Patent US3900887A successfully refreshed from Google Patents.
US2586767A
Expired / Lapsed
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Method for producing alkylene oxide condensation products
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-01-31
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Granted: 1952-02-19
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Expires: 1968-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
B; B01; B01J; B01J10/00; C; C09; C09F; C09F1/00; C07; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF PRODUCING CONDENSATION PRODUCTS WHICH COMPRISES CONTINUOUSLY INTRODUCING-AN UNSUBSTITUTED ALKYLENE OXIDE WHICH BOILS BELOW 200* C. INTO A REACTION ZONE AT SUCH A RATE THAT THE PRESSURE IN SAID ZONE IS MAINTAINED SUBSTANTIALLY CONSTANT, SPRAYING IN A FINELY DIVIDED LIQUID FORM INTO SAID ZONE AN ORGANIC COMPOUND CONTAINING AT LEAST ONE REACTIVE HYDROGEN ATOM AND AT LEAST SIX CARBON ATOMS WHICH THEN REACTS WITH A PORTION OF SAID ALKYLENE OXIDE, COOLING AND CONTINUOUSLY RECYCLING AND SPRAYING THE RESULTING PRODUCTS INTO SAID ZONE FOR FURTHER REACTION UNTIL A PREDETERMINED NUMBER OF ALKYLENE OXIDE GROUPS HAVE BEEN INTRODUCED INTO SAID COMPOUND, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, CARBOXYL, AMINO AND MERCAPTO COMPOUNDS, AND SAID COOLING BEING SUF-
Claim 2
Independent Claim
122 words
THE METHOD OF PRODUCING CONDENSATION PRODUCTS WHICH COMPRISES CONTINUOUSLY INTRODUCING-AN UNSUBSTITUTED ALKYLENE OXIDE WHICH BOILS BELOW 200* C. INTO A REACTION ZONE AT SUCH A RATE THAT THE PRESSURE IN SAID ZONE IS MAINTAINED SUBSTANTIALLY CONSTANT, SPRAYING IN A FINELY DIVIDED LIQUID FORM INTO SAID ZONE AN ORGANIC COMPOUND CONTAINING AT LEAST ONE REACTIVE HYDROGEN ATOM AND AT LEAST SIX CARBON ATOMS WHICH THEN REACTS WITH A PORTION OF SAID ALKYLENE OXIDE, COOLING AND CONTINUOUSLY RECYCLING AND SPRAYING THE RESULTING PRODUCTS INTO SAID ZONE FOR FURTHER REACTION UNTIL A PREDETERMINED NUMBER OF ALKYLENE OXIDE GROUPS HAVE BEEN INTRODUCED INTO SAID COMPOUND, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, CARBOXYL, AMINO AND MERCAPTO COMPOUNDS, AND SAID COOLING BEING SUF-
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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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |