Uniroyal Chemical Company, Inc.

Thomas P Matan

Anthony DiMaio

A poly(&#x3b1;-olefin) copolymer obtained from the polymerization of at least one &#x3b1;-olefin having from 2 to about 20 carbon atoms and at least one bulky olefin, the process comprising polymerizing the monomers in the presence of hydrogen and a catalytically effective amount of a catalyst comprising the product obtained by combining a metallocene procatalyst with a cocatalyst; lubricant compositions comprising such poly(&#x3b1;-olefin) copolymer; and a method for improving the viscosity index of a lubricant composition using such poly(&#x3b1;-olefin) copolymer.

Process for the oligomerization of &#x3b1;-olefins having low unsaturation, the resulting polymers, and lubricants containing same

A process for the preparation of a poly(&agr;-olefin) copolymer is disclosed wherein the process comprises polymerizing at least one &agr;-olefin, and at least one bulky olefin, in the presence of hydrogen and a catalytically effective amount of catalyst comprising the product obtained by combining a metallocene procatalyst with a cocatalyst, ligand (Cp R ) and bridging group R contains at least two bulky groups.

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Naugatuck, CT, United States of America

Thomas P Matan