ORGANIC TELLURIUM COMPOUND, METHOD FOR PRODUCING SAME, LIVING RADICAL POLYMERIZATION INITIATOR, METHOD FOR PRODUCING VINYL POLYMER, AND VINYL POLYMER
申请人:Kyoto University
公开号:US20200048192A1
公开(公告)日:2020-02-13
An organic tellurium compound is disclosed having a versatility that, when used as a living radical polymerization initiator, it is applicable to polymerization of a vinyl monomer in an aqueous vehicle without using any surfactant or dispersant. The organic tellurium compound is represented by a general formula (1),
where R
1
and R
2
each independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, A represents an alkali metal atom or an alkaline earth metal atom, x=1 when A is monovalent, x=½ when A is divalent, and R
3
is represented by a general formula (2),
where in the general formula (2) R
4
represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R
5
and R
6
each independently represent an alkylene group having 2 to 8 carbon atoms, and a represents an integer from 0 to 10.
本发明公开了一种有机碲化合物,具有多用途性,当用作活性自由基聚合引发剂时,可适用于水介质中乙烯单体的聚合,而无需使用任何表面活性剂或分散剂。该有机碲化合物由通式(1)表示,其中R1和R2分别独立地表示氢原子或具有1至8个碳原子的烷基基团,A表示碱金属原子或碱土金属原子,当A为一价时,x=1,当A为二价时,x=½,而R3由通式(2)表示,通式(2)中,R4表示氢原子或具有1至8个碳原子的烷基基团,R5和R6各自独立地表示具有2至8个碳原子的亚烷基基团,a表示0至10的整数。