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QSAR -- 2017-11-29

The chemical structure of siloxaneThe step of building the chemical structureof the siloxane is the process of determining the length of the polymer chain,branching, and insertion of the organic group. From the point of view of itschemical structure, the structural groups entering the molecule are representedby the letters M (monofunctional), D (difunctional), T (trifunctional) and Q(tetrafunctional). The M functional groups are chain terminating because theyare monofunctional; the D functional ...

Build accurate molecular structure -- 2017-11-28

Silicone technologySiloxane compounds were well known in the1960s, but it was not until the 1940s that Dr. Eugene RoChow pioneered the workof commercializing such important compounds. The chemical nature of siloxanesallows polymer chemists to build accurate molecular structures using idealnanotechnology. The siloxane polymer is derived from silica (Si02), whichaccounts for 25% of the total crust. In the presence of a carbon source, thesilica is converted to a siloxane at elevated temperatures. T ...

Mixed for use as a cream-type matrix -- 2017-11-27

Physical and chemical propertiesPolydimethylsiloxane chemical stateDimethyl silicone oil, colorless or light yellow liquid, odorless, hightransparency, with heat resistance, cold resistance, viscosity with temperaturechange is small, waterproof, surface tension is small, with thermalconductivity, thermal conductivity of 0.134-0.159W / M * K, light transmittanceof 100%, dimethyl Silicone oil non-toxic and tasteless, with physiologicalinertia, good chemical stability. Electrical insulation and wea ...

Silicone polymers exist in a variety of different forms -- 2017-11-24

The role of polysiloxaneThere are few silicone-free compounds inthe new cosmetic formulations, and the use of silicone compounds in personalcare products has achieved significant growth. In addition, even with the mostadvanced technology of the formulator, still inevitably use siloxane.Silicone polymers consist of differenttypes of compounds, including conventional silicone oils, water-solublepolymers, oil-soluble polymers, fluorine-soluble polymers, and polymers withvarious solubility. They exi ...

Derivative reaction -- 2017-11-23

Derivatization of polysiloxanesThe final action to be considered is thederivatizing reaction. In this step, the reaction group added to the functionalaction step is further reacted to give a new compound, and the reaction of thehydroxyl group with the polydimethylsiloxane copolymer polyol is an example ofsuch a reaction. In fact, a series of surface-active siloxanes, comparable to alarge number of standard surfactants, have been developed and marketed.Silicone esters are an excellent example of ...

Reduce the surface tension of the coating to eliminate surface tension differences -- 2017-11-22

Leveling agent principleSurface tension is the main driving forceof coating leveling, but the surface tension difference, but it is the maincause of surface defects. To improve the surface tension of the coating toachieve the surface tension balance, which is the flow of the coating andleveling is very useful, but it can’t. So people had no choice but to reducethe surface tension of the coating to eliminate surface tension difference,control the surface state of the coating to eliminate surface ...

Powder solid defoamer -- 2017-11-21

Powder solid defoamer usePowder solid defoamer can be used for metalcleaning agents, electroplating cleaning agents, alkaline degreasing agents,high-grade spray, metal wire drawing fluid, flux, ultrasonic cleaning agent,alkaline degreasing agent, washing detergent bowl, beer bottle cleaning agents,powder cleaning agents, chemical cleaning agents, cutting fluid, industrialcleaning agents, civilian detergents, powdered detergent, powder detergent,electrolysis water treatment, starch, paper / pulp, ...

Compounding is one of the development trend of defoamer -- 2017-11-16

Development of defoamersRecently, researches on defoamers havefocused on the compound of organosilicon compounds and surfactants, thecompound of polyether and organosilicon, the combination of water-soluble oroil-soluble polyether and silicon-containing polyether, etc. Agent, thecompound is one of the development trend of defoamer. At present defoamers,polyether and silicone defoamer performance is the most excellent, these twotypes of defoamer modification and the development of new varieties o ...

Reduce surface tension -- 2017-11-15

Polysiloxane type defoamerPolysiloxane defoamer with defoamingrapidly, anti-foam for a long time and safe non-toxic and so on. But it isinsoluble in water, high temperature, alkali resistance is poor, polyetherdefoamer high temperature, strong alkali resistance, but its defoaming speedand suppression bubble time are not ideal The polyether chain is grafted intothe polysiloxane chain through the condensation technology, which has theadvantage of the second kind of antifoaming agent, and becomes a ...

Two chemically different groups -- 2017-11-14

Molecular structure of coupling agentCoupling agent is an important, widely usedin the field of treatment agent, mainly for polymer composites additives. Themost important characteristic of the molecular structure of the coupling agentis that the molecule contains two groups with different chemical properties.One is a group of pro-inorganic, easily with the inorganic surface of thechemical reaction; the other is the pro-organic groups, and synthetic resin orother polymer chemical reaction or hyd ...

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