US4798752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable sheet
Assignee: Raychem Ltd
•
Filing: 1985-11-04
•
Granted: 1989-01-17
•
Expires: 2005-11-04
Abstract
Abstract A curable sheet comprising first and second curing reactants arranged in discrete areas of the sheet, preferably by coextrusion, in patterns such as stripes and checks. The sheet cures upon fusion of the respective areas of the curing reactants.
Inventors
- 👤 Robert H. McLoughlin
- 👤 Pushpkumar D. Changani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:29
CPC Classifications
B; B29; B29B; B29B11/00; B29B11/06; B29B11/10; B29B11/14; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/305; B29C48/36; B29C48/49; B29C49/00; B29C49/071; B29C61/00; B29C61/06; B29C61/0608; C; C08; C08J; C08J3/00; C08J3/24; C08J3/241; C09; C09J; C09J123/00; C09J123/02; C09J123/025; C09J5/00; C09J5/06; H; H01; H01R; H01R4/00; H01R4/70; H01R4/72; H02; H02G; H02G15/00; H02G15/013; B29C2949/00; B29C2949/07; B29C2949/0715; B29C48/08; B29C48/19; B29K; B29K2105/00; B29K2105/24; B29L; B29L2007/00; B29L2007/002; C08L; C08L2666/00; C08L2666/02; C08L2666/14; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/18; Y10T428/183; Y10T428/187; Y10T428/19; Y10T428/192; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2973; Y10T428/2975; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
76 words
An assembly comprising (a) a heat-recoverable article and (b) a curable sheet comprising a plurality of discrete regions of each of at least two mutually reactive polymeric components which components are fusion bonded to each other at least at the mutual edge interfaces of their respective sheet regions in a substantially fixed spatial arrangement such that the said two components will react together to effect curing of the sheet when said heat-recoverable article is heat-recovered thereon.
Claim 2
Dependent Claim
76 words
An assembly comprising (a) a heat-recoverable article and (b) a curable sheet comprising a plurality of discrete regions of each of at least two mutually reactive polymeric components which components are fusion bonded to each other at least at the mutual edge interfaces of their respective sheet regions in a substantially fixed spatial arrangement such that the said two components will react together to effect curing of the sheet when said heat-recoverable article is heat-recovered thereon.
Claim 3
Dependent Claim
19 words
An assembly according to claim 1, wherein the said two components have been coextruded to form the respective regions.
Claim 4
Dependent Claim
41 words
An assembly according to claim 1 or 2 wherein the respective regions lie substantially parallel to one another and are interspersed with one another across the main surface of the sheet in a sense transverse to the direction of parallel lie.
Claim 5
Dependent Claim
32 words
An assembly according to claim 1 or 2, wherein the respective regions are interspersed with one another laterally and longitudinally in a plane lying parallel with the main surfaces of the sheet.
Claim 6
Dependent Claim
40 words
An assembly according to claim 1 or 2, said sheet comprising at least two layers of the said regions, wherein the respective regions of each component in each layer are offset from the corresponding regions in the immediately adjacent layer(s).
Claim 7
Dependent Claim
20 words
An assembly according to claim 1 or 2, wherein the respective regions of the two components alternate with each other.
Claim 8
Dependent Claim
34 words
An assembly as claimed in claim 1 or 2, wherein each of the reactive components has a fusion temperature that is not more than 50° C. above the recovery temperature of the heat-recoverable article.
Claim 9
Dependent Claim
28 words
An assembly as claimed in claim 1 or 2, wherein each of the reactive components has a fusion temperature in the range of from 70° to 120° C.
Claim 10
Dependent Claim
38 words
An assembly as claimed in claim 1 or 2, wherein each of the reactive components has a fusion temperature that differs from the fusion temperature of the or each other reactive component by not more than 30° C.
Claim 11
Dependent Claim
36 words
An assembly as claimed in claim 1 or 2 wherein said sheet includes one or more non-reactive components and has a softening temperature range that is greater than the softening temperature range of the reactive components.
Claim 12
Dependent Claim
33 words
An assembly as claimed in claim 1 or 2, wherein one of the reactive components comprises an epoxy resin and the other reactive component comprises a thermoplastic polyamide resin having free amine groups.
Claim 13
Dependent Claim
67 words
An assembly according to claim 1, wherein said sheet comprises regions of three reactive polymeric components, which components are (a) a thermoplastic polyamide having reactive amine groups; (b) a thermoplastic copolymer of an alkene with an ethylenically unsaturated ester of an alkanol and a carboxylic acid, the ester having up to 6 carbon atoms, and optionally one or more acidic comonomers; and (c) a thermoplastic epoxy resin.
Claim 14
Dependent Claim
37 words
An assembly according to claim 1 or 2, wherein at least one of the reactive components incorporates a polymeric binder and a low molecular weight or liquid reactive material capable of reacting with the other reactive component(s).
Claim 15
Dependent Claim
80 words
A dimensionally recoverable article having on at least part of a surface thereof a curable sheet comprising a plurality of discrete regions of each of at least two mutually reactive polymeric components which components are fusion bonded to each other at least at the mutual edge interfaces of their respective sheet regions in a substantially fixed spatial arrangement such that the said two components will react together to effect curing of the sheet when said dimensionally-recoverable article is recovered thereon.
Claim 16
Dependent Claim
80 words
A dimensionally recoverable article having on at least part of a surface thereof a curable sheet comprising a plurality of discrete regions of each of at least two mutually reactive polymeric components which components are fusion bonded to each other at least at the mutual edge interfaces of their respective sheet regions in a substantially fixed spatial arrangement such that the said two components will react together to effect curing of the sheet when said dimensionally-recoverable article is recovered thereon.
Claim 17
Dependent Claim
28 words
An article as claimed in claim 14 which is in the form of a tube and carries the curable sheet on at least part of its inner surface.
Claim 18
Dependent Claim
28 words
An article as claimed in claim 14 which is in the form of a sheet and carries the curable sheet on at least part of one surface thereof.
References Cited (Backward Citations)
US30843A
Cited
US3409497A
Cited
GB1088572A
Cited
GB1252805A
Cited
USRE30843E
Cited
GB1452785A
Cited
GB1497051A
Cited
US4024002A
Cited
US4271329A
Cited
GB1562050A
Cited
GB2023147A
Cited
US4324827A
Cited
GB2048720A
Cited
GB2097401A
Cited
GB2104800A
Cited
DE3150544A1
Cited
US4427725A
Cited
US4624720A
Cited
US4626458A
Cited
US4631098A
Cited
US4576666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-17 | 1992-07-18 | 1993-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-17 | 1996-07-18 | 1997-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-17 | 2000-07-18 | 2001-01-17 | $7700.00 | Window Closed / Lapsed |