Preparation of N, N'-bridged bistetramethylpiperidinyl compounds

Details Preparation of N, N'-bridged bistetramethylpiperidinyl compounds Preparation of N, N'-bridged bistetramethylpiperidinyl compounds

1997-11-05

1999-06-22

Huang, Evelyn

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

546188, 546190, 546191, C07D21146, C08K 534

Patent

active

059143606

ABSTRACT:
N,N'-bridged bistetramethylpiperidinyl compounds, which are produced by reacting tetramethylpiperidinyl compounds with a cyclic carbonate, and are useful as light stabilizers for organic material.

REFERENCES:
patent: 3940363 (1976-02-01), Murayama et al.
patent: 4234734 (1980-11-01), Karrer
Khim. Geterot. Soedinenii, No. 12, p. 1250, Dec. 1981, L.M. Kostochka, et al., Photochemical Oxidation of 1,2,2,6,6-Pentamethy-4-Piperidol by Ketones.
Khim. Geterot. Soedinenii, No. 12, pp. 1280-1284, Dec. 1982, A.M. Belostotskii, et al., "Pathways of Photooxidation of 1,2,2,6,6-Pentamethyl-4-Piperidol by Keytones".

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