US4654263A
Expired / Lapsed
US
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Polymer composition
Assignee: Imperial Chemical Industries Ltd
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Filing: 1985-01-22
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Granted: 1987-03-31
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Expires: 2005-01-22
Abstract
Abstract A polyaryletherketone composition has a plurality which is such that a wire coated with the composition has a recoil of not more than 40 DEG . Compositions having such pliability include those containing a polyaryletherketone and boron nitride. The polyaryletherketone can be polyaryletheretherketone. The composition can be obtained by blending together the polymer and boron nitride, and the blend can be extruded onto an electrical conductor. When extruded onto a wire, the composition gives a more pliable coated wire than is obtained using the polymer alone as the wire coating. The composition gives a coherent coating when coated onto a wire. The composition is also suitable for the production of bearings or bearing liners.
Inventors
- 👤 Michael K. Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:47
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; C; C08; C08K; C08K3/00; C08K3/38; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2916; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
56 words
A polyaryletherketone composition which has a pliability which is such that a copper wire of mean diameter 1 mm, when coated with the composition to give a coating of 0.25 mm average thickness, shows a recoil of not more than 40°, after bending through 90° using the minimum load to bend the coated wire through 90°.
Claim 2
Dependent Claim
56 words
A polyaryletherketone composition which has a pliability which is such that a copper wire of mean diameter 1 mm, when coated with the composition to give a coating of 0.25 mm average thickness, shows a recoil of not more than 40°, after bending through 90° using the minimum load to bend the coated wire through 90°.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the minimum load required to bend the coated wire through 90° is 0.5 kilogramme or less.
Claim 4
Dependent Claim
12 words
A polymer composition comprising a mixture of a polyaryletherketone with boron nitride.
Claim 5
Dependent Claim
12 words
A polymer composition comprising a mixture of a polyaryletherketone with boron nitride.
Claim 6
Dependent Claim
28 words
The composition of claim 3 which also includes at least one further component which is a stabiliser, an inorganic or organic fibre or an inorganic or organic filler.
Claim 7
Dependent Claim
25 words
The composition of claim 3 which contains from 5 up to 30% by weight of boron nitride relative to the total weight of the composition.
Claim 8
Dependent Claim
37 words
The composition of claim 3 wherein the polyaryletherketone component is a polymer which contains the repeat units ##STR4## or the repeat units ##STR5## alone or in conjunction with each other and/or in conjunction with other repeat units.
Claim 9
Dependent Claim
17 words
The composition of claim 6 wherein the polyaryletherketone is a crystalline polymer containing the repeat units I.
Claim 10
Dependent Claim
21 words
The composition of claim 3 wherein the boron nitride has a weight average particle size of not more than 10 micrometers.
Claim 11
Dependent Claim
41 words
A process for the production of a polymer composition which comprises mixing together a polyaryletherketone with boron nitride and optionally with at least one further component which is a stabiliser, an inorganic or organic fibre or an inorganic or organic filler.
Claim 12
Dependent Claim
41 words
A process for the production of a polymer composition which comprises mixing together a polyaryletherketone with boron nitride and optionally with at least one further component which is a stabiliser, an inorganic or organic fibre or an inorganic or organic filler.
Claim 13
Dependent Claim
22 words
The process of claim 9 wherein the materials are mixed together using a solids blending technique and the obtained blend is extruded.
Claim 14
Dependent Claim
18 words
An electrical conductor which is provided with an insulating coating formed from the polymer composition of claim 3.
Claim 15
Dependent Claim
34 words
A plain bearing which is formed from a polymer composition or from a metal backing having a lining formed from a polymer composition, wherein the polymer composition is the polymer composition of claim 3.
Claim 16
Dependent Claim
14 words
A polymer composition consisting essentially of a mixture of a polyaryletherketone with boron nitride.
Claim 17
Dependent Claim
14 words
A polymer composition consisting essentially of a mixture of a polyaryletherketone with boron nitride.
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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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |