Abstract
The process of copolymerization of ethylene with propylene can be readily controlled, so that copolymers with practically any desired composition can be obtained, with a specific alternation of monomer units and with a specific number of lateral branches. This paper examines the preparation of high-V.I. synthetic lube oils by the thermal decomposition of an ethylene/propylene copolymer with a molecular weight of 100,000-1,000,000, containing 40-85% (mole) ethylene, synthesized on ZieglerNatta organometallic systems. It determines the distillation curve, and the physicochemical and service properties of the distillation cuts. It finds that the oils have high viscosity indices, low solid points, and good oxidation resistance and anticorrosion properties. These oils can be used in vehicles and mechanisms operating in the Far North and in the Arctic.
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