Hyperbranched polymers

摘要

A macromonomer of the general formula Ax L By in which A is an alkenyl-containing or alkynyl-containing group; B is an SiH-containing group of the formula -OSiR2H; one of x and y is 1, and the other is 2 or 3; L is a spacer group which includes a polysiloxane moiety of the formula (R2SiO)n; each R independently is an alkyl, haloalkyl or aryl group; and n is an integer of at least 3 is disclosed, as well as a process for making it. Also disclosed is a method of forming a hyperbranched polymer, which comprises contacting a macromonomer according to any of Claims 1 to 10 with a catalyst comprising a Group VIII metal, and the polymers thus obtained.