An ink jet receptive coating composition

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 101/26 (2006.01) B41M 5/00 (2006.01) B41M 5/52 (2006.01) D21H 19/34 (2006.01)

Patent

CA 2217525

Ink jet ink receptive coating compositions for use in preparing ink jet recording media are provided. The coatings contain a cellulose ether and an alumina particulate. Preferably, the coating compositions contain about 50% to about 95% of the cellulose ether on a weight/weight basis, based on the amount of solids in the coating composition. Exemplary cellulose ethers that may be used in the coating compositions include methylcellulose and hydroxyalkyl methylcellulose. Preferably, the cellulose ether has a hydroxyalkyl content of 0% to about 32% and a methoxy content of about 16% to about 32%. With the ink jet ink receptive coating compositions, one can provide ink jet recording media that possess the combined properties of (i) a low level of ink cracking, (ii) good optical density, and (iii) a good dry time, when printed in an ink jet printing process.

Compositions de revêtement réceptives à l'encre appliquée par jet et utilisées pour la préparation de supports d'enregistrement soumis à un procédé d'impression par jet d'encre. Les compositions de revêtement contiennent de l'éther de cellulose et de l'alumine particulaire. De préférence, les compositions de revêtement contiennent approximativement entre 50 et 95 % d'éther de cellulose à poids égal, selon la quantité de solides se trouvant dans la composition de revêtement. Les éthers de cellulose pouvant être utilisés dans ces compositions de revêtement comprennent la méthylcellulose et la méthylcellulose hydroxyalkylée. De préférence, l'éther de cellulose contient approximativement entre 0 et 32 % d'hydroxyalkyle, et entre 16 et 32 % de méthoxyle. Avec ces compositions de revêtement réceptives à l'encre, on peut obtenir un support d'enregistrement au moyen d'un jet d'encre et qui possède les propriétés suivantes : i) faible taux de craquelage, ii) bonne densité optique et iii) séchage rapide.

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