Anionic polymerization of N,N‐disubstituted acrylamides in hydrocarbon media is stereospecific and yields a new series of crystalline tactic polymers containing polar groups. These tactic polymers melt above 300°C. and have different solubilities from the atactic isomers. There are also differences in the rates of hydrolysis and infrared spectra. The presence of ethers in the polymerization lowers both the tacticity of the product and its molecular weight. A heterogeneous surface is not necessary for stereospecificity, and, in cases where monomer and initiator are soluble in hydrocarbons, the reaction is homogeneous throughout.

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The preparation of some novel dicarboxylic acids* containing one or more phenoxyacetic acid group(s) is described. The acids give polyamides of high molecular weight when condensed with diamines. Some properties of the polyamides with hexamethylenediamine and decamethylenediamine are described.

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