Patent US4560861A successfully refreshed from Google Patents.
US4543286A
Expired / Lapsed
US
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Composite containing coated extended chain polyolefin fibers
Assignee: Honeywell International Inc
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Filing: 1983-11-22
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Granted: 1985-09-24
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Expires: 2003-11-22
Abstract
Abstract High tenacity, high modulus ultrahigh molecular weight fibers of polyethylene or polypropylene are coated with polyethylene, polypropylene or an ethylene and/or propylene copolymer. The coating improves certain properties of the monofilament or multifilament, including adhesion to various matrices in complex composites and resistance of the fiber to fibrillation.
Inventors
- 👤 Gary A. Harpell
- 👤 Sheldon Kavesh
- 👤 Igor Palley
- 👤 Dusan C. Prevorsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:49
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0471; F41H5/0485; C; C08; C08J; C08J5/00; C08J5/04; C08J5/046; C08J5/06; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/227; C08J2363/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249933; Y10T428/249937; Y10T428/24994; Y10T428/249948; Y10T428/31504; Y10T428/31511; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
116 words
A composite comprising a matrix and: (a) a monofilament or multifilament fiber of polyethylene or polypropylene of weight average molecular weight at least about 500,000 having, in the case of polyethylene, a tenacity of at least about 15 g/denier and a tensile modulus of at least about 300 g/denier and, in the case of polypropylene, a tenacity of at least 8 g/denier and a tensile modulus of at least about 160 g/denier; and (b) a coating on the monofilament and on at least a portion of the filaments of the multifilament containing a polymer having ethylene or propylene crystallinity, said coating being present in an amount between about 0.1% and about 200%, by weight of fiber.
Claim 2
Dependent Claim
116 words
A composite comprising a matrix and: (a) a monofilament or multifilament fiber of polyethylene or polypropylene of weight average molecular weight at least about 500,000 having, in the case of polyethylene, a tenacity of at least about 15 g/denier and a tensile modulus of at least about 300 g/denier and, in the case of polypropylene, a tenacity of at least 8 g/denier and a tensile modulus of at least about 160 g/denier; and (b) a coating on the monofilament and on at least a portion of the filaments of the multifilament containing a polymer having ethylene or propylene crystallinity, said coating being present in an amount between about 0.1% and about 200%, by weight of fiber.
Claim 3
Dependent Claim
12 words
The composite of claim 1 wherein said matrix is a thermoplastic polymer.
Claim 4
Dependent Claim
12 words
The composite of claim 1 wherein said matrix is a thermosetting polymer.
Claim 5
Dependent Claim
11 words
The composite of claim 1 wherein said matrix is an elastomer.
Claim 6
Dependent Claim
21 words
The composite of claim 1 wherein said coating is an ethylene copolymer having at least about 10 volume percent ethylene crystallinity.
Claim 7
Dependent Claim
12 words
The composite of claim 5 wherein said matrix is an epoxy matrix.
Claim 8
Dependent Claim
13 words
The composite of claim 5 wherein said matrix is an unsaturated polyester matrix.
Claim 9
Dependent Claim
12 words
The composite of claim 5 wherein said matrix is a polyurethane matrix.
Claim 10
Dependent Claim
12 words
The composite of claim 1 wherein said fiber is a polyethylene multifilament.
Claim 11
Dependent Claim
18 words
The composite of claim 9 wherein said polyethylene has a weight average molecular weight at least about 1,000,000.
Claim 12
Dependent Claim
25 words
The composite of claim 9 wherein said polyethylene has tenacity of at least about 25 g/denier and a modulus of at least about 750 g/denier.
Claim 13
Dependent Claim
26 words
The composite of claim 9 wherein said polyethylene has a tenacity of at least about 30 g/denier and a modulus of at least about 1000 g/denier.
Claim 14
Dependent Claim
17 words
The composite of claim 12 wherein said polyethylene has a modulus of at least about 1500 g/denier.
Claim 15
Dependent Claim
10 words
The composite of claim 1 wherein said coating is polyethylene.
Claim 16
Dependent Claim
19 words
The composite of claim 14 wherein said polyethylene coating has specific density of between about 0.90 and about 0.94.
Claim 17
Dependent Claim
19 words
The composite of claim 14 wherein said polyethylene coating has a specific density between about 0.94 and about 0.98.
Claim 18
Dependent Claim
18 words
The composite of claim 1 wherein said ethylene copolymer has at least about 25 volume percent ethylene crystallinity.
Claim 19
Dependent Claim
12 words
The composite of claim 1 wherein said fiber is a polypropylene multifilament.
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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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |