SU520348A1 - Method for producing methylaminated bisphenols - Google Patents

Description

(54)

METHOD OF OBTAINING METHYLENAMINATED BISPHENOLS

This invention relates to a process for the preparation of new, methylaminated bisphenols with a total pho 1 HR where is methyl or ethnl; R is methyl or CH iRp residue. which can be used as starting compounds for the preparation of surfactants and antistatic agents, as well as polymer stabilizers. Various methods are known for preparing methyl aminated bisphenols. The most promising of these is the method of producing methylenated niphenol bisphenols of the general formula INSHTCHC CHllS HR RHKHjCCHjNHR where R is hydrogen, C? -C4 alkyl or C -C-alkenyl, R-methylidene, ethylidene or isopropylcene, according to Mashshkha interaction by bnsphenoyl An appropriate structure with formaldehyde w ammonia or primary amines taken in a 1 stoichiometric ratio, an aqueous I formaldehyde solution being added to the mixture of bisphenol and aNfflHa. Such an order of introduction of the reactants into the reaction permits maintaining a high concentration of bisphenol in the reaction mixture, which usually results; to the formation of by-products and, consequently, I but to the low yield of the target products. There is no information in the literature about the method of preparation and the properties of methylsamine: bisphenol baths of general formula I. I A method is proposed to obtain methylenyamide bisphenols of general formula 1, namely, the secondary amine is reacted with bisphenol and formaldehyde, and the initial reagents bisphenol, for) maldep1di secondary; The process is taken in a ratio close to the static one, and bisphenol is introduced into the mixture of amine and formaldehyde. Reakil according to the proposed procedure is carried out according to the following procedure.