PAPER COATING PIGMENTS

PAPER COATING PIGMENTS

A coating composition for use in producing a coating on paper and other substrates comprises an aqueous suspension of a particulate pigment together with a binder, wherein the particulate pigment comprises a mixture of: a fir st pigment component comprising particulate ground calcium carbonate (GCC)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: THRALE, DEB, IYER, RAJAN R, NUTBEEM, CHRISTOPHER, PANFIL, DANIEL J, MORTIMER, MARK, SKUSE, DAVID
Format: Patent
Sprache:eng ; fre
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
IMPREGNATING OR COATING OF PAPER
INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS
INORGANIC CHEMISTRY
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
POLISHES
PREPARATION OF CARBON BLACK
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:A coating composition for use in producing a coating on paper and other substrates comprises an aqueous suspension of a particulate pigment together with a binder, wherein the particulate pigment comprises a mixture of: a fir st pigment component comprising particulate ground calcium carbonate (GCC) havi ng a particle size distribution (psd) steepness factor ranging from about (30) to about (45); and a second pigment component comprising either particulate precipitated calcium carbonate (PCC) having a psd steepness factor ranging from about (55) to about (75), or particulate GCC having a psd steepness factor ranging about (40) to about (55). The particulate pigment may optionally further include a particulate kaolin clay.