| 摘要 |
<p>Derivs. of alpha-cyanoacrylic acid which protect organic substances from u.v.-radiation have formula: (where Q is diphenyl(ene)sulphide, or diphenylene-oxide, which is, when m is larger than 1, at most twice subst. by halogen and/or alkyl or alkoxy; R1 and R2 are alkyl or alkenyl, Y is -CN, -COOZ1 or (where Z1 is opt. substd. alkyl, cycloalkylo or aryl; Z2 and Z3 either form together with the N-atom a heterocycle or separately are equal to Z1 and m is 1 or 2).</p> |
