Method for the preparation of a silicone resin

Details Method for the preparation of a silicone resin Method for the preparation of a silicone resin

1993-11-23

1994-08-16

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 21, 528 23, 528 31, 528 34, C08G 7706

Patent

active

053388178

ABSTRACT:
Disclosed is a method for the preparation of high molecular-weight silicone resins that have excellent storage stability in solution form. The method comprises the hydrolysis and condensation of a disiloxane and an alkyl silicate in an aqueous solution which contains at least 30 weight % alcohol and at least 5 weight % inorganic acid followed by isolation of the resin with an organic solvent which is poorly soluble in water and which has a dielectric constant of at least 4.

REFERENCES:
patent: 2857356 (1958-10-01), Goodwin
patent: 4707531 (1987-11-01), Shirahata

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