摘要:
A highly productive process for preparing cured silicone powder having a uniform particle size, in which a platinum-alkenylsilozane complex catalyst is added to a water-based dispersion of a silicone composition. The silicone composition is (i) an organopolysiloxane having at least two silicon-bonded alkenyl groups in each molecule, and (ii) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in each molecule. The catalyst is added and dispersed in the form of liquid particles with an average particle size in volumetric particle size distribution in water of no more than one micron.
摘要:
The object of the present invention is to provide �a! a cosmetic raw material which allows the uniform dispersion of a powdered silicone rubber in a cosmetic, �b! a cosmetic �i! which consists of the abovementioned cosmetic raw material and other cosmetic raw materials, �ii! which contains a uniformly dispersed powdered silicone rubber, and �iii! which has a good feeling on the fingers and skin, good spreading characteristics and a good feeling during use, and �c! a method for manufacturing such a cosmetic with good efficiency.The present invention provides �a! a cosmetic raw material which is characterized by the fact that said material consists of an aqueous suspension of a powdered silicone rubber with a mean particle size of 0.1 to 500 microns, �b! a cosmetic which is characterized by the fact that said cosmetic consists of the abovementioned cosmetic material and other cosmetic materials, and �c! a cosmetic manufacturing method which is characterized by the fact that the abovementioned cosmetic raw material is mixed with other cosmetic raw materials.
摘要:
A catalyst enables hydrosilylation of aliphatically unsaturated carbon-carbon bonds by silicon-bonded hydrogen to be conducted rapidly in water. The catalyst provides a rapid method of carrying out hydrosilylation in water. An emulsion form of catalyst includes a dispersion in water of liquid catalyst, the main component of which is a platinum and alkenylsiloxane complex. The volumetric average particle size of liquid catalyst dispersed is less than or equal to 1 .mu.m. Hydrosilylation of an aliphatically unsaturated carbon-carbon bond by silicon-bonded hydrogen is carried out in water using the catalyst.
摘要:
A cured silicone powder inhibited from evolving unpleasant odors with the passage of time, and an efficient method for preparation of the cured silicone powder, in which the surface of the cured silicone powder is treated with an alkali, by dipping the cured silicone powder in an aqueous alkaline solution.
摘要:
Disclosed is a conveyer device using a plurality of motor-incorporated rollers. The conveyer device related to the invention provides advantageous structure in that motor-incorporated rollers are highly interchangeable and practically usable with very high supply voltages. Each pair of the motor-incorporated rollers for composing the conveyer device are connected in series to each other. Each motor built in the motor-incorporated roller is based on star connection as per 200 VAC of rated voltage. Interphase impedance of each motor built in the roller is 700 .OMEGA. against supply power. The conveyer device itself uses 400 VAC of power source.
摘要:
Disclosed are DNA sequences which are useful for the synthesis of carotenoids such as lycopene, .beta.-carotene, zeaxanthin or zeaxanthin-diglucoside, that is, DNA sequences encoding carotenoid biosynthesis enzymes. These DNA sequences are the sequences 1-6 shown in the specification.Also disclosed is a process for producing a carotenoid or a carotenoid related compound which is selected from the group consisting of geranylgeranyl pyrophosphate, phytoene, lycopene, .beta.-carotene, zeaxanthin and zeaxanthin-diglucoside, which comprises transforming a host with at least one of the DNA sequences 1-6 described above and culturing the transformant.
摘要:
A vortex flow blower used as an air source to be incorporated into general industrial machines. The vortex flow blower is characterized in that the shape of the blade in its impeller is three dimensionally formed such that at least the inner portion of the blade can be adapted to the three dimensional internal flow. According to the present invention, the aerodynamic performance can be significantly improved and the size of a vortex flow blower can be reduced. Furthermore, an impeller having three dimensionally shaped blades is manufactured by independently manufacturing the shroud and the blades and coupling them, so that the impeller of a complicated shape can be readily manufactured. Furthermore, since the blade can be made of a thin and light material, the secondary moment of inertia of the impeller can be reduced.
摘要:
The present invention relates to a metal-air cell having a piezo-electric pump. The piezo-electric pump has a characteristic of moderate change of air flow speed relative to the pressure. Accordingly, the air supply speed can be controlled easily. This characteristic enables small and simple construction of the metal-air cell with the maximum electrical energy being obtained from the cell.
摘要:
A method for the preparation of an organopolysiloxane comprising polymerizing at least one organosiloxane in the presence of a strong acid catalyst, and subsequently neutralizing said catalyst by the addition of a neutralizing agent, is disclosed wherein the neutralizing agent is ammonia gas. The invention leads to a substantial abbreviation in the neutralization time and, because it affords a nearly complete neutralization of the acid catalyst, the method provides an organopolysiloxane which has excellent heat resistance.
摘要:
A radio telephone apparatus including a base unit connected to a wire line and a radio telephone unit connected to the base unit via a radio communication link. The apparatus has an instantaneous conversation function for establishing a conversation state by detecting that the radio telephone unit has been lifted up in a standby state, and also has a talk commencing/terminating key allowing a command for commencing a conversation and a command for terminating the conversation to be inputted alternately. A time guard controlling circuit is also provided for invalidating an input operation of the talk commencing/terminating key if the talk commencing/terminating key is operated during a preset time. Simultaneously as the conversation state is established by lifting the radio telephone unit in the standby state, the preset timer is started, and even if the talk commencing/terminating key is pressed during the preset time of the timer, the input operation is invalidated and the conversation state is maintained.