C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 7/10 (2006.01) C08G 77/20 (2006.01) C08G 77/26 (2006.01) C08K 5/54 (2006.01) C09C 1/40 (2006.01) C09C 3/12 (2006.01)
Patent
CA 2270007
The present invention discloses a stable aqueous composition of a water-soluble organosiloxane which has a pH of from 2 to 6 and is obtainable by: a) reacting a water-soluble amino-functional alkoxysilane and a water-insoluble alkenyl-functional alkoxysilane with water, to form a reaction mixture containing the water-soluble organosiloxane and a liberated alcohol, and b) removing the liberated alcohol from the reaction mixture, wherein the amino-functional alkoxysilane and the water are used in the reaction in such amounts that all of the alkoxy groups of the water-insoluble alkenyl-functional silane are reacted and that when the resulting composition is diluted with water, essentially no alcohol is liberated by hydrolysis, and wherein an acid is added during or after the reaction so that the resulting composition has a pH of from 2 to 6. The composition is useful for silanizing surfaces of substances such as fillers and pigments.
Barfurth Dieter
Edelmann Roland
Frings Albert-Johannes
Horn Michael
Jenkner Peter
Degussa Ag
Fetherstonhaugh & Co.
Huls Aktiengesellschaft
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