Process for the purification of organopolysiloxanes

Details Process for the purification of organopolysiloxanes Process for the purification of organopolysiloxanes

1992-06-29

1993-09-14

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 708

Patent

active

052450678

ABSTRACT:
A process for purifying organopolysiloxanes, which comprises treating organopolysiloxanes after their preparation with an elemental metal. Impurities which are related to the preparation of organopolysiloxanes and cause changes in color, in particular during storage under the influence of heat, subsequent clouding, inhibition of catalysts, a lack of heat stability, a lack of dielectric strength or the formation of odors, especially after exposure to light, are removed by the process of this invention.

REFERENCES:
patent: 3830780 (1974-08-01), Nitzsche et al.
patent: 4480124 (1984-10-01), Mueller
patent: 4661612 (1987-04-01), George et al.
patent: 4704443 (1987-11-01), Lamont
patent: 4962221 (1990-10-01), Huntress et al.
patent: 5104999 (1992-04-01), Satoh

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