PROCESS FOR PRODUCING POLYMER TERMINATED WITH OPTIONALLY PROTECTED FUNCTIONAL GROUP
申请人:KURARAY Co. LTD.
公开号:EP0704460A1
公开(公告)日:1996-04-03
A process for producing polymers having terminal functional group which may be protected, comprises polymerizing a radical-polymerizable monomer with a polymerization initiator comprising at least one member selected from the group (A) consisting of thio-S-carboxylic acids represented by the following general formula (1) and dithiocarboxylic acids represented by the following general formula (2) and at least one member selected from the group (B) consisting of polysulfides represented by the following general formula (3), polysulfides represented by the following general formula (4) and sulfoxides:
wherein R¹ represents a hydrocarbon group which may have a substituent including functional group;
wherein R² represents a hydrocarbon group which may have a substituent including functional group;
wherein R³ and R⁴ each represents a hydrocarbon group which may have a substituent including functional group and n is an integer of 2 or more; and
R⁵- (S)m- R⁶ (4)
wherein R⁵ and R⁶ each represents a hydrocarbon group having a functional group and m is an integer of 2 or more. This process can produce polymers with which functional groups have been introduced into one end or both ends thereof, irrespective of the rate of polymerization or the degree of polymerization of the polymer that forms.
一种生产具有可被保护的末端官能团的聚合物的工艺,包括用聚合引发剂聚合可自由基聚合的单体,聚合引发剂包括至少一种选自以下通式(1)代表的硫代-S-羧酸和以下通式(2)代表的二硫代羧酸组成的基团(A),以及至少一种选自以下通式(3)代表的多硫化物、以下通式(4)代表的多硫化物和氧化硫组成的基团(B):
其中 R¹ 代表烃基,该烃基可能具有包括官能团在内的取代基;
其中 R² 代表可具有包括官能团在内的取代基的烃基;
其中 R³ 和 R⁴ 各自代表一个可具有包括官能团在内的取代基的烃基,且 n 为 2 或 2 以上的整数;以及
R⁵- (S)m- R⁶ (4)
其中,R⁵ 和 R⁶ 分别代表具有官能团的烃基,m 为 2 或 2 以上的整数。无论聚合速度或形成的聚合物的聚合度如何,该工艺都能生产出在一端或两端引入官能团的聚合物。