Fremgangsmåde og polymer til undgåelse af va/sr-kedelsten med indbygget påviselig phosphorfunktionalitet

The present invention relates to processes for preparing a phosphorus-containing polymer, comprising the steps of (i) copolymerizing at least (a) monoethylenically unsaturated dicarboxylic anhydrides having from 4 to 6 carbon atoms with (b) olefins of the formula CH2=C(R1)R2 where R1 is H or CH3 and...

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Bibliographische Detailangaben
Hauptverfasser:	GOETHLICH, ALEXANDER, NEUBECKER, KARIN, HERRERA TABOADA, LIDCAY, GUZMANN, MARCUS
Format:	Patent
Sprache:	dan
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The present invention relates to processes for preparing a phosphorus-containing polymer, comprising the steps of (i) copolymerizing at least (a) monoethylenically unsaturated dicarboxylic anhydrides having from 4 to 6 carbon atoms with (b) olefins of the formula CH2=C(R1)R2 where R1 is H or CH3 and R2 is H, CH3, C2H5 or phenyl, and (c) phosphorus-containing ethene derivatives of the formula CH2=CHX where X is a phosphoric acid radical, a phosphonic acid radical, a phosphorous acid radical or a corresponding salt or corresponding ester; (ii) at least partly ring-opening the remaining anhydride groups. The invention further relates to phosphorus-containing polymers obtainable from this process and to processes for preventing Ba/Sr scale with the aid of the polymer.