Study,the,boron-containing,sur business, insurance Study of the boron-containing surface active agent
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This kind of product is non-toxic, non-corrosive, high boilingpoint, a flame retardant, bactericidal; can be used as gas desiccant,lubricating oils, the additives of the working medium of the compressor; alsocan be used as a polyvinyl chloride, polyethylene, polyethylene methacrylate anantistatic agent, fogging agent dripproof, dispersing agents and emulsifiers ofvarious substances. Therefore, boron surfactant has a broad applicationprospects.Researches by metal powder supplier, covalency of boronatoms and the characteristics of the number of valence electrons less than thenumber of valence orbit determine the boron atom is an electron-deficient atoms,characteristics of forming compounds bonding can be summarized as covalent,electron-deficient and polyhedralhabits. Based on electrically negative of boron-oxygenbond and boron, boron is a pro-oxygen element, capable of forming a number ofthe B-O bond-containing compounds, including the B-O bond and an organic groupconnected to the very wide range of organic boron compound, this is one of themost characteristics of boron forming compound when bonding. The compound usedfor synthetizing boron specialty surfactants is generally boric acid, the structuralunit is a planar triangle, each boron atom is sp2 hybridized with the oxygenatoms binding, boron is still the electron deficient atoms, easily react with thehydroxyl groups in organic compound, the boric acid ester is formed bydehydrating. According to both the molar ratio and the different types ofhydroxy compounds may be formed to the boric acid monoester, diester, triester,and the four-coordinated boron spiro structure.Synthetic boron-based surface active agent, generally usepolyhydroxy compound, such as glycerol react with boric acid to generate boricacid ester, intermediate: monoglycerides ester (MGB), iminodiacetic acid ester(DGB). These intermediates with the reactive groups (hydroxyl), can react withfatty acid, a fatty acid chloride, ethylene oxide, epichlorohydrin and othermaterial and the reaction of the corresponding surfactant. Such surface activeagents is a boron-based surfactant studied more classes, it mainly includes themonoglycerides and diacylglycerol. Which is more researches about diacylgycerol,this is because the iminodiacetic ester structure containing a semi-polar bond,in solution ionization can form a boron volution structure, so that the boronatom has a negative charge and the structure is stable than monoglycerides.This surface active agents is the most in-depth studyin the boron-containing surface active agent, having a good surface activity,emulsification and dispersion properties, can be used as emulsifying agents,dispersing agents, lubricating oil additives and metal cutting fluidlubrication agent, anti-rust agents and so on. In addition, it is alsodeveloped a new kind of surface active agent of boron - phosphorous-containingsurfactant in recent years. This surface active agent devide into twocategories of oil-soluble and water-soluble. And this surfactants havingexcellent flame retardant properties, the flame-retardant effect is superior thanboron surfactants, phosphorus-surfactant, which is due to is a synergisticeffect of boron flame retardancy and phosphorus, chlorine. In addition, thereare good emulsifying and dispersing properties. Mainly used as flameretardants, are widely used in various areas of industrial production.Source:http://www.mhcmp.com Article Tags: Boron-containing Surface Active, Surface Active Agent, Boron-containing Surface, Surface Active, Active Agent, Boron Atom, Boric Acid, Acid Ester
Study,the,boron-containing,sur