AQUEOUS WATER BARRIER COATINGS

Described herein is a multi-phase polymer binder comprising:an aqueous polymer dispersion present in an amount of 65 wt% to 100 wt%;a hydrophobic emulsion from 0 wt% to 25 wt%; anda surfactant from 0 wt% to 10 wt%;wherein the polymer binder, when dried, provides a water uptake of less than 5 g/m2/20...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Seecharan, Andrew, Sardashti, Amirpouyan, Deeter, Gary, Reinhold, Frank
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES IMPREGNATING OR COATING OF PAPER 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 PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Described herein is a multi-phase polymer binder comprising:an aqueous polymer dispersion present in an amount of 65 wt% to 100 wt%;a hydrophobic emulsion from 0 wt% to 25 wt%; anda surfactant from 0 wt% to 10 wt%;wherein the polymer binder, when dried, provides a water uptake of less than 5 g/m2/20 min in accordance with Cobb test, a seal strength of at least 200 Newton/meter (N/m) as measured at 25 °C and 90 °C, and block resistance of 3 to 5 when measured at 50° C and 60 psi for 24 hours in accordance with the method described in the description, andthe aqueous polymer dispersion comprises an acid-rich copolymer present in an amount of 5 wt% to 60 wt%; and an acid-free copolymer present in an amount of 40 wt% to 95 wt%, wherein the acid-rich copolymer comprises carboxylic acid functional monomers in an amount of 5 wt% to 25 wt%; styrene in an amount of up to 70 wt%; and (meth)acrylate monomers in an amount of 10 wt% to 90 wt%, andthe acid-free copolymer comprises styrene in an amount of up to 50 wt%; and (meth)acrylate monomers in an amount of 50 wt% to less than 100 wt%, andwherein the aqueous polymer dispersion has a solids content (NV %) from 40.3 to 47.9%.