UNA DISPERSION ACUOSA DE POLIMERIZADO, PARA LA OBTENCION DE BARRERAS DE VAPOR DE AGUA

LA INVENCION TIENE COMO FINALIDAD SUMINISTRAR UNA DISPERSION ACUOSA DE POLIMERIZADO, CUYO POLIMERI- ZADO ESTA COMPUESTO DE VINILAROMATICOS Y DIENOS CONJUGADOS, Y QUE PRESENTA UN REDUCIDO CONTENIDO DE IONES DE METALES ALCALINOS, PARA LA OBTENCION DE BARRERAS DE VAPOR DE AGUA, ASI COMO LA DISPER- SION...

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Hauptverfasser:	WISTUBA ECKEBARD, DRAGON ANDREE, ANSELMANN THOMAS, SCHMIDT JURGEN
Format:	Patent
Sprache:	spa
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Zusammenfassung:	LA INVENCION TIENE COMO FINALIDAD SUMINISTRAR UNA DISPERSION ACUOSA DE POLIMERIZADO, CUYO POLIMERI- ZADO ESTA COMPUESTO DE VINILAROMATICOS Y DIENOS CONJUGADOS, Y QUE PRESENTA UN REDUCIDO CONTENIDO DE IONES DE METALES ALCALINOS, PARA LA OBTENCION DE BARRERAS DE VAPOR DE AGUA, ASI COMO LA DISPER- SION ACUOSA DE POLIMERIZADO POBRE DE METALES AL- CALINOS MISMA. . Aqueous polymer dispersions (I), containing a radical copolymer (CP) with an alkali metal ion content (GA) of not more than 0.5 wt.%, based on (A) 20-65 wt.% vinylaromatic monomer(s), (B) 35-80 wt.% comonomer(s) with two conjugated double bonds and (C) 0-10 wt.% other comonomers with at least one double bond. Also claimed are (i) aqueous polymer preparations containing (I) and finely divided pigment in amounts of up to 60 vol.% (IIA) or 20-45 vol.% (IIB); (ii) substrates coated with a film of (I) or (II), and (iii) a process for the production of (I) by radical- initiated aqueous emulsion polymerisation of the above comonomers, with the addition of ammonia and/or organic amine to increase the pH of the dispersion medium.