Clariant Corporation

Hoechst Aktiengesellschaft

Clariant Produkte (Deutschland) Gmbh

Clariant Finance (Bvi) Limited

Clariant International Ltd

Hoechst Celanese Corporation

Universitât Bern

Universiteit Utrecht Holding B.v.

Optical Additives Gmbh

Clariant Produkte Gmbh

Hans Joachim Metz

Joachim Weide

Joachim Weber

Andreas Stohr

Hans-Tobias Macholdt

Martin Ulrich Schmidt

Carsten Plueg

Klaus Warning

Felix Wendelin Grimm

Matthias Ganschow

Rudiger Baur

Andreas Harz

Andreas Wacker

Ruediger Jung

Karl-Heinz Schweikart

Heinfred Ohleier

Martin Alexander Winter

Chandrashekhar D Patil

Sunil D Deval

Uday T Nabar

Frank Morgenroth

Theodor Papenfuhs

Ernst I Leupold

Richard Vicari

Olan S Fruchey

Dirk Leinweber

George Kvakovszky

Andreas Voigt

Heinz Litterer

Katharina Landfester

Gion Calzaferri

Franz Xaver Scherl

Dominique Pflieger

Ulrike Rohr

Rainer Winter

Klaus Brychcy

Axel Schoenfeld

Rudiger Jung

Andreas Kunzmann

Frank P Sistig

Andreas Pfrengle

Thomas Hundsdorf

Jan Möschwitzer

Pieter Cornelis Antonius Bruijnincx

Lutz Kröhne

Anton Kaiser

Heino Heckmann

Gerald Mehltretter

André Devaux

R Udiger Jung

Karl H Schenk

Angelika Heinrichs

Bert Marc Weckhuysen

Fiona Kirby

Thomas Wallach

Lars Daehne

Lutz Kroehne

Jan Moeschwitzer

Stephane Suarez

Lars Dähne

Carsten Plüg

Sotiris E Prof Pratsinis

The invention relates to a method for preparing polyglycerol, comprising &#x2014;providing a catalyst salt on a support, the catalyst salt having catalytic activity with respect to an etherification reaction of a polyol selected from the group of glycerol and oligoglycerols, &#x2014;contacting the catalyst salt on the support with a fluid phase comprising a polyol selected from the group of glycerol and oligoglycerols, &#x2014;and subjecting the polyol in the fluid phase to an etherification reaction in the presence of the catalyst salt, thereby forming the polyglycerol.

Preparation of polyglycerols

The invention relates to a method for production of an aqueous dispersion of polymer-encapsulated pigments characterized in that (a) an aqueous pigment dispersion, containing at least one organic pigment (P) at least one surfactant (T), and water is prepared,(b) a monomer miniemulsion stabilized by a hydrophobic organic compound with a water solubility at 20&#xb0; C. of not more than 5&#xd7;10g/l, is prepared from a polymerizable monomer (M) and at least one surfactant (T), in water, (c) a monomer pigment emulsion is prepared, whereby the aqueous pigment dispersion from (a) and the monomer miniemulsion from (b) are mixed and homogenized, and (d) the pigment-containing monomer miniemulsion from (c) is polymerized in the presence of a polymerization initiator and/or by heat, whereupon an encapsulation of the pigment with the polymer thus formed occurs.

Method for production of polymer-encapsulated pigments

The invention concerns a process for encapsulating pigment particles, which comprises

Polyelectrolyte-encapsulated pigments

The invention is about the preparation of novel highly transparent zeolite-doped polymer and zeolites monolayers. External coating of the zeolite crystals by covalently linked functionalized alkoxysilane derivatives allows for an efficient dispersion of the nano zeolite particles into an organic liquid monomer; the following co-polymerisation process leads to a hard, insoluble and transparent material containing said zeolites. Optical properties such as colour, refractive index, Abbe number or photochromism can be fine tuned by simply changing zeolite loading, while transparency is maintained.

Transparent zeolite-polymer hybrid material with tunable properties

A process for warpage-free pigmentation of a plastic pigmented by a phthalocyanine pigment which was heated to not less than 80&#xb0; C. as a suspension in a organic solvent in the presence of a carboxylic acid containing 2, 3 or 4 carboxyl groups or a salt of such a carboxylic acid.

Method for pigmenting semi-crystalline plastics with phthalocyanine pigments in a non-warping manner

Dispersible pigment granules are produced by mixing an aqueous suspension of an organic pigment with an aqueous emulsion of a wax-like additive. The aqueous emulsion is then allowed to coagulate and the resulting aqueous dispersion is spray dried.

Method for the production of pigment granules

A method for distortion-free pigmentation of partly-crystalline plastics, characterized in that a phthalocyanine pigment is used which has been heated to a temperature of at least 80&#xb0; C. as a suspension in an acid-free organic medium in the presence of a base.

Method for distortion-free pigmentation of partly-crystalline plastics with phthalocyanine pigments

The invention relates to a compound of general formula (I) in which C represents an alicyclic or heterocyclic group having Csymmetry, and B represents ortho-C-C-arylene. The invention also relates to a method for producing this compound and to the use thereof as a coloring agent for coloring or pigmenting organic or inorganic high-molecular or low-molecular, particularly high-molecular, organic materials. 

&#x3b2;-Isoindigo coloring agent

This invention relates to monoazo, disazo and trisazo colorants of the formula (I) where

Methanesulfonamide azo dyes

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

Diketopyrrolopyrroles of the formula (I):wherein

Diketopyrrolopyrrole pigments

The invention relates to novel monoazo compounds of formula (1), wherein Rre resents H, Cl or CH; Rrepresents H or Cl; Mrepresents Mg, Mnor Sr; Y=represents COOor SO; Y=SO; Y=Y=Y=H; or Y=SO, Y=Y=Y=H; or Y=SO, Y=Y=Y=H; or Y=SO, Y=Y=Y=H. The compounds of formula (1) are characterized by high intensity and light-fastness.

Pigmented 1-naphtholsulphonic acid-based monoazo pigments

The invention relates to novel monoazo compounds of formula (1), wherein R represents H or Cl, Mrepresents Caor SRand Y=H and Y=SOor Y=SOand Y=H. The compounds of formula (1) are characterized by their high drying power and high light-fastness.

Laked monoazo pigments based on naphtholsulfonic acids

This invention relates to azo pigments of general formula (I) wherein D represents the radical of a diazo component; Rand Rare the same or different and represent hydrogen, a C-Calkyl radical which is optionally substituted by hydroxy, amino, halogen or methoxy, or a (C-C) aryl radical which is optionally substituted by one, two or three substituents from the group C-Calkyl, C-Calkoxy, F, Cl, Br, CF, NO, OH, CONH, CONH(C-Calkyl), CON(C-Calkyl), COO(C-Calkyl), SONH, SONH(C-Calkyl) and SON(C-Calkyl), provided that Rand Rdo not simultaneously represent hydrogen; Rrepresents hydrogen, C-Calkyl, halogen, trifluoromethyl, C-Calkoxy, NO, or CN; and n represents 1, 2 or 3

Azo pigments

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

Growing community of inventors

Darmstadt, Germany

Hans Joachim Metz