Patent ID: 6096848
Filing Date: 2000-08-01
Classification: C07C,C09J,H01B,H01L,H05K,Y02P

Abstract:
A process for the production of a biscyanoacrylate corresponding to the following general formula:[H.sub.2 C.dbd.C(CN)--CO--O].sub.2 R.sup.1 (I)wherein R.sup.1 is the residue of a diol, which comprises the steps of:esterifying a 2-cyanoacrylic acid or transesterifying an alkyl ester thereof corresponding to the following general formula:H.sub.2 C.dbd.C(CN)--CO--O--R.sup.2 (II)in which R.sup.2 is selected from the group consisting of hydrogen and branched and unbranched alkyl groups containing 1 to 6 carbon atoms with a diol corresponding to the following general formula:[HO].sub.2 R.sup.1 (III)to obtain a reaction mixture; andfractionally crystallizing the reaction mixture to obtain the biscyanoacrylate.