Clariant Corporation

Clariant Produkte (Deutschland) Gmbh

Clariant Produkte Gmbh

Andreas Harz

Hans-Tobias Macholdt

Heidemarie Menzel

Martin Alexander Winter

Hans Joachim Metz

Ruediger Baur

Josef Geisenberger

Eduard Michel

Andreas Pfrengle

Michael Mueller

Leonhard Unverdorben

Uwe Nickel

Lothar Wihan

Gunnar Tilch

Olaf Müller

The invention relates to an aqueous pigment preparation containing an organic and/or inorganic pigment dispersed in an acrylate resin solution and a dispersion agent. The preparation is characterized in that the acrylate resin is a copolymer consisting essentially of between 50 and 80 mol % of monoalkenyl aromatic compounds and between 20 and 50 mol % of acrylates, and has an average molar mass Mof between 1,000 and 50,000 g/mol, and in that the dispersion agent is a compound of formula (I): R&#x2014;O&#x2014;(CH-CH&#x2014;O)&#x2014;CH&#x2014;COOM, wherein R is a C-Calkyl radical or a C-Calkenyl radical, m is a number between 1 and 15, and M is a monovalent cation.

Pigments dispersions based on water and acrylate

The invention relates to a pigment dispersion consisting essentially of a) at least one organic or inorganic pigment or a combination of the same, b) an alpha-methyl--omega-hydroxy-polyethylene glycol ether having an average molar mass of between 250 and 1000 g/mol, c) standard dispersing agents for producing aqueous pigment dispersions, d) water, and e) optionally other standard additives.

Water-based pigment dispersions, the production thereof and the use of the same

The invention relates to addition compounds of formula (1):in which: n is a number from 1 to 10; Rand Rare identical or different and are each a hydrogen atom or a saturated or unsaturated aliphatic radical having 1 to 4 carbon atoms; Rand Rare identical or different and are each a hydrogen atom or alkyl having 1 to 3 carbon atoms, and the bridge member (R+R) is in each case positioned ortho or meta in relation to the phenolic oxygen atom; Z represents a group &#x2014;CH&#x2014;CH&#x2014;, &#x2014;CH&#x2014;CH(CH)&#x2014;, &#x2014;CH(CH)&#x2014;CH&#x2014; or a combination thereof; s is number from 1 to 200; B represents hydrogen, &#x2014;CO&#x2014;CH&#x2550;CH&#x2014;COOM, &#x2014;COCH(SOM)CHCOOM, &#x2014;CO&#x2014;CH&#x2014;CH(SOM)&#x2014;COOM, &#x2014;SOM, &#x2014;SOM and/or &#x2014;POMM, whereby M is preferably a cation selected from the group Li, Na, K, NH, HO&#x2014;CH&#x2014;CH&#x2014;NH, (HO&#x2014;CH&#x2014;CH&#x2014;)NHor (HO&#x2014;CH&#x2014;CH&#x2014;)NH; and Y is a radical of an amine. The inventive addition compounds are used as dispersing agents of solids, for example, pigments, particularly in aqueous media.

Oxalkylation products produced from epoxides and amines and their use in pigment preparations

The invention relates to pigment preparations containing (a) at least one organic or inorganic pigment; (b) at least one cyclic imide of general formula (1) wherein R represents a linear-chain, branched or cyclic aliphatic radical having 10 to 30&mdash;preferably 12 to 25&mdash;carbon atoms, or an alkenyl radical having 10 to 30&mdash;preferably 12 to 25&mdash;carbon atoms, the aforementioned radicals being able to be substituted by at least one, e.g. 2, 3, 4 or 5, substituent from the group consisting of C -C -alkyl, C -C -alkoxy, C -C -aryl, hydroxy, carboxy, and sulfo, R , R , R and R are the same or different and represent hydrogen, C -C -alkyl, C -C -alkoxy, halogen, OR , NR R , &mdash;COOR , &mdash;CONR R , &mdash;NR &mdash;COR , SO NR R , &mdash;SO M, &mdash;NO , &mdash;CN or CF , R and R representing H or an alkyl radical having 1 to 10 C atoms and M representing an equivalent of a cation having a valency of 1 to 3; and (c) optionally further standard additives.

Phthalic acid imides as synergists for improving the properties of aqueous pigment preparations

The invention relates to an advantageous process for producing highly concentrated pigment presscakes which comprises concentrating a pigment suspension on a high-pressure filter press with a pressure of at least 16 bar to a pigment content of at least 50% by weight without adding nonionic surfactants which have a cloud point in water.

Process for producing highly concentrated pigment presscakes

The present invention relates to the use of a CuPc composition consisting essentially of CuPc, e.g., C.I. Pigment Blue 15:3, and a hydroxymethylphthalimido CuPc, as a colorant in electrophotographic toners and developers, powders and powder coating materials, electret materials, inkjet inks, and color filters, wherein the phthalocyanines have a particle morphology with an average length-to-width ratio of more than 2.5:1.

Use of improved cyan pigments in inkjet inks

Cyan pigments in electrophotographic toners and developers

Growing community of inventors

Schwalbach, Germany

Andreas Harz