abstract |
A process for the preparation of pulverulent homopolymers by homopolymerisation of N-vinyl carboxamides, amides, nitriles and water-soluble esters of ethylenically unsaturated carboxylic acids, N-vinylimidazoles and N-vinylimidazolines in liquid carbon dioxide or in supercritical carbon dioxide under pressure in the presence of free-radical-forming initiators. |