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US3636174A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for preparing cyclododecatriene

Assignee: Asahi Kasei Corp
•
Filing: 1970-08-06
•
Granted: 1972-01-18
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Expires: 1990-08-06
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Abstract

Abstract PROCESS FOR PREPARING CYLODODECATRIENE BY CYCLIZABLY TRIMERZING 1,3-BUTADIENE WHCIH COMPRISES USING A BINARY CATALYST OBTAINED BY REACTING AT A TEMPERTURE IN THE RANGE FROM 5* TO 70*C. A MIXTURE OF THE TWO CATALYTIC COMPONENTS, (1) A SECONDARY OF TERTIARY ALKOXYTITANIUM COMPOUND REPRESENTED BY THE GENERAL FORMULA TI(OCRIRIIRIII)NX4-N WHEREIN N IS A POSITIVE INTEGER FROM 1 TO 4, X IS HALOGEN ALKOXY OR PHENOXY GROUPS RI IS HYDROGEN OR ALKYL GROUP AND RII AND RIII RESPECTIVELY REPRESENT ALKYL GROUP OR CRIIRIII IN COMBINATION REPRESENTS CYLOALKYL GROUP AND (2) AN ALKYL ALUMINUM HLIDE REPRESENTED BY THE GENERAL FORMULA AIRIVMX''3-M WHEREIN M IS A NUMBER FROM 1 TO 2, X'' IS HALOGEN AND RIV REPRESENTS ALKYL OR ARYL GROUPS.

Inventors

  • 👤 Katsuyuki Nakamura
  • 👤 Masanori Tanabe
  • 👤 Yoshiyuki Mizoguchi
  • 👤 Hirohisa Fukuda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 01:42
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0201; B01J31/0211; B01J31/0212; B01J31/12; B01J31/14; B01J31/143; C; C07; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/324; B01J2231/328; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2601/00; C07C2601/18; C07C2601/20

Claims Analysis

Total Claims: 0
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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) 1975-01-17 1975-07-19 1976-01-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-17 1979-07-19 1980-01-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-17 1983-07-19 1984-01-18 $7700.00 Window Closed / Lapsed

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