Abstract: 2-Methyl-3-(2,2,6,6-tetramethyl-4-piperidylamino)-N-(2,2,6,6-tetramethyl-4- piperidyl)-propionamide represented by the following formula, a process for producing the same and a stabilized organic material composition containing the same wherein the piperidine compound imparts excellent properties, such as light stability or thermal stability to the organic materials.

Abstract: Tris[2-hydroxy-3-(2,2,6,6-tetramethyl-4-piperidylamino)propyl] isocyanurate is useful as a light stabilizer for organic materials. A composition comprising an organic material and the isocyanurate is stable against light and also excellent in heat resistance. The isocyanurate can be produced by the reaction between tris(2,3-epoxypropyl) isocyanurate and 4-amino-2,2,6,6-tetramethylpiperidine.

Abstract: A 1-(2-benzothiazolylthio)-piperidine compound of the formula: ##STR1## WHEREIN R is a lower alkyl group substituted at least at the 3, 4 and/or 5 positions and n is an integer from 1 to 3, which is prepared by the reaction of 2-mercaptobenzothiazole or its reactive derivative with an alkylated piperidine or its N-halogenated derivative and useful as a vulcanization accelerator having an improved scorching property.

Abstract: Rubbers are prevented from ozone deterioration without discoloring or staining by the addition of a nitrile of the formula, ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen, C.sub.1 - C.sub.24 aliphatic, C.sub.5 - C.sub.7 alicyclic or aryl, or R.sub.1 and R.sub.2 may form together with the adjacent nitrogen atom a heterocyclic group which may further contain oxygen, and R.sub.3 and R.sub.4 are each hydrogen or lower alkyl.

Abstract: Rubbers are prevented from ozone deterioration without discoloring or staining by the addition of low toxic thiodipropionitrile of the formula,N.tbd.C--(CH.sub.2).sub.2 --S--(CH.sub.2).sub.2 --C.tbd.N.

Abstract: A process for the production of an octyltin chloride of the formula,(n-C.sub.8 H.sub.17).sub.m SnCl.sub.4.sub.-mWherein m is an integer of 1 to 3, which comprises reacting n-octyl chloride with metallic tin in an organic solvent in the presence of (1) either a mixture of a phosphorus compound with an amine, or a phosphorus compound having a nitrogen atom in the molecule, and (2) at least one of bromine, a bromine compound, iodine and an iodine compound. The octyltin chlorides are useful for the production of stabilizers for polyvinyl chloride.

Abstract: Rubbers are prevented from ozone deterioration without discoloring or staining by the addition of a low toxic nitrile of the formula, ##EQU1## wherein R.sub.1 is an alkyl or ##EQU2## R.sub.2 is a hydrogen atom or a methyl or ethyl group, and n and a are integers of 1 to 5, with the qualification that when a is an integer of 2, then R.sub.2 is methyl or ethyl.

Abstract: The premature vulcanization of rubber materials is substantially inhibited by incorporating therein a sulfenamide of the formula: ##SPC1##Wherein R, which may be the same or different, is alkyl of 1 to 8 carbon atoms. The preferred sulfenamide is N-phenythio-3,5-lupetidine. Said sulfenamide is incorporated into the rubber with or without a conventional vulcanization accelerator and is preferably employed in the form of a powder preparation adsorbed in an inorganic carrier.