NEW BLOCK COPOLYMERS AND PREPARATION THEREOF

摘要

The invention relates to a new polysiloxane-based block copolymer having a formula (I): T(AB)xAT wherein A = -(SiR'R''O)nSiR'R''-, wherein R' and R'' are the same or different and represent a lower alkyl group or a phenyl group, wherein said alkyl or phenyl group may be substituted or unsubstituted; B is polyalkylene oxide of formula (a), or (b) and T is (c), or (d) wherein R is hydrogen, lower alkyl, or phenyl; R1 is hydrogen or lower alkyl; y is 2 - 6; m is 3 - 30; n is 5 - 3000; and x is 0 - 100.