Process for producing polymers or oligomers of controlled molecular weight and end group functionalities
申请人:Commonwealth Scientific & Industrial Resarch Organization
公开号:US06197905B1
公开(公告)日:2001-03-06
A process for the production of polymers by free radical polymerization, characterized in that there is added to the polymerization system one or more compounds of general formula (A), where R1 is a group capable of activating the vinylic carbon towards free radical addition; Y is OR2, where R2 is an optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted saturated or unsaturated carbocyclic or heterocyclic ring; X is an element other than carbon selected from the Groups, IV, V, VI or VII of the Periodic Table or a group consisting of an element selected from the Groups IV, V, or VI to which is attached one or more oxygen atoms; and n is a number from 0 to 3, such that the valency of the group X is satisfied and, when n is greater than 1, the groups represented by R2 are identical or different.
一种通过自由基聚合生产聚合物的工艺,其特征在于向聚合体系中添加一个或多个通式(A)的化合物,其中R1是一个能够激活乙烯基碳原子向自由基加成的基团;Y为OR2,其中R2为可选择的取代基的烷基、烯基、炔基、或可选择的取代的饱和或不饱和碳环或杂环;X为周期表IV、V、VI或VII族中除碳以外的元素,或由周期表IV、V或VI族中的一个元素和一个或多个氧原子组成的基团;n为0到3的数字,使得X基团的价被满足,并且当n大于1时,由R2表示的基团是相同的或不同的。