Inst ante an adhesive composition with calix arenes which may with mixed functionality as the accelerator.

摘要

Cyanoacrylate adhesive compsns. contain a calixarene cpd. of formula (I) as accelerator. In the formula R3 = H, -CH2COOH, -CH2COOR6, -CO.R8, hydrocarbyl, or trihydrocarbylsilyl or the two gps. R3 together form a divalent hydrocarbyl or oxygen-interrupted hydrocarbyl gp. R5 = hydrocarbyl, hydrocarbyl interrupted by one or more O atoms, or hydrocarbyl substd. with halogen, nitro or oxo gps.; R6 is as for R5 but is different from this; and R8 is as for R5 and is the same or different from this. Pref. cpds. (I) have R1 = OCH2CH3; R4 = H, alkyl or alkenyl, esp. t-butyl; R3 = H, -CH2COOG or hydrocarbyl and R5 = hydrocarbyl. Pref. the cyanoacrylate adhesive contains (1) a monomer of formula (II) in which R7 = opt. substd. 1-12C straight or branched chain alkyl, 2-12C straight or branched chain alkenyl, 2-12C straight or branched chain alkynyl, cycloalkyl, aralkyl or aryl gp.; (2) an anionic polymerisation inhibitor; (3) a radical polymerisation inhibitor, (4) a thickener, (5) special additives such as plasticisers and heat stabilisers and (6) perfumes, dyes, pigments, etc.