C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
403/30, 260/442.
C07F 7/10 (2006.01) C08G 77/26 (2006.01) C08G 77/388 (2006.01) C08G 77/46 (2006.01) C08J 9/00 (2006.01)
Patent
CA 1075256
ABSTRACT OF THE DISCLOSURE Organosilicone compositions are provided which comprise polysilioxane-polyoxyalkylene copolymers contain- ing monofunctional siloxy unite (Mo) and, for every two moles of Mo, an average of between about 10 and about 200 difunctional dialkylsiloxy units, an average of between about 2 and about 100 silicon-bonded cyano-bearing ether groups (Q) having the formula, -(O)qR'OR"C?, wherein q is zero or one, R' is bivalent alkylene of 3 to 8 carbon atoms and R" is bivalent alkylene of 2 to 4 carbon atoms, and an average of between about 2 and about 30 silicon-bonded, organic-capped polyoxyalkylene blocks (E), the polyoxy- alkylene content of said copolymers being constituted of between about 20 and about 65 weight percent of oxyethylene units, said Mo units having at least two alkyls bonded to the respective silicon atoms thereof, the remaining organic group of Mo being alkyl, Q or E, said copolymers also con- taining difunctional monoalkylsiloxy units the remaining organic group bonded to the respective silicon atoms thereof being Q or E. The polymers of the invention are effective stabilizers of flexible polyether polyol-based polyurethane foam and offer particular advantage in the formation of flame-retarded foam. 1.
241795
Kanner Bernard
Prokai Bela
Na
Union Carbide Corporation
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