METHOD OF PREPARING "LIVING" RADICAL POLYMERS, AND POLYMERS Russian patent published in 2008 - IPC C08F4/00 C08F297/00 C08F293/00 C08F257/02 C07C395/00 

Abstract RU 2315775 C2

FIELD: polymer production.

SUBSTANCE: invention provides a method for preparing "living" vinyl polymer via "living" radical polymerization characterized by that vinyl monomer is polymerized using organotellurium compound depicted by formula (1) and azo-type polymerization initiator, where R1 represents C1-C8-alkyl, optionally substituted aryl, or aromatic heterocyclic group; each of R2 and R3 represents hydrogen atom or C1-C8-alkyl; and R4 optionally substituted aryl aryl, aromatic heterocyclic group, acyl, oxycarbonyl, or cyano; said organotellurium compound and said azo-type polymerization initiator being used at molar ratio 1:(0.1-100), respectively. "Living" vinyl polymer is also described as well as mixture of organotellurium compound depicted by formula (1) and azo-type polymerization initiator wherein the two components are present at weight ratio as above.

EFFECT: achieved preparation of "living" vinyl polymer with precisely controlled molecular mass and molecular mass distribution.

5 cl, 2 tbl, 32 ex

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RU 2 315 775 C2

Authors

Jamago Sigeru

Josida Dzuniti

Kamesima Takasi

Dates

2008-01-27Published

2004-02-17Filed