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US3689471A Expired / Lapsed US ⏱️ 0.0 years remaining

Ternary catalyst systems for the polymerization of cycle olefins

Assignee: Goodyear Tire and Rubber Co
•
Filing: 1968-08-26
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Granted: 1972-09-05
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Expires: 1988-08-26
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Abstract

Abstract A METHOD FOR THE RING OPENING POLYMERIZATION OF UNSATURATED ALICYCLIC COMPOUNDS CONTAINING AT LEAST 4 AND NOT MORE THAN 5 CARBON ATOMS AND ONE DOUBLE BOND IN THE CYCLIC RING AND UNSATURATED ALICYCLIC COMPOUNDS CONTAINING AT LEAST 8 CARBON ATOMS AND AT LEAST ONE DOUBLE BOND IN THE CYCLIC RING IS DISCLOSED WHICH COMPRISES SUBJECTING SUCH UNSATURATED ALICYCLIC COMPOUNDS TO A CATALYST SYSTEM COMPRISING (A) A TUNGSTEN OR MOLYBDENUM HALIDE OR OXYHALIDE, (B) AT LEAST ONE LEWIS ACID OF THE FORMULA MXN WHERE M IS A METAL REPRESENTED BY ALUMINUM, ZINC, GALLIUM, TIN AND ANTIMONY; X IS A HALOGEN SUCH AS BROMINE, CHLORINE, IODINE AND FLUORINE AND N IS AN INTEGER EQUAL TO THE VALENCE OF M AND (C) A REFUCING AGENT SELECTED FROM THE GROUP CONSISTING OF METALS, METAL HYDRIDES, ALKYL SECONDARY AMINES, ALKYL TERTIARY AMINES, SATURATED ALKYL ALCOHOLS, ALKYL PHOSPHINES AND HYDROGEN.

Inventors

  • 👤 William Allen Judy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 05:34
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/69; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08

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) 1975-09-05 1976-03-06 1976-09-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-09-05 1980-03-06 1980-09-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-09-05 1984-03-06 1984-09-05 $7700.00 Window Closed / Lapsed

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