Supported catalyst component, supported catalyst, their preparation, and addition polymerization process

The invention claims a on alumina the carrier catalyst component comprises carrier material, the alumina are fixed on the support, the method comprises a on the carrier the catalyst component and a transition metal compound the carrier catalyst, a method for preparing carrier of the catalyst component and carrier method of catalyst, and a use of the other method for a flame-retardant monomer on the carrier the catalyst is performed.