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The catalytic system based on rare earth and magnesium stearate, new alcoholate of neodyme, use for the polymerization of compounds unsaturated
The catalytic system based on rare earth and magnesium stearate, new alcoholate of neodyme, use for the polymerization of compounds unsaturated
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机译:基于稀土和硬脂酸镁,钕的新醇化物的催化体系,用于不饱和化合物的聚合
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摘要
The invention concerns a catalytic system based on rare earth and magnesium and its use for polymerising unsaturated compounds. The inventive catalytic system is characterised in that it comprises a compound consisting of the reaction product between: a rare earth alcoholate; an organo-magnesium. The alcoholate can be prepared in particular by reacting a rare earth halide with an alkaline or alkaline-earth alcoholate. The invention also concerns a neodymium alcoholate characterised in that the alcoholate is a tert-butylate or a tert-amylate and it does not contain chlorine in its structure. The inventive system can be used more particularly for polymerising methyl ethylene or methacrylate and for copolymerising them.
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