Preparation of branched oligoorganosiloxanes with alkoxyoxyalkylene groups in the lateral chain

Preparation of branched oligoorganosiloxanes with alkoxyoxyalkylene groups in the lateral chain 

Oligoorganosiloxanes with alkoxyoxyalkylene fragments in their branches have recently been widely used as surface active agents, which regulate foam forming and foam stabilising in the production of various foamed polyurethanes. 

Preparation of tris a -butoxyoligo[(propyleneoxy)(ethyleneoxy)-(dimethylsiloxy)] ethylsilane 

The first stage is the anion polymerisation of dimethylcyclosiloxanes with ethyltriethoxysilane  

---