Polyolefin compositions stabilized against UV-radiations by pyrr

Details Polyolefin compositions stabilized against UV-radiations by pyrr Polyolefin compositions stabilized against UV-radiations by pyrr

1980-12-05

1982-08-24

Fan, Jane T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

2603262, 26032625, 524583, 524585, C08K 500, C07D20708

Patent

active

043461883

ABSTRACT:
Polyolefin polymers can successfully be stabilized against the detrimental effects of UV-radiations by compounding them with a stabilizer belonging to the class of compounds containing a pyrrolidine ring and which are sterically hindered in the 3-position and also substituted in such position by substituents having a high molecular weight. The esters of the 2,2,5,5-tetraalkyl-4-methyl-3-methylol pyrrolidine are exemplary compounds; the adipic and the stearic esters are preferred.

REFERENCES:
patent: 4111901 (1978-09-01), Hechenbleikner

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