China Petroleum & Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Other

China Petroleum & Chemical Corporation Beijing Research Institute of Chemical Industry

China Petrochemical & Chemical Corporation

China Petroleum & Chemical Corporation and Beijing Research Institute of Chemical Industry

Wenbo Song

Shijun Zhang

Meifang Guo

Fuyong Bi

Huijie Hu

Luqiang Yu

Xiaomeng Zhang

Hao Zhang

Wei Zhang

Wei Chen

Jinliang Qiao

Jie Zhang

Kai Xu

Peng Guo

Zhichao Yang

Zifang Guo

Hua Yin

Zhenjie Liu

Hui Quan

Mingfu Lyu

Yaohui Xu

Dezhan Li

Hao Yuan

Qing Shao

Wenjun Wei

Lei Guo

Hui Zhao

Tao Liu

Xiaodong Wang

Xi Wang

Jie Fu

Hao Tang

Jie Lin

Dong Ma

Yuexiang Liu

Xianzhi Xia

Junling Zhou

Dongbing Liu

Rong Gao

Liangshi Wang

Yang Tan

Xiaofan Zhang

Hongtao Wang

Yun Jing Zhao

Bingquan Mao

Xinyang Li

Chen Wei

Jingyan An

Zhulan Li

Jingjing Lai

Shiyuan Xu

Qingqiang Gou

Liying Zhang

Junhui Zhang

Tingjie Huang

Aichun Yang

Hongbin Du

Zhaowen Ma

Yuanning Gu

Honghong Huang

Lusheng Wang

Ruen Wang

Huan Xu

Yujing Tang

Liping Hou

Weimin Ji

Rongmei Liu

Huiru Yang

Juziu Yang

Qingshan Ma

Peiqian Yu

Zhao Jin

Shuliang Han

Haokun Li

Yuanyuan Fang

Disclosed is a catalyst for olefin polymerization, comprising a main catalyst and a cocatalyst; the main catalyst is a bisphenol metal complex represented by formula I, and the cocatalyst comprises an organoaluminum compound; in formula I, R, R', R, R′ are the same or different, and are each independently selected from hydrogen and a substituted or unsubstituted C-Chydrocarbyl; R-R, R′-R′ are the same or different, and are each independently selected from hydrogen and a substituted or unsubstituted C-Chydrocarbyl; Rand Rare the same or different, and are each independently selected from hydrogen or a substituted or unsubstituted C-Chydrocarbyl; M and M′ are the same or different, and are selected from Group IV metals; and X is halogen;

Catalyst for olefin polymerization and polymerization method using same

A method for preparing an olefin-olefinic alcohol copolymer and an olefin-olefinic alcohol copolymer prepared by the method are provided. The catalyst used in the method for preparing the olefin-olefinic alcohol copolymer has a diimine metal complex as shown in Formula I.

Method for preparing olefin-polar monomer copolymer

A microspheric ionomer having a cross-linked structure, a preparation method therefor, applications thereof, and a preparation system thereof. The ionomer comprises structure units A represented by formula (1), structure units B represented by formula (2), and a cross-linking structure provided by a cross-linking agent, M being separately selected from H, a metal cation, and a straight chain, a saturated alkyl of branched or ring-shaped C-C, R being H or a methyl; and metal cations are introduced to part of structure units A in the ionomer. The ionomer shows an outstanding effect on nucleation of PET, serves as a nucleating agent for PET modification, so as to obtain a corresponding PET composition. A system and method for continuously preparing maleic acid ester ionomer microspheres and cross-linked maleic acid ionomer microspheres, so as to achieve continuous preparation, washing and separation of ionomer microspheres, effectively stabilizes the separation effect, and avoids frequent start and stop operations of a centrifuge.

Microspheric ionomer having cross-linked structure, preparation method therefor, applications thereof, and preparation system thereof

The invention relates to a flame-retardant thermoplastic material, comprising thermoplastic base resin, a flame retardant, and an optional antioxidant, wherein the flame retardant comprises a complex of phosphine oxide and a transition metal salt. The invention also relates to flame-retardant thermoplastic expanded beads. A foam molding prepared from the flame-retardant thermoplastic expanded beads has good flame-retardant and antistatic properties, has excellent mechanical properties and is widely used.

Flame-retardant thermoplastic material and expanded beads thereof

The present invention refers to a flame retardant comprising a complex formed by phosphine oxide and transition metal salt, wherein has good flame retardant property. The present invention also refers to a composite flame retardant and flame retardant antistatic composition. The present invention also further refers to a flame resistant method, which adds the abovementioned flame retardant, composite flame retardant or flame retardant antistatic composition into the material, so that said material has flame retardance or flame retardance and antistatic, and has excellent mechanical properties.

Flame retardant, composite flame retardant, flame retardant antistatic composition and flame resistant method

The invention discloses a process for preparing high-performance propylene polymers, the process utilizing a high activity, highly stereoselective Ziegler-Natta catalyst and two or more stages of polymerization carried out under different hydrogen concentrations to prepare propylene polymers having broad molecular weight distribution, wherein non-uniformness of isotacticity of molecular chains of the final propylene polymers is improved by adjusting or controlling stereoselectivity of catalytic active sites under different hydrogen concentrations, namely, making the low molecular weight fraction of the polymers having a higher isotacticity and making the high molecular weight fraction of the polymers having a lower isotacticity, thereby overcoming the drawbacks of the propylene polymers having broad molecular weight distribution known in the art. The resulting final polymers have excellent combined properties, in particular, remarkably improved mechanical properties.

Process for preparing high-performance polypropylenes

The present invention relates to a propylene-butene-1 random copolymer which has a butene-1 content of 1-6 mol % and a relative dispersity of butene-1, as determined according to NMR method, of greater than 98.5%. The propylene-butene-1 random copolymer of the present invention has a high relative dispersity of butene-1, as well as better transparency and heat resistance, so that it is more suitable for packaging food that may be edible after heating. Moreover, the copolymer has a lower xylene solubles content at room temperature. In addition, the present invention further relates to a method for preparing the copolymer and to a composition and an article comprising the copolymer.

Propylene random copolymer, method for its preparation, and compositions and articles containing the same

The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight distribution and containing 'very high molecular weight fraction' can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirement for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechanical properties, especially with very high melt strength. The present invention also provides a propylene homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10 g/10 min at 230&#xb0; C. with a load of 2.16 kg; (2) the molecular weight distribution M/Mis 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8 wt %; (4) M/Mis higher than or equal to 70. Said homopolymer can be used in the preparation of foam products, thermoforming products, biaxial stretching films, blown films and blow-molded products.

Propylene homopolymer having high melt strength and preparation method thereof

The present invention provides a propylene polymer composition for producing a biaxially oriented film, comprising propylene random copolymer and propylene homopolymer; wherein the propylene random copolymer is a copolymer of propylene and ethylene, optionally comprising one or more alpha-olefins of C-C; the propylene polymer composition has an overall isotacticity index, as determined by nuclear magnetic resonance method, of greater than or equal to 96.5%, and an ethylene content of greater than 0.3 wt %; and wherein, the melt flow rate of the propylene random copolymer is lower than that of the propylene homopolymer. The biaxially oriented polypropylene film produced by the propylene polymer composition of the present invention exhibits excellent physical properties, and has, in the absence of any stiffening agent, relatively higher modulus and stiffness. Moreover, the process for producing the biaxially oriented polypropylene film is featured with a good film-forming stability and a high film-forming stretching speed.

Propylene polymer composition and oriented film prepared thereby

The present invention relates to a catalyst component and a catalyst for olefin polymerization. The catalyst component utilizes magnesium halide and silica as composite support, and the particle morphology thereof can be improved by regulating the ratio of magnesium halide to silica. Further, the purpose of stabilizing the rate of catalytic polymerization reaction and improving the particle morphology of polymer so as to meet the requirements on catalyst performance of various polymerization processes can be achieved through the combination of the supports of the catalyst. In the meantime, when used in the polymerization of propylene, the catalyst of the present invention exhibits a relatively high polymerization activity and high stereospecificity.

Catalyst component and catalyst for olefin polymerization as well as use thereof

A catalyst for the polymerization of propylene comprising components (A), (B) and (C) is provided. Component (A) is a solid product prepared by dissolving a halide of magnesium in a solvent system consisting of an organic epoxy compound, an organic phosphorus compound and an inert diluent to form a homogeneous solution; mixing the homogeneous solution with a halide of titanium to form a mixture; precipitating a solid from the mixture in the presence of an auxiliary precipitant; treating the solid with a polycarboxylic ester to load the ester on the solid; and treating the ester loaded solid with the halide of titanium and the inert diluent. Component (B) is an organic aluminium compound, and component (C) is an organic silicon compound. The particle size of the catalyst can be adjusted by increasing the amount of the inert diluent at a low ratio of the epoxy compound to the phosphorus compound.

Catalyst for the polymerization of propylene and its use

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Beijing, China

Wenbo Song