Process for the manufacture of cyclosiloxanes by depolymerizatio

Details Process for the manufacture of cyclosiloxanes by depolymerizatio Process for the manufacture of cyclosiloxanes by depolymerizatio

1996-05-10

1997-09-23

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

556462, 556461, C07F 708

Patent

active

056706898

ABSTRACT:
The present invention relates to a process for the manufacture of cyclic polydiorganosiloxanes, especially octamethylcyclotetrasiloxane (D.sub.4) and decamethylcyclopentasiloxane (D.sub.5) by depolymerization of polydiorganosiloxanes in the presence of an initiator, characterized in that the initiator comprises either:

REFERENCES:
patent: 5282998 (1994-02-01), Horn et al.
patent: 5420325 (1995-05-01), Razzano
patent: 5491249 (1996-02-01), Kostas
Journal of the American Chemical Society, vol. 68, No. 4, Apr. 1946, DC US pp. 667-672.

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