Process for the preparation of heat-curable silicone

Details Process for the preparation of heat-curable silicone Process for the preparation of heat-curable silicone

1987-05-13

1988-06-07

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 17, 528 23, 528 29, 528 43, 525474, C08G 7706

Patent

active

047497645

ABSTRACT:
A method for preparing heat-curable silicone resins by reacting siloxanes with low molecular, multifunctional alcohol and removing the alcohol from the reaction mixture such that each siloxane group corresponds to approximately one alcohol group and terminating the reaction at a degree of conversion of 25% to 80% by cooling the reaction mixture to a temperature of less than 100.degree. C. The silicone resins prepared according to this process have excellent storage stability in the uncured state, a high rate of curing and excellent pigment compatibility and the cured resins possess high thermal stability with good elasticity and good adhesion to metallic substrates.

REFERENCES:
patent: 2842521 (1958-07-01), Nitzsche et al.
patent: 2885384 (1959-05-01), Sterman
patent: 3480583 (1969-11-01), Bailey et al.
patent: 3668272 (1972-06-01), Sekmakas
patent: 3725339 (1973-04-01), Koerner et al.
patent: 4408031 (1983-10-01), Holtschmidt et al.

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