olefinically unsaturated amides such as acrylamide n methyl acrylamide n t butyl acrylamide n cyclohexyl acrylamide diacetone acrylamide methacrylamide and n ethyl methacrylamide u03b1 u03b2 olefinically unsaturated n alkylol amides having the structural formula str1 wherein r is a hydrogen or an alkyl group containing from 1 to 4 carbon atoms and x is a number from 1 to 4 such as n methylol acrylamide n ethylol acrylamide n propylol acrylamide n methylol methacrylamide and n ethylol methacrylamide polyfunctional compounds such as methylene bis acrylamide ethylene glycol dimethacrylate diethylene glycol diacrylate allyl pentaerythritol and divinyl benzene u03b1 u03b2 olefinically unsaturated carboxylic acid monomers containing from 3 to 10 carbon atoms such as acrylic acid methacrylic acid crotonic acid u03b2 acryloxy propionic acid hydrosorbic acid sorbic acid u03b1 chlorosorbic acid cinnamic acid u03b2 styrlacrylic acid itaconic acid citraconic acid maleic acid fumaric acid mesaconic acid glutaconic acid aconitic acid and the like the preferred acid monomers are the u03b1 u03b2 monoolefinically unsaturated monocarboxylic acids such as acrylic acid and methacrylic acid and the like as are known to those skilled in the art mixtures of one or more of the above mentioned monomers may be employed if desired generally the butadiene or alkyl acrylate polymers will contain about 50 to 70 by weight butadiene or alkyl acrylate wherein the alkyl group contain 1 to 8 carbon atoms 20 to 45 of acrylonitrile and up to about 20 by weight of other polymerizable vinylidene comonomers interpolymerized the polymer latices may be prepared using any of the conventional polymerization techniques the emulsifier may be charged at the outset of the polymerization or may be added incrementally or by proportioning throughout the run any of the general.