US5552199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt-processable electroconductive fluoroplastic
Assignee: 3M Innovative Properties Co
•
Filing: 1994-09-02
•
Granted: 1996-09-03
•
Expires: 2014-09-02
Abstract
Abstract This invention provides a melt-processable conductive fluoroplastic composition comprising a melt-processable, thermoplastic fluoropolymer component of interpolymerized units comprising those derived from vinylidene fluoride, a conductive particulate component comprising conductive carbon black particles, and a hydrocarbon polymer component. The composition is useful for making, for example by melt-processing, conductive shaped articles including tubing.
Inventors
- 👤 Thomas J. Blong
- 👤 Claude Lavall ee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L23/00; C08L23/02; C08L71/00; C08L71/02; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
111 words
A melt-processable conductive fluoroplastic composition consisting essentially of a blend of: (a) a major amount of a melt-processable, thermoplastic fluoropolymer component having at least 5 wt % of its interpolymerized units derived from vinylidene fluoride and more than 25 wt % of its interpolymerized units derived from a combination of tetrafluoroethylene and hexafluoropropylene, such that the fluoropolymer has an amount of fluorine up to 75 wt %, (b) from 1 to 20 percent by weight of conductive particulate component comprising conductive carbon black particles, and (c) from 0.1 to 20 percent by weight, to reduce melt defecting of the composition of a polymer component comprising a polymer of ethylene and/or propylene.
Claim 2
Dependent Claim
111 words
A melt-processable conductive fluoroplastic composition consisting essentially of a blend of: (a) a major amount of a melt-processable, thermoplastic fluoropolymer component having at least 5 wt % of its interpolymerized units derived from vinylidene fluoride and more than 25 wt % of its interpolymerized units derived from a combination of tetrafluoroethylene and hexafluoropropylene, such that the fluoropolymer has an amount of fluorine up to 75 wt %, (b) from 1 to 20 percent by weight of conductive particulate component comprising conductive carbon black particles, and (c) from 0.1 to 20 percent by weight, to reduce melt defecting of the composition of a polymer component comprising a polymer of ethylene and/or propylene.
Claim 3
Dependent Claim
38 words
A fluoroplastic composition according to claim 1 wherein said fluoropolymer component is a thermoplastic terpolymer derived by copolymerizing 35 to 70 wt % tetrafluoroethylene, 10 to 30 wt % hexafluoropropylene, and 10 to 50 wt % vinylidene fluoride.
Claim 4
Dependent Claim
30 words
A fluoroplastic composition according to claim 1 wherein said fluoropolymer component has an ASTM D 1238 melt index of less than 1000 g/min, measured at 265° C. and 5 kg.
Claim 5
Dependent Claim
15 words
A fluoroplastic composition according to claim 1 wherein said polymer component further comprises a poly(oxyalkylene).
Claim 6
Dependent Claim
18 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises a homopolymer of ethylene or propylene.
Claim 7
Dependent Claim
18 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises a copolymer of ethylene and propylene.
Claim 8
Dependent Claim
25 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises a copolymer of ethylene or propylene with at least one other ethylenically-unsaturated comonomer.
Claim 9
Dependent Claim
24 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises copolymers of ethylene and propylene or either of them with higher alpha-olefins.
Claim 10
Dependent Claim
21 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises copolymers of ethylene with 1-butene, 1-hexene, 4-methyl-1-pentene, or 1-octene.
Claim 11
Dependent Claim
16 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises a homopolymer of ethylene.
Claim 12
Dependent Claim
16 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises a homopolymer of propylene.
Claim 13
Dependent Claim
41 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises a polymer of ethylene having a melt flow index between 0.1 and 1000 g/min. as measured by ASTM D 1238 at 190° C. and a loading of 2.16 kg.
Claim 14
Dependent Claim
9 words
A conductive extrudate comprising the blend of claim 1.
Claim 15
Dependent Claim
10 words
A conductive extruded film comprising the blend of claim 1.
Claim 16
Dependent Claim
9 words
A conductive tubing comprising the blend of claim 1.
Claim 17
Dependent Claim
19 words
A method of making the fluoroplastic composition of claim 1, which comprises blending said components (a), (b), and (c).
Claim 18
Independent Claim
121 words
A method of making a conductive shaped plastic article which comprises dry-blending a mixture consisting essentially of (a) a major amount of a melt-processable, thermoplastic fluoroplastic fluoropolymer component having at least 5 wt % of its interpolymerized units derived from vinylidene fluoride and more than 25 wt % of its interpolymerized units derived from a combination of tetrafluoroethylene and hexafluoropropylene, such that the fluoropolymer has an amount of fluorine up to 75 wt %, (b) from 1 to 20 percent by weight of a conductive particulate component comprising conductive carbon black particles, and (c) from 0.1 to 20 percent by weight of a polymer component comprising a polymer of ethylene and/or propylene, and melt-processing the resulting blend to form said article.
Claim 19
Independent Claim
121 words
A method of making a conductive shaped plastic article which comprises dry-blending a mixture consisting essentially of (a) a major amount of a melt-processable, thermoplastic fluoroplastic fluoropolymer component having at least 5 wt % of its interpolymerized units derived from vinylidene fluoride and more than 25 wt % of its interpolymerized units derived from a combination of tetrafluoroethylene and hexafluoropropylene, such that the fluoropolymer has an amount of fluorine up to 75 wt %, (b) from 1 to 20 percent by weight of a conductive particulate component comprising conductive carbon black particles, and (c) from 0.1 to 20 percent by weight of a polymer component comprising a polymer of ethylene and/or propylene, and melt-processing the resulting blend to form said article.
Claim 20
Dependent Claim
11 words
The method according to claim 17 wherein said melt-processing comprises extrusion.
Claim 21
Dependent Claim
25 words
A fluoroplastic composition according to claim 1 wherein said polymer component comprises a copolymer of ethylene and propylene with at least one other ethylenically-unsaturated comonomer.
Claim 22
Dependent Claim
23 words
A method of reducing melt-defects of a fluoroplastic article comprising melt-processing the composition of claim 1 to form a conductive shaped plastic article.
References Cited (Backward Citations)
US2968649A
Cited
US3473087A
Cited
US3519703A
Cited
GB1293667A
Cited
US3861029A
Cited
US4013622A
Cited
US4560498A
Cited
US4534889A
Cited
US4159975A
Cited
US4129717A
Cited
US4188352A
Cited
US4237441A
Cited
US4293663A
Cited
US4545926A
Cited
US4318881A
Cited
US4328140A
Cited
US4459473A
Cited
US4665963A
Cited
US4624990A
Cited
US4746573A
Cited
US4617351A
Cited
US5110645A
Cited
EP0524700A1
Cited
US5000875A
Cited
US4902444A
Cited
US4855360A
Cited
US5206293A
Cited
EP0551094A1
Cited
US5284184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-09-03 | 2000-03-04 | 2000-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-03 | 2004-03-04 | 2004-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-03 | 2008-03-04 | 2008-09-03 | $7700.00 | Window Closed / Lapsed |