US4576981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition
Assignee: Hoechst AG
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Filing: 1984-04-25
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Granted: 1986-03-18
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Expires: 2004-04-25
Abstract
Abstract The invention relates to an adhesive composition which is suitable for use on a shaped part of polyester, in particular a polyester film, and comprises a copolyester, optionally in combination with light-sensitive substances, fillers and pigments, whereby the copolyester additionally contains at least one copolymer of vinylidene chloride, preferably in a weight ratio of about 3:1 to 1:1. The adhesive composition can furthermore contain cellulose acyl esters, such as low molecular-weight cellulose acetobutyrate or cellulose propionate. Polybasic oxycarboxylic acids and levelling agents can also be present. The adhesive composition can be employed in mixtures with, for example, light-sensitive lacquer systems.
Inventors
- 👤 Manfred Hilger
- 👤 Gunter Hultzsch
- 👤 Roman Keiper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:48
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0053; B; B43; B43L; B43L1/00; B43L1/002; C; C09; C09J; C09J167/00; C09J167/02; G03C; G03C1/00; G03C1/52; G03C1/60; G03C1/76; G03C1/91; G03C1/93; G03C1/95; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/28; C08L2666/34
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
59 words
An adhesive composition suitable for use on a polyester surface, consisting essentially of: a copolyester, said copolyester comprising linear polyesters having molecular weights up to about 20,000 and being the reaction product of diols having from 2 to 8 carbon atoms; and dicarboxylic acids having from 4 to 12 carbon atoms; and at least one copolymer of vinylidene chloride.
Claim 2
Dependent Claim
59 words
An adhesive composition suitable for use on a polyester surface, consisting essentially of: a copolyester, said copolyester comprising linear polyesters having molecular weights up to about 20,000 and being the reaction product of diols having from 2 to 8 carbon atoms; and dicarboxylic acids having from 4 to 12 carbon atoms; and at least one copolymer of vinylidene chloride.
Claim 3
Dependent Claim
16 words
An adhesive composition as in claim 1, wherein the polyester part comprises a biaxially oriented film.
Claim 4
Dependent Claim
25 words
An adhesive composition as in claim 1, wherein the weight ratio of copolyester to the copolymer of vinylidene chloride is between about 3:1 and 1:1.
Claim 5
Dependent Claim
13 words
An adhesive composition as in claim 1, further comprising a cellulose acyl ester.
Claim 6
Dependent Claim
24 words
An adhesive composition as in claim 4, wherein the cellulose acyl ester comprises a low-molecular-weight cellulose acetobutyrate or cellulose propionate or a mixture thereof.
Claim 7
Dependent Claim
32 words
An adhesive composition as in claim 4, wherein the weight ratio of copolyester and copolymer of vinylidene chloride to cellulose acyl ester is within a range of from about 1:1 to 1:100.
Claim 8
Dependent Claim
13 words
An adhesive composition as in claim 1, further comprising a polybasic oxycarboxylic acid.
Claim 9
Dependent Claim
14 words
An adhesive composition as in claim 7, wherein the oxycarboxylic acid comprises citric acid.
Claim 10
Dependent Claim
12 words
An adhesive composition as in claim 1, further comprising a levelling agent.
Claim 11
Dependent Claim
19 words
An adhesive composition as in claim 9, wherein the levelling agent comprises a copolymer having dialkylsiloxane and oxyalkylene units
Claim 12
Dependent Claim
27 words
An adhesive composition as in claim 1, wherein the dry weight of an adhesive layer coated on film is between about 0.1 and 1 g/m 2 .
Claim 13
Dependent Claim
27 words
An adhesive composition as in claim 4, wherein the dry weight of an adhesive layer coated on film is between about 0.5 and 3 g/m 2 .
Claim 14
Dependent Claim
20 words
An adhesive composition as in claim 1, wherein the copolyester comprises iso- or terephthalic acid, and at least one glycol.
Claim 15
Dependent Claim
25 words
An adhesive composition as in claim 1, wherein the copolymer of vinylidene chloride comprises vinylidene chloride and acrylonitrile, in a weight ratio of about 80:20.
Claim 16
Dependent Claim
26 words
An adhesive composition as in claim 7, wherein the polybasic oxycarboxylic acid comprises oxymalonic acid, mesoxalic acid, malic acid, tartaric acid, oxaloacetic acid, or oxymaleic acid.
Claim 17
Dependent Claim
32 words
An adhesive composition as in claim 7, wherein the polybasic oxycarboxylic acid is contained in a weight ratio of up to about 1:1 relative to the copolyester and copolymer of vinylidene chloride.
Claim 18
Dependent Claim
20 words
A drafting layer comprising a polyester support layer and a coating therein of an adhesive composition as in claim 1.
Claim 19
Dependent Claim
22 words
A light-sensitive lacquer system for the production of diazo materials comprising an adhesive composition as in claim 1 and a light-sensitive compound.
Claim 20
Dependent Claim
28 words
A light-sensitive member, comprising a support layer comprised of biaxially oriented polyester film, and a layer thereon of a light sensitive lacquer system as defined in claim 18.
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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) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |