Ferrosiloxane thermal stabilizers for diorganopolysiloxanes
AssigneeUnion Carbide Corporation
InventorsGail D. DiSalvo, James D. Reedy
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Abstract
Ferrosiloxane compounds prepared by reacting iron carboxylates and N,N-disubstituted silylamines are useful as thermal stabilizers for diorganopolysiloxanes. The thermally stable diorganopolysiloxanes find utility as heat transfer fluids, high temperature lubricants, hydraulic fluids and electric insulating fluids, to name but a few.
Claims7
A ferrosiloxane compound of the formula:
- Fe.sup.+n (OSiRR'R").sub.x (OCOR"').sub.n-x
- wherein n has a value of 2 or 3;
- x has a value of 1 to 3 inclusive;
- R, R', R" and R"' are individually are alkyl, alkaryl, alkenyl, alkynyl, aryl, cycloalkyl, heteroatom substituted alkyl, cycloalkyl or aryl group having from 1 to 25 carbon atoms;
- R' could also be hydrogen or a siloxy group and wherein R" could also be a siloxy or substituted siloxy group.
A process for stabilizing diorganopolysiloxanes from heat by adding an effective amount of a ferrosiloxane compound of the formula:
- Fe.sup.+n (OSiRR'R").sub.x (OCOR"').sub.n-x.
A process for stabilizing diorganopolysiloxane from heat which comprises adding an effective amount of an iron carboxylate and an effective amount of a N,N-disubstituted silylamine.
Dependencies are inferred from the claim text.