Rare-earch catalyst for polymerization and copolymerization of diolefin
A rare-earch catalyst for polymerization or copolymerization of diolefin contains rare-earth compound (neodymium naphthenate or neodecanate), organic halohydrocarbon (tert-butyl chloride, benzyl chloride, or allyl chloride) and mixture of aluminium alkyl (AlEt3 or Al(i-Bu)3 and Al(i-Bu)2H). Its adva...
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Zusammenfassung: | A rare-earch catalyst for polymerization or copolymerization of diolefin contains rare-earth compound (neodymium naphthenate or neodecanate), organic halohydrocarbon (tert-butyl chloride, benzyl chloride, or allyl chloride) and mixture of aluminium alkyl (AlEt3 or Al(i-Bu)3 and Al(i-Bu)2H). Its advantages are high catalytic activity, controllable molecular weight of resultant, low dosage and highcontent of Cis-1,4 chain unit in obtained copolymer (more than 95%). |
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