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US3700647A Expired / Lapsed US ⏱️ 0.0 years remaining

Alternating copolymers of alpha-olefins and acrylic compounds

Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1971-02-16
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Granted: 1972-10-24
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Expires: 1991-02-16
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Abstract

Abstract NOVEL ALTERNATING COPOLYMERS OF TERMINALLY UNSATURATED HYDROCARBONS OF THE FORMULA CH2=C(-R1)-R2 WHEREIN R1 AND R2 EACH IS HYDROGEN OR AN ALKYL, ARYL ARALKYL, ALKYLARYL OR CYCLOALKYL RADICAL AND AN ACRYLIC COMPOUND OF THE FORMULA CH2=CH-CO-Y WHEREIN Y IS R, SR, ZH, ZME, NR''R", HALOGEN OR HYDROGEN IN WHICH Z IS OXYGEN OR SULFUR, R IS A HYDROCARBON OF HALOHYDROCARBON RADICAL, R'' AND R" EACH IS HYDROGEN OR A HYDROCARBON RADICAL, ME IS A METAL OR AMMONIUM RADICAL AND THEIR METHOD OF PRODUCTION COMPRISING CONTACTING THE AFOREMENTIONED MONOMERS WITH AN ORGANOALUMINUM HALIDE OF THE FORMULA AIR"'' NX3-N WHEREIN R"'' IS A HYDROCARBON RADICAL, X IS A HALOGEN AND N IS 1, 1.5 OR 2, SAID ALTERNATING COPOLYMERS BEING USEFUL AS MOLDED PRODUCTS, FILMS FIBERS, CALKING COMPOUNDS, COATING MATERIALS, ADHESIVES AND THE LIKE.

Inventors

  • 👤 Kohei Nakaguchi
  • 👤 Shohachi Kawasumi
  • 👤 Masaaki Hirooka
  • 👤 Hiroshi Yabuuchi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 18:13
CPC Classifications
C; C08; C08F; C08F10/00; C08F210/00; C08F210/02; C08F210/04; C08F210/06; C08F210/14

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) 1975-10-24 1976-04-24 1976-10-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-24 1980-04-24 1980-10-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-24 1984-04-24 1984-10-24 $7700.00 Window Closed / Lapsed

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