Patent ID: 7244796
Filing Date: 2007-07-17
Classification: C08F

Abstract:
1. A non-solution method of preparing a soluble branched polymer comprising mixing together a monofunctional monomer having one polymerisable double bond per molecule with from 0.5–100% w/w, based on the weight of the monofunctional monomer, of a polyfunctional monomer having at least two polymerisable double bonds per molecule and from 0.0001–50% w/w, based on the weight of the monofunctional monomer, of a chain transfer agent and optionally a free-radical polymerisation initiator and thereafter reacting said mixture to form said polymer, such that the conversion of monomer to polymer is greater than 90% and wherein the weight average molecular weight (Mw) of the branched polymer is in the range of 2,000 to 200,000, wherein said reacting of said mixture to form said polymer is performed in one step.