Patent US4505982A successfully refreshed from Google Patents.
US4505982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped body having good long-term thermal stability and containing fluorohydrocarbon polymers
Assignee: Hoechst AG
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Filing: 1981-12-04
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Granted: 1985-03-19
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Expires: 2001-12-04
Abstract
Abstract Disclosed is a shaped body exhibiting good long-term thermal stability, comprising at least one fluorohydrocarbon polymer which can be processed by melting, and at least one heat-resistant thermoplastic polymer, wherein at least the fluorohydrocarbon polymer forms a phase which is coherent or at least largely coherent. The weight ratio of the fluorohydrocarbon polymer to the thermoplastic polymer preferably varies between about 80:20 and about 20:80. The shaped body is preferably a film used as a layer of insulation.
Inventors
- 👤 Klaus Hoheisel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:06
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L67/00; C08L67/02; C08L69/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10S525/00; Y10S525/931; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
A shaped body exhibiting good long-term thermal stability and high mechanical strength, comprising: at least one fluorohydrocarbon polymer which can be processed by melting; and at least one heat-resistant thermoplastic polymer, wherein the shaped body comprises two phases which are non-homogeneous with one another and at least said fluorohydrocarbon polymer forms a phase which is at least essentially continuous.
Claim 2
Dependent Claim
59 words
A shaped body exhibiting good long-term thermal stability and high mechanical strength, comprising: at least one fluorohydrocarbon polymer which can be processed by melting; and at least one heat-resistant thermoplastic polymer, wherein the shaped body comprises two phases which are non-homogeneous with one another and at least said fluorohydrocarbon polymer forms a phase which is at least essentially continuous.
Claim 3
Dependent Claim
20 words
A shaped body as described in claim 1, wherein at least said fluorohydrocarbon polymer forms a phase which is continuous.
Claim 4
Dependent Claim
28 words
A shaped body as described in claim 1, wherein said fluorohydrocarbon polymer is selected from a group consisting of polyvinylidene fluoride, a tetrafluoroethylene/ethylene copolymer and a tetrafluoroethylene/hexafluropropylene copolymer.
Claim 5
Dependent Claim
16 words
A shaped body as described in claim 3, wherein said fluorohydrocarbon polymer comprises a tetrafluoroethylene/ethylene copolymer.
Claim 6
Dependent Claim
41 words
A shaped body as described in claim 4, wherein said heat-resistant thermoplastic polymer is selected from a group consisting of a polyester, a polycarbonate, a polyamide, a polyimide, a polysulfone, a polyether sulfone, a polyketone, a polyether ketone, and a polyether.
Claim 7
Dependent Claim
16 words
A shaped body as described in claim 5, wherein said polyester comprises a linear, saturated polyester.
Claim 8
Dependent Claim
29 words
A shaped body as described in claim 5, wherein said heat-resistant thermoplastic polymer is selected from a group consisting of polyethylene terephthalate and a polycarbonate of a dihydroxy compound.
Claim 9
Dependent Claim
14 words
A shaped body as described in claim 7, wherein said polycarbonate comprises bisphenol A.
Claim 10
Dependent Claim
18 words
A shaped body as described in claim 1, wherein said heat-resistant thermoplastic polymer comprises an inert thermoplastic polymer.
Claim 11
Dependent Claim
56 words
A shaped body as described in claim 1, further comprising an additive selected from the group consisting of a lubricant, a slipping agent, an anti-blocking agent, a light absorber, a UV absorber, a cross-linking agent, a flattening agent, a color-protecting agent, a flame-retardant, a dyestuff, a plasticizer, a filler, a conductance-improving agent and an antistatic agent.
Claim 12
Dependent Claim
15 words
A shaped body as described in claim 1, wherein the shaped body comprises a film.
Claim 13
Dependent Claim
16 words
A shaped body as described in claim 11, wherein said film is monoaxially or biaxially stretched.
Claim 14
Dependent Claim
15 words
A shaped body as described in claim 1 wherein the shaped body comprises a fiber.
Claim 15
Dependent Claim
15 words
A shaped body as described in claim 1 wherein the shaped body is a thread.
Claim 16
Dependent Claim
27 words
A shaped body as described in claim 1, wherein the shaped body is formed by melt blending a mixture comprising said fluorohydrocarbon polymer and said thermoplastic polymer.
Claim 17
Dependent Claim
27 words
A shaped body as described in claim 1, wherein the weight ratio of said fluorohydrocarbon polymer to said thermoplastic polymer varies between about 80:20 and about 20:80.
Claim 18
Dependent Claim
27 words
A shaped body as described in claim 16, wherein said weight ratio of said fluorohydrocarbon polymer to said thermoplastic polymer varies between about 70:30 and about 50:50.
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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) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |