| 摘要 |
This invention discloses a process for producing a polymer by controlled polymerization which comprises polymerizing at least one monomer in the presence of a free radical control agent of the structural formula: (Z)-(R<SUP>1</SUP>)<SUB>n</SUB>, wherein n represents an integer from 1 to about 6; wherein Z represents an aromatic or aliphatic moiety containing from 1 to about 20 carbon atoms; wherein R<SUP>1 </SUP>represents a moiety of the structural formula: wherein R<SUP>2 </SUP>represents a moiety selected from the group consisting of alkyl groups, alkenyl groups, alkynyl groups, aryl groups, heteroaryl groups, and alkaryl groups; wherein the alky groups, alkenyl groups, alkynyl groups, aryl groups, heteroaryl groups, and alkaryl groups can be substituted, unsubstituted, linear, branched or cyclic; and wherein Ar represents a p-alkoxyphenyl group having an alkoxy moiety that contains from 1 to 8 carbon atoms. For instance, the free radical control agent can be of the structrul formula: wherein R<SUP>2 </SUP>represents a moiety selected from the group consisting of alkyl groups, alkenyl groups, alkynyl groups, aryl groups, heteroaryl groups, and alkaryl groups; wherein the alky groups, alkenyl groups, alkynyl groups, aryl groups, heteroaryl groups, and alkaryl groups can be substituted, unsubstituted, linear, branched or cyclic; and wherein Ar represents a p-alkoxyphenyl group having an alkoxy moiety that contains from 1 to 8 carbon atoms.
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