Patent EP0153199A2 successfully refreshed from Google Patents.
EP0153199A2
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Recoverable polyethylene composition and article
Assignee: Raychem Corp
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Filing: 1985-02-21
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Granted: —
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Expires: 2005-02-21
Abstract
Abstract This invention discloses a recoverable composition of an article comprising cross-linked polyethylene. The polyethylene has a molecular weight greater than about 3.0 million.
Inventors
- 👤 Nachum Resenzweig
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/003; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0658; B29K2023/0683
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
17 words
1 . A recoverable composition comprising crosslinked polyethylene having a molecular weight greater than about 3.0 million.
Claim 2
Dependent Claim
17 words
1 . A recoverable composition comprising crosslinked polyethylene having a molecular weight greater than about 3.0 million.
Claim 3
Dependent Claim
55 words
A recoverable composition according to claim 1, having a recovery force at 120°C while stretched 3.5 times its original length such that at any unit of time, the recovery force is greater than about 1750 - 275.log (t), preferably greater than about 2474 - 275 log (t), where t is from 0.1 to 30 minutes.
Claim 4
Dependent Claim
17 words
A recoverable composition according to claim 1 or 2, that is recoverable by the application of heat.
Claim 5
Dependent Claim
24 words
A recoverable composition according to claim 1, 2 or 3, wherein said composition is expanded at or below the melting point of the composition.
Claim 6
Dependent Claim
33 words
A recoverable composition according to any pro- ceding claim, wherein said composition is expanded within the temperature range of room temperature to 140°C, preferably within the temperature range of room temperature to 125°C.
Claim 7
Dependent Claim
30 words
A recoverable composition according to any preceding claim, wherein the composition is recovered within the temperature range of roam temperature to 140°C, within the temperature range of 75°C to 125°C.
Claim 8
Dependent Claim
52 words
A recoverable composition comprising crosslinked polyethylene having a recovery force at 120°C while stretched 3.5 times its original length such that at any unit of time the recovery force is greater than about 1750 - 275.log (t), preferably greater than about 2475 -275-log (t) where t is from 0.1 to 30 minutes.
Claim 9
Dependent Claim
52 words
A recoverable composition comprising crosslinked polyethylene having a recovery force at 120°C while stretched 3.5 times its original length such that at any unit of time the recovery force is greater than about 1750 - 275.log (t), preferably greater than about 2475 -275-log (t) where t is from 0.1 to 30 minutes.
Claim 10
Dependent Claim
17 words
A recoverable composition according to any preceding claim, wherein the composition has been cross- linked by irradiation.
Claim 11
Dependent Claim
13 words
A recoverable article made from a recoverable composition according to any preceding claim.
Claim 12
Dependent Claim
41 words
A recoverable article according to claim 9, wherein said article has an inside diameter and said article may be expanded up to ten times its original inside diameter, and preferably may be expanded up to eight times its original inside diameter.
Claim 13
Dependent Claim
54 words
A recoverable article according to claim 9 or 10, wherein said polyethylene is recovered upon a substrate to form a bearing means, said bearing means having a bearing surface, the bearing surface preferably being the outer periphery of said bearing means and the polyethylene preferably forming at least a portion of said bearing surface.
Claim 14
Dependent Claim
15 words
A recoverable article according to claim 11, wherein said bearing means is a rotatable article.
References Cited (Backward Citations)
No citation records indexed.
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