Polymerization initiators for polar

Claim 1

A PROCESS FOR THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED POLAR MONOMERS WHICH COMPRISES REACTING THE SAME IN A SOLVENT HAVING A DIELECTRIC CONSTANT IN EXCESS OF 2.0 AT 25* C., UNDER INERT CONDITIONS, AT A TEMPERATURE IN THE RANGE OF FROM 40*C. TO ABOUT 80*C., AT A PRESSURE IN THE RANGE OF FROM 1 TO 150 ATMOSPHERES ABSOLUTE AND IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST OBTAINED BY FIRST IRODUCING AN ORGANO-SUBSTITUTED PHOSPHINE INTO A SOLUTION OF DIOXANE FOLLOWED BY THE ADDITION THERETO OF A METAL HALIDE, SAID ORGANO-SUBSTITUTED PHOSPHINE HAVING THE GENERAL FORMULA P(R)3 WHERE R IS A HYDROCARBON RADICAL CONTIANING FROM 1 TO 12 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, ALKYLCYCLOALKYL, ARYL, ALKYLARYL AND MIXTURES THEREOF AND SAID METAL HALIDE BEING DERIVED FROM A METAL SELECTED FROM GROUPS IV-A, IV-B AND V-B OF THE MENDELEEV PERIODIC TABLE, AND WHEREIN SAID ORGANO-SUBSTITUTED PHOSPHINE AND SAID METALLIC HALIDE ARE PRESENT IN A MOLAR RATIO OF FROM 1:10 TO 10:1, PERMITTING REACTION TO TAKE PLACE IN AN ANHYDROUS AND INERT ATMOSPHERE, ALLOWING CRYSTALS TO FORM AND SETTLE OUT FROM THE RESULTING REACTION MIXTURE AND THEREAFTER RECOVERING THE CRYSTALS FROM SAID REACTION MIXTURE.