Nickel complex pre-catalysts in ethylene polymerization: new approaches to elastomeric materials

2013 ◽  
Vol 3 (5) ◽  
pp. 1172 ◽  
Author(s):  
Rong Gao ◽  
Wen-Hua Sun ◽  
Carl Redshaw
Keyword(s):  
Ethylene Polymerization ◽  
Nickel Complex ◽  
New Approaches ◽  
Elastomeric Materials

Study the Influences of ZnEt2 on Ethylene Chain Transfer Polymerization

2012 ◽  
Vol 602-604 ◽  
pp. 672-675
Author(s):  
An Guo Xiao ◽  
Shi Biao Zhou ◽  
Qing Yun Zheng ◽  
You Ming Shen ◽  
Yong Bin Zhuan
Keyword(s):  
Ethylene Polymerization ◽  
Nickel Complex ◽  
Chain Transfer ◽  
Ion Pairs ◽  
Catalyst System ◽  
Chain Propagation ◽  
Polymerization Mechanism ◽  
System 1 ◽  
Chain Transfer Polymerization

The influences of ZnEt2 on ethylene chain transfer polymerization were investigated in detail and the polymerization mechanism was thoroughly analyzed. The results indicated that ZnEt2 contributed greatly to increase the activity of α-diimine nickel complex/ZnEt2/MAO(MAO: methylaluminoxane). It was striking that α-diimine nickel complex/ZnEt2 catalyst system (1/100 mol/mol) exhibited 8.0 ×104g/mol∙h activity, it was possible the formation of the ion pairs of Nickel and Zinc was convenient for ethylene chain propagation, however, the ion pairs were unstable in ethylene polymerization.

Ethylene polymerization and copolymerization with a polar monomer using an α-iminocarboxamide nickel complex activated by trimethylaluminum

2007 ◽  
Vol 46 (1) ◽  
pp. 54-59 ◽  
Author(s):  
Carlos L. P. Carone ◽  
Rubens Bisatto ◽  
Griselda B. Galland ◽  
Rene Rojas ◽  
Guillermo Bazan
Keyword(s):  
Ethylene Polymerization ◽  
Nickel Complex ◽  
Polar Monomer

Insight into the Mechanism of Thermal Stability of α-Diimine Nickel Complex in Catalyzing Ethylene Polymerization

2017 ◽  
Vol 36 (6) ◽  
pp. 1196-1203 ◽  
Author(s):  
Liang Zhu ◽  
Dandan Zang ◽  
Yi Wang ◽  
Yintian Guo ◽  
Baiyu Jiang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Ethylene Polymerization ◽  
Nickel Complex ◽  
Thermal Stability Of ◽  
Insight Into

Beyond autism: Challenging unexamined assumptions about social motivation in typical development

2019 ◽  
Vol 42 ◽  
Author(s):  
Karen Bartsch ◽  
David Estes
Keyword(s):  
Social Interest ◽  
Social Motivation ◽  
Typical Development ◽  
Typically Developing ◽  
New Approaches

Abstract In challenging the assumption of autistic social uninterest, Jaswal & Akhtar have opened the door to scrutinizing similar unexamined assumptions embedded in other literatures, such as those on children's typically developing behaviors regarding others’ minds and morals. Extending skeptical analysis to other areas may reveal new approaches for evaluating competing claims regarding social interest in autistic individuals.

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