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公开(公告)号：AU763313B2
公开(公告)日：2003-07-17
申请号：AU1931000
申请日：1999-12-03
Applicant: MOBIL OIL CORP
Inventor： COOLBAUGH THOMAS SMITH , LOVELESS FREDERICK CHARLES , MARLIN JOHN EMORY II , MATTHEWS DEMETREOS NESTOR , KLOSEK JOHN M
Abstract: The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated, functionalized, optionally modified, and post treated. The dispersant substances include a copolymer of two different conjugated dienes. The polymers are selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective functionalization. The polymers may be blended with lower molecular weight components. 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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公开(公告)号：CA2353463A1
公开(公告)日：2000-06-15
申请号：CA2353463
申请日：1999-12-03
Applicant: MOBIL OIL CORP
Inventor： MARLIN JOHN EMORY II , MATTHEWS DEMETREOS NESTOR , LOVELESS FREDERICK CHARLES , KLOSEK JOHN M , COOLBAUGH THOMAS SMITH
Abstract: The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated, functionalized, optionally modified, and post treated. The dispersant substances include a copolymer of two different conjugated dienes. The polymers are selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, permitting highly selective functionalization. The polymers may be blended with lower molecular weight components. Also provided are lubricant fluids, such as mineral and syntheti c oils, which have been modified in their dispersancy and/or viscometric properties by means of the dispersant substances of the invention. The addition of minor amounts of lower molecular weight ocmponents improves compatibility and reduces haze. 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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