Process for the preparation of polymers of definite viscosities

Details Process for the preparation of polymers of definite viscosities Process for the preparation of polymers of definite viscosities

C - Chemistry, Metallurgy

08

F

402/167

C08F 126/06 (2006.01) A61K 47/32 (2006.01) C08F 216/14 (2006.01)

Patent

CA 1181549

ABSTRACT OF THE DISCLOSURE Process for the preparation of copolymers of definite specific viscosities from hydantoin vinyl ethers of the formula I, Image (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 possible to vary the specific viscosity of the copolymers within wide limits by altering the ratio of the two solvents.

396487

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