Base-catalyzed equilibrations oligomers

Polydimethylsiloxane Oligomers Synthesized by a Base Catalyzed Equilibration Process,... 

Base catalyzed equilibrations of hydroxyl terminated siloxane oligomers can also be achieved, however these systems can sometimes be complicated by the attack of base to the (OH) end groups to form [(CH2)x 0- X+] type species, which may also cleave the siloxane bonds. This generally results in the loss of terminal functionality in the oligomers produced, which is of course not desirable. 

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