Transparent varnish composition

According to an example aspect of the present invention, there is provided a method of preparing a transparent varnish composition. The method comprises the steps of providing a binder, adding to the binder 1 to 40 wt % precipitated calcium carbonate particles by weight of the composition, wherein t...

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Bibliographische Detailangaben
Hauptverfasser:	VIITANEN, Jorma, NYLUND, Katrine, HAAKANA, Sami
Format:	Patent
Sprache:	eng ; fin ; swe
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS 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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Beschreibung
Zusammenfassung:	According to an example aspect of the present invention, there is provided a method of preparing a transparent varnish composition. The method comprises the steps of providing a binder, adding to the binder 1 to 40 wt % precipitated calcium carbonate particles by weight of the composition, wherein the precipitated calcium carbonate particles have an average D50 particle size of 60 to 120nm measured by dynamic light scattering, fewer than 10 % of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 75 nm or less, fewer than 10 % of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 110 nm or more, the steepness of the particle size distribution is in the range of 1.3 - 1.55, and dispersing the precipitated calcium carbonate in the composition. Esillä olevan keksinnön esimerkkinäkökohdan mukaan tarjotaan menetelmä läpinäkyvän lakkakoostumuksen valmistamiseksi. Menetelmä käsittää vaiheet, joissa otetaan käyttöön sideaine, sideaineeseen lisätään 1- 40 paino-% saostuneita kalsiumkarbonaattipartikkeleita koostumuksen painosta, jolloin saostettujen kalsiumkarbonaattipartikkeleiden keskimääräinen D50 partikkelikoko on 60 - 120 nm mitattuna dynaamisella valonsironnalla, alle 10 prosentilla saostetuista kalsiumkarbonaattipartikkeleista tilavuutena kaikista kalsiumkarbonaattipartikkeleista on partikkelikoko 75 nm tai pienempi, alle 10 prosentilla saostetuista kalsiumkarbonaattipartikkeleista tilavuutena kaikista kalsiumkarbonaattipartikkeleista on partikkelikoko 110 nm tai enemmän, partikkelikokojakauman jyrkkyys on 1,3 - 1,55, ja saostuneen kalsiumkarbonaatin dispergointi koostumukseen.