Hoechst Aktiengesellschaft

Clariant Corporation

Rohm Gmbh

Btg Ecl&eacute;pens S.a.

Guido Dessauer

Ute Horn

Helmut Berenbold

Gerhard Crass

Klaus Kuber

The invention relates to a method and device for improving the coating surface of a coating mass deposited on or applied to a paper web ( ) by a film press. An anionic aqueous coating mass or an anionic paper web are provided with an opposite electric charge by an electric charger, whereby the applied coating is attracted to the oppositely charged paper ( ) in a nip exit area of the film press. The electric charger is, for example, a corona generator ( ) or a direct current voltage source ( ) that is connected to the paper ( ) and coating slip by electrodes ( ).

Method and device for improving the coating surface of strips of paper

Fuel/water emulsions

The invention relates to the use of water-containing organophilic phyllosilicates obtained by the reaction of a phyllosilicate, which is completely delaminated colloidally in water and is capable of cation exchange, with an organic onium salt in aqueous suspension and subsequent mechanical removal of the water, without drying by heating, as a rheological additive in organic media. The water-containing organophilic phyllosilicates are particularly suitable for coating paper.

Water-containing organophilic phyllosilicates

The present invention relates to a fine aqueous dispersion of an organophilic sheet silicate, consisting essentially of a sheet silicate capable of cation exchange and a quaternary organic onium salt reacted therewith, which dispersion comprises from 3 to 30% by weight, based on the organophilic sheet silicate, of a water-soluble, natural polymer and/or a derivative thereof.

Fine aqueous dispersion of an organophilic sheet silicate

Water-containing organophilic phylloisilicates

The invention relates to an aqueous fine dispersion of an organophilic sheet silicate which is composed of a sheet silicate which is capable of cation exchange and of a quaternary organic onium salt reacted therewith, and contains 3 to 30% by weight, based on the organophilic sheet silicate, of polyvinyl alcohol. This fine dispersion is suitable as coating composition for paper and board and as lubricant additive for conventional coating compositions.

Aqueous fine dispersion of an organophilic sheet silicate

Process for the treatment of a pigment suspended in water and method of

The invention relates to a process for the production of an agent suitable for the paper and board industry and improving the printability of paper and board, wherein an aqueous colloidal system is prepared from at least one pigment and at least one water-soluble or water-swellable hydrogel containing anionic groups, said system is subjected to coacervation by means of a quarternary organic ammonium salt and, if appropriate, the product obtained in the coacervation is concentrated by sedimentation, centrifuging and/or filter-pressing, to the agent produced and to the use thereof in the paper and board industry.

Process for the production of a pigment-based agent suitable for the

A method for treating paper or other fibrous materials to improve the holdout characteristics of printing inks, lacquers and coating compositions. The method involves the application of an organophilic complex of

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Tutzing, Germany

Guido Dessauer