REN Hegang, YANG Min, LI Huayi, LIU Pange, LIU Binyuan, HU Youliang, WANG Yanji. STUDIES ON AMINOSILANE COMPOUNDS AS EXTERNAL ELECTRON DONORS IN 1-BUTENE POLYMERIZATION. [J]. Acta Polymerica Sinica (12):1412-1418(2011)
DOI:
REN Hegang, YANG Min, LI Huayi, LIU Pange, LIU Binyuan, HU Youliang, WANG Yanji. STUDIES ON AMINOSILANE COMPOUNDS AS EXTERNAL ELECTRON DONORS IN 1-BUTENE POLYMERIZATION. [J]. Acta Polymerica Sinica (12):1412-1418(2011) DOI: 10.3724/SP.J.1105.2011.10367.
STUDIES ON AMINOSILANE COMPOUNDS AS EXTERNAL ELECTRON DONORS IN 1-BUTENE POLYMERIZATION
Four aminosilane compounds as external electron donors were synthesized and employed for 1-butene polymerization with MgCl2 supported Ziegler-Natta catalyst.The four aminosilane compounds are di(piperidinyl)dimethoxysilane (DPPDMS)
di(piperidinyl)diethoxysilane (DPPDES)
di(pyrrolidinyl)-dimethoxysilane (DPRDMS) and di(pyrrolidinyl)diethoxysilane (DPRDES).The effects of the structure of different external donors on the catalytic efficiency
isotacticity
melting temperature and molecular weight distribution of resulted poly(1-butene) were investigated in detail.Poly(1-butene)s have been characterized by using gel permeation chromatography (GPC) and differential scanning calorimetry (DSC) analysis.The results indicated that the aminosilane compounds possessing dimethoxy groups showed higher catalytic efficiency and isospecificity of polymers than those of compounds having diethoxy groups
whereas the aminosilane compounds containing diethoxy groups were benefit for obtaining broader molecular weight distribution polymers than those of compounds possessing dimethoxy groups.Furthermore
compared with DPPDMS or TEOS as external donor
DPPDMS/TEOS compound as complex external donor at a proper molar ratio not only increased the catalytic efficiency and isotacticity of polymers obtained
but also broadened the molecular weight distribution of the polymer.Moreover
the effects of different amount of hydrogen and concentration of external donor and cocatalyst on catalytic efficiency and isotacticity of polymers obtained were also studied.
The Effect of Rare Earth -Nucleating Agents on 1-Butene Bulk Polymerization and Crystallization Behavior
Synthesis of Long-chain-branched High-density Polyethylene with Ziegler-Natta Catalyst and ω-Alkenylmethyldichlorosilane Copolymerization-Hydrolysis Chemistry
Ethylene/Isoprene Copolymerization with Supported Ziegler-Natta Catalyst Containing Internal Electron Donor
Flowability of Ethylene-Propylene Copolymer in Situ-regulated by Long-chain Nonconjugated α,ω-Diolefin
Controlling Phase Morphology of EPR in Polypropylene Heterophasic Copolymer by Dichlorosilane-Functionalized Nonconjugated α,ω-Diolefin
Related Author
No data
Related Institution
Department of Polymer Science and Engineering, School of Chemical Engineering &amp
Daqing Petrochemical Research Center of Petrochemical Research Institute of Petro China
Shaanxi Yanchang Zhongmei Yulin Energy & Chemical Company
CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Acadamy of Sciences