C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1305, 400/53
C08L 83/04 (2006.01) B29C 33/64 (2006.01) C08K 9/06 (2006.01)
Patent
CA 1087336
ABSTRACT OF THE DISCLOSURE Aqueous diorganopolysiloxane emulsions are provided herein con- taining dispersed inorganic silicates (e.g., mica) which have been treated with an organosilicon compound to impart hydrophobic properties thereto. The organosilicon compound is one which is selected from the class con- sisting of octamethylcyclotetrasiloxane, hydroxyl-terminated dimethyl- polysiloxanes having from 2 to 12 siloxane units per molecule and silicon compounds having the formula (R3Si)aZ and Ra'SiZ'4-a' in which R is selected from the group consisting of monovalent hydrocarbon radicals, Z and Z' are radicals selected from the class consisting of halogen , hydrogen, -OH, O?', -NR'X, -ONR', -SR', -OOCR', and when a is 2, then Z is also reflected from the class consisting of -O-, =NX and -S-, R' is selected from the class consisting of a hydrocarbon radical and a substituted hydrocarbon radical, X is selected from the class consisting of hydrogen and R', a is 1 or 2, and a' is 1, 2 or 3. The resultant dis- persions may be employed as release agents, especially in molding tires.
286804
Huber Peter
Meusel Jurgen
Marcus & Associates
Wacker-Chemie Gmbh
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