Patent EP-0045358-A3 (EP)
Title: 2,2,6,6-tetramethyl-4-piperidyl spiro aliphatic ethers as stabilizers for synthetic polymers
IPC: C07D491/10
Filed: 1981-05-29
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:wherein: Y<sub>1</sub> isA,, A<sub>2</sub>, A3, A4, A<sub>5</sub>, and A<sub>6</sub> each are selected from the group consisting of hydrogen; alkyl and hydroxyalkyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about eight carbon atoms; aryl having from about six to about eighteen carbon atoms; acyl having from one to about eighteen carbon atomswherein R<sub>4</sub> is selected from the group consisting of aliphatic having from one to about eighteen carbon atoms; cycloaliphatic having from three to about eight carbon atoms; heterocyclic having from six to about eighteen carbon atoms; and aromatic having from six to about eighteen carbon atoms; carbamoylwherein R<sub>5</sub> is selected from the group consisting of aliphatic having from one to about eighteen carbon atoms; cycloaliphatic having from three to about eight carbon atoms; heterocylic having from six to about eighteen carbon atoms; and aromatic having from six to about eighteen carbon atoms;and monovalent oxyacid groups; at least one pair of A, and A<sub>2</sub>; A3 and A<sub>4</sub>; and A<sub>5</sub> and A<sub>6</sub> being taken together to form the group;wherein:Z is selected from the group consisting of hydrogen; oxyl 0; alkyl and hydroxyalkyl having from one to about twenty carbon atoms; and aryl and hydroxyaryl having from six to about twenty carbon atoms;X is selected from the group consisting of alkylene having from one to about eighteen carbon atoms; cycloalkylene having from three to about eight carbon atoms; arylene having from about six to about eighteen carbon atoms; polyacyl R<sub>4</sub>wherein R<sub>4</sub> is as above and n, is a number from 2 to 4; polycarbamoyl R<sub>5</sub>wherein R<sub>5</sub> is as above and n<sub>2</sub> is a number from 2 to 4;and di- and trivalent oxyacid groups;R, and R<sub>2</sub> each are selected from the group consisting of hydrogen; alkyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about eight carbon atoms; aryl having from about six to about eighteen carbon atoms; carbamoylwherein R<sub>5</sub> is selected from the group consisting of aliphatic having from one to about eighteen carbon atoms; cycloaliphatic having from three to about eight carbon atoms; heterocyclic having from six to about eighteen carbon atoms; and aromatic having from six to about eighteen carbon atoms;and monovalent oxyacid groups;R<sub>3</sub> is selected from the group consisting of alkyl having from one to about eighteen carbon atoms; cycloalkyl having from three to about eight carbon atoms; aryl having from about six to about eighteen carbon atoms; and -X-O-R<sub>1</sub>;R<sub>7</sub> is selected from the group consisting of the residues of monohydric alcohols having from one to about eighteen carbon atoms and phenols having from six to about fifty carbon atoms;R<sub>"</sub> is selected from the group consisting of alkylene and oxyalkylene having from two to about ten carbon atoms and from zero to about five oxyether groups; cycloalkylene having from three to about eight carbon atoms; and arylene having from six to about fifty carbon atoms; and isocyanurate;m is a number from zero to 10; andp is zero or 1.