American Cyanamid Company

John Christian Oppelt

Peter Vincent Susi

Joseph A Hoffman

Christos Savides

There is provided a process for the preparation of substituted .beta.-ketoanilide compounds having the structural formula I ##STR1## The substituted .beta.-ketoanilide compounds are useful for the control of insect pests.

Process for the preparation of substituted .beta.-ketoanilide compounds

Flame retardant polyolefin compositions containing polymeric pentaerythrityl phosphonates and ammonium polyphosphate.

Polymeric pentaerythrityl phosphonates and their use as flame retardants

The use of N,N-disubstituted aminoethyl esters as ultraviolet light stabilizers in polymers, particularly polypropylene, is disclosed.

Light-stable polymer compositions and processes therefor

Compounds of the formula: ##STR1## WHEREIN R.sub.1 and R.sub.2 are each branch-chain alkyl of 3 to 8 carbon atoms and -Het is a nitrogen-containing heterocyclic moiety attached to the carbonyl carbon atom through a heterocyclic nitrogen are useful as light stabilizers in polyolefins. They may be prepared (a) by reacting the 3,5-dialkyl-4-hydroxybenzoyl chloride with the appropriate heterocyclic amine in the presence of an acid acceptor or (b) by reacting the corresponding benzoic acid with the appropriate heterocyclic amine in the presence of a carbodiimide as dehydrating agent.

Heterocyclicamides of hindered 3,5-dialkyl-4-hydroxybenzoic acids and

Compounds of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each branch-chain alkyl of 3 to 8 carbon atoms and R.sub.3 and R.sub.4 are each alkyl of 1 to 4 carbon atoms are useful as light stabilizers in polyolefins. They may be prepared by reacting 3,5-dialkyl-4-hydroxybenzoic acid with 4-amino-2,2-dimethyl-6,6-di(lower alkyl)piperidine in the presence of a carbodiimide as dehydrating agent.

N-(2,2-dimethyl-6,6-di(lower alkyl)-4-piperidinyl)-amides of hindered

Compounds of the formula: ##SPC1## Wherein R.sub. 1 and R.sub. 2 are each branch-chain alkyl of 3 to 8 carbon atoms, R.sub. 3 is --CH.sub.2 CH.sub.2 OZ wherein Z is hydrogen or ##SPC2## And R.sub. 4 is hydrogen or R.sub. 3 are useful as light stabilizers in polyolefins. They may be prepared (a) by reacting the 3,5-di-alkyl-4-hydroxybenzoyl chloride with the appropriate amine in the presence of an acid acceptor or (b) by reacting the corresponding benzoic acid with the appropriate amine in the presence of a carbodiimide as dehydrating agent.

Ethanol- and substituted ethanolamides of hindered

Compounds of the formula: ##SPC1## Wherein R.sub.1 and R.sub.2 are each branch-chain alkyl of 3 to 8 carbon atoms and R.sub.3 and R.sub.4 are each hydrogen, alkyl of 1 to 18 carbon atoms, or cycloalkyl of 5 or 6 carbon atoms are useful as light stabilizers in polyolefins. They may be prepared (a) by reacting the 3,5-di-alkyl-4-hydroxybenzoyl chloride with the appropriate amine in the presence of an acid acceptor or (b) by reacting the corresponding benzoic acid with the appropriate amine in the presence of a carbodiimide as dehydrating agent.

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Somerville, NJ, United States of America

John Christian Oppelt