Patent US4721650A successfully refreshed from Google Patents.
US4721650A
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Partially oriented nylon yarn and process
Assignee: Solutia Inc
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Filing: 1986-12-17
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Granted: 1988-01-26
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Expires: 2006-12-17
Abstract
Abstract A polyamide (preferably nylon 66) partially oriented feed yarn contains a small amount of branching agent and has an elongation between 45 and 150%. The feed yarn can be textured by the friction twist process to yield a textured yarn having crimp development similar to yarn textured by the much more expensive pin twist method.
Inventors
- 👤 Walter J. Nunning
- 👤 LeMoyne W. Plischke
- 👤 Dror Selivansky
- 👤 John H. Southern
- 👤 Chester C. Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:43
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D01F1/00; D01F1/02; D01F1/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2927; Y10T428/2929
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
60 words
An apparel yarn suitable for use as a feed yarn for drawtexturing, said yarn having an elongation betwee 45% and 150% and comprising filaments consisting essentially of nylon 66 polymer containing between 0.01 and 1 mole percent of a branching agent and having an elongation at least 5% greater than that of an otherwise identical yarn containing no branching agent.
Claim 2
Dependent Claim
60 words
An apparel yarn suitable for use as a feed yarn for drawtexturing, said yarn having an elongation betwee 45% and 150% and comprising filaments consisting essentially of nylon 66 polymer containing between 0.01 and 1 mole percent of a branching agent and having an elongation at least 5% greater than that of an otherwise identical yarn containing no branching agent.
Claim 3
Dependent Claim
20 words
The yarn defined in claim 1, wherein said branching agent constitutes between 0.05 and 0.15 mol percent of said polymer.
Claim 4
Dependent Claim
19 words
The yarn defined in claim 1, wherein said yarn was spun at a spinning speed greater than 2200 MPM.
Claim 5
Dependent Claim
18 words
The yarn defined in claim 1, wherein said filaments have a normalized SAXS peak intensity greater than 1.1.
Claim 6
Dependent Claim
18 words
The yarn defined in claim 1, wherein said filaments have a normalized SAXS peak intensity greater than 1.3.
Claim 7
Dependent Claim
18 words
The yarn defined in claim 1, wherein said filaments have a normalized SAXS peak intensity greater than 1.75.
Claim 8
Dependent Claim
18 words
The yarn defined in claim 1, wherein said filaments have a lamellar dimensional product of at least 1.1.
Claim 9
Dependent Claim
18 words
The yarn defined in claim 5, wherein said filaments have a lamellar dimensional product of at least 1.3.
Claim 10
Dependent Claim
18 words
The yarn defined in claim 6, wherein said filaments have a lamellar dimensional product of at least 1.3.
Claim 11
Dependent Claim
18 words
The yarn defined in claim 6, wherein said filaments have a lamellar dimensional product of at least 1.75.
Claim 12
Dependent Claim
14 words
The yarn defined in claim 1, wherein said branching agent is a trifunctional amine.
Claim 13
Dependent Claim
12 words
The yarn defined in claim 1, wherein said branching agent is TAN.
Claim 14
Dependent Claim
13 words
The yarn defined in claim 1, wherein said branching agent is bis-hexamethylene triamine.
Claim 15
Dependent Claim
14 words
The yarn defined in claim 1, wherein said branching agent is a trifunctional acid.
Claim 16
Dependent Claim
13 words
The yarn defined in claim 1, wherein said branching agent is trimesic acid.
Claim 17
Dependent Claim
48 words
An apparel yarn suitable for use as a feed yarn for drawtexturing, said yarn having an elongation between 45% and 150%, comprising filaments consisting essentially of nylon 66 polymer containing between 0.01 and 1 mole percent branching agent and having a normalized crimp development of at least 1.05.
Claim 18
Dependent Claim
48 words
An apparel yarn suitable for use as a feed yarn for drawtexturing, said yarn having an elongation between 45% and 150%, comprising filaments consisting essentially of nylon 66 polymer containing between 0.01 and 1 mole percent branching agent and having a normalized crimp development of at least 1.05.
Claim 19
Dependent Claim
26 words
The yarn of claim 16 wherein said filaments have a normalized SAXS peak intensity greater than 1.1 and a lamellar dimensional product of at least 1.3.
Claim 20
Dependent Claim
15 words
The yarn of claim 17 wherein said normalized SAXS peak intensity is greater than 1.75.
Claim 21
Dependent Claim
13 words
The yarn of claim 17 wherein the branching agent is a trifunctional amine.
Claim 22
Dependent Claim
11 words
The yarn of claim 19 wherein the branching agent is TAN.
Claim 23
Dependent Claim
12 words
The yarn of claim 19 wherein the branching agent is bis-hexamethylene amine.
Claim 24
Dependent Claim
12 words
The yarn of claim 19 wherein the branching agent is trimesic acid.
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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) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |