-
1.发明授权Process for synthesizing overbased additives under constant pressure of carbon dioxide 失效在二氧化碳恒压下合成高碱性添加剂的方法
公开(公告)号：US4758360A
公开(公告)日：1988-07-19
申请号：US910947
申请日：1986-09-24
IPC分类号： C10M159/20 , C10M159/24 , C10M177/00 , C10N10/04 , C10N30/12 , C10M105/08
CPC分类号： C10M159/24 , C10M159/20
摘要： The present invention relates to a process for the synthesis of overbased additives obtained by carbonation under constant pressure of carbon dioxide, the process consisting of carbonating a reaction mixture comprising a derivative of an alkaline-earth metal and at least one surfactant in a diluent oil and a hydrocarbon solvent in the presence of an oxygeneous accelerator and a nitrogeneous accelerator, while maintaining a constant pressure of carbon dioxide above the reaction mixture, the carbon dioxide is thus progressively introduced as it is consumed, thereby allowing its concentration in the liquid medium not to become too high which could thereafter provoke the formation of insoluble over-carbonated products, the reaction to be self-controlled and to obtain excellent yields of overbased products having very high alkaline values and alkaline-earth contents, while however remaining fluid and stable.
摘要翻译： 本发明涉及一种合成通过碳酸化在二氧化碳的恒定压力下获得的高碱性添加剂的方法，该方法包括在稀释油中将包含碱土金属和至少一种表面活性剂的衍生物的反应混合物碳酸化， 在含氧促进剂和硝化促进剂存在下的烃溶剂，同时保持二氧化碳在反应混合物上方的恒定压力，因此二氧化碳在消耗时逐渐引入，从而使其在液体介质中的浓度不能 变得过高，这可能引起不溶性过碳酸化产物的形成，该反应是自我控制的，并获得具有非常高的碱性值和碱土含量的高碱性产物的优异产率，而剩余的流体和稳定性。
-
公开(公告)号：US5508112A
公开(公告)日：1996-04-16
申请号：US505371
申请日：1995-07-21
CPC分类号： C10C3/026 , C08L95/00 , Y10T428/31815
摘要： A process is provided for the preparation of bitumen-polymer compositions wherein bitumen is mixed at a composition between 100.degree. C. and 230.degree. C. with a block copolymer of styrene and a conjugated diene and a coupling agent containing a sulphur-donor compound for a duration of at least 10 minutes. The coupling agent is comprised of an elementary sulphur vulcanization agent and at least one sulphur-donor vulcanization accelerator from among morpholine disulphide, N,N'-disulphide of caprolactam and thiuram polysulphides.
摘要翻译： 提供了一种制备沥青聚合物组合物的方法，其中沥青在100℃和230℃之间的组合物与苯乙烯和共轭二烯的嵌段共聚物和含有硫供体化合物的偶联剂混合， 持续时间至少10分钟。 偶联剂由硫代吗啉，己内酰胺的N，N'-二硫化物和秋兰姆多硫化物中的至少一种硫供体硫化促进剂组成。
-
搜索结果
2 条记录 (耗时 0.019 秒)
