| http://www.w3.org/ns/prov#value | - In the stereoregular polymerization of the alphaolefins CH2 =CHR, in which R is an alkyl or aryl radical containing 1 to 8 C, use is preferably made of Al trialkyl compounds, especially when complexed with an electron-donor compound (ED) employed in amounts of from 0.01 to 1 mole per mole of Al alkyl compound.
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