低等规聚丙烯的研制Ⅱ.间歇式液相本体法聚合工艺

采用间歇式液相本体法合成低等规聚丙烯（ＬＩＰＰ）,催化剂为自行研制的Ｚｉｅｇｌｅｒ－Ｎａｔｔａ型钛系低等夫聚丙烯配位催化剂,助催化剂为三异丁基铝,并给出了聚合工艺变量对产品收率和ＫＩＰＰ各性能关系的回归方程,比较了ＬＩＰＰ与等规聚丙烯（ＩＰＰ）间歇式液相本体聚合工艺的差别。     

CS—1型高效催化剂在小本体聚丙烯装置上的应用

通过对实际生产数据的统计，从原料、生产操作、生产能力、产品质量及生产成本等几个方面，对ＣＳ－１型高效催化剂与络合Ⅱ型催化剂进行了对比。说明了在现有小本体聚丙烯装置上采用ＣＳ－１型高效催化剂完全可以做到控制平稳生产，并能够显著提高产品质量，扩大生产能力。     

高效催化剂在聚丙烯装置上的应用

对国内目前正在应用（试用）的几种高经剂进行了分析，指出了间歇本体聚丙烯装置在应用高效催化剂时存在的问题；并就生产及试验结果进行了比较，结果显示了国内高效催化剂良好的应用前景。     

嵌段共聚聚丙烯在连续本体聚合装置上的工艺开发

从分子设计入手，通过选择适宜的催化剂，调整工艺参数、聚丙烯相对分子质量及其分布，控制聚合物中的乙丙橡胶量及结构，在连续本体聚丙烯装置上成功开发出了刚韧性平衡的嵌段共聚聚丙烯。     

4种高效催化剂在间歇式PP装置的应用

对ＣＳ－１型,ＣＳ－２型、Ｎ型和改进Ｎ型４种国产高效催化剂进行了对比,分析了４种高效催化剂各自的优缺点,说明在现有的间歇式液相本体法聚丙烯装置上采用改进Ｎ型或ＣＳ－２型高效催化剂可以平稳地控制生产,并能显著提高生产效率和产品质量。     

国产高效催化剂在间歇本体法聚丙烯装置上的应用

对国内目前正在应用（试用）的几种国产高效催化剂进行了分析，指出了间歇本体法聚丙烯装置在应用高效催化剂时存在的问题；并就生产及试验结果进行了比较。结果显示了国产高效催化剂良好的应用前景。     

聚丙烯连续本体聚合的新工艺

介绍我国自行开发的聚丙烯连续本体聚合新工艺(SPG PP)具有,丙烯单耗低,能耗低,丙烯单程转化率高,催化剂利用率高,设备生产效率高,对不同催化剂适应性强,产品质量好,单线生产能力大等特点。适用于间歇装置的改造,也适用于新建装置,若能使国内众多间歇本体聚合相继改造成SPGPP工艺生产装置,将使这些装置的生产水平跃上一个新台阶。     

球形催化剂在液相本体聚丙烯装置上的应用

在间歇液相本体法聚丙烯装置上采用CS-1型高效催化剂进行生产的同时,进行CS-2和HDC球形催化剂应用试验,两烯不需要再精制,结果表明,采用CS-2和HDC球形催化剂的单釜产量达到CS-1型高效催化剂的水平,产品质量符合Q/SHC001-1998要求,聚丙烯颗粒呈球形,加工流动性好,粉尘污染减少。     

SC型高效催化剂丙烯液相本体聚合

SC型高效催化剂是用无水MgCl_2、醇、蘸、TiCl_4以及添加剂制备的,SC型催化剂和A1Et_3助催化剂、Ph_2Si(OMe)_2外给电子体,用于丙烯液相本体聚合,丙烯在70℃聚合2h具有高效率(大于3万gPP/gCat),得到的聚丙烯等规度(大于98％)和堆密度(大于0.45g/cm~3)高,颗粒形态好,粒度分布窄,聚丙烯的MFR容易用氢调节。     

小本体聚丙烯专用料生产工艺的优化

探讨了利用小本体聚丙烯装置生产高熔融指数聚丙烯专用料的影响因素，对聚合催化剂、工艺操作条件等进行优化，通过改造和优化，生产出满足市场要求的专用料，取得较好的经济和社会效益。     

聚丙烯生产技术进展

综述了聚丙烯催化剂和生产工艺的研究进展情况，特别对茂金属聚丙烯催化剂和液相本体、气相本体聚合技术进行了详细的介绍。     

丙纶可染性技术进展

综述了丙纶的本体着色、未改性染色及改性后染色技术的各自进展情况。色母粒法、共混改性法和氯化表面改性法仍然具有较大优势,丙纶未改性染色及专用染料、共混改性丙纶染色技术将有更好的发展前景。有14篇参考文献。     

大庆石化公司聚丙烯装置节能降耗措施与应用

大庆石化分公司聚丙烯装置采用单环管液相本体均聚工艺,通过分析开工以来装置耗能、用水情况,找出影响装置耗能、用水的关键因素,并结合聚丙烯装置实际特点,通过采取工艺操作优化控制、技术改造,深入开展班组经济核算等措施,降低装置能耗,实现装置节能、节水的目标。     

我国聚丙烯技术的现状及发展

综述了我国聚丙烯(PP)催化剂、生产工艺和产品开发的现状及发展趋势。我国相继研制的代表性PP催化剂已实现工业化生产,成功替代了进口产品。今后应加快开发大型化的PP成套技术和适合于生产高性能产品的新工艺、新催化剂,尽快占领高附加值的PP产品市场,应对未来的国内外挑战。     

茂金属催化剂及其聚烯烃的开发

报导了中国石油化工总公司石油化工科学研究院近两年茂金属催化剂及其催化烯烃聚合技术的研究进展，间规选择性复合型茂金属论剂技术已开发成功；用基催化珙烯聚合，在国内首次得到合格的商业用间规聚丙烯；完成了限制几何构型复合型茂金属的合成探索，获得具有较好活性的系列催化剂。实现了茂金属催化剂的负载化为茂金属催化剂在相烯烃聚合工艺中的应用奠定了基础。     

聚丙烯固相接枝技术的研究进展

综述了聚丙烯(PP)固相接枝技术的最新发展,重点介绍了PP固相接枝的原理,讨论了接枝单体．接枝基体、引发剂、溶剂．催化剂．反应温度．反应时间对接枝率的影响。PP固相接枝技术在PP复合材料与共混合金中具有良好的使用效果和广阔的应用前景。     

Silica-Based Ziegler-Natta Catalysts: A Patent Review

Silica-based Ziegler-Natta catalysts are important industrially in the manufacture of polyethylene and polypropylene. They are scientifically very interesting because of the complex effects of porous silica on catalyst performance. This patent review explains how silica-based Ziegler-Natta catalysts are related to Phillips chromium-silica catalysts and explores their value for the gas phase and slurry processes for the manufacture of polyolefins. The subcategories dealt with are the following: magnesium-titanium-silica catalysts, which are valuable for high-density polyethylene, for the ethylene copolymers called linear low-density polyethylene;and ethylene-propylene rubber, and for isotactic polypropylene; vanadium-silica catalysts, which are useful in the polymerization and copolymerization of ethylene; and vanadium plus titanium-silica catalysts which often exhibit reactivity synergism. Dual-site and multisite catalysts are also reviewed.     

Silica-Based Ziegler–Natta Catalysts: A Patent Review

Silica-based Ziegler–Natta catalysts are important industrially in the manufacture of polyethylene and polypropylene. They are scientifically very interesting because of the complex effects of porous silica on catalyst performance. This patent review explains how silica–based Ziegler–Natta catalysts are related to Phillips chromium–silica catalysts and explores their value for the gas phase and slurry processes for the manufacture of polyolefins. The subcategories dealt with are the following: magnesium–titanium–silica catalysts, which are valuable for high-density polyethylene, for the ethylene copolymers called linear low-density polyethylene;and ethylene–propylene rubber, and for isotactic polypropylene; vanadium–silica catalysts, which are useful in the polymerization and copolymerization of ethylene; and vanadium plus titanium–silica catalysts which often exhibit reactivity synergism. Dual-site and multisite catalysts are also reviewed.     

Advances in the polymerization of polyolefins with coordination catalysts

A historical survey about the development of Ziegler-Natta catalysts for polymerization of propylene is given. After having employed catalysts based on titaniumtrichloride for several years, in the 70's catalysts of the so-called second generation were introduced, which are more effective and yield products of higher crystallinity. Catalysts of the so-called third generation and their morphological properties are extensively dealt with. These catalysts give high yields and highly stereoregular polymers and enable simplification of polypropylene technology and energy saving. In the future polypropylene manufacturing will probably consist only of the polymerization steps with no need for centrifuging, extruding or another post-treatment.     

Catalytic degradation of polypropylene I. Screening of catalysts

The catalytic degradation of polypropylene has been investigated in this study. Solid acid catalysts, such as silica-alumina and zeolites (HZSM-5, natural zeolite, Mordenite etc.), were screened for polypropylene degradation in the range of 350-450‡C. The degradation products of polypropylene, especially a liquid fraction, formed over solid acid catalysts, were analyzed by GC/MS. The degradation products are distributed in a narrow range of carbon number compared with those obtained by thermal degradation. The liquid fraction contained large amounts of iso-paraffins and aromatics as are present in the gasoline traction of petroleum. The natural zeolite catalyst (clinoptilolite structure, occurring in Youngil area of Korea) was an efficient catalyst for the polypropylene degradation. The acidity and characteristic pore structure of this zeolite appear to be responsible for the good performance. The effects of temperature and reaction tune on the product distribution have also been studied in this work.