分散抗氧型乙丙共聚物粘度指数改进剂DAOCP的研制

采用乙丙共聚物粘度指数改进为原料，经马来酸酐接枝、胺化后与苯胺类抗氧化合物反应得到产品分散抗氧型乙丙共聚物粘度指数改进剂。用中试放大产品为粘度指数改进剂调制的SF／CD 15W／40内燃机组，功能剂总量比使用分散型乙丙共聚物为粘度指数改进剂的油减少一个百分点后仍通过了MSⅢD架评定试验。评定结果表明，产品主要性能达到了国外同类产品的质量水平，为工业化生产提供了依据。

PREPARATION OF A DISPERSIVE AND ANTIOXIDATIVE VISCOSITY INDEX IMPROVER DAOCP

Ethylene/propylene copolymer was grafted on maleic-an hydride and mixed with polyethylene-polyamine succeeded by reac ting with aniline oxidation resistant for preparing a dispersive and antioxidati ve viscosity index improver DAOCP. The dosage of the said improver was 1% less t han the dispersive ethylene/propylene copolymer for formulating SF/CD 15W/40 int ernal combustion engine oil, which passed through the MS-ⅢD sequence test. The evaluation result showed that the DAOCP product performance was equivalent to t he same type foreign product.