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- A pour point depressant (PPD) for improving the cold fluidity of diesel oils was studied. 摘要对柴油降凝剂进行了研究，降凝剂为苯乙烯、顺丁烯二酸酐及正十八胺三元共聚物。
- A terpolymer of styrene,diisooctyl maleate,octadelyl acrylate was synthesized as pour point depressant for base-oils. 合成了苯乙烯-马来酸二异辛酯-丙烯酸十八酯三元共聚物用作基础油降凝剂。
- At last,we discuses the use of pour point depressant and viscosity reducer for super viscosity crude oil. 同时对特稠油的降凝降粘应用作了一定探讨。
- Synthesis and purification of long chain alkyl acrylate as intermediate of pour point depressant were introduced . 介绍了降凝剂中间体丙烯酸高碳醇酯的合成和产品分离提纯方法。
- An application of wheel flow simulator in the evaluation of pour point depressant is described in this paper. 探讨了用转轮流动模拟器评价原油降凝剂的效果和模拟输油管道输送添加降凝剂含蜡原油的工业性试验的可行性。
- This paper studies shear effect on the viscosity and gel point of Daqing waxy crude beneficiated* by pour point depressant (PPD) through experiments. 通过管流剪切、过泵剪切模拟试验以及管输模拟试验,研究了剪切作用对加剂大庆原油粘度和凝点的影响。
- The pour point depressant(PPD)and drag reduction agent(DRA)play a key role in the oil transportation in Kelamayi Oilfield. “两剂”(降凝剂和减阻剂)在克拉玛依油田原油外输中发挥了非常重要的作用。
- The flowability improvement by using commercial pour point depressant WHP is studied for Zhengwangzhuang viscous crude oil of Shengli,containing 56. 实验研究了工业品原油降凝剂WHP改善含蜡56.;9%25、其中96
- Meanwhile according to the pour point depressant synergism's principle, we compounded EVA with polymer surface active agent. 同时根据降凝剂协同作用的原理，对其与高分子表面活性剂进行了复配实验。
- The terpolymer composed of ethylene,vinyl acetate and polyether of vinyl alcohol is a new surfactant type pour point depressant (WHP) with high molecular weight. 由乙烯、醋酸乙烯酯和乙烯醇聚醚组成的三元共聚物（WHP）是一种新型高分子表面活性剂型原油降凝剂。
- Polymethacrylate esters(PAE) with different viscosities were synthesized and evaluated in laboratory as pour point depressant (PPD) for many kinds of 0# diesels. 合成了一定相对分子质量或粘度的聚甲基丙烯酸高级酯（PAE），并在实验室评价了PAE对几种0%23柴油的低温流动性能的改进效果。
- The ideal additives for industrial gear oil in cold area should be comprised of improver of viscosity index, pour point depressant, S-P extreme pressure wear inhibitor and benzo-triazole fatty amine. 寒区工业齿轮油理想添加剂应由粘度指数改进剂、降凝剂、S-P型极压抗磨剂、酚型抗氧剂及苯三唑脂肪胺盐等组成。
- The research on the low temperature pumpability of oil shows that the pour point depressant has the remarkable improvement;It is difficult to solve the high temperature antifoaming of . 对油品低温泵送性能的研究表明,降凝剂具有明显改善作用;传统的抗泡剂已很难解决润滑油的高温抗泡沫问题,如何有效解决该问题正成为研制、生产高档油的一个挑战。
- The characteristic groups of polymeric pour point depressant(PPD)were analyzed by FT-IR and NMR techniques.The crystallization properties of various types of wax and PPD were measured by XRD. 采用红外光谱仪、核磁共振波谱仪对聚合物的合成特征基团进行了表征,并采用X射线衍射仪对不同型号蜡及降凝剂的结晶性能进行了分析测试。
- polymeric pour point depressant additive 聚合物降倾点添加剂
- The copolymers of EFMA have effects on pour point depression and viscosity reduction of waxy crude oil. 合成了EFMA降凝剂,并考察了它的合成条件和降凝效果。
- Study on the Progress of Pour Point Depressant 原油降凝剂研究进展
- Issues in the Research of Pour Point Depressant 降凝剂研究中应注意的问题
- A polymer VSMA,which could be used as diesel pour point depressants,was copolymerized with vinyl acetate,styrene,maleates and acylamide as material. 该聚合物可以作为柴油低温流动性能改进剂,降低柴油的冷滤点和凝点。
- This paper introduces the results of using pour point depressants(PPDs) for crude oil in long distance pipeline transportation in China. 我国已有多条原油长输管线应用降凝剂，革新了老管线传统的输油工艺和新管线传统的投产工艺，并取得了巨大的经济效益。
