Specific examples include citrial, cinnamyl acetate, cinnamaldehyde, 4 vinylphenyl cinnamates, 4 vinylphenyl, 4 nitrocinnamate, 4 isopropenylphenyl cinnamate, poly, poly{1 ethylene co 1 ethylene}, 3 acrolein), {HEAD ~ fumaric acid diethylester}, fumaric acid dihexyl ester, maleic acid dibutylester, maleic acid diphenyl ester, N phenyl maleinide, N maleimide, m phenylenediamine bis, and N,{TAIL ~ N} 1,3 phenylenedimaleimide, and polyfunctional maleimide polymer MP 2000 from Kennedy and Klim, Little Silver, N.J 