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公开(公告)号:US3819598A
公开(公告)日:1974-06-25
申请号:US20537171
申请日:1971-12-06
摘要: AN IMPROVED CATALYST COMPOSITION FOR THE POLYMERIZATION OF MONO 1-OLEFINS COMPRISING CHROMIUM OXIDE SUPPORTED ON A PRECIPITATE, POROUS SILICA HAING A SURFACE AREA OF NOT LESS THAN 150 SQUARE METERS PER GRAM AND WHEREIN THE AVERAGE DIAMETER OF THE SILICA PARTICLES IS LESS THAN 0.0005 MILLIMETER.