Patent EP-0045358-A2 (EP)
Inventor: KUBOTA NAOHIRO
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 1  is
     
     A,, A 2 , A3, A4, A 5 , and A 6  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 atoms
     wherein R 4  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; carbamoyl
     wherein R 5  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 2 ; A3 and A 4 ; and A 5  and A 6  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 4 
     wherein R 4  is as above and n, is a number from 2 to 4; polycarbamoyl R 5 
     wherein R 5  is as above and n 2  is a number from 2 to 4;
     and di- and trivalent oxyacid groups;   R, and R 2  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; carbamoyl
     wherein R 5  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 3  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 1 ;   R 7  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 "  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; and   p is zero or 1.