Patent US3974321A successfully refreshed from Google Patents.
US3974321A
Expired / Lapsed
US
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Yarn sizing process and product
Assignee: Diamond Shamrock Corp
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Filing: 1974-06-20
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Granted: 1976-08-10
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Expires: 1994-06-20
Abstract
Abstract Synthetic sizes for use on yarns in water jet looms are prepared by copolymerizing methacrylic acid with from about 3% by weight to about 15% by weight of acrylic acid or vinylethoxytetraethylene glycol as the comonomer. These sizes are useful as nylon warp sizes in water jet looms. They have the desired adhesion to nylon and water resistance plus nonadhesion to steel parts on the loom.
Inventors
- 👤 Joseph J. Baron, Jr.
- 👤 Sherman Krefting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:29
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
A process for preparing sized nylon yarn for use in a water jet loom comprising treating nylon yarn with an amount of synthetic size comprising an aqueous solution of a copolymer comprising from about 97% to about 85% by weight of methacrylic acid and from about 3% to about 15% by weight of acrylic acid, the amount of size being sufficient to size the yarn and thereafter drying the yarn so that the size adheres to the yarn, the sized yarn is water resistant and does not adhere to steel parts of the loom.
Claim 2
Dependent Claim
94 words
A process for preparing sized nylon yarn for use in a water jet loom comprising treating nylon yarn with an amount of synthetic size comprising an aqueous solution of a copolymer comprising from about 97% to about 85% by weight of methacrylic acid and from about 3% to about 15% by weight of acrylic acid, the amount of size being sufficient to size the yarn and thereafter drying the yarn so that the size adheres to the yarn, the sized yarn is water resistant and does not adhere to steel parts of the loom.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein from about 0.5% to about 4% of the copolymer by weight dry basis on weight of fiber is present on the nylon yarn.
Claim 4
Dependent Claim
30 words
The process of claim 1 wherein about 90% by weight of methacrylic acid and about 10% by weight of acrylic acid are present in the copolymer on the nylon yarn.
Claim 5
Dependent Claim
33 words
A sized yarn for use in a water jet loom comprising a nylon yarn treated with an amount of the aqueous solution of claim 1 sufficient to size the yarn and thereafter dried.
Claim 6
Dependent Claim
30 words
The yarn of claim 4 where from about 0.5% to about 4% of the copolymer by weight dry basis on weight of fiber is present on the dried nylon yarn.
Claim 7
Dependent Claim
27 words
The nylon yarn of claim 4 wherein about 90% by weight of methacrylic acid and about 10% by weight of acrylic acid are present in the copolymer.
References Cited (Backward Citations)
US2253146A
Cited
US2904541A
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US3000758A
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US2945013A
Cited
GB1011637A
Cited
US3590106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |