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US3642853A Expired / Lapsed US ⏱️ 0.0 years remaining

Synthesis of aluminum hydride and tertiary amine adducts thereof

Assignee: Millennium Petrochemicals Inc
•
Filing: 1968-12-18
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Granted: 1972-02-15
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Expires: 1988-12-18
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Abstract

Abstract A PROCESS IS PROVIDED FOR THE STEPWISE PREPARATION OF ALUMINUM HYDRIDE AND ITS TERTIARY AMINE ADDUCTS BY (1) SYNTHESIZING THE TRIMETHYLAMINE-ALANE ADDUCT FROM ALUMINUM, HYDROGEN AND TRIMETHYLAMINE IN THE PRESENCE OF A GROUP I-A OR GROUP II-A METAL CATALYST, (2) TRANSAMINATING THE TRIMETHYLAMINE-ALANE ADDUCT WITH ANOTHER TERTIARY AMINE TO FORM ANOTHER TERTRIARY AMINE-ALANE ADDUCT, AND (3) THERMALLY DECOMPOSING THE TERTIARY AMINE-ALANE ADDUCT IN THE PRESENCE OF A GROUP I-A OR GROUP II-A METAL HYDRIDE OR ORGANOMETALLIC COMPOUND CATALYST TO FORM ALANE AND THE TERTIARY AMINE. A PROCESS IS ALSO PROVIDED FOR SYNTHESIZING RELATIVELY STABLE TERTIARY AMINE-ALANE ADDUCTS FROM ALUMINUM, HYDROGEN AND THE CORRESPONDING TERTIARY AMINE IN THE PRESENCE OF A GROUP I-A OR GROUP II-A METAL CATALYST.

Inventors

  • 👤 Jawad H Murib
  • 👤 David Horvitz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 17:55
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/06; C07; C07F; C07F5/00; C07F5/06; C07F5/069

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) 1975-02-14 1975-08-16 1976-02-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-02-14 1979-08-16 1980-02-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-02-14 1983-08-16 1984-02-15 $7700.00 Window Closed / Lapsed

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