申请人:KANEKA CORPORATION
公开号:EP0845479A2
公开(公告)日:1998-06-03
A method for producing a hydroxyl-terminated (meth) acrylic polymer which comprises converting a halogen atom in a terminal structure of the general formula (1)
-CH2-C(R1)(CO2R2)(X) (1)
wherein R1 is hydrogen or methyl, R2 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 20 carbon atoms or aralkyl containing 7 to 20 carbon atoms, and X is chlorine, bromine or iodine, of a (meth)acrylic polymer obtained by polymerizing a (meth)acrylic monomer using an organic halide or a halogenated sulfonyl compound as an initiator and, as a catalyst, a metal complex with a central metal selected from the elements belonging to the groups 8, 9, 10 and 11 in the periodic table, into a hydroxyl-containing substituent.
The present invention can provide, in an easy and simple manner, a (meth)acrylic polymer which is hydroxyl-terminated at both ends in a high proportion and which has been difficult to produce in the prior art. It can give a cured product with good curing characteristics.
一种生产羟基封端(甲基)丙烯酸聚合物的方法,包括将通式(1)的末端结构中的卤素原子转化为羟基
-CH2-C(R1)(CO2R2)(X) (1)
其中 R1 为氢或甲基,R2 为含 1 至 20 个碳原子的烷基、含 6 至 20 个碳原子的芳基或含 7 至 20 个碳原子的芳烷基,X 为氯、溴或碘,通过使用有机卤化物或卤代磺酰化合物作为引发剂,以及使用中心金属选自元素周期表中第 8、9、10 和 11 族元素的金属络合物作为催化剂,使(甲基)丙烯酸单体聚合而得到的(甲基)丙烯酸聚合物转化为含羟基的取代基。
本发明能以简单易行的方式提供一种(甲基)丙烯酸聚合物,这种聚合物两端羟基封端的比例很高,在现有技术中很难生产。本发明可提供具有良好固化特性的固化产品。