Organic polymeric particles, paper coating compositions, and...

C - Chemistry – Metallurgy – 08 – F

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C08F 291/00 (2006.01) C08F 265/04 (2006.01) C08F 265/06 (2006.01) C08J 3/12 (2006.01) C08J 9/28 (2006.01)

Patent

CA 2758241

Embodiments of the present disclosure include organic polymeric particles, paper coating compositions, coated paper, and methods of forming coated paper with the paper coating compositions. The embodiments of the organic polymeric particle include an organic hydrophilic polymer with a unit for hydrogen bonding, and a hollow porous structure that comprises an organic polymer that at least partially surrounds the organic hydrophilic polymer, where the hollow porous structure has a pore surface area greater than 1 percent of a total theoretical exterior surface area of the hollow porous structure and the organic hydrophilic polymer and the hollow porous structure give the organic polymeric particle a void volume fraction of 40 percent to 85 percent.

La présente invention porte, dans des modes de réalisation, sur des particules polymères organiques, des compositions de couchage du papier, du papier couché et des procédés de fabrication du papier couché à l'aide des compositions de couchage du papier. Les modes de réalisation des particules polymères organiques comprennent un polymère hydrophile organique comportant une unité pour liaisons hydrogène, et une structure poreuse creuse comprenant un polymère organique qui entoure au moins partiellement le polymère hydrophile organique, la structure poreuse creuse ayant une surface spécifique des pores supérieure à 1 pour cent d'une surface spécifique extérieure théorique totale de la structure poreuse creuse, et le polymère hydrophile organique et la structure poreuse creuse donnant aux particules polymères organiques une fraction de volume de vide de 40 pour cent à 85 pour cent.

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