Carbodiimide compound and uses thereof

Details Carbodiimide compound and uses thereof Carbodiimide compound and uses thereof

C - Chemistry, Metallurgy

08

G

C08G 81/00 (2006.01) C09C 3/12 (2006.01) C09D 17/00 (2006.01) G03G 9/16 (2006.01)

Patent

CA 2602712

A carbodiimide compound which realizes higher dispersibility and dispersion stability of a pigment, fine resin particles, and fine pigment/resin composite particles especially in a silicone dispersion medium; a pigment dispersion composition and a dispersion composition containing fine pigment/resin composite particles, the compositions each containing the compound and being suitable for use in a wide range of applications including oil-base ink-jet inks and liquid developers; and a liquid developer comprising the pigment dispersion composition and/or dispersion composition containing fine pigment/resin composite particles. The carbodiimide compound is one obtained from a polysiloxane-chain-containing compound having a functional group which reacts with a carbodiimide group and a carbodiimide compound having a carbodiimide equivalent of 100-50,000 by reacting the functional group of the former compound with the carbodiimide group of the latter to thereby incorporate the polysiloxane chain into the latter compound.

Composé carbodiimide permettant d~obtenir une plus grande dispersibilité et une meilleure stabilité de dispersion d~un pigment, de fines particules de résine, et de fines particules d~un composite pigment/résine, en particulier dans un milieu de dispersion à base de silicone ; composition de dispersion de pigment et composition de dispersion contenant de fines particules d~un composite pigment/résine, chacune des compositions contenant le composé et étant adaptée à une utilisation dans une large gamme d~applications, incluant les encres pour imprimantes à jet d~encre à base d~huile et les révélateurs liquides ; et révélateur liquide comprenant la composition de dispersion de pigment et/ou la composition de dispersion contenant de fines particules d~un composite pigment/résine. Le composé carbodiimide est obtenu à partir d~un composé contenant une chaîne polysiloxane ayant un groupe fonctionnel pouvant réagir avec un groupe carbodiimide et d~un composé carbodiimide ayant un équivalent carbodiimide de 100-50 000, en faisant réagir le groupe fonctionnel du premier composé avec le groupe carbodiimide du dernier composé, de façon à incorporer la chaîne polysiloxane dans le dernier composé.

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