Patent ID: 6455645
Filing Date: 2002-09-24
Classification: C08F

Abstract:
A process for making a telechelic composition the formula:Y1â€”Qâ€”Y2, wherein Q represents an oligomeric, optionally substituted, hydrocarbon residue with a molecular weight 300wherein n is an integer in the range 3&lE;n&lE;500, each Râ€², Râ€³, Râ€²â€³ comprise a component selected from the group consisting of H, a C1-C20 (cyclo)alkyl, a C6-C24 aryl, halogen, CN, a C1-C20 alkyl ester, an alkylamide, a C6-C24 aryl ester and arylamide, aldehydes, keto groups, ether groups, or wherein each Râ€², Râ€³, Râ€²â€³ is a constituent of a ring comprising a component selected from the group consisting of cyclic anhydrides, cyclic imides, cyclic alkanes and wherein Y1 and Y2 are functional groups that are identical or different;wherein the process comprises polymerization of: A) a monomer component comprising free-radically polymerizable, ethylenically unsaturated monomers of the formula Râ€²HC&boxH;CRâ€³Râ€²â€³, â€ƒin which Râ€², Râ€³, Râ€²â€³ have the above stated meaning and which contain no groups Y1, Y2 in the molecule, or a mixture of such monomers with B) an initiator component, C) a transition metal component, and D) one or more complex ligands which are capable of complexing the central atom(s) of the compound C, characterized in that polymerization is performed in the presence of E) a functionalizing reagent which has at least one C&boxH;C double bond, at least one of the desired functional groups Y1, Y2, and which terminates the chain.