Preparation of end-alkoxylated diorganopolysiloxanes

Details Preparation of end-alkoxylated diorganopolysiloxanes Preparation of end-alkoxylated diorganopolysiloxanes

1991-05-02

1994-10-04

Bleutge, John C.

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

Synthetic resins

From silicon reactant having at least one...

528 20, 528 34, 528 39, C08G 7708

Patent

active

053527518

ABSTRACT:
Straight-chain diorganopolysiloxanes having alkoxy endgroups, well adapted for formulation into single-component polysiloxane compositions which are stable on storage in the absence of moisture, but which crosslink into elastomeric state in the presence of moisture, are prepared by reacting a dihydroxydiorganopolysiloxane with a polyalkoxysilane, and advantageously also with an alkanol, in the presence of a catalytically effective amount of sodium hydroxide or potassium hydroxide.

REFERENCES:
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patent: 4374950 (1983-02-01), Shimizu
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patent: 5079324 (1992-01-01), Cocco et al.
patent: 5109093 (1992-04-01), Rees et al.
patent: 5196497 (1993-03-01), Weber et al.
Chemical Abstracts, vol. 90, No. 6, Feb. 1979, p. 27 39644w, Columbus, Ohio, USA & JP-A-78 118 500 (Toray Silicone Co., Ltd.) Oct. 16, 1978.

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