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- 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。
- The effects of alkyl-naphthalene which is one of the pour point depressants (PPD) on the amount of wax precipitated from the simulation oil are studied in this work. 研究了降凝剂(PPD)对模拟油中蜡析出的影响,用高速离心机对特定温度下析出的蜡进行了分离,得到了加剂前后不同温度下的析蜡量;
- The acrylate-acrylamide copolymers [PAA] were synthesized.The effect of pour point depressants on the rheological properties and the pour point depress mechanism were investigated. 合成了丙烯酸二十二酯-丙烯酰胺共聚物(PAA)降凝剂，考察了降凝剂对原油流变性能的影响，并探讨了降凝剂的降凝机理。
- 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。
- 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。
- 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
- Preparation of Polymeric Pour Point Depressants for Shale Oil 页岩油降凝剂的合成
- Effects of raw material and product color of alkyl naphthalene on the pour point depression of lube oil were investigated. 考察烷基萘的原料（石蜡熔点）和产品色度对该剂降凝效果的影响。
- 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。
- Study and synthesis of pour point depressants for crude oil 原油降凝剂的研制
- Mass fraction of Pt being 0.4%, that of F being 1.50%, the bifunctional catalysts prepared by tertiary ammonium exchange h ave better property of pour point depression. 经 3次?交换 ;w(Pt)为 0 .;4%25;载体酸性改进剂w (F)为 1
- 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。
