Hoechst Aktiengesellschaft

Clariant Corporation

Joachim Weide

Hans Joachim Metz

Reinhold Deubel

Erwin Dietz

Heinz Uhrig

Helmut Diery

Ruediger Jung

Martin Hille

Rainer Winter

Rudiger Jung

Wolfgang Wagemann

Erich Hoffmann

Thomas Wallach

R Udiger Jung

Flow-enhanced pigment preparation for offset printing

Pigment preparations based on monoazo pigments

An ecologically and economically advantageous process for preparing a disazo pigment of the formula (I) or a mixture of said disazo pigments ##STR1## where D.sup.1 and D.sup.2 are identical or different and each is unsubstituted phenyl, phenyl with from 1 to 5 substituents, unsubstituted naphthyl, naphthyl with from 1 to 3 substituents, unsubstituted anthraquinonyl, anthraquinonyl with from 1 to 3 substituents, or a radical of a fused aromatic heterocycle which contains from 1 to 3 identical or different heteroatoms from nitrogen or oxygen and sulfur and is unsubstituted or has from 1 to 3 substituents, R.sup.1 and R.sup.2 are identical or different and each is hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.5 -alkoxycarbonyl, nitro, cyano, phenoxy or trifluoromethyl, by azo coupling, comprises

Single-step process for the preparation of bis-(acetoacetylamino)

Disazo compounds of the formula (I) ##STR1## in which R.sup.1 and R.sup.2 are identical or different and are a hydrogen or halogen atom or a C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.5 -alkoxycarbonyl, nitro, cyano or trifluoromethyl group and the rings A, B, C and D independently of one another are unsubstituted or contain one or more substituents from the group comprising C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, carboxyl, C.sub.1 -C.sub.5 -carbalkoxy, C.sub.2 -C.sub.5 -alkanoyl, benzoyl, acyloxy, acylamino, unsubstituted or N-mono- or N,N-disubstituted carbamoyl or unsubstituted or N-mono- or N,N-disubstituted sulfamoyl, possible substituents being C.sub.1 -C.sub.4 -alkyl or mono- to trisubstituted phenyl; C.sub.1 -C.sub.4 -alkylamino or phenylamino; C.sub.1 -C.sub.4 -alkylsulfonyl or phenylsulfonyl; phenylsulfonylamino; cyano; halogen, nitro and trifluoromethyl, are suitable for coloring naturally occurring and synthetic materials, for formulating enamels, emulsion paints and printing inks, for spin coloring artificial silk and for coloring paper.

Water-insoluble azo colorants having two azo groups and a 1,4-bis

According to the invention, oxyalkylates of aliphatic or cyclic, primarily primary diamines or polyamines, or block polymers (having recurring structural units of the abovementioned oxyalkylate type) produced by prior linking of such oxyalkylates with dicarboxylic acids, are converted into novel substances which are suitable for a very wide variety of areas of application in the field of interface-active agents and can be employed, for example, in the preparation of azo pigments to improve the coloristic properties, by esterification of the terminal hydroxyl group in these aminoxyalkylates using fatty acids or aromatic carboxylic acids and/or resin acids, and, if appropriate, subsequent reaction of free hydroxyl groups which are still present with dicarboxylic acids and sulfite to form the corresponding monoester (containing anionic radicals).

Modified block polymers, their preparation and their use

Mono- and disazo pigments from the group of the acetoacetarylide, pyrazolone, .beta.-naphthol, 2-hydroxy-3-naphthanilide, 2-hydroxynaphthoic acid, benzimidazolone, diaryl yellow, diarylpyrazolone and disazobenzimidazolone pigments in whose preparation a nonionic surfactant which has a cloud point in aqueous solution was added at the latest immediately prior to the isolation, excluding pigments which have a bis(acetoacetylamino)benzene coupling component, are useful for pigmenting solvent-containing packaging intaglio and flexographic printing inks.

Use of azo pigment preparations for solvent-containing packaging

Bisphenol derivatives, process for their manufacture, and their use as

According to the invention, addition of one or more surfactants having a cloud point in aqueous solution to an aqueous suspension of a solid gives after the isolation of the solid at a temperature above the cloud point aqueous press cakes containing a large amount of this solid. The direct processing of press cakes as obtained for example after the synthesis and isolation of dyes or pigments to give practical aqueous pastes or dispersions requires a minimum solids content in the press cakes. The minimum content is frequently not obtained when conventional methods of isolation are used, so that it is necessary to proceed via the indirect route of drying to obtain the powders and redispersing the powders. By using the process according to the invention it is possible to cut out the costly indirect route or, if desired, to reduce the expense of drying to obtain powders by an appreciable margin.

Process for preparing highly concentrated aqueous press cakes of solids

According to the invention, addition of one or more surfactants having a cloud point in aqueous solution to an aqueous suspension of an azo disperse dye gives after the isolation of the dye at a temperature above the cloud point aqueous press cakes containing a large amount of this dye. The direct processing of press cakes as obtained for example after the synthesis and isolation of azo disperse dyes to practical dispersions for use requires a minimum dye content in the press cakes. The minimum content is frequently not obtained when conventional methods of isolation are used, so that it is necessary to proceed via the indirect route of drying to obtain powders and redispersing the powders. By using the process according to the invention it is possible to cut out the costly indirect route or, if desired, to reduce the expense of drying to obtain powders by an appreciable margin.

Process for preparing a highly concentrated aqueous press cakes of an

Compounds of the formula ##STR1## in which Y denotes an aryloxy group, which is possibly substituted, R.sub.4 and R.sub.5 denote hydrogen or C.sub.1 -C.sub.4 -alkyl, m denotes 0 to 12 and Z denotes polyalkylene glycol radicals having about 8 to about 200 ethylene glycol units --(CH.sub.2 --CH.sub.2 O)-- or up to about 200 ethylene glycol units and alkylene glycol units of the formula ##STR2## in which R.sub.6 is methyl or ethyl and in which at least 8 ethylene glycol units are present. These compounds are prepared by initially reacting epoxide with a phenol or naphthol and subsequently oxalkylating. The reaction products are used as dispersants for the preparation of aqueous pigment dispersions.

Polyether dispersants

The invention relates to novolak oxyalkylate mixed esters which, on the one hand, contain benzoyl and/or naphthoyl radicals and, on the other hand, contain maleic acid and/or sulfosuccinic acid half-ester groups. They are obtained by reacting novolak oxyalkylates with benzoic acid and/or naphthoic acid or with its anhydride or chloride on the one hand and maleic anhydride on the other hand and, if appropriate, reacting the maleic acid half-ester groups with sulfites to give sulfosuccinic acid half-ester groups. These compounds are highly suitable for use as dispersing agents for the preparation of low-foam dispersions of pigments, dyestuffs and other agents and as emulsifying, leveling and dyeing auxiliaries.

Anionic compounds based on modified novolak oxyalkylates, their

Polyether polyamines of the formula 1 ##STR1## in which R.sub.1 and R.sub.2 are identical or different and denote C.sub.8 -C.sub.30 -alkyl, -2-hydroxyalkyl or -alkenyl or C.sub.8 -C.sub.24 -alkoxypropyl, m and n are 2 or 3, R.sub.3 is hydrogen or methyl and the sum of o+p+q+r is an integer from 4 to 600, process for their manufacture and their use as dispersing agents, corrosion inhibitors, demulsifiers and acid retarders.

Growing community of inventors

Kelkheim, Germany

Joachim Weide