METHOD OF OBTAINING MONOMERS AND POLYMERS THEREOF

摘要

FIELD: chemistry; biochemistry. ^ SUBSTANCE: invention relates to biotechnology, particularly to a method of obtaining ethylene unsaturated amide or ethylene unsaturated carboxylic acid or its salt from the corresponding ethylene unsaturated nitrile, in which the nitrile is hydrated or hydrolysed in an aqueous medium in the presence of a biocatalyst, where the nitrile contains more than 2 parts by weight per million acrolein and amide or carboxylic acid or its salt contains 2 parts by weight per million acrolein. The method can be used to obtain acrylamide or acrylic acid (salt) of high purity from low-quality acrylonitrile containing a lot of acrolein. Suitable biocatalysts include Rhodococcus bacteria. ^ EFFECT: invention increases efficiency of producing ethylene unsaturated amide or ethylene unsaturated carboxylic acid or its salt from the corresponding ethylene unsaturated nitrile and provides a method of producing a polymer of ethylene unsaturated monomer. ^ 26 cl, 4 ex