Preparation of organically modified polyorganosiloxanes

Details Preparation of organically modified polyorganosiloxanes Preparation of organically modified polyorganosiloxanes

2006-05-30

2006-05-30

Zimmer, Marc (Department: 1712)

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

Synthetic resins

From silicon reactant having at least one...

C528S029000, C528S031000

Reexamination Certificate

active

07053166

ABSTRACT:
The present invention provides a process for reactingA) polyorganosiloxanes which contain —Si(H) units and are of the general formula (I)withB) a mono- or pholyhydric alcohol,which comprises using small amounts of a mixture which consists of at least one acid and at least one salt of an acid as a catalyst.

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J. Boyer et al., “Heterogeneous Catalysis in the Presence of Salts and Without Solvent”, Journal of Organometallic Chemistry, vol. 157, pp. 153-162, 1978.
S. Maifield et al., “Activation of silanes by Grubbs' carbene complex Cl2(Pcy3)2Ru=CHPh: dehydrogenative condensation of alcohols and hydrosilylation of carbonyls”, Tetrahedron Letters, vol. 43, pp. 6363-6366, 2002.
J. Blackwell et al., “B(C6F5)3-Catalyzed Silation of Alcohols: A Mild, General Method for Synthesis of Silyl Ethers”, J. Org. Chem., vol. 64, pp 4887-4892, 1999.

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