Process for the preparation of polymers of definite viscosities

Abstract From the Canadian patent

Process for the preparation of copolymers of definite specific viscosities from hydantoin vinyl ethers of the formula I (I), in which R1 represents hydrogen or an organic radical R2, represents an alkylene having 1 to 6 C atoms or the radical (alkylene-O)nalkylene in which the alkylenes contain 1 to 6 C atoms and n represents a number from 1 to 6, and R3 and R4 independently of one another each represent hydrogen an alkyl having 1 to 6 C, atoms, or an aryl or R3 and R4 together represent the tetramethylene or pentamethylene radical, and olefinically unsaturated compounds by free-radical polymerisation of the monomers in a solvent mixture consisting of cyclohexane and toluene it being …