METHOD FOR PRODUCING WATER-SOLUBLE NON-TURBID COPOLYMER OF AT LEAST ONE KIND OF WATER-SOLUBLE N-VINYL LACTAM AND AT LEAST ONE KIND OF HYDROPHOBIC COMONOMER BY POLYMERIZATION UNDER ELEVATED PRESSURE

PROBLEM TO BE SOLVED: To provide an improved method for producing a copolymer composed of at least one kind of hydrophilic N-vinyl lactam and at least one kind of hydrophobic comonomer and soluble in water to form a transparent solution by the radical copolymerization of the monomers in an organic s...

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Hauptverfasser:	NEUTZNER JOSEF, NIEBERLE JUERGEN, BOUQUET WOLFGANG, DIEING REINHOLD DR, EBERHARD SCHUPP, ULRICH FILGES, KARL-HERMANN STRUBE, DOBRAWA RAINER, ANDREAS GRUBER, WIDMAIER RALF, KLAUS SCHNELL
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an improved method for producing a copolymer composed of at least one kind of hydrophilic N-vinyl lactam and at least one kind of hydrophobic comonomer and soluble in water to form a transparent solution by the radical copolymerization of the monomers in an organic solvent. SOLUTION: A vinyl lactam copolymer is produced by the radical polymerization of at least one kind of water-soluble N-vinyl lactam and at least one kind of hydrophobic comonomer in an organic solvent in the presence of an initiator. The polymerization is carried out under a gauge pressure to prevent the evaporation of the components. COPYRIGHT: (C)2007,JPO&INPIT