Patent US2885443A successfully refreshed from Google Patents.
US2885443A
Expired / Lapsed
US
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Water-soluble acetals of glutaralde-hyde and method of making same
Assignee: QUAKER CHEMICAL PRODUCTS Corp
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Filing: 1956-04-09
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Granted: 1959-05-05
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Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:43
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/137
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
THE METHOD OF MAKING A WATER-SOLUBLE CONDENSATION PRODUCT WHICH COMPRISES HEATING UNDER ACIDIC AONDITIONS 2-ETHOXY-2,3-DIHYDROPYRANE WITH AN ALCOKOL SELECTED FROM THE GROUP CONSISTING OF METHANOL AND ETHANOL AND ALSO A POLYOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL DIETHYLENE GLYCOL, DIPROPYLENE GLYCOL, AND GLYCERINE UNTIL A WATER-SOLUBLE PRODUCT IS FORMED.
Claim 2
Independent Claim
53 words
THE METHOD OF MAKING A WATER-SOLUBLE CONDENSATION PRODUCT WHICH COMPRISES HEATING UNDER ACIDIC AONDITIONS 2-ETHOXY-2,3-DIHYDROPYRANE WITH AN ALCOKOL SELECTED FROM THE GROUP CONSISTING OF METHANOL AND ETHANOL AND ALSO A POLYOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL DIETHYLENE GLYCOL, DIPROPYLENE GLYCOL, AND GLYCERINE UNTIL A WATER-SOLUBLE PRODUCT IS FORMED.
Claim 3
Dependent Claim
18 words
A WATER-SOLUBLE ACETAL OF GLUTARALDEHYDE, METHANOL AND DIETHYLENE GLYCOL MADE IN ACCORDANCE WITH THE METHOD OF CLAIM 1.
Claim 4
Dependent Claim
57 words
THE METHOD OF MAKING A WATER-SOLUBLE CONDENSATION PRODUCT WHICH COMPRISES HEATING UNDER ACIDIC CONDITIONS 2-ETHOXY-2,3-DIHYDROPYRANE WITH A POLYOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, POPYLENE GLYCOL, DIETHYLENE GLYCOL, DIPROPYLENE GLYCOL, AND GLYCERINE UNTIL A WATER-SOLUBLE PRODUCT IS FORMED. 49 A WATER-SOLUBLE OF GLUTARALDEHYDE AND DIETHYLENE GLYCOL MADE IN ACCORDANCE WITH THE METHOD OF CLAIM 3.
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) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |