US3670489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textile yarn
Assignee: Eastman Kodak Co
•
Filing: 1969-07-28
•
Granted: 1972-06-20
•
Expires: 1989-07-28
Abstract
Abstract Textile yarn comprising oriented, crystalline fibers of poly(tetramethylene terephthalate) characterized by an improved combination of properties including a liveliness index of at least 0.25, and a toughness of at least 0.50 g./denier. Also disclosed is crimped staple textile fiber comprising oriented, crystalline, poly(tetramethylene terephthalate) characterized by a liveliness index of at least 0.25 and crush recovery greater than 50 percent.
Inventors
- 👤 Winston J Jackson Jr
- 👤 Marshall T Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:59
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/229; D01; D01F; D01F6/00; D01F6/58; D01F6/62; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2909; Y10T428/2913
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
23 words
Textile yarn of claim 1, wherein the fibers are capable of being dyed with disperse dyes without the use of a dye carrier.
Claim 2
Dependent Claim
17 words
Textile yarn of claim 1, wherein said fibers have a flow point of at least 216* C.
Claim 3
Dependent Claim
38 words
Textile yarn of claim 1, wherein said poly(tetramethylene terephthalate) is derived from at least 85 mole percent of terephthalic acid and up to 15 mole percent of a second dicarboxylic acid containing from three to 20 carbon atoms.
Claim 4
Dependent Claim
22 words
Textile yarn of claim 4 wherein said second dicarboxylic acid is selected from isophthalic acid, adipic acid, azelaic acid and 1,12-dodecanedicarboxylic acid.
Claim 5
Dependent Claim
36 words
Textile yarn of claim 1 wherein said poly(tetramethylene terephthalate) is derived from at least 85 mole percent of 1,4-butanediol and up to 15 mole percent of a second glycol containing from two to 20 carbon atoms.
Claim 6
Dependent Claim
18 words
Textile yarn of claim 6, wherein said second glycol is selected from ethylene glycol, neopentyl glycol and 1,4-cyclohexanedimethanol.
Claim 7
Dependent Claim
16 words
Textile yarn of claim 1, wherein the toughness of said fibers is at least 0.60 g./denier.
Claim 8
Dependent Claim
16 words
Textile yarn of claim 1, wherein said fibers have a liveliness index of at least 0.30.
Claim 9
Dependent Claim
17 words
Textile yarn of claim 3, wherein said fibers have a flow point of at least 220* C.
Claim 10
Dependent Claim
16 words
Textile yarn of claim 1, wherein said fibers have a tenacity of at least 3.0 g./denier.
Claim 11
Dependent Claim
34 words
Textile fabric having excellent liveliness, resilience and toughness properties, said fabric including yarn comprising poly(tetramethylene terephthalate) fibers, said fibers having a toughness of at least 0.50 g./denier, and a liveliness index greater than 0.25.
Claim 12
Dependent Claim
14 words
Textile fabric of claim 12, wherein said fabric is dyed with a disperse dye.
Claim 13
Dependent Claim
23 words
Crimped staple textile fiber comprising poly(tetramethylene terephthalate), said fiber having a liveliness index greater than 0.25 and crush recovery greater than 50 percent.
Claim 14
Dependent Claim
25 words
Crimped staple textile fiber of claim 14, wherein said fiber is capable of being dyed with disperse dyes without the use of a dye carrier.
Claim 15
Dependent Claim
40 words
Crimped staple textile fiber of claim 14, wherein said poly(tetramethylene terephthalate) is derived from at least 85 mole percent of terephthalic acid and up to 15 mole percent of a second dicarboxylic acid containing from three to 20 carbon atoms.
Claim 16
Dependent Claim
24 words
Crimped staple textile fiber of claim 16, wherein said second dicarboxylic acid is selected from isophthalic acid, adipic acid, azelaic acid and 1,12-dodecanedicarboxylic acid.
Claim 17
Dependent Claim
39 words
Crimped staple textile fiber of claim 14, wherein said poly(tetramethylene terephthalate) polyester is derived from at least 85 mole percent of 1,4-butanediol and up to 15 mole percent of a second glycol containing from two to 20 carbon atoms.
Claim 18
Dependent Claim
20 words
Crimped staple textile fiber of claim 18, wherein said second glycol is selected from ethylene glycol, neopentyl glycol and 1,4-cyclohexanedimethanol.
Claim 19
Dependent Claim
18 words
Crimped staple textile fiber of claim 1, wherein the toughness of said fiber is at least 0.60 g./denier.
Claim 20
Dependent Claim
18 words
Crimped staple textile fiber of claim 1, wherein said fiber has a liveliness index of at least 0.27.
Claim 21
Dependent Claim
17 words
Crimped staple textile fiber of claim 1, wherein said fiber has tenacity of at least 3.0 g./denier.
Claim 22
Dependent Claim
32 words
A spun textile yarn comprising fibers made from poly(tetramethylene terephthalate), said fibers having a toughness greater than 0.50 g./denier, a liveliness index greater than 0.25, and crush recovery greater than 50 percent.
References Cited (Backward Citations)
US2503251A
Cited
US2589687A
Cited
US2533455A
Cited
US2534028A
Cited
US2594144A
Cited
US2973339A
Cited
US2973332A
Cited
US3025266A
Cited
US3013914A
Cited
US3350488A
Cited
US3409597A
Cited
US3448087A
Cited
US3523923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |