US3855776A
Expired / Lapsed
US
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Synthetic thermoplastic multifilament yarns
Assignee: Asahi Kasei Corp
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Filing: 1972-06-19
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Granted: 1974-12-24
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Expires: 1992-06-19
Abstract
Abstract Synthetic thermoplastic multifilament yarns with improved quality in coherency and smoothness having at most 100 twists per meter carrying about 0.5 to 3.0 percent, based on the weight of the yarns, of a treating agent comprising essentially a lubricating agent, a self-emulsifying phosphorous-containing surface active agent and a polyacrylic sizing agent, the polyacylic size being present in about 0.02 to 0.25 percent, based on the weight of the yarns.
Inventors
- 👤 E Omura
- 👤 T Minami
- 👤 T Kusunose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:53
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/22; D02G3/40; D02G3/404; Y; Y10; Y10S; Y10S524/00; Y10S524/91; Y10S524/912; Y10S57/00; Y10S57/901
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
18 words
A SYNTHETIC THERMOPLASTIC MULTIFILAMENT YARN HAVING A MOST 100 TWISTS PER METER CARRYING ABOUT 0.2 TO 3.0 PERCENTT
Claim 2
Dependent Claim
18 words
A SYNTHETIC THERMOPLASTIC MULTIFILAMENT YARN HAVING A MOST 100 TWISTS PER METER CARRYING ABOUT 0.2 TO 3.0 PERCENTT
Claim 3
Dependent Claim
34 words
The synthetic thermoplastic multifilament yarn of claim 1 wherein the amount of the polyacrylic sizing agent adhering to the yarn is from about 0.075 to 0.175 percent based on the weight of the yarn.
Claim 4
Dependent Claim
27 words
The synthetic thermoplastic multifilament yarn of claim 1 wherein the amount of the polyacrylic sizing agent in the treating agent is about 4 to 8% by weight.
Claim 5
Dependent Claim
17 words
The synthetic thermoplastic multifilament yarn of claim 1 wherein said treating agent additionally contains an antistatic agent.
Claim 6
Dependent Claim
140 words
A process for producing synthetic thermoplastic multifilament yarns having improved coherency and smoothness which comprises, prior to drawing, treating undrawn synthetic thermoplastic multifilament yarns with a treating agent comprising about 5 to 68 percent by weight of a liquid, synthetic yarn lubricating agent, about 30 to 80 percent by weight of a self-emulsifying organic phosphorus-containing surface active agent having a HLB oF from about 4 to 15 and about 2 to 15 percent by weight of a polyacrylic sizing agent so that the amount of said treating agent adhering to said yarns is from about 0.5 to 3.0 percent based on the weight of the yarns and the amount of said polyacrylic sizing agent adhering to said yarns is from about 0.02 to 0.25 percent based on the weight of the yarns, and thereafter hot drawing and winding said yarns.
Claim 7
Dependent Claim
140 words
A process for producing synthetic thermoplastic multifilament yarns having improved coherency and smoothness which comprises, prior to drawing, treating undrawn synthetic thermoplastic multifilament yarns with a treating agent comprising about 5 to 68 percent by weight of a liquid, synthetic yarn lubricating agent, about 30 to 80 percent by weight of a self-emulsifying organic phosphorus-containing surface active agent having a HLB oF from about 4 to 15 and about 2 to 15 percent by weight of a polyacrylic sizing agent so that the amount of said treating agent adhering to said yarns is from about 0.5 to 3.0 percent based on the weight of the yarns and the amount of said polyacrylic sizing agent adhering to said yarns is from about 0.02 to 0.25 percent based on the weight of the yarns, and thereafter hot drawing and winding said yarns.
Claim 8
Dependent Claim
14 words
The process of claim 5 wherein the treating agent contains additionally an antistatic agent.
Claim 9
Dependent Claim
35 words
The process of claim 5 wherein the treating agent is employed in the form of a dispersion in water with a concentration of said treating agent being from about 10 to 25 percent by weight.
Claim 10
Dependent Claim
34 words
The process of claim 7 wherein the dispersion in water is applied to the undrawn multifilament yarns which is being taken up at a rate of from about 600 to 5,000 meters per minute.
Claim 11
Dependent Claim
18 words
The process of claim 8 wherein the synthetic thermoplastic material constituting said yarn is polyamide, polyester or polypropylene.
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |