Monofunctional branched polysiloxanes, compositions and processes of preparing the same

摘要

Branched monofunctional polysiloxanes are disclosed having the general formula: X-(Da)-(DbTc), wherein X-(Da) is a linear moiety and (DbTc) is a branched moiety; X a substituted or unsubstituted, monovalent or divalent hydrocarbon having a functional group; Dis R<5> and R<6> are independently halogenated or unhalogenated monovalent hydrocarbon or substituted or unsubstituted divalent hydrocarbon; T is (R<7>)dSiO(4-d)/2 R<7> is a substituted or unsubstituted monovalent hydrocarbon; wherein the branched polysiloxane is end-capped by R<8> is a substituted or unsubstituted monovalent hydrocarbon; a is 1 to 300, b is 25 to 5000, c is 1 to 100, d is 0 or 1; and Tc is randomly distributed in the branched polysiloxane. Additionally, processes for preparing such polysiloxanes, and coating compositions comprising the same is provided. A fuser member and substrate comprising a branched monofunctional polysiloxane of the above formula are also disclosed.