Synthesis and properties of star-shaped polymethylphenyl siloxane

Non-traditional Method of Synthesis of Organosilicon Polymers

“…The reaction were carried out in block at 105°C at the presence of initiator-methylsilanolate of potassium under an argon atmosphere, at the molar ratio of original reagents: cis-A, to TMPS-Si/TMPS-Ti = 60: 1. This process can be illustrated by the following scheme [31]: The distinctive feature of the mentioned reaction is that it proceeds with high velocity. An increase of ylSp of the product of CPC occurs in the first 5-10 min of the reaction (the conversion of the cycle reaches -90% in 10 min) and practically entirely finishes after one hour.…”

Multiarm Star-Shaped Polydimethylsiloxanes with a Dendritic Branching Center

“…The anionic polymerization of organocyclosiloxanes, especially in the nonequilibrium variant, makes it possible not only to obtain silicone rubbers, whose production is currently estimated in the hundreds of thousands of tons, but also different macromolecular systems of various designs [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. We dedicate this work to Chojnowski, whose large contribution to this area, including in terms of the synthesis of various multiarm systems, cannot be overestimated [ 11 , 12 , 13 ].…”