Cyclopymerization polymers from non-conjugated dienes
AssigneeMobil Oil Corporation
InventorsSuzzy C. Ho, Margaret M. Wu, Yusheng Xiong
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Abstract
Novel homopolymer and copolymer compositions produced from the polymerization of non-conjugated dienes have been discovered. The novel compositions are produced by an equally novel process comprising cyclopolymerization of non-conjugated dienes employing reduced valence state Group VIB metal oxide catalyst on porous support. The preferred catalyst comprises carbon monoxide reduced chromium on silica. Copolymers are formed by copolymerization of non-conjugated dienes with 1-alkenes in contact with the activated chromium on silica catalyst. The compositions are useful as lubricants and additives.
Claims11
An atactic liquid hydrocarbon homopolymer comprising irregular head-to-tail enchainment of randomly recurring units in the homopolymer backbone, said units having the structure ##STR11## wherein R.sub.1 is C.sub.1 -C.sub.20 alkyl or hydrogen and n is an integer of 1 to 100, said homopolymer having a bromine number between 1.5 and 10 and molecular weight between 1000 and 10,000.
An atactic liquid hydrocarbon homopolymer comprising irregular head-to-tail enchainment of randomly recurring units in the homopolymer backbone, said units having the structure ##STR12## wherein R.sub.2 is C.sub.1 -C.sub.20 alkyl or hydrogen and m is an integer of 1 to 100, said homopolymer having a bromine number between 1.5 and 10 and molecular weight between 1000 and 10,000.
A process for the production of an atactic liquid hydrocarbon homopolymer lubricant comprising polymerizing at least one non-conjugated diene having the structure ##STR13## wherein R.sub.3 comprises alkyl or hydrogen, and x has a value of 1-3 in contact with a reduced valence state Group VIB metal catalyst on a porous support under polymerization conditions, wherein said homopolymer contains irregular head-to-tail enchainment of randomly recurring units in the homopolymer backbone, said units having the structure ##STR14## wherein R.sub.2 is C.sub.1 -C.sub.20 alkyl or hydrogen and m is an integer of 1 to 100, said homopolymer having a bromine number between 1.5 and 10 and a molecular weight of at least 1000.
Dependencies are inferred from the claim text.