Method for making silarylene-siloxane polymers

Details Method for making silarylene-siloxane polymers Method for making silarylene-siloxane polymers

1993-08-02

1996-11-05

Jordan, Charles T.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 35, 528 21, 556433, C08G 7704

Patent

active

H00016128

ABSTRACT:
A method for making silarylene-siloxane polymers having the Formula: ##STR1## where R.sub.1 -R.sub.6 are alkyl or aryl and n is an integer above about , wherein the rate of reaction and the degree of polymerization achieved when reacting disilanols with dichlorosilanes to form silarylene-siloxane polymers are unexpectedly enhanced by a subsequent charge into the reaction medium of a tertiary amine which functions as an acid acceptor.

REFERENCES:
patent: 3325530 (1967-06-01), Wu
patent: 3350350 (1967-10-01), Nitzsche et al.
patent: 3398175 (1968-08-01), Leitheiser
patent: 4340711 (1982-07-01), Evans

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