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US3028410A Expired / Lapsed US ⏱️ 0.0 years remaining

Synthesis of polyhydroxy aromatic compounds

Assignee: Hooker Chemical Corp
•
Filing: 1958-06-26
•
Granted: 1962-04-03
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Expires: 1978-06-26
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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)

US2671809A Cited
US2799695A Cited
US2799698A Cited

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

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