Polymerization of vinyl chloride and copolymerization with propylene by a ternary catalyst system

1972 ◽  
Vol 10 (4) ◽  
pp. 993-1000 ◽  
Author(s):  
Akira Akimoto ◽  
Toshirō Yoshida
Keyword(s):  
Vinyl Chloride ◽  
Catalyst System ◽  
Ternary Catalyst

scholarly journals Dual catalyst system for selective vinyl chloride production via ethene oxychlorination

2020 ◽  
Vol 10 (2) ◽  
pp. 560-575
Author(s):  
Matthias Scharfe ◽  
Vladimir Paunović ◽  
Sharon Mitchell ◽  
Roland Hauert ◽  
Shibo Xi ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Catalyst System ◽  
Dual System ◽  
Direct Production

A dual system featuring ZrO2-supported CeO2 and Ca-doped Al2O3 catalysts enables the direct production of vinyl chloride via ethene oxychlorination.

scholarly journals Telomerization of Vinyl Chloride with Chloroform Initiated by Ferrous Chloride-Dimethylacetamide under Ultrasonic Conditions

2015 ◽  
Vol 2015 ◽  
pp. 1-4
Author(s):  
Hua Qian ◽  
Hengdao Quan
Keyword(s):  
Reaction Time ◽  
Vinyl Chloride ◽  
Ultrasonic Irradiation ◽  
Catalyst System ◽  
Ferrous Chloride ◽  
Efficient Catalyst ◽  
The One ◽  
Ultrasonic Conditions

Telomerization of vinyl chloride with chloroform was investigated using ferrous chloride-dimethylacetamide system, and 42.1% yield, more than four times the one reported before, was achieved. The addition of ultrasound further improved the reaction and yield was raised to 51.9% with trace byproducts at highly reduced reaction time and temperature. Ferrous chloride-dimethylacetamide under ultrasonic irradiation acts as a very efficient catalyst system for the 1 : 1 telomerization.

Synthesis of Liquid Polyisoprene with High cis-1,4 Unit Content and Narrow Molecular Weight Distribution Using Neodymium Phosphate Catalyst

2019 ◽  
Vol 72 (6) ◽  
pp. 467 ◽  
Author(s):  
Jie Liu ◽  
Xin Min ◽  
Xiuzhong Zhu ◽  
Zichao Wang ◽  
Tong Wang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Catalyst System ◽  
Size Exclusion ◽  
Narrow Molecular Weight Distribution ◽  
13C Nmr Analysis ◽  
Exclusion Chromatography ◽  
Ft Ir ◽  
Ternary Catalyst

The polymerization of isoprene (Ip) initiated by a ternary catalytic system consisting of liquid Nd(P204)3 (Nd), Al(i-Bu)2H (Al), and CHCl3 (Cl) in cyclohexane was examined. The effects of order of addition and amount of Ip, Al, and Cl in the catalyst on the polymerization were evaluated. The molecular weight (Mn), molecular weight distribution (Mw/Mn), and microstructure of the polymer were characterized using size exclusion chromatography and multiangle light scattering, FT-IR, 1H NMR and 13C NMR analysis. The results indicate that the order of addition, i.e. Nd+Ip+Al+Cl and ratios of [Ip]/[Nd]=30, [Al]/[Nd]=20, and [Cl]/[Nd]=3 were essential for the optimized ternary catalyst system Nd(P204)3/Al(i-Bu)2H/CHCl3. The resulting liquid polyisoprene (LIR) has a high cis-1,4 unit content (>98%) and a narrow molecular weight distribution (Mw/Mn<1.2). The molecular weight of the polymer was precisely controlled.

Copolymerization of lactide, epoxides and carbon dioxide: a highly efficient heterogeneous ternary catalyst system

2021 ◽  
Vol 12 (11) ◽  
pp. 1700-1706
Author(s):  
Xiang Li ◽  
Ran-long Duan ◽  
Chen-yang Hu ◽  
Xuan Pang ◽  
Ming-xiao Deng
Keyword(s):  
Carbon Dioxide ◽  
Catalyst System ◽  
Polymer Chains ◽  
Polymer Chemistry ◽  
Highly Efficient ◽  
System P ◽  
Ternary Catalyst

The controlled copolymerization of mixed monomers that usually imparts distinct advantages into single polymer chains and requires a single versatile catalyst remains a key challenge in polymer chemistry.

One-pot copolymerization of epoxides/carbon dioxide and lactide using a ternary catalyst system

2018 ◽  
Vol 8 (24) ◽  
pp. 6452-6457 ◽  
Author(s):  
Xiang Li ◽  
Chenyang Hu ◽  
Xuan Pang ◽  
Ranlong Duan ◽  
Xuesi Chen
Keyword(s):  
Carbon Dioxide ◽  
Catalytic System ◽  
Chain Transfer ◽  
Catalyst System ◽  
Transfer Mechanism ◽  
One Pot ◽  
Multiblock Copolymer ◽  
System P ◽  
Ternary Catalyst

A PLA/PPC multiblock copolymer was prepared using a novel ternary catalytic system that proceeds via an intermolecular chain transfer mechanism.

scholarly journals Polymerization of Norbornene by Ternary Catalyst System of AlEt3-TiCl4-Halogen

1967 ◽  
Vol 70 (3) ◽  
pp. 375-377
Author(s):  
Shiro KOBAYASHI ◽  
Takeo SAEGUSA ◽  
Junji FURUKAWA
Keyword(s):  
Catalyst System ◽  
Ternary Catalyst
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