Patent US5153039A successfully refreshed from Google Patents.
US5153039A
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US
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High density polyethylene article with oxygen barrier properties
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1991-12-09
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Granted: 1992-10-06
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Expires: 2011-12-09
Abstract
Abstract An article of manufacture which includes a barrier layer formed of a high density polyethylene composition comprising: from about 50 to about 95 weight percent of high density polyethylene; from about 5 to 40 weight percent of polyisobutylene rubber; and from about 1 to about 30 weight percent of a filler selected from the group consisting of mica, talc and mixtures thereof, the barrier layer having excellent oxygen permeation resistance. The article of manufacture may be a mono- or multi-ply layer, such as a blow-molded bottle.
Inventors
- 👤 Jay P. Porter
- 👤 William D. Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:38
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815; C08L23/18; C08L23/20; C08L23/22; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1386; Y10T428/1397; Y10T428/25; Y10T428/251; Y10T428/259; Y10T428/31504; Y10T428/31855; Y10T428/31931
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
93 words
An article of manufacture comprising a barrier layer formed of a high density polyethylene composition consisting of in weight percent based on the total weight of the composition: from about 50 to about 95 weight percent of high density polyethylene; from about 5 to about 40 weight percent of polyisobutylene rubber; and from about 1 to about 30 weight percent of a filler selected from the group consisting of mica, talc and mixtures thereof, the barrier layer having an oxygen permeability of less than about 50 cc. mil/100 in. 2 24 hrs. atm.
Claim 2
Dependent Claim
93 words
An article of manufacture comprising a barrier layer formed of a high density polyethylene composition consisting of in weight percent based on the total weight of the composition: from about 50 to about 95 weight percent of high density polyethylene; from about 5 to about 40 weight percent of polyisobutylene rubber; and from about 1 to about 30 weight percent of a filler selected from the group consisting of mica, talc and mixtures thereof, the barrier layer having an oxygen permeability of less than about 50 cc. mil/100 in. 2 24 hrs. atm.
Claim 3
Dependent Claim
12 words
The article of manufacture of claim 1, wherein said filler is mica.
Claim 4
Dependent Claim
31 words
The article of manufacture of claim 2, wherein said polyisobutylene rubber has a molecular weight of about 750,000 to 2,500,000 as determined from the intrinsic viscosity in disobutylene at 20° C.
Claim 5
Dependent Claim
33 words
The article of manufacture of claim 3, consisting of from about 60 to 85 weight percent of high density polyethylene, 5 to 20 weight percent polyisobutylene and 3 to 15 weight percent mica.
Claim 6
Dependent Claim
34 words
The article of manufacture composition of claim 1, consisting of from about 60 to 85 weight percent of high density polyethylene, 5 to 20 weight percent polyisobutylene and 3 to 15 weight percent mica.
Claim 7
Dependent Claim
12 words
The article of manufacture of claim 1, wherein said filler is talc.
Claim 8
Dependent Claim
27 words
The article of manufacture of claim 1, wherein said barrier layer has an oxygen permeability of less than about 20 cc. mil/100 in. 2 24 hrs. atm.
Claim 9
Dependent Claim
17 words
The article of manufacture of claim 1, wherein said article is in the form of a container.
Claim 10
Dependent Claim
12 words
The article of manufacture of claim 8, wherein said container is blow-molded.
Claim 11
Dependent Claim
13 words
The article of manufacture of claim 9, wherein said container is a bottle.
Claim 12
Dependent Claim
19 words
The article of manufacture of claim 1, wherein said article is in the form of a film or sheet.
Claim 13
Dependent Claim
16 words
The article of manufacture of claim 11, wherein said film or sheet is a multi-ply construction.
Claim 14
Dependent Claim
93 words
A blow molded bottle comprising a barrier layer formed of a high density polyethylene composition consisting of in weight percent based on the total weight of the composition: from about 50 to about 95 weight percent of high density polyethylene; from about 5 to about 40 weight percent of polyisobutylene rubber; and from about 1 to about 30 weight percent of a filler selected from the group consisting of mica, talc and mixtures thereof, the barrier layer having an oxygen permeability of less than about 50 cc. mil/100 in. 2 24 hrs. atm.
Claim 15
Dependent Claim
93 words
A blow molded bottle comprising a barrier layer formed of a high density polyethylene composition consisting of in weight percent based on the total weight of the composition: from about 50 to about 95 weight percent of high density polyethylene; from about 5 to about 40 weight percent of polyisobutylene rubber; and from about 1 to about 30 weight percent of a filler selected from the group consisting of mica, talc and mixtures thereof, the barrier layer having an oxygen permeability of less than about 50 cc. mil/100 in. 2 24 hrs. atm.
Claim 16
Independent Claim
116 words
A method for improving the oxygen permeation resistance of articles of manufacture formed from a high density polyethylene composition, said method consisting of adding to a high density polyethylene resin, in weight percent based on the total weight of the composition, from about 5 to about 40 weight percent of polyisobutylene rubber and from about 1 to about 30 weight percent of a filler selected from the group consisting of mica, talc and mixtures thereof, said polyethylene resin consisting of from about 50 to about 95 percent by weight of said composition, wherein articles of manufacture formed from said composition have an oxygen permeability of less than about 50 cc. mil/100 in. 2 24 hrs. atm.
Claim 17
Independent Claim
116 words
A method for improving the oxygen permeation resistance of articles of manufacture formed from a high density polyethylene composition, said method consisting of adding to a high density polyethylene resin, in weight percent based on the total weight of the composition, from about 5 to about 40 weight percent of polyisobutylene rubber and from about 1 to about 30 weight percent of a filler selected from the group consisting of mica, talc and mixtures thereof, said polyethylene resin consisting of from about 50 to about 95 percent by weight of said composition, wherein articles of manufacture formed from said composition have an oxygen permeability of less than about 50 cc. mil/100 in. 2 24 hrs. atm.
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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) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |