METHOD OF PRODUCING BUTADIENE Russian patent published in 2015 - IPC C07C11/167 C07C2/86 

FIELD: chemistry.

SUBSTANCE: process is carried out in a high-pressure reactor in the presence of a macroporous cationite in hydrogen form based on polystyrene with grafted sulpho groups at 120-140°C; the used solvent is a hexane solvent - nefras; the formaldehyde source used is 1,3,5-trioxane or 1,3-dioxolane, or a mixture of polyoxymethylene glycol, with molar ratio of propylene to formaldehyde of (3-5):1, respectively, and said macroporous cationite is 10-20 w.p. per 100 w.p. of a mixture of propylene and the formaldehyde source, and the process is carried out until complete conversion of formaldehyde.

EFFECT: use of the present method reduces power consumption, improves environmental safety by simplifying the method of producing butadiene and reducing the amount of waste water.

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