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A catalyst for producing ultrahigh molecular weight polyethylene and methods for producing ultrahigh molecular weight polyethylene USING SUCH CATALYST
A catalyst for producing ultrahigh molecular weight polyethylene and methods for producing ultrahigh molecular weight polyethylene USING SUCH CATALYST
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机译:使用这种催化剂生产超高分子量聚乙烯的催化剂和生产超高分子量聚乙烯的方法
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摘要
The present invention provides a catalyst for producing an ultra high molecular weight polyethylene and also a method for preparation of an ultra high molecular weight polyethylene with the use of said catalyst. The catalyst of the present invention is prepared by a process comprising: (i) producing a magnesium compound solution by contact-reacting a magnesium compound and an aluminum or boron compound with alcohol; (ii) contact-reacting the said solution with an ester compound containing at least one hydroxy group and a silicon compound containing an alkoxy group; and (iii) producing of a solid titanium catalyst by adding a mixture of a titanium compound and a silicon compound thereto. The catalyst prepared by the present invention has excellent catalytic activity, and it helps to produce an ultra-high molecular weight polyethylene with large bulk density and narrow particle distribution without too large and minute particles.
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