Patent ID: 6090758
Filing Date: 2000-07-18
Classification: B01D,C10M,C10N

Abstract:
A method for reducing foaming at both 24.degree. C. and 93.5.degree. C. of a lube oil which comprises a wax isomerate base stock, said method comprising adding to the oil an antifoamant or solvent solution thereof, consisting of a polydimethyl siloxane oil having a viscosity at 25.degree. C. of 60,000 to 100,000 cSt and which exhibits a spreading coefficient of at least about 2 mN/m at both 24.degree. C. and 93.5.degree. C. with said lube oil, said antifoamant being added in an amount effective to reduce said foaming, said effective amount being about 1 to 10 ppm active ingredient based on the total lube oil.