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US3793229A Expired / Lapsed US ⏱️ 0.0 years remaining

Aluminum fluoride-based catalyst for the gas-phase fluorination of hydrocarbons

Assignee: Montedison SpA
•
Filing: 1971-06-08
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Granted: 1974-02-19
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Expires: 1991-06-08
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Abstract

Abstract A CATALYST IS DISCLOSED FOR PREPARING FLUORINATED OR CHLOROFLUORINATED HYDROCARBONS BY FLUORINATION OR CHLOREFLUORINATION OR DISPROPORTIONATION REACTIONS OR CHLOPHASE, WHICH CATALYST COMPRISES ALUMINUM FLUORIDE CONTAINING MINOR QUANTITIES OF ZINC, CHROMIUM, NICKEL AND PREFEABLY ALSO IRON COMPOUNDS WHICH ARE PRESENT IN QUANTITIES CORRESPONDING TO THE FOLLOWING PRECENTAGES BY WEIGHT OF METAL BASED ON THE TOTAL: FROM 0.05 TO 5% ZN, FROM 0.05 TO 5% CR, FROM 0.05 TO 5% NI, AND UP TO 3% FE. THE ZINCE, CHROMIUM, NICKEL AND IRON, IF ANY, ARE PRESENT AT LEAST PARTLY IN THE FORM OF HALIDES, IN PARTICULAR FLUORIDES, OR OXIDES OR OXY-HALIDES. A PROCESS FOR PARPARING THE CATALYST IS DISCLOSED, AS WELL AS VARIOUS DETAILS RELATING TO THE AFORESAID PROCESS FOR USING THE CATALYST.

Inventors

  • 👤 G Groppelli
  • 👤 M Vecchio
  • 👤 V Fattore
  • 👤 L Lodi
  • 👤 R Covini

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 18:09
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/37; B; B01; B01J; B01J27/00; B01J27/06; C07C17/013; C07C17/02; C07C17/04; C07C17/093; C07C17/20; C07C17/202; C07C17/206

Claims Analysis

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References Cited (Backward Citations)

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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) 1977-02-18 1977-08-20 1978-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-18 1981-08-20 1982-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-18 1985-08-20 1986-02-19 $7700.00 Window Closed / Lapsed

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