METHOD FOR CONTINUOUS PRODUCTION OF DIORGANOPOLYSILOXANE HAVING MOLECULAR CHAIN END BLOCKED WITH ALKOXY GROUP

摘要

PROBLEM TO BE SOLVED: To provide a method capable of promptly producing a large amount of a diorganopolysiloxane having molecular chain ends blocked with alkoxy groups, using a small-size reactor. SOLUTION: In a method for producing the diorganopolysiloxane having molecular chain ends blocked with alkoxy groups by dealcohol condensation of (A) a diorganopolysiloxane having molecular chain ends blocked with silanol groups and (B) a tetraalkoxysilane or an organotrialkoxysilane, this continuous production method for the same is characterized by carrying out continuously the condensation in the presence of (C) an acidic catalyst and also in a tubular reactor having no dynamically mixing function. COPYRIGHT: (C)2003,JPO