US4093147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat nylon 66 yarn having a soft hand, and process for making same
Assignee: Monsanto Co
•
Filing: 1975-11-04
•
Granted: 1978-06-06
•
Expires: 1995-11-04
Abstract
Abstract Nylon 66 yarn having particular stress-strain properties, typically also having a soft, luxuriant hand in fabric form. As compared to conventional nylon 66 with comparable boiling water shrinkage, the novel yarn exhibits a higher modulus at break, a lower modulus at 10% elongation, a positive stress index, and excellent denier uniformity. The process involves subjecting the yarn, within 0.016 to 0.11 seconds after solidification of the filaments, to a tension of 0.2 and 1.5 grams per final denier and heating the yarn to a temperature between 50 DEG and 250 DEG C. long enough to reduce yarn retraction below 1%.
Inventors
- 👤 James E. Bromley
- 👤 Michael M. McNamara
- 👤 Wayne T. Mowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:45
CPC Classifications
D; D02; D02J; D02J13/00; D02J13/005; D01; D01D; D01D5/00; D01D5/12; D01D5/16; D01F; D01F6/00; D01F6/58; D01F6/60; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
44 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, an initial modulus greater than 15 g/d, a positive stress index ∝, and a retraction less than 1%.
Claim 2
Dependent Claim
44 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, an initial modulus greater than 15 g/d, a positive stress index ∝, and a retraction less than 1%.
Claim 3
Dependent Claim
13 words
The bobbin defined in claim 1, wherein said stress index ∝ exceeds 15.
Claim 4
Dependent Claim
17 words
The bobbin defined in claim 2, wherein said yarn has a 10% modulus less than 17 g/d.
Claim 5
Dependent Claim
16 words
The bobbin defined in claim 1, wherein said yarn has a modulus ratio less than 3.
Claim 6
Dependent Claim
17 words
The bobbin defined in claim 1, wherein said yarn has a shrinkage S between 1 and 6%.
Claim 7
Dependent Claim
18 words
The bobbin defined in claim 1, wherein said yarn has a Uster unevenness of less than 0.5% U.
Claim 8
Dependent Claim
18 words
The bobbin defined in claim 1, wherein said yarn has an elongation at break between 25 and 60%.
Claim 9
Dependent Claim
46 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, an initial modulus of at least 17 g/d, a modulus ratio less than 3, and a retraction less than 1%.
Claim 10
Dependent Claim
46 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, an initial modulus of at least 17 g/d, a modulus ratio less than 3, and a retraction less than 1%.
Claim 11
Dependent Claim
18 words
The bobbin defined in claim 8, wherein said yarn has a final modulus of at least 7.5 g/d.
Claim 12
Dependent Claim
18 words
The bobbin defined in claim 8, wherein said yarn has an initial modulus of at least 21 g/d.
Claim 13
Dependent Claim
17 words
The bobbin defined in claim 8, wherein said yarn has a shrinkage S between 1 and 6%.
Claim 14
Dependent Claim
18 words
The bobbin defined in claim 8, wherein said yarn has a Uster unevenness of less than 0.5% U.
Claim 15
Dependent Claim
18 words
The bobbin defined in claim 8, wherein said yarn has an elongation at break between 25 and 60%.
Claim 16
Dependent Claim
46 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, an initial modulus greater than 15 g/d, a 10% modulus less than 22 g/d, and a retraction less than 1%.
Claim 17
Dependent Claim
46 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, an initial modulus greater than 15 g/d, a 10% modulus less than 22 g/d, and a retraction less than 1%.
Claim 18
Dependent Claim
15 words
The bobbin defined in claim 14, wherein said 10% modulus is less than 17 g/d.
Claim 19
Dependent Claim
18 words
The yarn defined in claim 14, wherein said yarn has a Uster unevenness of less than 0.5% U.
Claim 20
Dependent Claim
18 words
The yarn defined in claim 15, wherein said yarn has a Uster unevenness of less than 0.5% U.
Claim 21
Dependent Claim
16 words
The yarn defined in claim 14, wherein said yarn has an elongation between 35 and 80%.
Claim 22
Dependent Claim
52 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, a 10% modulus less than 22 g/d, a final modulus greater than 7.5 g/d, a modulus ratio less than 3, and a retraction less than 1%.
Claim 23
Dependent Claim
52 words
A bobbin having wound thereon a flat nylon 66 yarn having a substantially constant cross sectional configuration along its length, a shrinkage S less than 8.5%, a 10% modulus less than 22 g/d, a final modulus greater than 7.5 g/d, a modulus ratio less than 3, and a retraction less than 1%.
Claim 24
Dependent Claim
18 words
The bobbin defined in claim 19, wherein said yarn has an elongation at break between 35 and 60%.
Claim 25
Dependent Claim
15 words
The bobbin defined in claim 19, wherein said yarn has a positive stress index ∝.
Claim 26
Dependent Claim
18 words
The bobbin defined in claim 21, wherein said yarn has a stress index ∝ of at least 15.
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) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |