in claim 10, wherein said thickening agent comprises from about 0.05-0.2% by weight of said covering coating.
Claim 15
Dependent Claim
22 words
A paper support as claimed in claim 13, wherein said thickening agent comprises from about 0.08-0.1% by weight of said covering coating.
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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |