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Key statement: The invention relates to the use of polyorganosiloxanes having 3 or more siloxane units, which have one or more organic fractions R1, where R1 has one or more carbon-carbon multiple bonds and at least 4 carbon atoms, and wherein the presence of hydrocarbon fractions having a chain length of 5 to 50 carbon atoms is excluded, as additives in the processing of rubber.
Toward that goal, Chevron has developed a process that converts wax consisting of hydrocarbon molecules 20 to 50 carbon atoms long into low-viscosity, high-performance oils that last longer than existing engine oils do.