US4563392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated extended chain polyolefin fiber
Assignee: Honeywell International Inc
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Filing: 1983-11-22
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Granted: 1986-01-07
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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
2026-10-26 10:06
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/227; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/2967
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
128 words
A coated polyolefin fiber having increased adhesion to matrix materials and increased transverse strength, said polyolefin fiber comprising: (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
128 words
A coated polyolefin fiber having increased adhesion to matrix materials and increased transverse strength, said polyolefin fiber comprising: (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
14 words
The coated polyolefin fiber of claim 1 wherein said fiber is a polyethylene monofilament.
Claim 4
Dependent Claim
14 words
The coated polyolefin fiber of claim 1 wherein said fiber is a polyethylene multifilament.
Claim 5
Dependent Claim
14 words
The coated polyolefin fiber of claim 1 wherein said fiber is a polypropylene monofilament.
Claim 6
Dependent Claim
14 words
The coated polyolefin fiber of claim 1 wherein said fiber is a polypropylene multifilament.
Claim 7
Dependent Claim
20 words
The coated polyolefin fiber of claim 3 wherein said polyethylene has a weight average molecular weight at least about 1,000,000.
Claim 8
Dependent Claim
29 words
The coated polyolefin fiber of claim 3 wherein said polyethylene fiber has a tenacity of at least about 20 g/denier and a modulus of at least about 500 g/denier.
Claim 9
Dependent Claim
28 words
The coated polyolefin fiber of claim 7 wherein said polyethylene has a tenacity of at least about 25 g/denier and a modulus of at least about 750 g/denier.
Claim 10
Dependent Claim
28 words
The coated polyolefin fiber of claim 8 wherein said polyethylene has a tenacity of at least about 30 g/denier and a modulus of at least about 1000 g/denier.
Claim 11
Dependent Claim
19 words
The coated polyolefin fiber of claim 9 wherein said polyethylene has a modulus of at least about 1500 g/denier.
Claim 12
Dependent Claim
36 words
The coated polyolefin fiber of claim 5 wherein said polypropylene has a molecular weight of at least about 1,000,000 a tenacity of at least about 15 g/denier and a modulus of at least about 200 g/denier.
Claim 13
Dependent Claim
12 words
The coated polyolefin fiber of claim 1 wherein said coating is polypropylene.
Claim 14
Dependent Claim
12 words
The coated polyolefin fiber of claim 3 wherein said coating is polyethylene.
Claim 15
Dependent Claim
21 words
The coated polyolefin fiber of claim 13 wherein said polyethylene coating has specific density of between about 0.90 and about 0.94.
Claim 16
Dependent Claim
21 words
The coated polyolefin fiber of claim 13 wherein said polyethylene coating has a specific density between about 0.94 and about 0.98.
Claim 17
Dependent Claim
22 words
The coated fiber of claim 3 wherein said coating is an ethylene copolymer having at least about 10 volume percent ethylene crystallinity.
Claim 18
Dependent Claim
20 words
The coated polyolefin fiber of claim 16 wherein said ethylene copolymer has at least about 25 volume percent ethylene crystallinity.
Claim 19
Dependent Claim
23 words
The coated polyolefin fiber of claim 1 wherein said coating is a propylene copolymer having at least about 10 volume percent propylene crystallinity.
Claim 20
Dependent Claim
20 words
The coated polyolefin fiber of claim 18 wherein said polypropylene coating has at least about 25 volume percent propylene crystallinity.
Claim 21
Dependent Claim
20 words
The coated polyolefin fiber of claim 1 or having between about 0.1 and about 100% coating by weight of fiber.
Claim 22
Dependent Claim
19 words
The coated polyolefin fiber of claim 20 having between about 5 and about 50% coating, by weight of fiber.
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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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |