Hindered amine light stabilized polymer compositions

Details Hindered amine light stabilized polymer compositions Hindered amine light stabilized polymer compositions

1995-04-17

1995-12-05

Lipman, Bernard

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 92, 524564, C08K 534

Patent

active

054730015

ABSTRACT:
Hindered amine light stabilizers are provided in which the hindered amine is contained in a unit of formula ##STR1## where X is ##STR2## and R.sup.1, R.sup.2, R.sup.3 and A are as defined as in the Summary of the Invention. Unique polymeric and non-polymeric compounds containing this unit are useful as additives for the stabilization of polymeric compositions which are normally subject to thermal, oxidative or actinic light degradation.

REFERENCES:
patent: 3483276 (1969-12-01), Mahlman
patent: 3904581 (1975-09-01), Murayama et al.
patent: 4097551 (1978-06-01), DiGiulio et al.
patent: 4309546 (1982-01-01), Karrer
patent: 4336183 (1982-06-01), Nakahara et al.
patent: 4356307 (1982-10-01), Kelkenberg et al.
patent: 4486570 (1984-12-01), Lordi et al.
patent: 4506056 (1985-03-01), Gaylord
patent: 4569997 (1986-02-01), Karrer
Kirk-Othmer Encyclopedia of Chemical Technology, vol. 23, pp. 615-627.
Polymerization Mechanisms and Processes, vol. 18, pp. 720-744.

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