Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
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
Ballabio Adriano
Brunelli Maurizio
Costanzi Silvestro
Tessarolo Francesco
ANIC, S.p.A.
Fan Jane T.
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