Patent ID: 6348437
Filing Date: 2002-02-19
Classification: C08G,C08L,C10M,C10N

Abstract:
A composition comprising a blend of (A) at least about 85 percent by weight of a polysiloxane having a viscosity of 20-100 mm2/s at 25Â° C. as determined by ASTM D 445-94; (B) 1.5-5.0 percent by weight of a polysiloxane having a viscosity of 200-30,000 mm2/s at 25Â° C. as determined by ASTM D 445-94; the polydispersity of the blend of polysiloxane (A) and polysiloxane (B) having a value which exceeds 1.5 as determined at 25Â° C. by Gel Permeation Chromatography; and the remainder of the composition to 100 percent being (C) an additive comprising a lubricity improving agent, an antifoam agent, and a corrosion inhibiting agent; the viscosity rise of the composition being less than one mm2/s when aged 14 days in an oven at 100Â° C., as determined by ASTM D 445-94; polysiloxanes (A) and (B) having the structure: where n has a value to provide polysiloxanes (A) and (B) with a viscosity in the range of 20-100 mm2/s and 200-30,000 mm2/s at 25Â° C. respectively: and R1 and R2 are alkyl radicals of 1-6 carbon atoms.