预聚合

本体法合成ABS树脂Ⅱ.预聚合反应动力学研究

Bulk polymerization of ABS resin ⅱ . Study on prepolymerization kinetics

Ti－Mg系载体催化剂乙烯加氢预聚合对乙烯气相聚合的影响

Effect of Ethylene Prepolymerization in C_2H_4 / H_2 Atmosphere with Ti-Mg Catalyst on Gas-phase Ethylene Polymerization

脲甲醛预聚合对酞菁绿G颜料微胶囊化的影响

The Effect of Pre-polymerization of Urea-formaldehyde on Microencapsulation of Phthalocyanine Green G

丙烯预聚合对于PP颗粒形态、主聚合阶段的聚合动力学以及聚合工艺都会产生影响。

Prepolymerization could exert an effect on powder morphology of PP , polymerization kinetics in main polymerization phase and polymerization technology .

溶解&反应热量仪和稀土配合物的热力学性质本体法合成ABS树脂Ⅱ.预聚合反应动力学研究

A Solution-Reaction Calorimeter and Thermodynamic Properties of Complexes of Rare Earth ; Bulk polymerization of ABS resin ⅱ . Study on prepolymerization kinetics

CS型催化剂在催化剂预聚合活性为600～800kg/g时，其质量性能与TK型催化剂质量相媲美；

CS catalyst is comparable to TK in catalytic performance when its pre-polymerization activity reaches to 600 ~ 800 kg / g.

预聚合阶段的反应机理和缩聚反应器的研究仍然是目前研究的热点。如何进一步提高酯交换法生产的PC色调和相对分子质量是今后研究工作的重点。

The studies on reaction mechanism of prepolymerization and polycondensation reactor are still hot topics nowadays while how to further improve optical property and molecular weight of PC will still be the research focus in the future .

综述了有关丙烯预聚合的最新进展，包括新的预聚合工艺及其对聚合过程、聚丙烯（PP）产品性能等的影响以及在超临界聚合上的应用等。

This paper reviewed the latest developments on prepolymerization of propylene , involving the new prepolymerization technology and its influences on polymerization process and properties of polypropylene ( PP ) product as well as its application in supercritical polymerization .

研究了用镁粉研制的Ti-Mg系乙烯气相聚合催化剂在各种条件下的预聚合反应，以及各种类型AlR3对预聚合反应的影响。

The prepolymerization with Ti-Mg Catalyst and the influence of products of prepolymerization on the gas-phase polymerization of ethylene are reported .

Ti-Mg催化剂的预聚合及其对乙烯气相聚合的影响

The Prepolymerization with Ti-Mg Catalyst and The Influence of Products of prepolymerization on the Gas - phase Polymerization of Ethylene

采用80℃下预聚合6h，160℃后聚合10h，0.25wt%的引发剂得到的纯PS不仅分子量较高，而且拉伸性能好。

The pure PS that polymerized at 80 ℃ for 6 hours , then polymerized at 160 ℃ for 10 hours , with 0.25 wt % coupling agent , has not only higher molecular weight but also better tensile performance .

对聚丙烯高效球形催化剂HDC进行了性能评价，并探讨了预聚合、聚合温度、时间、氢气浓度等因素对HDC聚合行为的影响。

This paper evaluated the performance of spherical catalyst HDC for propylene polymerization and explored the influences of prepolymerization , polymerization temperature , time and hydrogen concentration on the polymerization behaviour of HDC .

1-辛烯预聚合对乙烯/丙烯共聚合的影响

Studies of Ethylene / Propylene Copolymerization & Effect of 1-Octene Prepolymerization

生产聚苯乙烯预聚合釜的作用和选型

The Function and Selection of Prepolymerization Reactor for Polystyrene Production

第一步为预聚合反应，在反应器I中进行，停留时间30分钟左右；

The first step is pre - reaction in reactor I for 30 minuts .

载体型催化剂丙烯预聚合的研究

Studies on Propylene Prepolymerization with Supported Ti Catalyst

预聚合条件对高效催化剂催化乙烯气相聚合的影响

The effect of prepolymerization process on gas-phase polymerization of ethylene with highly active catalyst

辛烯-1预聚合的研究

The study of the prepolymerization of octene-1

聚丙烯催化剂预聚合工艺优化研究

Optimization for Prepolymerization Process of Polypropylene Catalyst

在较低预聚合温度和较高单体浓度时可获得较高的分子量。

Copolymers of higher molecular weight can be prepared at lower copolymerization temperature and higher monomers concentrations .

然后再在预聚合之前向混合溶液中加入不同的微量染料，合成成功后测试其光学性能。

Then added different dyes to the mixture by the pre-polymerization , after the synthetic is successful , we test its optical performance .

比较了经预聚合与不经预聚合催化剂气相聚合与淤浆聚合动力学行为及聚合反应结果。

The kinetic behaviors and the polymerization results of the gas-phase and slurry polymerization of ethylene with the prepolymerized catalyst and original catalyst have been compared .

讨论了催化剂浓度、聚合温度、预聚合时间、原料单体中杂质含量对共聚物特性粘度和转化率的影响。

Effects of concentration of catalyst , polymerization temperature , prepolymerization time , impurity contents in monomer on intrinsic viscosity of the copolymer and conversion were discussed .

考察了聚合反应条件，如溶剂种类、聚合温度、模板浓度、引发剂用量、转速、预聚合时间等对分子印迹聚合物微球特性的影响。

The effects of reaction conditions were studied , including the kind of solvent , polymerization temperature , the concentration of template and initiator , rotational speed and pre-polymerization time .

本文讨论了辛烯-1的预聚合工艺条件，着重研究了在后聚合中改变不同助催化剂时对催化效率和产物分子量的影响及其动力学行为。

The technological conditions of the prepolymerization of octene-1 were discussed . The influence of different co-catalysts on the catalytical efficiency , the molecular weight and the kinetic behavior in the polymerization period was emphasized .

从事实表查找代理键和多粒度事实预聚合两个角度着手，提出了在渐变维度表上的多路并行查找算法和在不同粒度上对事实数据进行聚合的算法。

From the two perspectives of surrogate key lookup of fact table and aggregation for fact data on the different granularity , a multi-way parallel lookup algorithm on slowly changing dimensions and an algorithm of aggregation for fact data on the different granularity are presented .

乙烯类单体预辐照聚合的研究

Study on the preirradiation polymerization of vinyl monomers

此场景的另一个副作用是数据库中的任何形式的实体化（预计算聚合）可能会被忽略，因为查询中不包含任何事实。

Another side effect to this scenario is that any form of materialization ( pre-calculated aggregates ) in the database may be ignored since no fact is included in the query .

通过预乳化乳液聚合工艺，合成了含官能团单体双丙酮丙烯酰胺（DAAM）、丙烯酰胺、N-甲基丙烯酰胺（NMA）的自交联丙烯酸酯乳液。

The self-crosslinking acrylate latex contained functional monomer DAAM 、 acrylamide and NMA through pre-emulsification polymerization process was prepared .

此处的预聚体聚合度为4，不溶于常温下的NaOH水溶液，也不溶于NaOH·EG溶液，却可溶于NaOH的水和EG的混合溶液。

The polymerization degree of the prepolymer is 4.And at normal temperature the prepolymer can 't be dissolved in NaOH aqueous solution or NaOH · EG solution , but it can be dissolved in NaOH solution mixed with aqueous and EG.