Patent US5183701A successfully refreshed from Google Patents.
US5183701A
Expired / Lapsed
US
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Articles of highly oriented polyolefins of ultrahigh molecular weight, process for their manufacture, and their use
Assignee: Dyneema VOF
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Filing: 1991-08-19
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Granted: 1993-02-02
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Expires: 2011-08-19
Abstract
Abstract The invention relates to articles consisting of highly oriented polyolefins having an ultrahigh molecular weight of more than 600,000 g/mol (weight-average molecular weight), especially filaments, fibers, yarns, fabrics and films, having good wetting and adhesive properties, especially on conventional matrix materials, which have been subjected to a plasma treatment of their surface, and also to a process for producing these articles and to their use for the manufacture of composites with the use of conventional matrix materials. In these composites, yarns according to the invention, for example, show a substantially higher adhesive strength than corresponding yarns which have not been plasma-treated, their tensile strength not being impaired by the plasma treatment.
Inventors
- 👤 Martinus J. N. Jacobs
- 👤 Hendrikus J. J. Rutten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:35
CPC Classifications
D; D06; D06M; D06M10/00; D06M10/02; D06M10/025; D06M2101/00; D06M2101/16; D06M2101/18; D06M2200/00; D06M2200/50; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2942; Y10T428/2964; Y10T428/2967; Y10T428/31; Y10T442/00; Y10T442/20; Y10T442/2484; Y10T442/2738; Y10T442/2861; Y10T442/291
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
100 words
A polyolefin article having good wetting and adhesive properties for use in combination with matrix materials in the manufacture of composite materials, comprising highly oriented polyolefins having molecular weights greater than 600,000 g/mol, a surface of said article being subjected to a plasma treatment in the presence of reactive gases, wherein the plasma treatment is carried out under a pressure from 0.2 to 5 mmHg, and at an energy density from 5 to 100 kW/m 3 , with a residence time from 5 seconds to 200 seconds and wherein tensile strength of the plasma treated article is not essentially modified.
Claim 2
Dependent Claim
100 words
A polyolefin article having good wetting and adhesive properties for use in combination with matrix materials in the manufacture of composite materials, comprising highly oriented polyolefins having molecular weights greater than 600,000 g/mol, a surface of said article being subjected to a plasma treatment in the presence of reactive gases, wherein the plasma treatment is carried out under a pressure from 0.2 to 5 mmHg, and at an energy density from 5 to 100 kW/m 3 , with a residence time from 5 seconds to 200 seconds and wherein tensile strength of the plasma treated article is not essentially modified.
Claim 3
Dependent Claim
10 words
Articles as claimed in claim 1, which consist of polyethylenes.
Claim 4
Dependent Claim
17 words
The article as claimed in claim 1, wherein the articles are filaments, fibers, yarns, fabrics or films.
Claim 5
Dependent Claim
9 words
A composite comprising an article according to claim 1.
Claim 6
Dependent Claim
87 words
A process for the manufacture of articles having good wetting and adhesive qualities for use in combination with matrix materials in the manufacture of composite materials, which comprises subjecting the surface of articles comprising highly oriented filaments, fibers, yarns, fabrics and films consisting of polyolefins of ultrahigh molecular weight to a plasma treatment, wherein the plasma treatment is carried out at an energy density of 5 to 30 kW/m 3 , with a residence time of 5 seconds to 50 seconds in the presence of reactive gases.
Claim 7
Dependent Claim
87 words
A process for the manufacture of articles having good wetting and adhesive qualities for use in combination with matrix materials in the manufacture of composite materials, which comprises subjecting the surface of articles comprising highly oriented filaments, fibers, yarns, fabrics and films consisting of polyolefins of ultrahigh molecular weight to a plasma treatment, wherein the plasma treatment is carried out at an energy density of 5 to 30 kW/m 3 , with a residence time of 5 seconds to 50 seconds in the presence of reactive gases.
Claim 8
Dependent Claim
78 words
A polyolefin article having good wetting and adhesive properties for use in combination with matrix materials in the manufacture of composite materials, comprising highly oriented polyolefins having molecular weights greater than 600,000 g/mol, a surface of said article being subjected to a plasma treatment in the presence of reactive gases, wherein the plasma treatment is carried out at an energy density of at most 30 kW/m 3 , with a residence time of 5 seconds to 50 seconds.
Claim 9
Dependent Claim
78 words
A polyolefin article having good wetting and adhesive properties for use in combination with matrix materials in the manufacture of composite materials, comprising highly oriented polyolefins having molecular weights greater than 600,000 g/mol, a surface of said article being subjected to a plasma treatment in the presence of reactive gases, wherein the plasma treatment is carried out at an energy density of at most 30 kW/m 3 , with a residence time of 5 seconds to 50 seconds.
Claim 10
Dependent Claim
109 words
A process for the manufacture of articles having good wetting and adhesive qualities for use in combination with matrix materials in the manufacture of composite materials, which comprises subjecting the surface of articles comprising highly oriented filaments, fibers, yarns, fabrics and films consisting of polyolefins of ultrahigh molecular weight to a plasma treatment, wherein the plasma treatment is carried out under a pressure from 0.2 to 5 mmHg, and at an energy density from 5 to 100 kW/m 3 , with a residence time from 5 seconds to 200 seconds in the presence of reactive gases and wherein tensile strength of the plasma treated articles is not essentially modified.
Claim 11
Dependent Claim
109 words
A process for the manufacture of articles having good wetting and adhesive qualities for use in combination with matrix materials in the manufacture of composite materials, which comprises subjecting the surface of articles comprising highly oriented filaments, fibers, yarns, fabrics and films consisting of polyolefins of ultrahigh molecular weight to a plasma treatment, wherein the plasma treatment is carried out under a pressure from 0.2 to 5 mmHg, and at an energy density from 5 to 100 kW/m 3 , with a residence time from 5 seconds to 200 seconds in the presence of reactive gases and wherein tensile strength of the plasma treated articles is not essentially modified.
Claim 12
Dependent Claim
41 words
A process as claimed in claim 7, wherein a chemical treatment is carried out on the article in order to improve the wetting and adhesive properties and wherein said chemical treatment provides additional active groups on the surface of the article.
Claim 13
Dependent Claim
11 words
The process of claim 7, wherein the polyolefins are linear polyethylenes.
Claim 14
Dependent Claim
19 words
The process of claim 3, wherein the plasma treatment is carried out at a pressure of approximately 1 mmHg.
Claim 15
Dependent Claim
17 words
The process of claim 7, wherein the articles are subjected to pre-cleaning prior to said plasma treatment.
Claim 16
Dependent Claim
16 words
The process of claim 3, wherein the plasma treatment is carried out at approximately room temperature.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-02 | 1996-08-03 | 1997-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-02 | 2000-08-03 | 2001-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-02 | 2004-08-03 | 2005-02-02 | $7700.00 | Window Closed / Lapsed |