Patent US5143761A successfully refreshed from Google Patents.
US5143761A
Expired / Lapsed
US
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Thermoplastic fluoropolymer adhesive composition
Assignee: Tyco International Ltd Bermuda
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Filing: 1991-04-17
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Granted: 1992-09-01
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Expires: 2011-04-17
Abstract
Abstract A thermoplastic fluoropolymer adhesive composition containing a thermoplastic fluoropolymer, an elastomeric fluoropolymer, a thermoplastic ethylene copolymer and a tackifier, in which the combined amount of ethylene copolymer and tackifier is less than about 30% by weight (based on the weight of the four components) and the ratio of ethylene copolymer is less than about 2:1, has improved sealing performance and flame resistance than similar compositions containing greater amounts of ethylene copolymer and tackifier. The composition is particularly useful for sealing surfaces of uncrosslinked ethylene-tetrafluoroethylene copolymers.
Inventors
- 👤 Achilles Chiotis
- 👤 Pravin Soni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:09
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/70; H01R4/72; C; C09; C09J; C09J127/00; C09J127/02; C09J127/12; C09J127/16; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
144 words
An adhesive composition comprising: (a) about 40 to about 70% by weight of a thermoplastic fluoropolymer which is a thermoplastic copolymer of vinylidene fluoride and at least one other monomer; (b) about 5 to about 25% by weight of an elastomeric fluoropolymer; (c) about 5 to about 25% by weight of a thermoplastic ethylene copolymer comprising at least 50 mole % of units derived from ethylene and at least 5 mole % of units derived from at least one unsaturated comonomer containing at least one polar group; and (d) about 5 to about 20% by weight of a tackifier; with the proviso that the combined amounts of (c) and (d) are less than about 30% by weight and that the ratio of (c) to (d) is less than about 2:1, all percentages by weight being based on the total weight of the four components.
Claim 2
Dependent Claim
144 words
An adhesive composition comprising: (a) about 40 to about 70% by weight of a thermoplastic fluoropolymer which is a thermoplastic copolymer of vinylidene fluoride and at least one other monomer; (b) about 5 to about 25% by weight of an elastomeric fluoropolymer; (c) about 5 to about 25% by weight of a thermoplastic ethylene copolymer comprising at least 50 mole % of units derived from ethylene and at least 5 mole % of units derived from at least one unsaturated comonomer containing at least one polar group; and (d) about 5 to about 20% by weight of a tackifier; with the proviso that the combined amounts of (c) and (d) are less than about 30% by weight and that the ratio of (c) to (d) is less than about 2:1, all percentages by weight being based on the total weight of the four components.
Claim 3
Dependent Claim
32 words
An adhesive composition in accordance with claim 1, wherein (a) is a mixture of a thermoplastic terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene and a thermoplastic copolymer of vinylidene fluoride and tetrafluoroethylene.
Claim 4
Dependent Claim
23 words
An adhesive composition in accordance with claim 1, wherein (b) is an elastomeric copolymer of vinylidene fluoride and at least one other monomer.
Claim 5
Dependent Claim
19 words
An adhesive composition in accordance with claim 3, wherein (b) is an elastomeric copolymer of vinylidene fluoride and hexafluoropropylene.
Claim 6
Dependent Claim
16 words
An adhesive composition in accordance with claim 1, wherein (c) is an ethylene vinyl acetate copolymer.
Claim 7
Dependent Claim
18 words
An adhesive composition in accordance with claim 1, wherein (d) is a copolymer of vinyltoluene and α-methyl styrene.
Claim 8
Dependent Claim
159 words
A heat-recoverable article having a coating on at least a portion of a surface thereof, an adhesive composition comprising: (a) about 40 to about 70% by weight of a thermoplastic fluoropolymer which is a thermoplastic copolymer of vinylidene fluoride and at least one other monomer; (b) about 5 to about 25% by weight of an elastomeric fluoropolymer; (c) about 5 to about 25% by weight of a thermoplastic ethylene copolymer comprising at least 50 mole % of units derived from ethylene and at least 5 mole % of units derived from at least one unsaturated comonomer containing at least one polar group; and (d) about 5 to about 20% by weight of a tackifier; with the proviso that the combined amounts of (c) and (d) are less than about 30% by weight and that the ratio of (c) to (d) is less than about 2:1, all percentages by weight being based on the total weight of the four components.
Claim 9
Dependent Claim
159 words
A heat-recoverable article having a coating on at least a portion of a surface thereof, an adhesive composition comprising: (a) about 40 to about 70% by weight of a thermoplastic fluoropolymer which is a thermoplastic copolymer of vinylidene fluoride and at least one other monomer; (b) about 5 to about 25% by weight of an elastomeric fluoropolymer; (c) about 5 to about 25% by weight of a thermoplastic ethylene copolymer comprising at least 50 mole % of units derived from ethylene and at least 5 mole % of units derived from at least one unsaturated comonomer containing at least one polar group; and (d) about 5 to about 20% by weight of a tackifier; with the proviso that the combined amounts of (c) and (d) are less than about 30% by weight and that the ratio of (c) to (d) is less than about 2:1, all percentages by weight being based on the total weight of the four components.
Claim 10
Dependent Claim
32 words
A heat-recoverable article in accordance with claim 7, wherein (a) is a mixture of a thermoplastic terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene and a thermoplastic copolymer of vinylidene fluoride and tetrafluoroethylene.
Claim 11
Dependent Claim
23 words
A heat-recoverable article in accordance with claim 7, wherein (b) is an elastomeric copolymer of vinylidene fluoride and at least one other monomer.
Claim 12
Dependent Claim
19 words
A heat-recoverable article in accordance with claim 9, wherein (b) is an elastomeric copolymer of vinylidene fluoride and hexafluoropropylene.
Claim 13
Dependent Claim
16 words
A heat-recoverable article in accordance with claim 7, wherein (c) is an ethylene vinyl acetate copolymer.
Claim 14
Dependent Claim
18 words
A heat-recoverable article in accordance with claim 7, wherein (d) is a copolymer of vinyltoluene and α-methyl styrene.
Claim 15
Dependent Claim
29 words
A heat-recoverable article in accordance with claim 7, which further comprises solder, said solder being in contact with at least a portion of a surface of the heat-recoverable article.
Claim 16
Dependent Claim
49 words
A heat-recoverable article in accordance with claim 13, wherein said article is a heat-shrinkable tubular article which has two open ends, contains a solder insert in a central region thereof and said adhesive is coated on said article between said solder insert and each open end of said article.
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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) | 1995-09-01 | 1996-03-02 | 1996-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-01 | 2000-03-02 | 2000-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-01 | 2004-03-02 | 2004-09-01 | $7700.00 | Window Closed / Lapsed |