US3834935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethoxylated polybutylene glycols as fiber lubricants
Assignee: Dow Chemical Co
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Filing: 1972-05-01
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Granted: 1974-09-10
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Expires: 1992-05-01
Abstract
Abstract VALUABLE FIBEER LUBRICANTS ARE COMPOUNDS OF THE FORMULA Y$(C4H8O)N-(C2H4O)M-H)X WHEREIN Y IS THE RESIDUE FORMED BY THE REMOVAL OF X ATOMS OF AVTIVE HYDROGEN FROM AN INITIATOR COMPOUND YHX, X IS AN INTEGER 1-5, N IS AN INTEGER AT LEAST 2, SUCH THAT THE TOTAL OXYBUTYLENE CONTENT, NX MOLES, IS ABOUT 6-50 AND M IS AN INTEGER, AT LEAST 1, SUCH THAT THE TOTAL OXYETHYLENE CONTENT, MX MOLES, IS ABOUT 2-200 OR MORE, N AND M BEING SO CHOSEN THAT THE OXYETHYLENE CONTENT CONSTITUTES ABOUT 20-75% BY WEIGHT OF THE TOTAL OXYALKYLENE CONTENT. THEY ARE ESPECIALLY USEFUL AS LUBRICANTS FOR SYNETHIC FIBERS, SUCH AS POLYESTER, POLYAMIDE AND ACRYLIC FIBERS.
Inventors
- 👤 R Symm
- 👤 B Barron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:39
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53; D06M13/00; D06M13/10; D06M13/152; D06M7/00; D06M2200/00; D06M2200/40; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |