US3028410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of polyhydroxy aromatic compounds
Assignee: Hooker Chemical Corp
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Filing: 1958-06-26
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Granted: 1962-04-03
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Zimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:32
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C37/00; C07C37/01; C07C37/055; C07C37/0555; C07C407/00; C07C45/00; C07C45/51; C07C45/53; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
THE PROCESS OF PRODUCING POLYHYDROXY AROMATIC COMPOUNDS WHICH COMPRISES: (1) REACTING AN ALKYL SUBSTITUTED AROMATIC HYDROXYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL SUBSTITUTED HYDROXY PHENYL AND ALKYL SUBSTITUTED POLYHYDROXY PHENYL, WHEREIN THE ALKYL GROUP CONTAINS A HYDROGEN ATOM ALPHA TO THE AROMATIC RING WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE, PHOSPHORIC ACID, PHOSPHORUS PENTOXIDE, ALIPHATIC ANHYDRIDES,AROMATICS ANHYDRIDES, ALIPHATIC ACID HALIDES, AROMATIC ACID HALIDES, ALIPHATIC ACIDS, AROMATIC ACIDS, MIXTURES OF DIMETHYL SULPHATE AND SODIUM HYDROXIDE, MIXTURES OF ALKALI METAL HYDROXIDES WITH AROMATIC HALIDES, AND MIXTURES OF ALKALI METAL HYDROXIDES WITH ALIPHATIC HALIDES, WHICH REACTS WITH THE HYDROXYL CONSTITUENT OF SAID ALKYL SUBSTITUTED AROMATIC HYDROXYL COMPOUND AND WHICH CONVERTS THE ALKYL SUBSTUTITED AROMATIC HYDROXYL COMPOUND INTO A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL SUBSTITUTED AROMATIC PHOSPHATES ETHERS AND ESTERS; (2) REDUCING THE PRESENCE OF UNREACTED ALKYL SUBSTITUTED AROMATIC HYDROXYL COMPOUND TO LESS THAN ONE PERCENT; (3) OXIDIZING THE RESULTANT PRODUCT AT THE ALKYL CONSTITUENT TO REPLACE THE ALPHA HYDROGEN WITH A HYDROPEROXIDE GROUP; AND (4) CLEAVING SAID PEROXIDIZED COMPOUND TO A POLYHYDROXY AROMATIC COMPOUND POSSESSING HYDROXY CONSTITUENTS AT THE SITES ON THE AROMATIC RING ORIGINALLY OCCUPIED BY THE HYDROXYL CONSTITUENT AND THE ALKYL GROUP WITH THE ALPHA HYDROGEN CONSTITUENT.
Claim 2
Dependent Claim
205 words
THE PROCESS OF PRODUCING POLYHYDROXY AROMATIC COMPOUNDS WHICH COMPRISES: (1) REACTING AN ALKYL SUBSTITUTED AROMATIC HYDROXYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL SUBSTITUTED HYDROXY PHENYL AND ALKYL SUBSTITUTED POLYHYDROXY PHENYL, WHEREIN THE ALKYL GROUP CONTAINS A HYDROGEN ATOM ALPHA TO THE AROMATIC RING WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS OXYCHLORIDE, PHOSPHORIC ACID, PHOSPHORUS PENTOXIDE, ALIPHATIC ANHYDRIDES,AROMATICS ANHYDRIDES, ALIPHATIC ACID HALIDES, AROMATIC ACID HALIDES, ALIPHATIC ACIDS, AROMATIC ACIDS, MIXTURES OF DIMETHYL SULPHATE AND SODIUM HYDROXIDE, MIXTURES OF ALKALI METAL HYDROXIDES WITH AROMATIC HALIDES, AND MIXTURES OF ALKALI METAL HYDROXIDES WITH ALIPHATIC HALIDES, WHICH REACTS WITH THE HYDROXYL CONSTITUENT OF SAID ALKYL SUBSTITUTED AROMATIC HYDROXYL COMPOUND AND WHICH CONVERTS THE ALKYL SUBSTUTITED AROMATIC HYDROXYL COMPOUND INTO A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL SUBSTITUTED AROMATIC PHOSPHATES ETHERS AND ESTERS; (2) REDUCING THE PRESENCE OF UNREACTED ALKYL SUBSTITUTED AROMATIC HYDROXYL COMPOUND TO LESS THAN ONE PERCENT; (3) OXIDIZING THE RESULTANT PRODUCT AT THE ALKYL CONSTITUENT TO REPLACE THE ALPHA HYDROGEN WITH A HYDROPEROXIDE GROUP; AND (4) CLEAVING SAID PEROXIDIZED COMPOUND TO A POLYHYDROXY AROMATIC COMPOUND POSSESSING HYDROXY CONSTITUENTS AT THE SITES ON THE AROMATIC RING ORIGINALLY OCCUPIED BY THE HYDROXYL CONSTITUENT AND THE ALKYL GROUP WITH THE ALPHA HYDROGEN CONSTITUENT.
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |