China Petroleum & Chemical Corporation

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

Research Institute of Petroleum Processing, Sinopec

China Paeto-chemical Corporation

Ping Gao

Wei Chen

Yuexiang Liu

Xianzhi Xia

Weili Li

Jigui Zhang

Renqi Peng

Zhihui Zhang

Jin Zhao

Yang Tan

Suzhen Qiao

Xinsheng Wang

Tianyi Zhang

Ruilin Duan

Futang Gao

Ying Li

Hongmei Liu

Xiaodong Wang

Maoping Yin

Linna Yang

Xiaoyuan Wang

Jie Lin

Mingzhi Gao

Yongtai Ling

Jinfeng Wang

Changyou Ma

Hongbo Ji

Hongbin Du

Yisen Wang

Jing Ma

Jinqiang Mo

Xiuqin Li

Jiuhua Chen

Lixin Yan

Qingshan Ma

Jiyu Li

Longxiu Dai

Qiwei Duan

Tongxuan Zhang

Luqing Yu

A magnesium halide adduct represented by the formula (I): MgX.mROH.nE.pHO, in which X is chlorine, bromine, a C-Calkoxy, a C-Ccycloalkoxy or a C-Caryloxy, with the proviso that at least one X is chlorine or bromine; R is a C-Calkyl, a C-Ccycloalkyl or a C-Caryl; E is an o-alkoxybenzoate compound represented by the formula (II): in which Rand Rgroups are independently a C-Clinear or branched alkyl, a C-Ccycloalkyl, a C-Caryl, a C-Calkaryl or an C-Caralkyl, the Rand Rgroups are identical to or different from the R group; m is in a range of from 1.0 to 5.0; n is in a range of from 0.001 to 0.5; and p is in a range of from 0 to 0.8, is disclosed. A catalyst component useful in olefin polymerization, which comprises a reaction product of (1) the magnesium halide adduct, (2) a titanium compound, and optionally (3) an electron donor compound, is also disclosed. 

Spherical magnesium halide adduct, a catalyst component and a catalyst for olefin polymerization prepared therefrom

Spherical carriers for an olefin polymerization catalyst, catalyst components, catalysts, and preparation methods therefor are disclosed. The method for preparing the spherical carriers comprises the following steps: (1) reacting, in the presence of at least one polymeric dispersion stabilizer, a magnesium halide with an organic compound containing active hydrogen to form a complex solution; (2) reacting said complex solution with an alkylene oxide-type compound to directly precipitate solid particles; and (3) recovering the solid particles to obtain spherical carriers. When a catalyst prepared by using the present spherical carrier is used in propylene polymerization, said catalyst exhibits high polymerization activity and high stereo-directing ability.

Spherical carriers for olefin polymerization catalyst, catalyst components, catalyst, and preparation methods therefor

The present invention provides a catalyst component for olefin polymerization and a preparation method thereof, and a catalyst for olefin polymerization and an application thereof. The catalyst component for olefin polymerization comprises reaction products of the following components: (1) a solid component; (2) at least one titanium compound; and (3) at least two internal electron donors, wherein the solid component comprises a magnesium compound represented by formula (1) and an epoxide represented by formula (2), wherein Ris a C-Clinear or branched alkyl; Rand Rare identical or different, and are independently hydrogen or unsubstituted or halogen-substituted C-Clinear or branched alkyl; X is halogen; m is in a range of from 0.1 to 1.9, n is in a range of from 0.1 to 1.9, and m+n=2. 

Catalyst component for olefin polymerization, preparation method thereof, and catalyst comprising same

A catalyst component for olefin polymerization is disclosed, which comprises at least one diol ester type electron donor compound (a) and at least one diether type electron donor compound (b) among others, wherein the molar ratio of a to b is 0.55-50. A preparation method of the catalyst component, a catalyst comprising the catalyst component, and an olefin polymerization method using the catalyst which can especially be used for preparation of polypropylenes of low ash contents are also disclosed.

Catalyst component for olefin polymerization and preparation method thereof

A spheric magnesium compound comprises a reaction product of at least the following components: (a) a magnesium halide having a formula of MgXR, wherein X is independently chloride or bromide, R is a C-Calkyl, a C-Caryl, a C-Calkoxy, or a C-Caryloxy, and n is 0 or 1; (b) an alcohol compound; and (c) an epoxy compound having a general formula (I), wherein Rand Rare independently hydrogen, a C-Clinear or branched alkyl, or a C-Clinear or branched haloalkyl. The magnesium compound has characteristic DSC curve and X-ray diffraction pattern, and can be used as a carrier for olefin polymerization catalyst.  

Carrier for olefin polymerization catalyst, preparation method and application thereof

A catalyst component for olefin polymerization is disclosed, which comprises a reaction product of the following components: (1) a spheric carrier; (2) a titanium compound; and optionally, (3) an electron donor, wherein the spheric carrier comprises a reaction product of at least the following components: (a) a magnesium halide represented by a general formula of MgXR, wherein X is independently chloride or bromide, R is a C-Calkyl, a C-Caryl, a C-Calkoxy, or a C-Caryloxy, and n is 0 or 1; (b) an alcohol compound; and (c) an epoxy compound represented by a general formula (I), wherein Rand Rare independently hydrogen, a C-Clinear or branched alkyl, or a C-Clinear or branched haloalkyl. When the catalyst of the invention is used in olefin polymerization, in particular in propylene polymerization, at least one of the following desired effects can be achieved: high polymerization activity of catalyst, high stereospecificity of catalyst, good hydrogen response of catalyst, high stereoregularity of polymer having high melt index, and low content of polymer fines. 

Catalyst component for olefin polymerization and catalyst comprising the same

A magnesium halide adduct is provided, comprising at least one compound of the formula MgXY, at least one compound of the formula ROH, methanol, at least one modifying agent chosen from DOE and o-hydroxy benzoates, and optionally water. Also provided herein are a catalyst component comprising the magnesium halide adduct, a catalyst for olefin polymerization comprising the catalyst component; the respective processes for preparing the magnesium halide adduct and the catalyst component; use of the magnesium halide adduct for preparing the catalyst component, use of the catalyst component in a catalyst for olefin polymerization and use of the catalyst in olefin polymerization; and a process of olefin polymerization.

Magnesium halide adducts, catalyst components and catalysts comprising the same, and preparation processes thereof

Disclosed is a process for the preparation of bistriphenylsilyl chromate, wherein triphenylchlorosilane, potassium dichromate and any one selected from alkali metal oxides, alkali hydroxides and alkali metal carbonates are reacted in, as solvent, a mixture of glacial acetic acid and a hydrocarbon solvent at a certain temperature, whereby bistriphenylsilyl chromate having high purity can be obtained with high yield.

Process for the preparation of bistriphenylsilyl chromate

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Beijing, China

Ping Gao