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 ...

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 ...

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 ...

Some of the main functions of the couplingagentGlass fiber reinforced plastic: Improve thephysical and mechanical strength of the composite wet, wet electricalperformance, and improve the glass fiber cluster, protection and processingtechnology.Adhesives and coatings: Improve the wetadhesion, weatherability, improve pigment dispersion, improve wear resistanceand resin crosslinking.Casting: Improve the strength of resinsand. To achieve a high degree of low gas evolution.Rubber: Improve product me ...

Coupling agent is very common in our liveschemical raw materials. In plastic compounding, the coupling agent is toimprove the synthetic resin and inorganic filler or reinforcing materialinterface properties of a plastic additive, coupling agent, also known assurface modifier. It can reduce the viscosity of synthetic resin melt in theplastic processing, improve the dispersion of filler to improve the processingperformance, thus enabling the products to obtain good surface quality andmechanical, t ...

Silane coupling agent is a kindof special structure of low molecular weight organic silicon compounds. The general formula for RSiX3, where R representsamino, mercapto vinyl, epoxy, chloropropyl, cyano and methacryloxy groups andother groups. These groups and different matrixresins have a strong ability to react, and x represents a hydrolyzable groupsuch as halogen, alkoxy, acyloxy and the like. Silane couplingagent is trichlorosilane (HSiCl3) and with reactive groups of unsaturatedolefins in th ...

Agricultural Silicone surfactants used inpesticideAs a spray conditionerVan Valkenburg had to pesticide chemicalsare divided into two categories: Spray improvers and activators. In general,the silicone surfactants are mainly belong spray modifier. Because of theirvery strong activity, sometimes used as an activator. Using a siliconesurfactant can increase the capacity of spray liquid is absorbed through leafstomata, Thus it is necessary to spray in their characteristics were studied.As a foliar ...

A typical example of such an organosilicon compound is a polyether-modified silicone oil composed of a polydimethylsiloxane as a hydrophobe, a polyether of polyoxyethylene and polyoxypropylene as a hydrophilic group. Its greatest feature is that it has excellent surface activity both in organic and in water. In silicone-based personal care products, it is particularly suitable as an emulsifier, you can get a very stable emulsion. Even adding 75% water, can get a stable system. It also reduces th ...

Silicone used in personal care products is the first time in the United States Dow Corning produced in 1950, "Revollns Silicone" hand cream, after 50 years of efforts, the use of silicone in personal care products have almost universal access to all products and access Extensive market.1. Skin care products: cream, milk, sunscreen products, facial cleanser, hand sanitizer and bath, acne medicine and wetting agent.2. In the shower gel: soap, all kinds of shower gel and so on.3. In the h ...

Polyether modified, amino modified silicone oil has been widely used in personal care products. The polyether-modified silicone oil containing polyoxyethylene or polyoxypropylene is obtained from a lipophilic oil-soluble lipophilic compound to a water-soluble hydrophilic compound depending on the content of the polyoxyethylene group. Polyether modified silicone oil dosage of 0.1% to 1.0% will make the skin care fluid with lubricity and wetting. With 0.1% ~ 0.5% water-soluble polyether modified s ...