METHOD OF CO-PRODUCTING POLYQUINONES AND ETHYLENE BISPHENOL Russian patent published in 2018 - IPC C10G61/10 C07C37/07 C07C39/16 C07C39/367 C07C253/30 C07C255/53 

FIELD: chemistry.

SUBSTANCE: invention relates to the method of producing polyquinone and ethylene bisphenol of the general formula , which is an effective antioxidant for synthetic rubbers, polyolefins, and lubricants. The method includes oxidizing monomers: hydroquinone and/or benzoquinone, and/or quinhydron, and/or pyrocatechol, with a dehydrogenating agent, which is a spatially substituted stilbenquinone of the general formula ; and the process is carried out at a temperature of 100-200°C, in the presence of water in a neutral medium, or an acid medium, or an alkaline medium mixed with a hydrocarbon solvent in which the dehydrogenating agent and the starting monomer are dissolved, where R_1-4 is tert-butyl.

EFFECT: method allows to obtain polyquinone with a high yield with a high conversion of spatially substituted stilbenquinone and using a simplified technology.

2 cl, 1 tbl, 14 ex