摘要:
Spherical crosslinked organic particles exhibit a good dispersibility in thermoplastic resins, thermosetting resins, paints, coatings, cosmetics, rubbers, and toners and carriers employed in electrostatic development. Highly efficient methods for preparing these crosslinked organic particles are provided. Suspensions of crosslinked organic particles have excellent handling properties, and are highly blendable with other components. Highly efficient methods for preparing these suspensions are also provided. The spherical crosslinked organic particles have an average particle size of 0.1-500 &mgr;m, and can be prepared by emulsifying in water using an emulsifying agent, a fluid composition containing (A) an organic compound that has at least 2 aliphatically unsaturated bonds in each molecule, (B) a silicon-containing organic compound that has at least 2 silicon-bonded hydrogen atoms in each molecule, (C) an hydrosilylation reaction catalyst, crosslinking the fluid composition by carrying out an hydrosilylation reaction, and thereafter removing water.
摘要:
Certain crosslinked organic particles exhibit a very good affinity for organic oils such as mineral oils and synthetic oils. They also exhibit a suitable affinity for silicone oils. Highly efficient methods for preparing crosslinked organic particles are provided. The crosslinked organic particles in the form of a suspension containing the particles have excellent handling properties, and are highly blendable with other components. Highly efficient methods for preparing such suspensions are also provided.
摘要:
A silicone emulsion contains cross-linked silicone particles in silicone oil drops dispersed in water. A method for the preparation of the emulsion, and a method for the preparation of a silicone composition with cross-linked silicone particles uniformly dispersed in a silicone oil, is also provided.
摘要:
A cosmetic raw material provides uniform dispersions of silicone oils and crosslinked silicone particles in cosmetic products. The cosmetic products consist of the cosmetic raw material combined with other types of cosmetic raw materials. This provides pleasant sensations of touch with the fingers and skin, improved rubbing properties, and sensation in their use. The method of manufacturing the cosmetic products has a high efficiency. The cosmetic raw material is made from a silicone oil emulsion containing crosslinked silicone particles having an average diameter of 0.05-100 &mgr;m which are contained in silicone oil drops having an average diameter of 0.1-500 &mgr;m, the drops in turn being dispersed in water. The diameter of the crosslinked silicone particles is less than the diameter of the silicone oil drops.
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 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:
Antiperspirant/deodorants contain 5-90 wt % of spheroid silicone rubber powders with average particle sizes of 0.1-200 .mu.m and JIS A hardness of the silicone rubber forming said powder is 35-80. They spread well, are smooth, and have a dry feel when used.
摘要:
There is disclosed a silicone rubber powder prepared from a curable silicone composition, said powder comprising a polyorganosiloxane drain having at least one silicon-bonded polyoxyalkylene group of the formula --R.sup.1 (OR.sup.2).sub.m OR.sup.3 wherein R.sup.1 is an alkylene radical, R.sup.2 is an alkylene radical, R.sup.3 is selected from the group consisting of hydrogen and alkyl radicals and m is an integer having a value of 2 to 100. The rubber powder is preferably prepared by curing the above silicone composition to form a cured silicone rubber and then pulverizing the silicone rubber.
摘要:
This invention relates to a silicone oil emulsion that contains cross-linked silicone particles in drops of silicone oil which have an average particle diameter of 0.1 to 500 μm and are dispersed in water, wherein the silicone oil contains epoxy groups, acryl groups, methacryl groups, silicon-bonded alkoxy groups, or silicon-bonded hydroxyl groups but is free of silicon-bonded hydrogen atoms and alkenyl groups, said cross-linked silicone particles is formed by a hydrosilation reaction. Furthermore, this invention also relates to a silicone oil composition obtained by removing water from said emulsion.