Liu Shu-fen, Li Ping. EMULSION POLYMERIZATION OF OCTAMETHYLCYCLO-TETRASILOXANE IN THE PRESENCE OF A CATIONIC EMULSIFER[J]. Acta Polymerica Sinica, 1981,(4):257-262.
Liu Shu-fen, Li Ping. EMULSION POLYMERIZATION OF OCTAMETHYLCYCLO-TETRASILOXANE IN THE PRESENCE OF A CATIONIC EMULSIFER[J]. Acta Polymerica Sinica, 1981,(4):257-262.DOI:
The emulsion polymerization of octamethylcyclotetrasiloxane in the presence of do-decyldimethylbenzyl ammonium halide and various alkalies were studied. The polymerization proceeds in two steps
the openning of D4 with formation of OH-ended poly-dimethylsiloxanes and the condensation of the latter. At the end of the reactions equilibriums are established between OH-ended-polydimethylsioxanes of various molecular weights
and also between OH-ended polysiloxanes and cyclosiloxanes. In equilibrium the OH-ended polysiloxanes amouts to about 87%.