SILICON-CONTAINING ESTERS OF ALPHA-CYANOACRYLIC ACID - SYNTHESIS AND PROPERTIES

A number of cyanoacetates have been synthesized: cyanoacetoxymethyltri methylsilane (1), cyanoacetoxymethylpentamethyldisiloxane (2), cyanoac etoxyetoxymethylpentamethyldisiloxane (3). They were converted by the Knoevenagel reaction to novel esters of alpha-cyanoacrylic acid (4-13) containing silicon atoms in the ester groups and having the general f ormula RCH=C(CN)COOCH2X (where R = H, 4-MeOC6H4, MeCH=CH, 2-furyl; X = SiMe3, SiMe2OSiMe3. CH2OCH2SiMe2OSiMe3). These compounds are capable of copolymerization with esters of cyanoacrylic acid which are the pre cursors to adhesives for cold curing.