Pennzoil-quaker State Company

Other

Academy of Applied Science

Amherst Polymer Technology, Inc.

Penzoil-quaker State Company

James C W Chien

I-Ching Chiu

William J Heilman

Marvin D Rausch

William Heilmann

Laughlin G McCullough

Wei Song

Juan Carlos Flores

A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.

Ethylene alpha-olefin polymers, process and uses

Various vinylidene-containing polymers are obtained in the presence of a single-site catalyst. For example, the polymers include ethylene/isobutene copolymer, ethylene/propylene/isobutene terpolymer, ethylene/styrene/isobutene terpolymer, ethylene/&agr;-methyl-styrene/isobutene terpolymer, propylene/isobutene copolymer, styrene/isobutene copolymer, and &agr;-methyl-styrene/isobutene copolymer. These polymers may be used to formulate lubricant oils.

Vinylidene-containing polymers and uses thereof

Ethylene-alpha-olefin polymers, processes and uses

Disclosed is a monocyclopentadienyl metal compound that can polymerize polyolefins as part of a catalyst system. The monocyclopentadienyl compound can specifically be (C,H,CH,CH,NMe,)TiCl,.

Monocyclopentadienyl transition metal catalyst and olefin polymerization process

Disclosed are a thermoplastic elastomeric polypropylene (and other olefin homopolymerized polymers) made using a metallocene catalyst and a single olefin monomer, and a method of preparing the same to produce a chain of alternating stereo regular crystallizable segments and stereo-irregular non-crystallizable polymerized segments, the former acting as physical crosslinks between tee non-crystallizable segments to form a thermoplastic elastomeric material having good elastomeric properties.

Elastomeric polypropylene and other polyolefin elastomers, metallocene catalyst and method of ion preparation

This invention relates to polymer blends and the process for preparing naturally compatibilized polyolefin blends using a &ldquo;one-pot&rdquo; polymerization of a single monomer, whereby two homopolymers having different structures are produced as well as a third block copolymer having alternating sequences of the two structural segments of the two homopolymers. The formation of the block copolymer is established by solvent extraction and,C-NMR spectroscopy. The catalyst compositions enabling the direct synthesis of naturally compatibilized polymer blend is prepared by combining four components. The first two components are organometallic complexes of Group IVB or VIIIB elements. The third component is a cocatalyst which irreversibly reacts with at least one ligand on the transition metal complexes. The fourth component is a hydrocarbyl or oxyhydrocarbyl compound of Group IIIA metals, which functions as a cross-over agent.

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Amherst, MA, United States of America

James C W Chien