| 发明名称 | Method for dewaxing mineral oil compositions | ||
| 摘要 | The present invention relates to a lubricant composition for a process for reducing the paraffin content of mineral oil compositions, by providing a mineral oil composition with a dewaxing aid, cooling to form a paraffin precipitate and at least partly removing the paraffin precipitate formed. The dewaxing aid used is a copolymer mixture comprising at least three copolymers, the copolymers differing in the composition of the repeat units. | ||
| 申请公布号 | US9540575(B2) | 申请公布日期 | 2017.01.10 |
| 申请号 | US201213982498 | 申请日期 | 2012.02.06 |
| 申请人 | Evonik Oil Additives GmbH | 发明人 | Koschabek Rene;Stoehr Torsten;Weber Markus;Unglert Andre;Tschepat Wolfgang |
| 分类号 | C10G73/12;C10G29/22;C08F220/18;C10G21/16;C10G31/06;C10G73/04;C10G73/06;C10M101/02 | 主分类号 | C10G73/12 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A process for reducing a paraffin content of a mineral oil composition, the process comprising: adding a dewaxing aid to a mineral oil composition to obtain a mixture, cooling the mixture to form a paraffin precipitate, and at least partly removing the paraffin precipitate, wherein the dewaxing aid is a copolymer mixture comprising at least four copolymers, the copolymers of the copolymer mixture differ in composition of repeat units, and have repeat units derived from one or more alkyl methacrylates having 16 to 18 carbon atoms, and repeat units derived from one or more alkyl acrylates having 19 to carbon atoms, wherein the copolymer mixture is obtained by copolymerization of a monomer mixture consisting of at least one alkyl acrylate and at least one alkyl methacrylate in one polymerization step. | ||
| 地址 | Darmstadt DE | ||