Chemistry of hydrocarbon compounds – Product blend – e.g. – composition – etc. – or blending process... – Component of indefinite molecular weight greater than 150
Patent
1995-06-07
1997-05-27
Caldarola, Glenn A.
Chemistry of hydrocarbon compounds
Product blend, e.g., composition, etc., or blending process...
Component of indefinite molecular weight greater than 150
585 7, 585 8, 585 10, 585 11, 585 17, 585 19, 585 24, 585507, 585508, 526337, 526340, C10M14310, C10M14312, C08F23600
Patent
active
056334150
ABSTRACT:
The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated and functionalized. The dispersant substances include compositions including a copolymer of two different conjugated dienes, a copolymer of a p-alkylstyrene and a conjugated diene, or a homopolymer of a conjugated diene. The polymers are selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective functionalization. Also provided are lubricant fluids, such as mineral and synthetic oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. Also provided are methods of modifying the dispersancy and/or viscometric properties of lubricating fluids such as mineral and synthetic lubricating oils. The dispersant substances may also include a carrier fluid to provide dispersant concentrates.
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Brandes Ellen B.
Loveless Frederick C.
Caldarola Glenn A.
Cuomo Lori F.
Hailey Patricia L.
Mobil Oil Corporation
Santini Dennis P.
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