Darrell R Mullins

US Patent:

40175448, Apr 12, 1977

Filed:

Apr 17, 1975

Appl. No.:

5/569119

Inventors:

Darrell Dexter Mullins - Norton OH

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C07C 8764
C07C 9314
C07C 6954

US Classification:

260576

Abstract:

A method of inhibiting polymerization of unsaturated carboxylic acid esters and improved unsaturated carboxylic acid ester compositions are described. The method comprises, and the compositions are prepared by, incorporating into the ester composition a N-(nitroalkyl)phenylenediamine of the formula ##STR1## in which R is lower alkyl, R' is hydrogen, nitro or lower alkyl and X is hydrogen, lower alkyl or lower alkoxy.

US Patent:

39693503, Jul 13, 1976

Filed:

Jul 1, 1974

Appl. No.:

5/484675

Inventors:

John J. D'Amico - Akron OH
Darrell D. Mullins - Norton OH

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C07D27778

US Classification:

2602471H

Abstract:

The reaction of azolesulfenamides with sulfur to form aminodithioazoles is promoted by catalytic quantities of certain bases.