US4543316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting material
Assignee: Hoechst AG
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Filing: 1984-02-21
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Granted: 1985-09-24
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Expires: 2004-02-21
Abstract
Abstract Disclosed is a drafting material comprising a plastic support having on at least one surface thereof an adhesive layer, a layer of pigmented or clear lacquer and a top layer which includes a homo- or copolymer of vinyl acetate and an antistatic agent, wherein the antistatic agent contained in the top layer is a polyamino/polyamide resin modified with an epihalohydrin, preferably epichlorohydrin, the resin being a condensation product of at least one aliphatic dicarboxylic acid or polymeric carboxylic acid and at least one polyamine.
Inventors
- 👤 Klaus Thoese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:02
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; B05D7/04; B05D7/50; B05D7/52; B05D7/54; B44; B44D; B44D3/00; B44D3/18; C; C09; C09K; C09K3/00; C09K3/16; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; B05D5/00; B05D5/04; B05D5/12; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24893; Y10T428/24901; Y10T428/31504; Y10T428/31511; Y10T428/31725; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
60 words
A drafting material for receiving an aqueous ink, comprising: a plastic support; an adhesive layer applied on at least one surface of said support; a layer of lacquer applied on said adhesive layer; and a top layer, comprising a homo- or copolymer of vinyl acetate and an antistatic agent, said antistatic agent comprising a polyamino/polyamide resin modified with an epihalohydrin.
Claim 2
Dependent Claim
60 words
A drafting material for receiving an aqueous ink, comprising: a plastic support; an adhesive layer applied on at least one surface of said support; a layer of lacquer applied on said adhesive layer; and a top layer, comprising a homo- or copolymer of vinyl acetate and an antistatic agent, said antistatic agent comprising a polyamino/polyamide resin modified with an epihalohydrin.
Claim 3
Dependent Claim
22 words
A drafting material as claimed in claim 1, further comprising a layer of light-sensitive material on the reverse surface of the film.
Claim 4
Dependent Claim
18 words
A drafting material as claimed in claim 2, wherein said light-sensitive material layer comprises a two-component diazotype material.
Claim 5
Dependent Claim
16 words
A drafting material as claimed in claim 1, wherein said lacquer layer comprises a pigmented lacquer.
Claim 6
Dependent Claim
16 words
A drafting material as claimed in claim 1, wherein said lacquer layer comprises a clear lacquer.
Claim 7
Dependent Claim
39 words
A drafting material as claimed in claim 1, wherein said resin comprises a condensation product of at least one aliphatic, saturated, dibasic acid having an alkyl chain length of at least three carbon atoms and at least one polyamine.
Claim 8
Dependent Claim
13 words
A drafting material as claimed in claim 1, wherein said epihalohydrin comprises epichlorohydrin.
Claim 9
Dependent Claim
37 words
A drafting material as claimed in claim 7, wherein said top layer comprises an epichlorohydrin-modified polyamio/polyamide resin comprising a condensation product of a dicarboxylic acid with at least 10 carbon atoms and alkylene diamine or alkylene triamine.
Claim 10
Dependent Claim
35 words
A drafting material as claimed in claim 7, wherein said top layer comprises an epichlorohydrin-modified polyamino/polyamide resin comprising a condensation product of a polymeric carboxylic acid having at least 18 carbon atoms and a polyamine.
Claim 11
Dependent Claim
33 words
A drafting material as claimed in claim 7, wherein said top layer comprises from about 30 to 70% by weight of epichlorohydrin-modified polyamino/polyamide resin, relative to the total weight of said top layer.
Claim 12
Dependent Claim
33 words
A drafting material as claimed in claim 10, wherein said top layer comprises from about 30 to 40% by weight of epichlorohydrin-modified polyamino/polyamide resin, relative to the total weight of said top layer.
Claim 13
Dependent Claim
31 words
A drafting material as claimed in claim 1, wherein said copolymer of said top layer comprises about 90% by weight of vinylacetate and about 10% by weight of unsaturated carboxylic acid.
Claim 14
Dependent Claim
18 words
A drafting material as claimed in claim 12, wherein said copolymer comprises about 95% by weight of vinylacetate.
Claim 15
Dependent Claim
19 words
A drafting material as claimed in claim 12, wherein said copolymer comprises about 10% by weight of crotonic acid.
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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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |