Sankyo Company, Limited

Monsanto Kasei Company

Toshimasa Toda

Tomoyuki Kurumada

Eiko Mori

Katsuaki Matsui

Takao Yoshioka

Syoji Morimura

Keisuke Murayama

Hideo Horiuchi

Susumu Higashida

Noriyuki Ohta

Hisayou Ohsawa

Hisayou Osawa

Hisayu Osawa

Takaaki Yamazaki

Satoru Naito

Noriyuki Ohata

Hiromi Tomono

Noriyuki Onta

Ichiro Watanabe

Keisuku Murayama

Syoji Moriyama

Ryuichi Hasegawa

A polymer composition comprising a polymer stabilized against the effects of light and heat by the incorporation of a polymer stabilizer, wherein the polymer stabilizer comprises at least one compound selected from the group consisting of compounds of formula (I): ##STR1## wherein R.sup.1 is hydrogen, alkyl, alkoxyalkyl, carboxylic acyl or phenylalkyl, or an optionally substituted tetramethylpiperidyl group; R.sup.2 is hydrogen, alkyl, carboxylic acyl or phenylalkyl group; R.sup.3 is alkylene optionally interrupted by at least one oxygen atom; X is oxygen or --NR.sup.5 --, wherein R.sup.5 is hydrogen or alkyl; Y is --OCO--, --COO--, --CONH-- or --OCONH--; n is 2 to 4; and, when n is 2, Z is alkylene optionally interrupted by at least one oxygen, or sulfur or aryl, cycloalkyl or heterocyclic group, or, when n is 3, Z is alkanetriyl in which a carbon is optionally replaced by nitrogen or, when n is 4, Z is alkanetetrayl optionally interrupted by at least one oxygen atom, and acid addition salts of such compounds.

Polymer composition containing a piperidyl-triazine compound

A compound of formula (I): ##STR1## wherein: R.sup.1 is hydrogen, alkyl, alkoxyalkyl, carboxylic acyl or phenylalkyl, or an optionally substituted tetramethylpiperidyl group: R.sup.2 is hydrogen, alkyl, carboxylic acyl or phenylalkyl group; R.sup.3 is alkylene optionally interrupted by at least one oxygen atom X is oxygen or --NR.sup.5 --; wherein R.sup.5 is hydrogen or alkyl,: Y is --OCO--, --COO--, --CONH-- or --OCONH--; n is 2 to 4; and, when n is 2, Z is alkylene optionally interrupted by at least one oxygen, sulfur or aryl, cycloalkyl or heterocyclic group, or, when n is 3, Z is alkanetriyl in which a carbon is optionally replaced by nitrogen or, when n is 4, Z is alkanetetrayl optionally interrupted by at least one oxygen atom and acid addition salts thereof are valuable polymer stabilizers.

Piperidyl-triazine derivatives and their use as polymer stabilizers

The present invention relates to weather resistant resin compositions consisting essentially of at least one polymeric substance and comprising discoloration effective amounts of:

Resistant resin compositions

Bis(piperidylaminotriazylamino)-(piperidylaminotriazylaminomethyl)-octane derivatives are novel compounds which are valuable as stabilizers for synthetic polymers.

Tris(piperidylaminotriazylamino) compounds, their preparation and their

Novel triazine derivatives represented by the general formula (I) and use thereof as light stabilizers for synthetic polymers are described. ##STR1## The compounds are distinguished by an improved stabilizing effect in various synthetic polymer compositions, such as polyolefins, against light- and/or heat-induced deterioration thereof, low volatility upon heat-processing or during storage of shaped articles containing the compounds, and resistance to extraction with water and solvents.

Triazine derivatives

Piperidine derivatives having the formula ##STR1## wherein R' represents an alkyl, an acyl, an alkoxycarbonyl, an amino or nitroso group;

Piperidine derivatives

A novel piperidine derivative having a stabilizing effect on a synthetic polymeric material and a composition comprising said piperidine derivative and a synthetic polymeric material.

A synthetic polymer composition stabilized against photo- and thermal-deterioration comprising a stabilizing amount of a compound having the formula ##STR1## wherein R' represents an alkyl, an acyl, an alkoxycarbonyl, an amino or nitroso group;

Polymer compositions containing piperidine derivatives as stabilizers

Novel piperidine derivatives of formula: ##STR1## (wherein 2 or 3 of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent alkyl groups having from 1 to 4 carbon atoms and the remainder of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are hydrogen atoms, and R.sub.6 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a substituted alkyl group, an aliphatic acyl group, an alkoxycarbonyl group or an aralkoxycarbonyl group) are useful as stabilizers for synthetic polymers.

Novel piperidine derivatives for the stabilization of synthetic polymers

Piperidine-spiro-hydrantoin derivatives having the formula ##STR1## wherein X represents oxygen atom or sulfur atom; n is an integer of 1 to 4 inclusive; and

Piperidine-spiro-hydantoin derivatives

Piperidine-spiro-hydantoin derivatives having the formula ##SPC1## Wherein X represents oxygen atom or sulfur atom; n is an integer of 1 to 4 inclusive, and R represents various aliphatic or aromatic groups depending on the value of n. These compounds (I) are useful as stabilizers against photo and thermal deterioration of various synthetic polymers and can be prepared, for example, by reacting the corresponding 3-unsubstituted piperidine-spiro-hydantoin compound with the halide R-(X.sub.1).sub.n in which R and n are as defined herein and X.sub.1 is a halogen atom.

Piperidine-spiro-hydantoin derivatives and their use as stabilizers

Piperidine derivatives having the formula ##SPC1## Wherein

Piperidine derivatives and their use as stabilizers

4-Piperidone ketal derivatives of the formulae ##SPC1## And ##SPC2## Wherein R.sub.1 represents an alkyl group of 1 to 8 carbon atoms and R.sub.2 represents an alkylene group of 2 or 3 carbon atoms or o-phenylene group and they are prepared by reacting triacetonamine with a monohydric alcohol of the formula

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Tokyo, Japan

Toshimasa Toda