Epichlorohydrin was used for glycidylation of trimethylolpropane in the 2-stage process In the presence of BF3. The intermediate chlorohydrin ethers were then subjected to the dehydrochlorination with NaOH. A direct process was employed, where the glicidylation was conducted under excess of epichlorohydrin in the presence of NaOH and a quaternary ammonium salt (Bu)(4)N(+)J(-), Bu4N+HSO4-) as the phase-transfer catalyst The direct synthesis at 55 degrees C with solid NaOH, gave after 3.5 h an ether-type product with a high epoxide equiv. (0.8 mol/100 g). The content of easily hydrolysable org. Cl was below 0.6%. In the 2-stage synthesis, the epoxide equiv. of the product was slightly lower. The content of easily hydrolysable chlorine was, however, high (4.5%).