Toners comprising modified pigments and processes for...

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 11/00 (2006.01)

Patent

CA 2595591

The present invention relates to toner compositions comprising a resin and a colorant. Various embodiments of the colorant used in the toner compositions are disclosed, including a modified pigment comprising a pigment having attached at least one organic group having the formula -X-I, wherein X, which is directly attached to the pigment, represents an arylene or heteroarylene group, or an alkylene group, and I represents a non-polymeric group comprising at least one ionic group or at least one ionizable group. Processes for preparing toner compositions are also described.

La présente invention se rapporte à des compositions de toners comportant une résine et un colorant. L'invention se rapporte à divers types de colorant utilisés dans ces compositions de toners, notamment à un pigment modifié comprenant un pigment sur lequel est fixé au moins un groupe organique représenté par la formule -X-I, dans laquelle X, qui est directement fixé sur le pigment, représente un groupe arylène ou hétéroarylène, ou un groupe alkylène, et I représente un groupe non polymère comprenant au moins un groupe ionique ou au moins un groupe ionisable. L'invention se rapporte également à des procédés permettant la préparation de ces compositions de toners.

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