US2765324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active polycarbamates
Assignee: Rohm and Haas Co
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Filing: 1953-05-26
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Granted: 1956-10-02
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Expires: 1973-05-26
Abstract
No abstract record available.
Inventors
- 👤 Warren D Niederhauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:45
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/405
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
A PROCESS FOR PREPARING POLYCARBOMATES WHICH COMPRISES REACTING IN ABOUT MOLAR PROPORTION BETWEEN 125* C. AND 175* C. WITH EVOLUTION OF ABOUT ONE MOLAR PROPORTION OF WATER A MONOCARBOXYLIC ACID OF THE STRUCTURE RCOOH, WHERE R IS A HYDROCARBON GROUP OF 7 TO 23 CARBON ATOMS, AND A POLYALKYLENEPOLYAMINE, NH2(ANH)XH, WHERE A IS AN ALKYLENE GROUP OF TWO TO THREE CARBON ATOMS WITH TWO CARBON ATOMS BETWEEN NITROGENS AND X IS AN INTEGER FROM THREE TO TEN, WHEREBY A POLYAMINOAMIDE IS FORMED, AND REACTING SAID POLYAMINOAMIDE WITH AN ALKYLENE CARBONATE, THE ALKYLENE GROUP OF WHICH CONTAINS TWO TO THREE CARBON ATOMS, THERE BEING REACTED THREE TO TEN MOLAR PROPORTIONS OF SAID CARBONATE, THE NUMBER OF MOLAR PROPORTIONS OF SAID CARBONATE BEING THE SAME AS THE NUMERICAL VALUE OF X.
Claim 2
Dependent Claim
129 words
A PROCESS FOR PREPARING POLYCARBOMATES WHICH COMPRISES REACTING IN ABOUT MOLAR PROPORTION BETWEEN 125* C. AND 175* C. WITH EVOLUTION OF ABOUT ONE MOLAR PROPORTION OF WATER A MONOCARBOXYLIC ACID OF THE STRUCTURE RCOOH, WHERE R IS A HYDROCARBON GROUP OF 7 TO 23 CARBON ATOMS, AND A POLYALKYLENEPOLYAMINE, NH2(ANH)XH, WHERE A IS AN ALKYLENE GROUP OF TWO TO THREE CARBON ATOMS WITH TWO CARBON ATOMS BETWEEN NITROGENS AND X IS AN INTEGER FROM THREE TO TEN, WHEREBY A POLYAMINOAMIDE IS FORMED, AND REACTING SAID POLYAMINOAMIDE WITH AN ALKYLENE CARBONATE, THE ALKYLENE GROUP OF WHICH CONTAINS TWO TO THREE CARBON ATOMS, THERE BEING REACTED THREE TO TEN MOLAR PROPORTIONS OF SAID CARBONATE, THE NUMBER OF MOLAR PROPORTIONS OF SAID CARBONATE BEING THE SAME AS THE NUMERICAL VALUE OF X.
Claim 3
Dependent Claim
5 words
POLYCARBAMATES OF THE GENERAL STRUCTURE
Claim 4
Dependent Claim
5 words
POLYCARBAMATES OF THE GENERAL STRUCTURE
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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |