Citation: . POLYMERIZATION OF METHYL METHACRYLATE WITH ORGANOLANTHANIDES AS SINGLE-COMPONENT CATALYSTS*[J]. Chinese Journal of Polymer Science, ;2001, 19(1): 85-87. shu

POLYMERIZATION OF METHYL METHACRYLATE WITH ORGANOLANTHANIDES AS SINGLE-COMPONENT CATALYSTS*

Received Date: 7 April 2000

It was first found that Ind2Y(μ-Et)2AlEt2 and Ind2LnN(i-Pr)2 (Ln = Y, Yb) exhibit extremely high catalytic activity in the polymerization of methyl methacrylate. The reactions can be carried out over a quite broad range of polymerization temperatures from -30 to 50℃. PMMA with high molecular weight (7.8 × l0-5) and high isotacticity (94%) can be obtained by using Ind2Y(μ-Et)2AlEt2, and narrow molecular weight distribution (Mw/Mn 2LnN(iPr)2(Ln = Y, Yb).
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