US3040076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of colorless or only slightly colored addition products of alkylene oxides
Assignee: Hoechst AG
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Filing: 1959-05-28
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Granted: 1962-06-19
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Expires: 1979-05-28
Abstract
No abstract record available.
Inventors
- 👤 Seidel Willy
- 👤 Knoblauch Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:57
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C29/149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN THE PROCESS OF REACTING AN ORGANIC COMPOUND CONTAINING AT LEAST ONE REACTIVE HYDROGEN ATOM WITH AN ALIPHATIC ALKYLENE OXIDE, THE IMPROVEMENT WHIHC COMPRISES ADDING TO THE REACTION MIXTURE A REDUCING AGENT OF THE GROUP CONSISTING OF HYDRAZINE, HYDROXYLAMINE, SALTS OF SAID COMPOUNDS, HYDRAZINE HYDRATE, PHOSPHOROUS ACID, HYPOPHOSPHOROUS ACID, SALTS AND ESTERS OF SAID ACIDS, HYPOSULFITE OF SODA AND MIXTURES OF THESE COMPOUNDS IN AN AMOUNT OF UP TO 2% BY WEIGHT REFERRED TO THE ORGANIC COMPOUND CONTAINING REACTIVE HYDROGEN ATOM, WHEREIN, WHEN THE COMPOUND CONTAINING HYDROGEN ATOM IS ACIDIC, AN ACID REDUCING AGENT IS USED AND, WHEN THE COMPOUND IS BASIC, A BASIC REDUCING AGENT IS USED.
Claim 2
Dependent Claim
108 words
IN THE PROCESS OF REACTING AN ORGANIC COMPOUND CONTAINING AT LEAST ONE REACTIVE HYDROGEN ATOM WITH AN ALIPHATIC ALKYLENE OXIDE, THE IMPROVEMENT WHIHC COMPRISES ADDING TO THE REACTION MIXTURE A REDUCING AGENT OF THE GROUP CONSISTING OF HYDRAZINE, HYDROXYLAMINE, SALTS OF SAID COMPOUNDS, HYDRAZINE HYDRATE, PHOSPHOROUS ACID, HYPOPHOSPHOROUS ACID, SALTS AND ESTERS OF SAID ACIDS, HYPOSULFITE OF SODA AND MIXTURES OF THESE COMPOUNDS IN AN AMOUNT OF UP TO 2% BY WEIGHT REFERRED TO THE ORGANIC COMPOUND CONTAINING REACTIVE HYDROGEN ATOM, WHEREIN, WHEN THE COMPOUND CONTAINING HYDROGEN ATOM IS ACIDIC, AN ACID REDUCING AGENT IS USED AND, WHEN THE COMPOUND IS BASIC, A BASIC REDUCING AGENT IS USED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |