Stabilization of poly(mono-olefins)

Details Stabilization of poly(mono-olefins) Stabilization of poly(mono-olefins)

1976-05-19

1978-12-26

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106176, 546 16, 546192, 546209, 546227, 546245, 546248, C08K 534, C07D21106

Patent

active

041315995

ABSTRACT:
Sterically hindered piperidines having at least 5 alkyl groups in ring positions 2,3,5 and 6 are usable as light-stabilizers for organic polymers. The nitrogen may be unsubstituted or may bear a mono- to tetravalent substituent. The compounds can be synthesized by a Wolf-Kishner reduction of polyalkyl 4-oxopiperidines optionally followed by a N-substitution reaction in a second step.
The stabilizers are added to the polymers in an amount of from 0.01 to 5% by weight. Preferred is the stabilization of polyolefins, styrene polymers, polyamides and polyurethanes.

REFERENCES:
patent: 3103542 (1963-09-01), Fielden
patent: 3840494 (1974-10-01), Murayama et al.
patent: 3929804 (1975-12-01), Cook
patent: 3939168 (1976-02-01), Cook
patent: 3975357 (1976-08-01), Murayama et al.
patent: 3992390 (1976-11-01), Holt
patent: 3993655 (1976-11-01), Rasberger et al.
patent: 3998784 (1976-12-01), Cook
Chem. Abs., vol. 77, 62803n (1972).

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