METHOD FOR PREPARING INTERMEDIATE COMPOUND - DERIVATIVE OF HYDROXYESTER AND EPOXY RESINS PREPARED FROM IT Russian patent published in 2006 - IPC C08G59/00 C07D303/23 C07C41/22 C09D5/03 C08G59/02 C08G59/04 C07C41/02 C07C69/35 C07C69/157 C07C69/16 C09D163/00 C09J163/00 

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to derivative of α-hydroxyester and to a method for its preparing, to a method for preparing α-halohydrin intermediate compound and to a method for preparing epoxy resin from it, and to composition based on epoxy resin. Epoxy resin represents compound of the general formula: (R²)_yAr(OR^1'')_z wherein y means values from 0 to 750; z means values from 1 to 250; Ar represents fragment comprising aromatic compounds; R^1'' represents fragment comprising glycidyl; R² represents chlorine, bromine, iodine, fluorine atom, alkyl group, cycloaliphatic group or aromatic group substituting hydrogen atom in fragment Ar. Method for preparing epoxy resin involves three stages. At the first stage method involves preparing α-hydroxyester of one or more phenols by interaction at least one or more phenols with glycidyl ester or substituted glycidyl ester. Derivative of α-hydroxyester corresponds to the formula: (R²)_yAr(OR^1')_z wherein y, z, Ar and R² have above given values; R^1' represents fragment comprising propyl α-hydroxyester. At the second stage method involves preparing α-halohydrin intermediate compound of at least one or more phenols by interaction of derivative of α-hydroxyester, at least one or more phenols with halide hydrogen. α-Halohydrin intermediate compound has the formula: (R²)_yAr(OR^1')_z wherein y, z, Ar and R² have above given values, and R^1' represents fragment comprising α-halohydrinpropyl. At the third stage method involves carrying out the epoxidation reaction of abovementioned α-halohydrin intermediate compound of at least one or more phenols. Composition for powder cover comprises at least two or more components wherein at least one component represents epoxy resin. Invention provides preparing epoxy resin in the absence of epichlorohydrin by using above given stages.

EFFECT: improved preparing method.

75 cl, 4 tbl, 2 ex