Patent · US Expired

Preparation of N,N'-bridged bistetramethylpiperidinyl compounds

US5714611A · kind A · utility

2Cited by

1References

8Claims

0Family size

Assignee

BASF SE

Inventor

Alexander Aumuller · Neustadt, DE

Key dates

Filing date	Jul 9, 1996
Grant date	Feb 3, 1998
Priority date	—
Expiry date	Jul 9, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/3435
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

N,N'-bridged bistetramethylpiperidinyl compounds of Formula I ##STR1## useful as light stabilizers and stabilizers for organic material which are prepared starting from tetramethylpiperidinyl compounds of Formula II ##STR2## by reacting a compound of Formula II with a cyclic carbonate of Formula III. ##STR3##

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.