METHOD OF PREPARING (METH)ACRYLIC ACID OR ITS SALT AQUEOUS SOLUTION

摘要

organic chemistry, chemical technology. SUBSTANCE: solution of high concentration of ammonium(meth)acrylate and no containing (meth)acrylonitrile practically is obtained by enzymatic hydrolysis of (meth)acrylonitrile in the presence of water using enzyme exhibiting value Km for (meth)acrylonitrile below 500 mcM and value Ki for ammonium(meth)acrylate above 100 000 mcM. Preferably, enzyme obtained by culturing Rhodococeus rhodochrous NCI MB 40757 or NCI MB 40833 is used. Product obtaining by this method has no impurities practically. EFFECT: enhanced effectiveness and economy of method as compared with known chemical methods. 19 cl, 3 ex