Di- alpha -cyanopentadienoate disiloxane compounds for use in adhesives

摘要

Anionically polymerizable di- alpha -cyanopentadienoate disiloxane compounds of the formula: [CH2=CH-CH=C(CN)-C(=O)-O-CH2-R-Si(R'')2]2-O where R is -CH=CH- or -C(=CH2)- and the R'' groups are the same or different hydrocarbon or halo substituted hydrocarbon groups are prepared by hydrolysis of a cyanoacetoxypropenylsilane having a hydrolyzable group attached to the silicon atom and then condensing the resulting disiloxane compound with acrolein. The di- alpha -cyanopentadienoate disiloxane compounds are useful as instant adhesives and as co-monomers in cyanoacrylate or cyanopentadienoate instant adhesives, providing the adhesive polymers or copolymers with improved thermal resistance.