abstract |
FIELD: motor fuel production. SUBSTANCE: component is prepared by reaction of isobutene and linear butanes from butane-butylene fractions with formaldehyde sulfuric acid at 45-80 C and pressure 1.4-1.8 MPa for 5-12 h to give product composed, %: 4,4-dimethyl-1,3-dioxane, 44.1-63.5; 4,5- dimethyl-1,3-dioxane, 27.0-45.0; 4-ethyl-1,3-dioxane, 7.5-8.9; and other components, 2. EFFECT: extended resource of raw materials and increased choice of antiknock components. 1 dwg, 2 tbl |