Piperidine stabilizers for polymers

Abstract

Abstract 1. A COMPOSITION COMPRISING A POLYMER AND AN ULTRAVIOLET LIGHT STABILIZING AMOUNT OF A COMPOUND OF THE FORMULA 2-R1,2-R2,4-(R4-X-CO-CH(-R3)-),6,6-DI(H3C-)-PIPERIDINE WHEREIN R1 AND R2 ARE THE SAME OR DIFFERENT AND EACH IS A STRAIGHTOR BRANCHED ALKYL RESIDUE HAVING FROM 1 TO 12 CARBON ATOMS OR R1 AND R2, TOGETHER WITH THE CARBON ATOM TO WHICY THEY ARE BOUND FORM A CYCLOALKYL RESIDUE HAVING FROM 5 TO 12 CARBON ATOMS, R3 IS HYDROGEN, A STRAIGHT-OR BRACHED ALKYL RESIDUE HAVING FROM 1 TO 4 CARBON ATOMS, AN ARALKYL RESIDUE HAVING FROM 7 TO 9 CARBON ATOMS, OR A CYCLOALKYL RESIDUE HAVING 5 TO 6 CARBON ATOMS R4 IS HYDROGEN, A HYDROCARBYL RESIDUE HAVING FROM 1 TO 20 CARBON ATOMS, EITHER UNSUBSTITUTED OR SUBSTITUTED BY HALOGEN, OR INTERRUPTED BY ONE OR MORE OXYGEN OR SULPHUR ATOMS, OR R4 HAS THE STRUCTURE: 1-Y,2-R1,2-R2,6,6-DI(H3C-)-PIPERIDIN-4-YL- WHEREIN Y IS HYDROGEN OR A STRAIGHT-OR BRANCHED ALKYL RESIDUE HAVING FROM 1 TO 12 CARBON ATOMS, AN ALKENYL RESIDUE HAVING FROM 3 TO 12 CARBON ATOMS OR AN ARALKYL RESIDUE HAVING FROM 7 TO 12 CARBON ATOMS AND R1 AND R2 HAVE THEIR PREVIOUS SIGNIFICANCE; X IS -O-, -S- OR >NR5 WHEREIN R5 HAS THE SAME SIGNIFICANCE AS R3; OR R4 AND R5, TOGETHER WITH THE NITROGEN ATOM TO WHICH THEY ARE BOUND FORM A HETEROCYCLIC RESIDUE HAVING FROM 4 TO 10 CARBON ATOMS.

Inventors

• 👤 B Cook

Bibliographic Details