Pennwalt Corporation

Ivan Christoff Popoff

Paul Gordon Haines

Everett A Mailey

Stanley R Sandler

James P King

Chester Blair DeSavigny

A selected group of N-(oxazolidinothio) imides are active as scorch retarders without causing bloom in both unsaturated elastomers and elastomers with a slight degree of unsaturation.

N-(Oxazolidinothio) imides that provide scorch retardant nonblooming

A rigid polyurethane foam is prepared from a reaction mixture incorporating therein a 2-trichloromethyloxazolidine or a thiazolidine derivative for imparting to the foam smoke and flame retardancy.

2-Trichloromethyloxazolidine and thiazolidine derivatives useful as

Process for purifying N,N'-disubstituted p-phenylenediamine antiozonants and oil stabilizers utilizes a steam-distillation step to remove Schiff's base derivatives of p-phenylenediamine and N-monosubstituted p-phenylenediamine as well as aldehyde and ketone contaminants and corresponding alcohols thereof.

Purification of N,N'-disubstituted p-phenylenediamine antiozonants and

Thiuram Sulfides of oxazolidines and thiazolidines are disclosed herein and shown to be useful as non-blooming accelerators in the vulcanization of ethylene-propylene-diene-terpolymers.

Non-blooming accelerator and process for vulcanization of EPDM elastomers

The Polymer of 1,2,4-thiadiazole of the structure ##STR1## AND LUBRICANTS CONTAINING SAID POLYMER ARE PROVIDED.

Polymer of 1,2,4-thiadiazole and lubricants containing it as an additive

Alkylated phenol sulfide contained within microcapsules, in which the capsule wall is crosslinked polyamide, polyurea, or polyamide-polyurea resin, is a better-handling, more efficient vulcanizing agent for rubber.

Microencapsulated vulcanizing agents

Thiuram sulfides of oxazolidines and thiazolidines are disclosed herein and shown to be useful as non-blooming accelerators in the vulcanization of ethylene-propylene-diene-terpolymers.

Oxazolidine and thiazolidine carbodithioates of sodium, potassium and specified alkyl substituted ammonium which are useful as vulcanization accelerators for EPDM elastomers while demonstrating non-blooming characteristics.

Oxazolidine and thiazolidine carbodithioates

Oxazolidine and thiazolidinecarbodithioates, and pyridine adducts thereof, are accelerators for the vulcanization of EPDM elastomers, wherein they exhibit non-blooming characteristics.

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Ambler, PA, United States of America

Ivan Christoff Popoff