US3565824A
Expired / Lapsed
US
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Catalyst for setting finishes on cellulosic textiles
Assignee: United States Department of Agriculture
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Filing: 1968-08-06
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Granted: 1971-02-23
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Expires: 1988-08-06
Abstract
Abstract A SYNERGISTIC CATALYST COMPOSITION FOR SETTING FINISHES OF FORMALDEHYDE AND WATER-SOLUBLE FORMALDEHYDE-AMIDE CONDENSATES ON CELLULOSIC FIBROUS MATERIALS IS PROVIDED. THE CATALYST COMPOSITION COMPRISES ABOT FROM 25 TO 75 PARTS, BY WEIGHT, OF AN MAGNESIUM HALIDE, SUCH AS MAGNESIUM CHLORIDE HEXAHYDRATE, AND ABOUT FROM 75 TO 25 PARTS, BY WEIGHT, OR AN ORGANIC ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROXYL AND ALKOXYL SUBSTITUTED CARBOXYLIC ACIDS, SUCH AS CITRIC, TARTARIC ACID, METHOXYACETIC ACID, HYDROXYBUTYRIC ACID, AND GLYCOLIC ACID.
Inventors
- 👤 Andrew G Pierce Jr
- 👤 John G Frick Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:58
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/02; B01J31/04; D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3005; H03G3/301
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |