HIGH MOLECULAR WEIGHT POLYOXYALKYLENE WITH LOW GLASS TRANSITION TEMPERATURE, PRODUCED BY THE GRAFTING THROUGH METHOD
申请人:Covestro Deutschland AG
公开号:US20200377652A1
公开(公告)日:2020-12-03
A method for preparing polyoxyalkylene monomers, comprising the step of the reaction of one or more H-functional starter substance(s), one or more alkylene oxides and carbon dioxide in the presence of a DMC catalyst is characterized in that at least one of the H-functional starter substance(s) comprises a carbon-carbon double bond, wherein the carbon-carbon double bond is part of a cyclic structure. The macromonomers obtained can be used in a method for preparing polyoxyalkylene brush polymers, wherein this method comprises the step of the reaction with an olefin metathesis catalyst. The polyoxyalkylene brush polymers obtained may subsequently be crosslinked.