Uniroyal Chemical Company, Inc.

Chemtura Corporation

Vilen Kosover

Gan Wang

Gerald J Abruscato

Brigitte Benage

Jesus R Fabian

E Brian Fox

Susan Ferrarotti

Daniel C Knowles

Istvan Lippai

Mitchel Cohn

Anthony Vincent Gentile

Angela M Edwards

Leonid B Volodarsky

Jesus Fabian

Frank Deblase

Gerald J Abrucscato

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of an inhibitor having the structural formula:

Inhibition of polymerization of ethylenically unsaturated monomers

The present invention is directed to substituted tetrahydropyrimidine derivatives of the general formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7, which may be the same or different, are hydrogen or alkyl aryl, cycloalkyl, alkaryl, aralkyl or heterocyclic, or substituted derivative thereof, R.sup.6 or R.sup.7 can additionally be --OH or --NR.sup.8 wherein R.sup.8 is hydrogen, alkyl, aryl, cycloalkyl, alkaryl, aralkyl or heterocyclic, or substituted derivative thereof, or R.sup.6 and R.sup.7 together can be .dbd.O or .dbd.NOH, and any two R groups on the same or adjacent carbon atoms can be joined in a cyclic configuration, and X is oxyl or hydroxy, it being provided that at least one of R.sup.2 and R.sup.3 and at least one of R.sup.4 and R.sup.5 are other than hydrogen.

Substituteed tetrahydropyrimidine derivatives and their use as

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Cheshire, CT, United States of America

Vilen Kosover