Alkoxysiloxanols

Details Alkoxysiloxanols Alkoxysiloxanols

1974-10-24

1977-05-10

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 37SB, C07F 718

Patent

active

RE0292117

ABSTRACT:
Alpha-alkoxy-omega-siloxanols, R'O(R.sub.2 SiO).sub.x H, are produced by contacting cyclic siloxanes with alcohols under mild conditions. For example, hexamethylcyclotrisiloxane heated at reflux in methanol for four hours gives 5-methoxyhexamethyltrisiloxan-1-ol in high yield. The reaction proceeds more rapidly in the presence of weak acids [or bases]. The products are useful as antistructure agents, coupling agents, and filler-treating agents for silicone elastomers.

REFERENCES:
patent: 2746982 (1956-05-01), Hyde
patent: 2826599 (1958-03-01), Meals
patent: 2842522 (1958-07-01), Frye
patent: 3146251 (1964-08-01), Brown et al.
patent: 3296198 (1967-01-01), Lukes
patent: 3541126 (1970-11-01), Baronnier et al.

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