摘要:
A non-aqueous inkjet ink includes a quinacridone pigment and a dispersion synergist wherein the quinacridone pigment is a mixed crystal including a dimethyl substituted quinacridone and a monomethyl substituted quinacridone and the dispersion synergist includes at least one acid group.
摘要:
The invention relates to a pigment dispersion comprising: a condensate of or a salt between a polyallylamine and a polyester having a free carboxylic acid or the salt; a pigment derivative represented by the following general formula (1); a pigment; and an organic solvent, (PnullX)nullnullN(R1, R2, R3, R4)nullnullnullnullgeneral formula (1) wherein P represents an organic dyestuff residue; X represents a sulfonic acid group or a carboxylic acid group; R1 represents an alkyl group having 5 to 20 carbon atoms; and R2, R3 and R4 each independently represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.
摘要:
The invention provides a production process for a self-dispersible pigment, having a step of bonding a functional group containing a hydrophilic group to a particle surface of a pigment by causing at least one treatment agent selected from the group consisting of a compound represented by the following general formula (1) and a compound represented by the following general formula (2) to react with the particle surface of the pigment: wherein A1 and A2 are each a carboxylic acid group or the like.
摘要:
A method for preparing a surface modified organic pigment includes the steps of a) reacting the organic pigment in an aromatic hydrocarbon solvent with a surface modifying reagent to form a surface modified organic pigment; and b) washing and drying the surface modified organic pigment; wherein the surface modifying reagent is represented by Formula (I): wherein, X is selected from the group consisting of O, S and N—R3; Y is selected from the group consisting of —O—, and NR4; R1 to R4 are each independently selected from the group consisting of hydrogen, an alkyl group, an alkenyl group, an alkynyl group, a -aralkyl group, an alkaryl group, and an aryl group and s heteroaryl group; with the proviso that when Y—R1 is different from OH that at least one of R2 to R4 is substituted by at least one functional group having a pKa between 2.5 and 9.
摘要:
There is provided a water-based ink for inkjet recording, including: a self-dispersible pigment modified by carboxylic acid group; glycerol; diethylene glycol; alkylene glycol monoalkyl ether; and water, wherein the glycerol and the diethylene glycol satisfy the following condition (i): 0.24≦DEG/(Gly+DEG)≦0.92 (i) in the condition (i), Gly represents an amount of the glycerol in the water-based ink (% by weight); and DEG represents an amount of the diethylene glycol in the water-based ink (% by weight).
摘要:
A method of preparing a pigment includes, in order, the steps of: a) providing a pigment containing a nucleophile group under basic conditions; b) reacting the pigment with a compound according to Formula (I): wherein, X is a halogen atom or a tosylate group, and R1 and R2 independently represent an alkyl group; and c) hydrolyzing the R1-O bond and/or the R2-O bond. The obtained pigments can be used in non-aqueous pigment dispersions.
摘要:
Provided is a synthesis method for a self-dispersible pigment, including performing ring-opening addition of a lactone-based compound to an acidic group bonded to a surface of a pigment particle directly or via another atomic group to bond a functional group including an ester group to the surface of the pigment particle.
摘要:
An object of the present invention is to provide an aqueous ink which can form a more excellent image in bleeding resistance, character quality and print density than the image formed by using an aqueous ink containing a conventional self-dispersion pigment and a salt. The aqueous ink includes a self-dispersion pigment and a salt, in which the self-dispersion pigment is a pigment containing a pigment particle having a —R—(COOM1)n group bonded to a surface of the pigment particle, wherein R represents an alkylene group or an aromatic ring; M1 represents a hydrogen atom, an alkali metal, an ammonium or an organic ammonium; and n is an integer of 2 or more.
摘要翻译:本发明的目的是提供一种水性油墨,其能够形成比通过使用含有常规自分散颜料和盐的水性油墨形成的图像更好的耐渗透性,特性质量和印刷密度的图像。 所述水性油墨包括自分散颜料和盐,其中所述自分散颜料是含有颜料颗粒的颜料,所述颜料颗粒具有-R-(COOM)1 SUB> n SUB >基团键合到颜料颗粒的表面,其中R表示亚烷基或芳环; M 1表示氢原子,碱金属,铵或有机铵; n为2以上的整数。
摘要:
Various modified pigment products are described which are preferably capable of being dispersed in a variety of materials such as coatings, inks, toners, films, plastics, polymers, elastomers, and the like. The modified pigments are pigments having attached groups, such as polymeric groups, onto the pigment by means other than adsorption. A modified pigment product is described comprising a pigment having attached at least one group comprising the formula: —X—[NIon]p,R wherein X comprises an aromatic group or an alkyl group, NIon comprises at least one type of non-ionic group, R represents hydrogen or comprises an aromatic group or an alkyl group, and p represents an integer of from 1 to 500. Modified pigment products are also described comprising a pigment having attached at least one alkylene oxide group or at least one polymeric group. In addition, other types of modified pigment products are described as well as their incorporation into inks, coatings, toners, films, plastics, polymers, elastomers, and the like. Methods of making the modified pigment products are also described.