ALKYLENE OXIDE POLYMERIZATION USING A DOUBLE METAL CYANIDE CATALYST COMPLEX AND A MAGNESIUM, GROUP 3 - GROUP 15 METAL OR LANTHANIDE SERIES METAL COMPOUND
申请人:Laitar David S.
公开号:US20130289236A1
公开(公告)日:2013-10-31
Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
在双金属氰化物聚合催化剂和某些镁、3-15族金属或镧系金属化合物的存在下进行烯丙基氧化物聚合反应。镁、3-15族金属或镧系金属化合物的存在提供了多种好处,包括更快的催化剂活化、更快的聚合速率以及减少形成超高分子量聚合物的数量。这种催化剂混合物在制备低当量重聚醚时具有意外的有用性。