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Title:
HYDROXYBENZYLMALONIC ESTER DERIVATIVE AND ITS INTERMEDIATE AND PLASTIC MATERIALS STABILIZED BY SAID COMPOUNDS
Document Type and Number:
Japanese Patent JPS5271476
Kind Code:
A
Abstract:
Esters and amides from 4-hydroxy-and 4-amino-polyalkylpiperidines and hydroxybenzylmalonic acids substituted at the central carbon atom with an organic residue, preferably alkyl-, esteralkyl- or phosphonoalkyl-groups, are excellent stabilizers for organic polymers, especially for polyolefins. They protect the polymers as well against light degradation as against thermo-oxidative degradation. The compounds can be prepared by hydroxybenzylation of the corresponding derivatives of substituted malonic acids. Bis-malonic acid derivatives may be obtained from the monomalonics by reaction with formaldehyde.

Inventors:
MIKAERU RAASUBERUGAA
Application Number:
JP13402976A
Publication Date:
June 14, 1977
Filing Date:
November 08, 1976
Export Citation:
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Assignee:
CIBA GEIGY AG
International Classes:
C07D211/46; C07D211/58; C07D211/94; C07F9/40; C07F9/58; C07F9/59; C08K5/00; C08K5/34; C08K5/3412; C08K5/3435; C08L7/00; C08L21/00; C08L23/00; C08L51/00; C08L51/02; C08L101/00; (IPC1-7): C07D211/46; C07D211/58; C08K5/34; C08L101/00