US4626467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Branched polyolefin as a quench control agent for spin melt compositions
Assignee: FiberVisions Inc
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Filing: 1985-12-16
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Granted: 1986-12-02
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Expires: 2005-12-16
Abstract
Abstract A method for minimizing air-quench dependency and improving tolerance to high speed spinning of polyolefin spin melt compositions by incorporating an active amount of polyolefin additive having a Branching Index of about 0.20-0.90; plus corresponding spin melt composition and yarn product.
Inventors
- 👤 Barry J. Hostetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:33
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/44; D01F6/46; D01F1/00; D01F1/02; D04; D04H; D04H1/00; D04H1/40; D04H1/54; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T442/00; Y10T442/60; Y10T442/637; Y10T442/681; Y10T442/69
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
40 words
A method for increasing efficiency and flexibility of an air-quench-dependent spin melt compositions, comprising incorporating within said spin melt compositions an active amount of at least one branched polyolefin additive having a Branching Index within the range of about 0.20-0.90.
Claim 2
Independent Claim
40 words
A method for increasing efficiency and flexibility of an air-quench-dependent spin melt compositions, comprising incorporating within said spin melt compositions an active amount of at least one branched polyolefin additive having a Branching Index within the range of about 0.20-0.90.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein spin melt composition comprises at least one linear base polymer selected from the group consisting of extrudable polypropylene, polyethylene, polyester and extrudable resin.
Claim 4
Dependent Claim
25 words
The method of claim 2 wherein the branched polyolefin additive is present at a concentration of about 0.5%-90% by weight based on total spin melt.
Claim 5
Dependent Claim
21 words
The method of claim 3 wherein long chain branched polyolefin additive is added in a concentration of about 1%-20% by weight.
Claim 6
Dependent Claim
33 words
The method of claim 4 wherein the branched polyolefin additive is a polypropylene or a polyethylene, having a branching index of about 0.20-0.40 and present in a concentration of about 1%-10% by weight.
Claim 7
Dependent Claim
34 words
The method of claim 4 wherein the branched polyolefin additive is a polypropylene or a polyethylene, having a branching index of about 0.40-0.60 and is present in a concentration of about 10%-20% by weight.
Claim 8
Dependent Claim
34 words
The method of claim 4 wherein the branched polyolefin additive is a polypropylene or a polyethylene having a branching index of about 0.60-0.90 and is present in a concentration of about 20%-90% by weight.
Claim 9
Dependent Claim
19 words
The method of claim 1 wherein the branched polyolefin additive has a weight average molecular weight of about 150,000-1,000,000.
Claim 10
Dependent Claim
19 words
The method of claim 4 wherein the branched polyolefin additive has a weight average molecular weight of about 150,000-400,000.
Claim 11
Dependent Claim
40 words
A polyolefin spin melt composition comprising at least one linear base polyolefin and an active amount of at least one branched chain polyolefin additive having a Branching Index of about 0.20-0.90 and a weight average molecular weight of about 150,000-1,000,000.
Claim 12
Dependent Claim
40 words
A polyolefin spin melt composition comprising at least one linear base polyolefin and an active amount of at least one branched chain polyolefin additive having a Branching Index of about 0.20-0.90 and a weight average molecular weight of about 150,000-1,000,000.
Claim 13
Dependent Claim
22 words
The spin melt composition of claim 10 wherein the branched chain polyolefin additive has a weight average molecular weight of about 150,000-400,000.
Claim 14
Dependent Claim
49 words
The spin melt composition of claim 10 wherein the linear base polyolefin component is a polypropylene or a polyethylene and the branched chain polyolefin additive is a polypropylene or a polyethylene having a branching index of from about 0.20-0.40, and present in a concentration of about 0.5%-10% by weight.
Claim 15
Dependent Claim
49 words
The spin melt composition of claim 10 wherein the linear base polyolefin component is a polypropylene or a polyethylene and the branched chain polyolefin is a polypropylene or a polyethylene, having a branching index of from about 0.40-0.60, and is present in a concentration of about 10%-20% by weight.
Claim 16
Dependent Claim
48 words
The spin melt composition of claim 10 wherein the linear base polyolefin component is a polypropylene or a polyethylene and the branched chain polyolefin is a polypropylene or polyethylene having a branching index of from about 0.60-0.90, and is present in a concentration of about 20%-90% by weight.
Claim 17
Dependent Claim
12 words
Polyolefin filament yarn obtained in accordance with the method of claim 1.
Claim 18
Dependent Claim
11 words
Polyolefin yarn obtained in accordance with the method of claim 2.
Claim 19
Dependent Claim
11 words
Polyolefin yarn obtained in accordance with the method of claim 3.
Claim 20
Dependent Claim
11 words
Polyolefin yarn obtained in accordance with the method of claim 4.
Claim 21
Dependent Claim
11 words
Polyolefin yarn obtained in accordance with the method of claim 8.
Claim 22
Dependent Claim
12 words
Nonwoven fabric utilizing a web comprising of the polyolefin of claim 15.
Claim 23
Dependent Claim
13 words
Nonwoven fabric utilizing a low temperature web comprising the polyolefin of claim 16.
Claim 24
Dependent Claim
16 words
Nonwoven fabric utilizing as thermal binder a low temperature web comprising the polyolefin of claim 18.
Claim 25
Dependent Claim
16 words
Nonwoven fabric utilizing as thermal binder a low temperature web comprising the polyolefin of claim 19.
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) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |