Ink jet recording paper

C - Chemistry – Metallurgy – 01 – F

Patent

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Details

C01F 11/18 (2006.01) B41M 5/00 (2006.01)

Patent

CA 2570262

A product and a process for the preparation of a precipitated calcium carbonate (PCC) and an ink jet recording paper, incorporating the precipitated calcium carbonate is disclosed. The precipitated calcium carbonate is dewatered and comminuted in the presence of an amphoteric and/or anionic dispersant to produce a high solids PCC composition. When used in coating formulations the PCC has a surface morphology and chemistry that enhances the printability of ink jet paper. Ink jet recording paper incorporating the PCC of the present teachings has reduced ink feathering and spreading as well as improved optical density, dry time, and water fastness.

La présente invention décrit un produit et un procédé de préparation d~un carbonate de calcium précipité (CCP) et un papier d~enregistrement pour impression à jet d~encre qui incorpore le carbonate de calcium précipité. Le carbonate de calcium précipité est épaissi et broyé en présence d~un agent dispersant amphotère et/ou anionique afin de produire une composition de CCP très garnissante. Lorsqu~il est utilisé dans les formulations d~enduits, le CCP a une morphologie et une chimie de surface qui améliorent l~imprimabilité du papier pour impression à jet d~encre. Le papier pour impression à jet d~encre incorporant le CCP des présentes explications présente des bavures et des dispersions d~encre réduites et aussi une densité optique, un temps de séchage et une solidité à l~eau améliorés.

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