[1] They have the formula (C3H6O)n.C6H10O3[2] and the IUPAC name is Poly[oxy(methyl-1,2-ethanediyl)],a-(2-oxiranylmethyl)-w-(2-oxiranylmethoxy)- [3] A key use is as a modifier for epoxy resins as a reactive diluent and flexibilizer.

[6] The product is made by taking polypropylene glycol and epichlorohydrin and reacting in the presence of a Lewis acid catalyst to form a halohydrin.

The molecule has 2 oxirane functionalities, and so a key use is modifying and reducing the viscosity of epoxy resins.

[9][10] These reactive diluent modified epoxy resins may then be further formulated into CASE applications: coatings,[11] adhesives, sealants, and elastomers.

This confers some degree of water miscibility though not as good as ethylene oxide based molecules.