Process for preparing acid esters of 4-piperidinol derivatives and their use as stabilizers

Abstract

Abstract 1. A SYNTHETIC POLYMER COMPOSITION STABILIZED AGAINST PHOTO-AND THERMAL-DETERIORATION WHEREIN THERE IS INCORPORATED, IN A SUFFICIENT AMOUNT TO PREVENT SAID DETERIORATION, A 4-PIPERIDINOL COMPOUND HAVING THE FORMULA (1-X1,2-R1,2-R2,6,6-DI(H3C-)-PIPERID-4-YL-O)N-R3 WHEREIN R1 AND R2 MAY BE THE SAME OR DIFFERENT AND REPRESENT AN ALKYL GROUP OF 1 TO 4 CARBON ATOMS OR THEY MAY FORM, TOGETHER WITH THE CARBON ATOMS TO WHICH THEY ARE ATTACHED, A SATURATED ALICYCLIC GROUP OR THE GROUP OF THE FORMULA 1-X1,2,2,6,6-TETRA(H3C-)-PIPERID-4,4-YLIDENE< X1 IS HYDROGEN ATOM OR AN ALKYL GROUP OF 1 TO 4 CARBON ATOMS; N IS AN INTEGER OF 1 THROUGH 4 INCLUSIVE; AND R3 REPRESENTS, WHEN N IS 1, AN ACYL GROUP DERIVED FROM AN ALIPHATIC OR AROMATIC MONOCARBOXYLIC ACID, WHEN N IS 2, A DIACYL GROUP DERIVED FROM AN ALIPHATIC OR AROMATIC DICARBOXYLIC ACID OR CARBONYL GROUP, WHEN N IS 3, A TRIACYL GROUP DERIVED FROM AN ALIPHATIC OR AROMATIC TRICARBOXYLIC ACID OR A TRIVALENT GROUP OBTAINED BY ELIMINATING THREE HYDROXYL GROUP FROM PHOSPHORIC ACID, PHOSPHOROUS ACID OR BORIC ACID, AND WHEN N IS 4, TETRAACYL GROUP DERIVED FROM AN AROMATIC TETRACARBOXYLIC ACID OR A TETRAVALENT GROUP OBTAINED BY ELIMINATING FOUR HYDROXYL GROUPS FROM ORTHOSILICIC ACID; PROVIDING THAT WHERE X1 IS HYDROGEN ATOM, N IS 4 AND, WHERE X1 IS AN ALKYL GROUP 1 TO 4 CARBON ATOMS, N IS AN INTEGER OF 1 THROUGH 4 INCLUSIVE.

Inventors

• 👤 H Horiuchi
• 👤 K Murayama
• 👤 S Higashida
• 👤 S Morimura
• 👤 T Yoshioka

Bibliographic Details