THERMAL HYDROLYSIS OF BY-PRODUCTS OF SITE OF 4,4-DIMETHYL-1,3-DIOXANE SYNTHESIS
Thermal hydrolysis of by-products formed during 4,4-dimethyl-1,3-dioxane production, mainly consisting of dioxane alcohols, their formals and ethers as well as 4-methyltetrahydropyrane derivates, results in only formation of tars and the split products of linear formals. The yield of useful products amounts to 250 kg per 1 ton of high-boiling by-products (HBBP) to be processed. Hydrolysis catalyzed with acid significantly increases the yield of target products.