Capacitor impregnated with hydrocarbon contg an epoxy cpd

摘要

A capacitor is impregnated with a hydrocarbon (I) contg. a cpd. (II) with >=1 epoxy-gp. (I) may be polybutene. (II) has formula:- where R is H, an (un)satd. aliphatic or aromatic hydrocarbon; R' is a divalent (un)satd. aliphatic or aromatic hydrocarbon, and R" is an (un)satd. aliphatic or aromatic hydrocarbon. Any or R,R',R" may contain ester-, ether- or keto-gps. (II) may be an epoxidised methylstearate. (II) functions as plasticiser and stabiliser.