Английская Википедия:1,4-Butanediol diglycidyl ether

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Шаблон:Chembox1,4-Butanediol diglycidyl ether (B14DODGE) is an organic chemical in the glycidyl ether family. It is aliphatic and a colorless liquid. It has two epoxide (oxirane) groups per molecule.[1] Its main use is in modifying epoxy resins especially viscosity reduction.[2]

It is REACH registered.[3] The IUPAC name is 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane.

Synthesis

1,4-Butanediol and epichlorohydrin are reacted in the presence of a Lewis acid as catalyst to form a halohydrin: each hydroxyl group of the diol reacts with an epoxide on epichlorohydrin. This process is followed by washing with sodium hydroxide to re-form the epoxide rings in dehydrochlorination reaction.[4] One of the quality control tests would involve measuring the Epoxy value by determination of the epoxy equivalent weight.

Uses

A key use is modifying the viscosity and properties of epoxy resins[5] which may then be formulated into CASE applications: Coatings,[6] Adhesives, Sealants, Elastomers, composite materials, fillers, putties, plasters, modelling clay and semiconductors. It also has a number of medical applications.[7][8][9] The molecule is also used to synthesize other molecules.[10][11] As an Epoxy modifier it is classed as an epoxy reactive diluent.The use of the diluent does effect mechanical properties and microstructure of epoxy resins.[12][13]

Toxicity

The toxicity is fairly well known and understood and is rated as a severe skin and eye irritant. Contact dermatitis is also possible.[14][15][16]

References

Шаблон:Reflist

Further reading

External websites

Шаблон:Glycidyl ethers