US3061471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing hydrophobic fibers with graft copolymers of gelatinized starch and acrylates
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1960-03-02
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Granted: 1962-10-30
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Expires: 1980-03-02
Abstract
No abstract record available.
Inventors
- 👤 Charles E Brockway
- 👤 Dean W Christman
- 👤 Estes Reedus Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:46
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; C; C08; C08F; C08F251/00; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/83; C08G18/84; C08L; C08L3/00; C08L3/02; C09; C09J; C09J103/00; C09J103/02; C09J133/00; C09J133/04; C09J133/06; C09J133/08; D06M15/01; D06M15/03; D06M15/11; D06M15/21; D06M15/263; D06M15/267; C08L2666/00; C08L2666/02; C08L71/00; C08L71/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
IN THE PROCESS OF YARN SIZING THAT COMPRISES APPLYING TO A YARN AN AQUEOUS DISPERSION OF A SIZING COMPOUND AND DRYING THE YARN, THE IMPROVEMENT COMPRISING APPLYING, AS AND SIZING COMPOUND, A GRAFT COPOLYMER OF GELATINIZED STARCH OBTAINED BY REACTING SAID STARCH IN WATER, UNDER FREE-RADICAL POLYMERIZATION INITIATING CONDITIONS, WITH THE ACRYLIC ACID ESTER OF AN ALKANOL OF FROM 2 TO 4 CARBON ATOMS IN THE PRESENCE OF A FREE-RADICAL CATALYST, THE RATIO OF SAID STARCH TO SAID ACRYLIC ACID ESTER BEING IN THE RANGE OF 6:4 TO 1:19 DURING SAID REACTION.
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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |