Abstract: 2,2,6,6-TETRAMETHYL-4-PIPERIDYL CARBOXYLIC ACID ESTERS OF ALIPHATIC TETRACARBOXYLIC ACIDS ARE PROVIDED, USEFUL AS STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: ##STR1## wherein: R.sub.1 is selected from the group consisting of ##STR2## and when a is 2, 3, or 4, the R.sub.1 groups can be the same or different; R.sub.2 is selected from the group consisting of hydrogen; alkyl; alkenyl; cycloalkyl; alkcycloalkyl; cycloalkalkyl; aryl; aralkyl; and alkaryl; and when b is 2 or 3, the R.sub.2 groups can be the same or different;R.sub.3 is selected from the group consisting of hydrogen and O;R.sub.6 is lower alkyl;A is selected from the group consisting of 1, 2, 3 and 4;B is selected from the group consisting of 0, 1, 2 and 3;A + b is equal to 4; and Z is a tetravalent aliphatic or cycloaliphatic radical carrying four ##STR3## WHERE R is R.sub.1 or R.sub.2, and can include from one to three hydroxyl groups OH.

Abstract: 2,2,6,6-TETRAMETHYL-4-PIPERIDYL SPIRO ALIPHATIC ETHERS ARE PROVIDED, USEFUL AS STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: ##STR1## wherein: R.sub.1 is selected from the group consisting of hydrogen, lower alkyl and lower hydroxyalkyl having one or two carbon atoms; ##STR2## R.sub.3 is selected from the group consisting of hydrogen and O; and n is 0 to 1.

Abstract: Stabilizer compositions are provided whose ingredients interact synergistically to improve the resistance to deterioration on light exposure and heating of synthetic resin compositions. The interacting ingredients are (a) a carboxylic acid ester of a 2,2,6,6-tetramethylpiperidine-4-alcohol having 15 to 75 carbon atoms and 1 to 4 ester groups, and (b) at least one carbonate ester of an ortho-substituted polyhydric phenol having in the molecule one to three benzenoid rings, two to three phenolic hydroxyl groups, and in each benzenoid ring one to two alkyl, cycloalkyl, or aralkyl groups of which at least one is positioned ortho to a phenolic hydroxyl group.Synthetic resin compositions are provided that are stabilized with thestabilizer compositions disclosed, including olefin polymers, polyamides, acrylic polymers, and vinyl halide polymers.

Abstract: 2,2,6,6-Tetrasubstituted-4-piperidyl carboxy heterocyclic compounds are provided which are useful as stabilizers for organic polymeric materials.

Abstract: 2,2,6,6-TETRAMETHYL-4-PIPERIDYL CARBOXYLIC ACID ESTERS OF BUTANE OR BUTENE TRICARBOXYLIC ACIDS ARE PROVIDED, USEFUL AS STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: ##STR1## wherein: R.sub.1 is selected from the group consisting of ##STR2## the R.sub.1 groups can be the same or different; R.sub.2 is selected from the group consisting of CH.sub.3 and CH.sub.2 ; andR.sub.3 is lower alkyl.

Abstract: 2,2,6,6-Tetramethyl-4-piperidyl carbonic acid esters of dihydric alcohols and phenols are provided, useful as stabilizers for organic polymeric materials, and having the general formula: ##STR1## wherein: R.sub.1 and R.sub.2 are selected from the group consisting of ##STR2## the R.sub.1 and R.sub.2 groups can be the same or different; R.sub.3 is selected from the group consisting of hydrogen and O;R.sub.6 is lower alkyl;n is selected from the group consisting of 1, 2, 3, 4 and 5;--O --Z--O--is a bivalent aliphatic, cycloaliphatic, aromatic, or mixed aliphatic-aromatic, aliphatic-cycloaliphatic or cycloaliphatic-aromatic radical carrying two hydroxyl groups OH esterified with carbonic acid groups of the piperidyl carbonic acid ester.

Abstract: Stabilizers for organic polymeric materials are provided, comprising a triphosphite, an acid phosphite, and a 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester having the general formula: ##STR1## wherein: R.sub.1 is selected from the group consisting of ##STR2## Y is selected from the group consisting of hydrogen and O; R.sub.

Abstract: 2,2,6,6-TETRAMETHYL-4-PIPERIDYL CARBOXYLIC ACID ESTERS OF ALIPHATIC DI- OR TRI- CARBOXYLIC ACIDS ARE PROVIDED, USEFUL AS LIGHT STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: ##STR1## wherein: R.sub.1 is selected from the group consisting of ##STR2## R.sub.2 is CH.sub.3 or C.sub.2 H.sub.5 ; a is selected from the group consisting of 2 and 3;M is selected from the group consisting of 1, 2, 3 and 4; andZ is a divalent ot trivalent aliphatic radical carrying from two to three ##STR3## groups, and can include from one to four hydroxyl groups OH.

Abstract: 2,2,6,6-TETRAMETHYL-4-PIPERIDYL THIOCARBOXYLATES AND AMINOCARBOXYLATES ARE PROVIDED HAVING THE GENERAL FORMULA: ##STR1## wherein: M.sub.1, M.sub.3, AND M.sub.4 ARE NUMBERS FROM 0 TO 1;m.sub.2 is a number from 1 to 2;n.sub.1 is a number from 0 to 2;n.sub.2 is a number from 0 to 3;n.sub.3 is a number from 0 to 2;R.sub.1 is selected from the group consisting of alkyl, aralkyl, cycloalkyl and 2,2,6,6-tetramethyl-4-piperidyl;R.sub.2 is selected from the group consisting of alkyl, cycloalkyl, alkylaryl, aralkyl, and hydroxy-substituted such radicals;R.sub.1 and R.sub.2 have from one to about twenty carbon atoms;X is hydrogen or O;Y.sub.1 and Y.sub.2 are bivalent linking radicals having from one to about 20 carbon atoms, and selected from the group consisting of alkylene and cycloalkylene; and amino-substituted such radicals;Q is selected from the group consisting of SR.sub.

Abstract: 2,2,6,6-TETRAMETHYL-4-PIPERIDYL ESTERS OF BICYCLIC HEPTANE AND OCTANE CARBOXYLIC ACIDS ARE PROVIDED, USEFUL AS STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: ##STR1## R.sub.1 is selected from the group consisting of hydrogen and O; R.sub.2 is selected from the group consisting of alkyl; alkenyl; cycloalkyl; aryl; alkaryl; aralkyl;a is selected from the group consisting of 1, 2, 3 and 4;b is selected from the group consisting of 0, 1, 2 and 3; and a + b is 1, 2, 3 or 4; and"ZEE" is a bicyclic heptane or octane ring having from seven to eight ring carbon atoms.

Abstract: Organic phosphites are provided having at least one 2,2,6,6-tetramethyl piperidyl substituent attached at the 4-position to phosphorus through oxygen, and at least one polyol or polyphenol group, which are superior light and heat stabilizers for organic polymeric mterials such as polyethylene, polypropylene, polyvinyl chloride, acrylonitrile-butadiene-styrene terpolymers, polyamides, polystyrene, and similar polymers.