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US5025922A
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US
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Agent for imparting antistatic characteristics to a thermoplastic polymer and a thermoplastic polymer composition containing the agent
Assignee: Cryovac LLC
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Filing: 1989-06-09
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Granted: 1991-06-25
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Expires: 2009-06-09
Abstract
Abstract Disclosed is a thermoplastic polymeric composition having antistatic characteristics and a method to make same. The composition comprises a thermoplastic polymer in admixture with an antistatic agent. In one embodiment the polymer is nylon 12 and the agent is N-butyl benzenesulfonamide. Also disclosed is the antistatic polymeric composition in a film, which is useful for packaging static sensitive devices such as electronic circuit boards, or for packaging devices that must be protected from static electricity such as devices in a medical operating room where explosive oxygen and/or ether are present.
Inventors
- 👤 Marvin R. Havens
- 👤 Joseph R. Lovin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:40
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/34; C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; Y; Y10; Y10S; Y10S524/00; Y10S524/91
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
A packaged static sensitive device protected from electrostatic charges comprising: a package comprising a static sensitive device having conformed thereabout an antistatic film having one or more layers, wherein at least one layer comprises a composition of a thermoplastic polymer in admixture with an antistatic agent wherein the polymer comprises nylon polymer and the antistatic agent comprises aromatic sulfonamide that is substantially non-hygroscopic and substantially non-migratable.
Claim 2
Dependent Claim
66 words
A packaged static sensitive device protected from electrostatic charges comprising: a package comprising a static sensitive device having conformed thereabout an antistatic film having one or more layers, wherein at least one layer comprises a composition of a thermoplastic polymer in admixture with an antistatic agent wherein the polymer comprises nylon polymer and the antistatic agent comprises aromatic sulfonamide that is substantially non-hygroscopic and substantially non-migratable.
Claim 3
Dependent Claim
49 words
The packaged device of claim 1, wherein said film comprises a film having at least two layers wherein one layer of said at least two layers comprising said nylon polymer in admixture with said aromatic sulfonamide, and the other layer of said at lest two layers comprises a polyethylene.
Claim 4
Dependent Claim
20 words
The packaged device of claim 2, wherein the polyethylene is LDPE, NDPE, HDPE, LLDPE, VLDPE, EVA, or a mixture thereof.
Claim 5
Dependent Claim
26 words
The packaged device of claim 1, wherein the antistatic agent is present in the admixture in an amount from about 10% to about 80% by weight.
Claim 6
Dependent Claim
22 words
The packaged device of claim 1, wherein the aromatic sulfonamide is benzenesulfonamide, N-butyl benzenesulfonamide, o-toluenesulfonamide, p-toluenesulfonamide, N-ethyl-o-toluene sulfonamide, N-ethyl-p-toluenesulfonamide, or mixtures thereof.
Claim 7
Dependent Claim
13 words
The packaged device of claim 1, wherein said film comprises a monolayer film.
Claim 8
Dependent Claim
17 words
The packaged device of claim 1, wherein said film comprises a film having at least two layers.
Claim 9
Dependent Claim
20 words
The packaged device of claim 1, wherein said film comprises at least the multilayer structure: nylon/polyethylene/polyethylene/nylon, in air cushion form.
Claim 10
Dependent Claim
20 words
The packaged device of claim 1, wherein said film has been irradiated at a dosage up to about 12 MR.
Claim 11
Dependent Claim
11 words
The packaged device of claim 1, wherein said film is oriented.
References Cited (Backward Citations)
US2214405A
Cited
US3022543A
Cited
US3164481A
Cited
US3821182A
Cited
US4048428A
Cited
US3223545A
Cited
US3220985A
Cited
US3441552A
Cited
US3576649A
Cited
US3741253A
Cited
US4117193A
Cited
US4194039A
Cited
US4188443A
Cited
US4274900A
Cited
US4229241A
Cited
EP0016617A1
Cited
US4347332A
Cited
US4536532A
Cited
US4600743A
Cited
US4494651A
Cited
US4576669A
Cited
US4579516A
Cited
US4605684A
Cited
EP0224979A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |