| 摘要 |
<p>The introduction of a branched organopolysiloxane in which polysiloxane with the formula SiO<6> constitutes the branching center or branch origin and the terminal on only one side of diorganopolysiloxane is bonded to the branch origin wherein this bonding is exactly to the branch origin. The branched organopolysiloxane is described by formula (SiO4/2)x(R<1><6>ASiO1/2)y(R<1><7>SiO1/2)z(RO1/2)u, wherein each R<1> is independently selected from a group consisting of C<5> PI 3/4 alkyls, haloalkyls, alkenyls, and aryls; A is described by formula -(OSiR<2>R<3>)n-R4, wherein R<2> and R<3> are independently selected from a group consisting of C<5> PI 3/4 alkyls, haloalkyls, alkenyls, and aryls, R4 is selected from a group consisting of C<5> PI 3/4 alkyls, haloalkyls, alkenyls, hydrogen atom and hydroxyl, and 1 & n & 1,000; R is selected from a group consisting of hydrogen atom and C<5> PI 3/4 alkyls; 2 & x & 500; 0 & z; 0 & u & 15; 2 & y + z + u & 150; 0.3 & (y + z + u)/x & 3.0; z + u > 0; and 0 & u/(y + z + u) & 0.1.</p> |
