Siloxane iniferter compounds, block copolymers made therewith and a method of making the block copolymers

摘要

The present invention provides novel siloxane iniferter compounds, block copolymers made therewith, and a method of making the block copolymers. The siloxane iniferter compounds can be represented by the formula <IMAGE> wherein T and X are organic groups selected so that the T-X bond is capable of dissociating upon being subjected to an appropriate energy source to form a terminator free radical of the formula Tx and an initiator free radical; R1, R2, R5 and R6 are monovalent moieties selected from the group consisting of hydrogen, C1-4 alkyl, C1-4 alkoxy and aryl which can be the same or are different; R3 and R4 are monovalent moieties which can be the same or different selected from the group consisting of hydrogen, C1-4 alkyl, C1-4 fluoroalkyl including at least one fluorine atom and aryl; Y is selected from the group consisting of -X-T and -Z wherein X and T are defined above and Z is an organic moiety that will not dissociate to form free radicals when subjected to said energy source; and m is an integer of at least 10.