C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
400/106, 400/200
C07F 7/10 (2006.01) C08G 18/42 (2006.01) C08G 77/46 (2006.01) C08J 9/00 (2006.01) C08K 5/00 (2006.01) C08L 83/12 (2006.01)
Patent
CA 1077511
ABSTRACT OF THE DISCLOSURE Organosilicone compositions are provided which comprise polysiloxane-polyoxyalklene copolymers contain- ing monofunctional siloxy units and difunctional siloxy units, an average of between about 2 and about 20 silicon- bonded cyano-bearing ether groups for every two moles of monofunctional units, said cyano-bearing ether groups having the formula, -(O)qR'OR"CN, 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 for every two moles of mono- functional units, at least 75 weight percents of the polyoxy- alkylene content of said copolymers being constituted of oxyethylene units, said monofunctional units having at least two alkyls bonded to the respective silicon atoms thereof and the difunctional units having at least one alkyl bonded to the respective silicon atoms thereof, the remain- ing organic group bonded to silicon of the respective mono- cyano-bearing ether group or said polyoxyalkylene block. The polymers of the invention are effective stabilizers of flexible polyester polyol-based polyurethane foam and offer particular advantage in the formation of flame-retarded foam. 1.
241793
Kanner Bernard
Prokai Bela
Kanner Bernard
Prokai Bela
Union Carbide Corporation
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