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The company is a professional company that provides products and services such as Changzhou triethylenediamine, piperazine hexahydrate, and other dangerous categories. Do you know the function of triethylenediamine? This article will give you a specific introduction on this aspect. , Let us take a look at "a brief introduction to the role of triethylene diamine, do you know the application of triethylene diamine"

Triethylenediamine is a pesticide production initiator, a non-cyanide electroplating additive. It is also a polyurethane foam hardener, and it is still an epoxy resin curing polymerization catalyst, ethylene polymerization catalyst, epoxide catalyst, etc.

A non-yellowing solid amine, abbreviated as TED. Anhydrous triethylenediamine is a flammable crystal, which is easy to deliquesce and rises at room temperature. Melting point is 158, boiling point is 174, flash point is 50 (open cup). Easily soluble For water, acetone, benzene, and ethyl alcohol, briefly introduce the role of triethylenediamine soluble in linear hydrocarbons such as pentane, hexane, heptane, etc.; it can absorb CO2 in the air and turn yellow. It is weakly alkaline.

More people will pay attention: emergency treatment of anhydrous piperazine

Triethylenediamine is a tertiary amine compound with a double heterocyclic structure. It is mainly used as a gel catalyst for polyurethane foam. It is widely used in soft, semi-rigid and rigid polyurethane foam and elastomers. In addition, it can also Used as epoxy resin curing catalyst, ethylene polymerization catalyst, acrylonitrile polymerization catalyst-based ethylene oxide hydrocarbon polymerization catalyst, hexahydropyridine and other pesticide production initiators, and non-hydrogen electroplating additives. The chemical structure of triethylenediamine is very similar. It is a cage compound with three ethylene groups connected to two nitrogen atoms. Do you know the application of this simple bistriethylenediamine? The structure of the ring molecule is very full and symmetrical. It can be seen from the structure that there is no substitution group with great steric hindrance on the N atom, and its pair of empty electrons are easy to approach. In the foaming system, the isocyanate first reacts with it to form an active complex. The nature of the complex is very unstable. Once the urethane bond is formed, it will be freed, which is conducive to further catalysis. Although triethylenediamine is not a strong base, it exhibits extremely high catalytic activity for the reaction of isocyanate groups and active hydrogen compounds. Among the tertiary amine catalysts, triethylenediamine is the most important species, which can be widely used in various polyurethane foams (including soft, semi-rigid, rigid polyurethane foams, microcellular elastomers), coatings , Elastomers, etc. In the one-step foaming technique, triethylenediamine is notable for its main character. On the one hand, due to its high activity, the dosage is small; secondly, it has a strong catalytic effect on the gel reaction and foaming reaction, and it has a special catalytic effect on polyurethane and hydroxyl (urethane formation reaction, gel reaction) Stronger sex.

The content introduced above is about "a brief introduction to the role of triethylene diamine, do you know the application of triethylene diamine?", after reading our introduction, everyone has a sufficient understanding of this aspect. In addition to this, we also introduced Changzhou triethylenediamine, test long-tail words, hexapentapiperazine, etc. in another article, so stay tuned!

Keywords in this article: ethylene simple catalysis catalyst polyurethane reaction