Organic amine is a kind oforganic compound, generally refers to the occurrence of organic substances and ammoniachemical reactionThe organic substances generated are divided intoAliphatic amineClass A, alcohol amineamideThere are seven categories of amines, alicyclic amines, aromatic amines, naphthalene amines, and other amines.
Chinese name
Organic amine
Foreign name
Organic amine
Interpretation
Chemical reaction between organic substances and ammonia
Organic amine isOrganic pigmentOfSurface treatment agentClass of.It is mainly based on the strong affinity of amines to the surface of pigmentschemical adsorptionThe force is firmly adsorbed on the surface of the pigment particles, where the polar end of the molecule (-NH2）Directly adhere to the particle surface, andHydrocarbonThe key extends directionally into the medium, so as to reduce theinterfacial tension, improve particle'sWettability。Generally, soluble organic amine salt orFree amineOfEmulsionAdd to PaintSuspensionIn addition, calcium is added to change amine salt into insoluble free amine.Amines suitable for handling organic pigments, such asStearinAmine, N-octadecylidenePropyl groupDiamineAnd N-cyclohexanePropylidene diamine, etc.
Industrial applications
Announce
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In the late 1990s, the global organic aminethroughputIt has reached 320000 tons,Annual average growth rateUp to 10%.In this century, the speed has slowed down slightly, but it is still developing at a rate of 5%.AsiaEspecially in China, 20% - 30%average velocityrapid growth.By the end of 2007, the global production capacity of organic amines had reached 500000 tons.
The organic amines in China were industrialized in the 1960s, whenProduction processHigh temperature and high pressure method is mainly adopted, and the production scale is basically 100-500 tons.ThisRoutingIs characterized by:Conversion rateLow,side reactionSerious, high raw material consumption, high energy consumption,product qualityPoor quality, which has seriously affected the development of downstream industries. Based on this, Zhejiang Jianye Company developed a world-classLow pressure methodAnd has realized large-scale industrial production of 3000t/a.
In industry, the steam and ammonia of alcohol are heated to 300~500 through the catalyst under the pressure of 0.8~3.5Mpa（alumina、silicon dioxide）To obtain amine, the product isPrimary amine、Secondary amineandTertiary amineAfter a certain amine is separated from the mixture, the residue continues to circulate with the raw material.
