US2835696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of carbocyclic 1, 2-dicarboxylic acids and method of making the same
Assignee: Dow Chemical Co
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Filing: 1955-07-28
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Granted: 1958-05-20
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Expires: 1975-07-28
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Steinhauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:38
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/85; A61Q; A61Q19/00; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A WATER-SOLUBLE COMPOSITION COMPRISING AN UNSYMMETRICAL ESTER OF A CARBOCYCLIC 1,2-DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ACID AND HYDROGENATED PHTHALIC ACIDS HAVING FROM 8 TO 10 HYDROGEN ATOMS ON THE BENZENE NUCLEUS, WHEREIN ONE OF THE CARBOXYL GROUPS OF SAID ACID IS ESTERIFIED WITH A SATURATED ALIPHATIC GROUPS OF SAID ACID IS ESTERIFIED WITH A SATURATED ALIPHATIC MOLECULE AND THE OTHER CARBOXYL GROUP IS ESTERIFIED WITH A LINEAR POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT BETWEEN 300 AND 5000.
Claim 2
Dependent Claim
81 words
A WATER-SOLUBLE COMPOSITION COMPRISING AN UNSYMMETRICAL ESTER OF A CARBOCYCLIC 1,2-DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF PHTHALIC ACID AND HYDROGENATED PHTHALIC ACIDS HAVING FROM 8 TO 10 HYDROGEN ATOMS ON THE BENZENE NUCLEUS, WHEREIN ONE OF THE CARBOXYL GROUPS OF SAID ACID IS ESTERIFIED WITH A SATURATED ALIPHATIC GROUPS OF SAID ACID IS ESTERIFIED WITH A SATURATED ALIPHATIC MOLECULE AND THE OTHER CARBOXYL GROUP IS ESTERIFIED WITH A LINEAR POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT BETWEEN 300 AND 5000.
Claim 3
Independent Claim
41 words
A METHOD OF MAKING A WATER-SOLUBLE ESTER COMPOSITION WHICH COMPRISES CONDENSING FROM 7 TO 110 MOLECULAR PROPORTIONS OF ETHYLENE OXIDE WITH ONE MOLECULAR PROPORTION OF A MONOALKYL HYDROGEN ESTER OF CARBOCYCLIC 1,2-CARBOXYLIC ACID WHICH MONOALKYL HYDROGEN ESTER HAS THE GENERAL FORMULA:
Claim 4
Independent Claim
41 words
A METHOD OF MAKING A WATER-SOLUBLE ESTER COMPOSITION WHICH COMPRISES CONDENSING FROM 7 TO 110 MOLECULAR PROPORTIONS OF ETHYLENE OXIDE WITH ONE MOLECULAR PROPORTION OF A MONOALKYL HYDROGEN ESTER OF CARBOCYCLIC 1,2-CARBOXYLIC ACID WHICH MONOALKYL HYDROGEN ESTER HAS THE GENERAL FORMULA:
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |