Dow Corning Toray Silicone Company Limited

Dow Corning Toray Silicone

Hideyuki Mori

Mitsuo Hamada

Toyohiko Yamadera

Atsushi Komatsu

Makoto Kokubun

Fumitaka Suto

Hidetoshi Kurusu

Tomoo Kinoshita

Norio Matsuda

Norikatsu Higuchi

Junya Yokoi

Koich Ishida

Continuous mixing apparatus provide rapid production of a mixture of high uniformity, low viscosity, low density, high stability after mixing, without an increase in amounts of subsequently supplied liquids. Continuous production of liquid or liquid containing mixtures consists of (i) continuously loading the apparatus casing with materials of different types which are flowable such as different liquids or a powder and a liquid, (ii) mixing the components between independently rotating upper and lower bladed disk turbine impellers to form a coarse mixture, and (iii) mixing the coarse mixture with an additional portion of a liquid being continuously supplied to the casing. The apparatus includes upper and lower bladed disk turbine impellers disposed in a mixing chamber within a casing. The impellers are capable of being rotated independently at different rotational speeds. A plurality of blades are attached to the impellers. Upper and lower ring shaped baffles extend from the inner wall of the casing. A material loading opening is provided in the upper part of the casing and a liquid supply pipe extends through a side wall of the casing. A discharge opening in the bottom of the mixing chamber unloads the mixture.

Continuous mixing apparatus with upper and lower bladed disk impellers and a notched blade

A continous mixing apparatus has an upper rotary disk and a lower rotary disk able to rotate independently of one another. A plurality of scrapers are attached to the upper and lower sides of the upper and lower rotary disks. Scrapers on the lower side of the lower rotary disk have a notch enabling the scrapers to pass over a lower ring plate in the mixer. Material to be mixed is supplied to an upper portion of the mixer, and the product is discharged from a lower portion of the mixer. The device is constructed to enable any subsequently replenished liquids to not rise to the top of the mixing apparatus. The device produces a mixture that is uniform, highly stable, and that has a small particle size or a low viscosity which can be manufactured quickly.

Continuous mixing apparatus with upper and lower disk impellers each having scrapers

Method for the continuous preparation of liquid silicone rubber base

A highly productive method for the continuous production of homogeneous solutions of organopolysiloxane gums is carried out by mixing a solvent and an organopolysiloxane gum. It is characterized by using for mixing, a twin screw compounding extruder which is self-cleaning in which the extruder has at least 2 solvent feed ports downstream from the gum feed port and the internal pressure in the extruder is maintained at a value from 0.00981 to 0.981 MPa during the process.

Method for the continuous production of organopolysiloxane gum solution

Apparatus and process for continuously mixing liquid with powder, where the process uses an apparatus having a feed port for the introduction of liquid and powder on the top of a casing, a discharge outlet at the bottom of the casing, a rotating disk within the casing that divides the interior of the casing into upper and lower mixing compartments, scrapers on the upper surface of the rotating disk, and a rotating scraper positioned below the rotating disk that rotates independent from and without contacting the rotating disk.

Apparatus and process for continuously mixing liquid with powder

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.degree. 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.

Method for the continuous production of room-temperature-curable

A device for continuously mixing liquid and powder is able to provide lower apparent viscosities for liquid-powder mixtures. The device allows introduction of a fresh supply of liquid in a second stage mixing chamber where a rotating disk further creates subdividing effects. This second stage mixing chamber contains scrapers with some having notches which help improve the powder dispersion in the resulting mixture.

Growing community of inventors

Fukui Prefecture, Japan

Hideyuki Mori