Polymerization inhibitor for vinyl aromatics

US5540861A · kind A · utility

Assignee

• Uniroyal Chemical Company, Inc. · US

Inventors

• Anthony V. Grossi · Newark, US
• Paul E. Stott · Sandy Hook, US
• John M. DeMassa · Trumbull, US
• Howard Stephen Friedman · North Haven, US
• Gerald J. Abruscato · Southington, US

Key dates

• Filing date: Feb 14, 1994
• Grant date: Jul 30, 1996
• Expiry date: Feb 14, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C211/51
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a blend of different isomers of a compound represented by structure I ##STR1## wherein R is C.sub.9 -C.sub.20 alkyl; wherein Y is NO.sub.2 or SO.sub.3 R' or H; wherein R' is C.sub.1 -C.sub.20 alkyl; wherein X is NO.sub.2 or C.sub.1 -C.sub.20 alkyl; and wherein R" is H or C.sub.1 -C.sub.20 alkyl, m is 2 or 3, and n is 0, 1, 2, 3, with the provisos: (1) that Y may not be H and X may not be NO.sub.2 when n=0 and (2) that when R is C.sub.9 and n=0, X and Y may not both be NO.sub.2.