C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 83/05 (2006.01) B29B 7/40 (2006.01) B29B 7/84 (2006.01) C08K 13/02 (2006.01) C08L 83/04 (2006.01)
Patent
CA 2172914
A highly productive, continuous method for the production of room-temperature-curable organopolysiloxane compositions is obtained by continuously feeding 100 parts by weight of a diorganopolysiloxane with a viscosity at 25°C of 0.1 to 500 Pa.s that contains at least 2 silicon- bonded hydroxyl groups or hydrolyzable groups in each molecule; 1 to 30 parts by weight of an organosilane that contains at least 2 silicon- bonded hydrolyzable groups in each molecule, or the partial hydrolysis condensate thereof; 1 to 200 parts by weight of an inorganic filler in powder form, and 0 to 10 parts by weight of a cure-accelerating catalyst into a continuous mixing apparatus having starting material feed openings installed at its top, a discharge opening installed at its bottom, and a rotating disk installed within a casing and are therein mixed by the rotation of the said rotating disk, and in that the resulting mixture is thereafter continuously introduced into a vacuum mechanism- equipped degassing apparatus in which the water fraction present in the said mixture is removed under reduced pressure.
Hamada Mitsuo
Kinoshita Tomoo
Mori Hideyuki
Yokoi Junya
Dow Corning Toray Silicone Company Ltd.
Gowling Lafleur Henderson Llp
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