US5573822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked tube and heat-shrinkable tube
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1995-01-26
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Granted: 1996-11-12
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Expires: 2015-01-26
Abstract
Abstract A crosslinked tube and heat-shrinkable tube, which each comprises an ionomer resin composition layer, the ionomer resin composition layer comprising (a) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with potassium ions and (b) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with sodium ions or/and zinc ions, the proportion of the ionomer resin (a) to the ionomer resin (b) being from 100/0 to 50/50 by weight. A heat-shrinkable tube, which comprises the ionomer resin composition layer having on the inner surface thereof an adhesive layer.
Inventors
- 👤 Shinya Nishikawa
- 👤 Hiroshi Hayami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:39
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/003; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0869; C08L23/0876; B29K; B29K2096/00; B29K2096/005; B29K2995/00; B29K2995/0018; B29K2995/0026; C08L2205/00; C08L2205/02; C08L2205/03; C08L2312/00; C08L77/00; C08L79/00; C08L79/02; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393; Y10T428/1397
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
108 words
A heat-shrinkable Lichtenberg discharge marks free tube comprising a crosslinked ionomer resin composition layer, said ionomer resin layer being crosslinked by electron beam irradiation and consisting essentially of a blend of (a) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with potassium ions and (b) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with one or both of sodium ions and zinc ions, the proportion of said ionomer resin (a) to said ionomer resin (b) being from 100/0 to 50/50 by weight.
Claim 2
Dependent Claim
108 words
A heat-shrinkable Lichtenberg discharge marks free tube comprising a crosslinked ionomer resin composition layer, said ionomer resin layer being crosslinked by electron beam irradiation and consisting essentially of a blend of (a) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with potassium ions and (b) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with one or both of sodium ions and zinc ions, the proportion of said ionomer resin (a) to said ionomer resin (b) being from 100/0 to 50/50 by weight.
Claim 3
Dependent Claim
26 words
A heat-shrinkable tube as claimed in claim 1, wherein the proportion of said ionomer resin (a) to said ionomer resin (b) is from 100/0 to 60/40.
Claim 4
Dependent Claim
23 words
A heat-shrinkable tube as claimed in claim 1, further comprising an adhesive layer on the inner surface of said ionomer resin composition layer.
Claim 5
Dependent Claim
22 words
A heat-shrinkable tube as claimed in claim 3, wherein the adhesive layer comprises a resin composition containing an ethylene-ethyl acrylate-carbon monoxide copolymer.
Claim 6
Dependent Claim
16 words
A heat-shrinkable tube as claimed in claim 1, wherein the tube is clear, colorless, and transparent.
References Cited (Backward Citations)
EP0259246A2
Cited
EP0273341A2
Cited
US4915139A
Cited
US5179168A
Cited
JPH0493340A
Cited
US5209983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-12 | 2000-05-13 | 2000-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-12 | 2004-05-13 | 2004-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-12 | 2008-05-13 | 2008-11-12 | $7700.00 | Window Closed / Lapsed |