Cationic core-shell particles with acid-swellable shells

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 257/02 (2006.01) B41M 5/00 (2006.01) B41M 5/52 (2006.01) C08F 265/04 (2006.01) C08F 291/00 (2006.01) C08F 291/02 (2006.01) C08F 291/12 (2006.01) C08G 18/72 (2006.01) C09D 151/00 (2006.01)

Patent

CA 2489005

This invention concerns cationic core-shell particles having an acid-insoluble polymeric core and an acid-swellable polymeric shell component disposed generally about said core so that upon neutralizing said shell with acid, a portion of said shell remains attached or associated with said core. This invention further concerns polymer latex compositions wherein said polymeric shell component has been neutralized and substantially, but not totally, dissolved so as to form a blend of neutralized core-shell polymer and an aqueous solution of neutralized shell polymer. More particularly, the invention concerns the use of latex compositions produced from these cationic core-shell particles to formula

La présente invention se rapporte à des particules coeur-écorce cationiques, qui contiennent un coeur polymérique insoluble dans l'acide et un élément écorce polymérique gonflable dans l'acide, disposé sensiblement à proximité dudit coeur, de façon que, lors de la neutralisation de ladite écorce avec l'acide, une partie de celle-ci reste fixée ou associée audit coeur. L'invention concerne également des compositions de latex polymériques, dans lesquelles ledit élément écorce polymérique a été neutralisé, et sensiblement, mais pas totalement, dissous, afin que se forme un mélange constitué d'un polymère coeur-écorce neutralisé et une solution aqueuse contenant un polymère d'écorce neutralisé. Plus précisément, l'invention a trait à l'utilisation de compositions de latex produites à partir desdites particules coeur-écorce cationiques, pour produire des revêtements réceptifs au jet d'encre.

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