Stereoselectivity of cycloolefin polymerization with WCl6-based catalytic systems
β Scribed by Mihai Dimonie; Simion Coca; Mircea Teodorescu; Lucia Popescu; Mircea Chipara; Valerian Dragutan
- Publisher
- Elsevier Science
- Year
- 1994
- Weight
- 444 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0304-5102
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Polymerization of styrene using catalytic systems based on nickel derivatives and methylaluminoxane (MAO) was studied. Among tested catalysts, nickel bis-(acetylacetonate) and nickel dichloride show the maximum activity. Bis(phosphine)nickel dichlorides exhibit lower activity, depending on the natur
## Abstract The polymerization of norbornene (NBE) was investigated in the presence of two novel pyrazolylimine nickel complexes [2β(C~3~HN~2~Me~2~β3,5){C(Ph)ο£Ύ[4βR~2~C~6~H~2~(R~1~)~2~β2,6]}NiBr~2~ (complex 1, R~1~ = ^i^Pr and R~2~ = H; complex 2, R~1~ = H and R~2~ = NO~2~)] activated by methylalumi