C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
400/2005, 400/20
C07F 7/08 (2006.01) C08G 77/46 (2006.01) C08J 9/00 (2006.01)
Patent
CA 1163645
ABSTRACT OF THE DISCLOSURE Polyorganopolysiloxane/polyoxyalkylene block compolymers suitable for use as stabilizers in making soft polyurethane foams, of the formula [R1Si(OSiR2)n mZm-1(OR2)m+2 in which R is an optionally halogen-substituted alkyl group with up to 4 C atoms, R1 is the substituent R or a phenyl radical, R2 is an aliphatic, optionally unsaturated radical with up to 18 C atoms or a group of the formula R3(OCH2CH2)x(OCH2CH )y-, Z is the difunctional unti -O- or Image R3 is a hydrocarbon radical with up to 4C atoms, R4 each independently is a hydrogen atom or R3, n is from 3 to 30, m is from 1 to 15, x is from 0 to 68, y is from 0 to 52, x+y is from 1 to 68, and p is from 2 to 12, Le A 19 411 are produced by reacting an organopolysiloxane of the formula R1Si(OSiR2)n U3-a-bC1aWb in which U is a radical of a lower monobasic carboxylic acid with up to 4 C atoms, W is a radical of a fluorinated alkanesulphonic acid, a ? 1, and b ? o,5, with a mixture of R2OH and H-Z-H, in the presence of a base in an organic solvent, the relative proportion of the reactants being determined by the value of m.
356479
de Montigny Armand
Gonzalez-Doerner Alberto C.
Illger Hans-Walter
Moretto Hans-Heinrich
Fetherstonhaugh & Co.
Ge Bayer Silicones Gmbh & Co. Kg
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