Petrochina Company Limited

China Building Materials Academy

Beijing Hang Bo New Material Technology Co., Ltd

East China University of Science

Baojun Zhang

Qian Chen

Sihan Wang

Shukun Sun

Deshun Zhang

Yali Wang

Libo Wang

Xiuhui Wang

Guizhi Wang

Buwei Yu

Fuling Huang

Xuemei Han

Jianzhong Li

Gang Wang

Yang Zhang

Wei Chen

Yu Wang

Fan Zhang

Min Liu

Jing Fu

Ning Zhang

Jingyuan Zhang

Sheng Xu

Peng Wei

Yan Chao Zuo

Yongjun Zhang

Zhiwei Xu

Hongxia Chen

Hua Li

Yongcheng Sun

Weihong Guan

Jiabo Qu

Yulong Li

Yunguang Han

Huimin Yuan

Dongmei Niu

Wenchao Zhang

Gongchen Yan

Puke Mi

Jinhua Qian

Panfeng Lu

Yuxin Gao

Ling Jiang

Yuanchun Mu

Lingting Fan

Dayan Du

Guiyue Guo

Xiangmin Yu

Chaoying Liu

Lihua Xing

Yingnan Ning

Yanfang Zhang

Dongting Kuang

Yuan An

Shulan Wang

Jingying Zhao

Yingjie Feng

Shubao Wan

Zhonghua Yang

Chunfeng He

Hongbo Ren

Defu He

Rui Meng

Xiwu Zhao

Shuqing Liu

Yingzi Guo

Provided is a windshield for a high-speed locomotive and preparation method thereof. The windshield comprises an anti-reflection film layer; a first chemical tempering glass layer coated with the anti-reflection film layer on a first side thereof; at least one second chemical tempering glass layer located on a second side of the first chemical tempering glass layer; the second chemical tempering glass layer being bonded together with the first chemical tempering glass layer via a layer of an adhesive film, and adjacent second chemical tempering glass layers also being bonded together via a layer of the adhesive film; an anti-splash film layer, located on an outer side of the outermost second chemical tempering glass layer and bonded together with the outermost second chemical tempering glass layer via a layer of the adhesive film; and a first electric heating element disposed inside the adhesive film layer in contact with the first chemical tempering glass layer. The windshield of the present invention can meet requirements for the high-speed locomotive, and especially can meet the safety requirements for the high-speed locomotive.

High-speed locomotive windshield and preparation method therefor

A catalyst for synthesizing 1-hexene from ethylene trimerization and its application are provided. Said catalyst consists of (a) the compound containing P and N, (b) electron donor, (c) Cr compound, (d) carrier and (e) accelerator. The molar ratio of (a), (b), (c), (d) and (e) is 0.5-100:0.5-100:1:0.5-10:50-5000. The catalyst is prepared by mixing the components of (a)-(e) in an ethylene trimerization apparatus in situ and ethylene is introduced into the apparatus continuously. The prepared catalyst can be used to synthesize 1-hexene from ethylene trimerization in the inert solvents. The trimerization is performed at 30-150&#xb0; C. and 0.5-10.0 MPa for 0.1-4 hours. The catalyst has high catalytic activity and high 1-hexene selectivity. During the process of ethylene trimerization, by-product polyethylene does not stick to the apparatus.

Catalyst or synthesizing 1-hexene from ethylene trimerization and application thereof

A method for synthesis of 1-decene oligomer is provided, wherein 1-decene is polymerized at 80-120&#xb0; C., 0.8-1.4 MPa in the presence of aluminum trichloride catalyst supported on gamma-alumina and n-hexane solvent where the volume ratio of 1-decene to n-hexane is 3:8-4:1. The catalyst is treated as follows: impregnating gamma-alumina carrier in 0.5-2.0 M of hydrochloric acid, sulfuric acid, nitric acid or mixtures thereof, then vacuum drying at 80-100&#xb0; C. and calcining at 400-800&#xb0; C.; dissolving 5-10 g of anhydrous aluminum trichloride in 100 ml of tetrachloromethane, trichloromethane or dichloromethane solvent; adding the obtained solution into 10-20 g of activated alumina carrier and obtaining the catalyst after vacuum drying. The conversion of 1-decene is 50 wt % or more. The oligomer has a kinematic viscosity at 40&#xb0; C. of 6.0-25 mm/s and a viscosity index of 160-262.

Method for synthesis of 1-decene oligomer

The present invention relates to a catalyst composition for ethylene oligomerization and the use thereof. Such catalyst composition includes chromium compound, ligand containing P and N, activator and accelerator; wherein the chromium compound is selected from the group consisting of acetyl acetone chromium, THF-chromium chloride and Cr(2-ethylhecanoate); general formula of the ligand containing P and N is shown as: in which R, R, Rand Rare phenyl, benzyl, or naphthyl. Ris isopropyl, butyl, cyclopropyl, cyclopentyl, cyclohexyl or fluorenyl; the activatior is methyl aluminoxane, ethyl aluminoxane, propyl aluminoxane and/or butyl aluminoxane; the accelerator is selected from the group consisting of 1,1,2,2,-tetrachloroethane, 1,1,2,2-tetrabromoethane, 1,1,2,2-tetrafluoroethane, and compounds having a formula of XRX, in which Xand Xare F, Cl, Br, I or alkoxyl, Ris alkylene or arylene group; the molar ratio of chromium compound, ligand containing P and N, activator and accelerator is 1:0.5&#x2dc;10:50&#x2dc;3000:0.5&#x2dc;10. After mixing the four components mentioned previously under nitrogen atmosphere for 10 minutes, they are incorporated to the reactor, or these four components are incorporated directly into the reactor. Then ethylene is introduced for oligomerization. Such catalyst can be used in producing 1-octene through ethylene oligomerization. It is advantageous in high catalysing activity, high 1-octene selectivity, etc. The catalytic activity is more than 1.0&#xd7;10g product&#xb7;maCr&#xb7;h, the fraction of Clinear &#x3b1;-olefin is more than 70% by mass.

Catalyst composition for ethylene oligomerization and the use thereof

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Beijing, China

Baojun Zhang