Syntheses of epoxysilicones

Details Syntheses of epoxysilicones Syntheses of epoxysilicones

1992-05-18

1993-11-02

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 27, 556479, 525476, C08G 7706

Patent

active

052584801

ABSTRACT:
The invention provides a process for producing epoxy-functional silicones by a rhodium metal complex-catalyzed hydrosilation reaction between an SiH-containing silane or siloxane and an olefin epoxide, in the presence of a tertiary amine stabilizer. In practicing the invention, RhCl.sub.3 [(CH.sub.3 (CH.sub.2).sub.3).sub.2 S].sub.3 or PtCl.sub.2 [(CH.sub.3 CH.sub.2).sub.2 S].sub.2 are suitable hydrosilation catalysts and methyldicocoamine, CH.sub.3 (C.sub.18 H.sub.37).sub.2 N, is a suitable stabilizer. The invention also provides for a composition including an SiH-functional silane or siloxane, and a tertiary amine, where the composition is not susceptible to gelation during a hydrosilation addition reaction. The invention further provides a method for stabilizing epoxysilicones both during and after the hydrosilation addition reaction used in their production.

REFERENCES:
patent: 3928629 (1975-12-01), Chandra et al.
patent: 4279717 (1981-07-01), Eckberg et al.
patent: 4421904 (1983-12-01), Eckberg et al.
patent: 4946818 (1990-08-01), Lewis
patent: 5158991 (1992-10-01), Riding
J. L. Speier, "Homogeneous Catalysis of Hydrosilation By Transition Metals", Advances in Organometallic Chemistry, vol. 17, 407-447, F. G. A. Stone & R. West, eds., Academic Press, 1979.

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