C-nitrosoaniline compounds and their blends as...

Details C-nitrosoaniline compounds and their blends as... C-nitrosoaniline compounds and their blends as...

2006-04-04

2006-04-04

Griffin, Walter D. (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

C585S950000, C203S008000, C252S401000, C252S405000, C252S407000

Reexamination Certificate

active

07022220

ABSTRACT:
Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds. Also disclosed is a composition of matter comprising:A) an ethylenically unsaturated monomer andB) an effective inhibiting amount, sufficient to prevent premature polymerization during distillation or purification of said ethylenically unsaturated monomer, of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds used together with an effective amount of oxygen or air to enhance the inhibiting activity of said inhibitor.

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