China Petroleum Chemical Corporation

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

Other

Sinopec Beijing Research Institute of Chemical Industry

Chuanqing Li

Lin Xu

Aimin Liang

Guozhu Yu

Jie Zhang

Ximing Xie

Wei Sun

Hui Liu

Jiangwei Zhao

Yishuang Xin

Jinmei Tan

Nini Wang

Xinhe Kang

Wei Li

Chao Wang

Hui Li

Xue Wang

Shichao Wang

Liangliang Yang

Sufang Ouyang

Song Lu

Pengfei Lv

Ke Jiang

Wenjuan Sun

Huiling Liu

Xia Zhao

Bing Yan

Liyun Zhao

Liangliang Qu

Guojuan Zhang

Guixi Luan

Weipin Zhou

The present invention provides a functional diene polymer, a preparation method thereof and a rubber composition comprising the functional diene polymer. The functional diene polymer comprises at least one type of conjugated diene structural units and silane coupler functional units represented by formula (I) in its molecular chain, and the number-average molecular weight of the functional diene polymer is 50,000&#x2dc;1,000,000; R-Rare C-Clinear or branched alkyl or heteroatom-containing C-Clinear or branched alkyl, and the heteroatom is selected from one or more of halogen, oxygen, sulfur, silicon, and phosphorus. Not only the relationship between the wet slip resistance and the rolling resistance of the functional diene polymer is effectively improved, but also the offensive odor produced in the rubber mixing process owing to the addition of the silane coupler is reduced. 

Functional diene polymer, preparation method thereof, and rubber composition comprising the same

Provided is a copolymer rubber, comprising a copolymer having a star-shaped block structure (SIB-PA)-X, wherein SIB is a block comprising styrene, butadiene, and isoprene as constituent monomers; PA is a block comprising butadiene or isoprene as a constituent monomer; X is the residue of at least one coupling agent; and n=2-4. Also provided is a process for preparing the copolymer rubber and use thereof.

Copolymer rubber having a star-shaped block structure, the preparation process and use thereof

Disclosed herein are polybutadiene grafted isoprene rubber, processes for preparing polybutadiene grafted isoprene rubber, mixed compositions and vulcanized forms thereof.

Polybutadiene grafted isoprene rubber, processes for preparing polybutadiene grafted isoprene rubber, mixed compositions and vulcanized forms thereof

The method for preparation of polyisoprene includes conducting polymerization reaction of isoprene in a first organic solvent under the presence of rare earth catalyst I and rare earth catalyst II, to obtain polyisoprene with bimodal molecular weight distribution, wherein the polymerization reaction conditions are controlled to ensure the peak molecular weight of the high molecular weight component fraction in the polyisoprene is 1&#xd7;10-2&#xd7;10and the peak molecular weight of the low molecular weight component fraction is 2&#xd7;10-4&#xd7;10, and the weight ratio of content of the high molecular weight component fraction to the low molecular weight component fraction is 1-25:1. The molecular weight distribution of the polyisoprene obtained with the method provided is bimodal distribution; therefore, the polyisoprene not only has the mechanical properties of polyisoprene with high molecular weight, but also has the processability of polyisoprene with low molecular weight.

Polyisoprene, preparation method thereof, polyisoprene rubber compounds and vulcanizate therefrom

Disclosed are catalyst compositions for isoprene polymerization formed from components comprising (A) at least one titanium halide; (B) at least one organic aluminum compound comprising at least one alkyl aluminum of formula AlR, wherein each of the three Rs is independently chosen from linear and branched Calkyl groups; and (C) at least one electron donor comprising at least one polyether compound of formula (I) and/or at least one tetrahydro-furfuryl ether compound of formula (II). Also disclosed are processes for preparation of the catalyst compositions and processes using the catalyst compositions for isoprene polymerization.

Catalysts for polymerization of isoprene and preparations and uses thereof

Tin-containing organolithium compounds and preparation thereof

Growing community of inventors

Beijing, China

Chuanqing Li