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US3778430A Expired / Lapsed US ⏱️ 0.0 years remaining

Silicon substituted azonitriles

Assignee: EIDP Inc
•
Filing: 1971-05-25
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Granted: 1973-12-11
•
Expires: 1991-05-25
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Abstract

Abstract COMPOUND OF THE FORMULA (R-SI(-R'')(-R")-(CH2)2-Y-C(-CN)(-R''")-N=)2 WHERE R IS ALKYL, FLUORO-SUBSTITUTED ALKYL WHEREIN THE FLUORO SUBSTITUENT IS NO COLOSER THAN THE GAMMA POSITION WITH RESPECT TO SI, PHENYL, LOWER ALKYL SUBSTITUTED PHENYL, FLUORO-SUBSTITUTED PHENYL, BENZYL OR LOWER ALKYL SUBSTITUTED BENZYL; R'' IS A LOWER ALKOXY, ARYLOXY, ALKARYLOXY OR LOWER ARELKOXY; Y IS A SATURATED LOWER ALKYLENE; R" IS INDENPENDENT OF R AND R'' AND IS ANY OF THE ABOVE NAMED GROUPS REPRESENTING R OR R''; AND R" IS A LOWER ALKYL, LOWER ALKYL SUBSTITUTED PHENYL, BENZYL, OR LOWER ALKYL SUBSTITUTED BENZYL WHEREIN SUBSTITUTION IS AT OTHER THAN AN ALPHA POSITION. THE COMPOUNDS FIND USE AS FREE RADICAL INITIATORS IN POLYMERIZATION REACTIONS, AND ARE PARTICULARLY USEFUL FOR PREPARING MOISTURE CURABLE FLUOROCARBON CALUKING COMPOUNDS.

Inventors

  • 👤 J Citron

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 21:02
CPC Classifications
C; C07; C07C; C07C251/00; C07C251/72; C07C251/88; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804

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) 1976-12-10 1977-06-11 1977-12-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-10 1981-06-11 1981-12-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-10 1985-06-11 1985-12-11 $7700.00 Window Closed / Lapsed

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