Clariant Corporation

Other

Hoechst Aktiengesellschaft

Clariant Produkte (deutschland) Gmbh

Hoechstaktiengesellschaft

Josef Holz

Harald Bauer

Alexander Tapper

G&uuml;nther Schimmel

Gunther R Schimmel

Volker Thewes

Günther Schimmel

Guenther Schimmel

Horst Buhl

Christian Nitsch

Franz-Josef Dany

Richard Mertens

Juergen Haerer

Hans Haas

Thomas Mueller-Kirschbaum

Rainer Sorg

Peter Hardt

Josef Cremer

Lothar Westermann

Matthias Berghahn

Harald Volk

Thomas Müller

Peter Krings

Friedrich Schulte

Armelle Pelissou

The invention relates to a pulverulent laundry and cleaning detergents ingredient, to a process for its preparation and to its use.

Pulverulent laundry and cleaning detergent ingredient consisting of polycarbosylate and silicate

The invention relates to builder compositions with improved dissolution residue behavior, obtained by bringing

Builder composition prepared by heat-treating a crystalline layered Na silicate

The invention relates to builder compositions obtainable by bringing The invention also relates to laundry detergents, cleaners, compounds and water softeners comprising the builder compositions according to the invention.

Process of preparing a crystalline sodium silicate builder composition

The invention relates to a sparingly soluble alkali metal silicate which comprises alkali metal phyllosilicate in finely divided form in a non-phyllosilicatic alkali metal silicate environment of the formula x M O.y SiO , in which M is an alkali metal and y/x (1.9 to 500): 1; a process for its preparation and its use in detergents and cleaners.

Sparingly soluble alkali metal silicate

The invention relates to cogranulates comprising phyllosilicates and disintegrants, in particular cellulose, and to detergents and cleaners which comprise these cogranulates, preferably in tablet form.

Cogranulates comprising alkali metal phyllosilicates and disintegrants

A solid-form dishwasher detergent that contains a builder combination of conventional phosphates and crystalline layer silicates. Despite its phosphate content, the detergent provides improved protection to sensitive tableware, more particularly glasses and decorated tableware, and improved cleaning performance.

Solid machine dishwashing detergent with phosphate and crystalline lamellar silicates

The invention relates to a granular alkali metal phyllosilicate compound which comprises a crystalline alkali metal phyllosilicate, a colorant and an additive. The invention also relates to a process for its preparation, and to detergents and cleaners which comprise such a granular alkali metal phyllosilicate compound.

Granular alkali metal phyllosilicate compound

Crystalline alkali metal phyllosilicate

A granular surfactant composition comprising sodium silicate and linear alkylbenzenesulfonates, wherein the granular surfactant composition has a mean particle diameter of &gE;50 &mgr;m and an ff value of &gE;7; a process for the preparation of this granular surfactant composition, its use, and detergents and cleaners which comprise such granular surfactant composition and a process for the making of the same; and, where appropriate, the granular surfactant composition comprises other active ingredients and auxiliaries.

Granular surfactant composition of improved flowability compromising sodium silicate and linear alkylbenzenesulfonates

Finely divided crystalline sodium disilicate

Phyllosilicate-containing detergent and cleaner component

The invention relates to a process for the preparation of crystalline sodium silicates having a sheet structure and high .delta. phase content from water glass, which has been prepared hydrothermally, by dehydration of the water glass and subsequent crystallization at elevated temperature, which comprises treating the water glass at temperatures of from 50 to 140.degree. C. prior to dehydration.

Process for the preparation of crystalline sodium silicates

The invention relates to a process for the preparation of crystalline sodium silicates having a sheet structure and high .delta. phase content from water glass, which has been prepared predominantly hydrothermally, by dehydration of the water glass and subsequent crystallization at elevated temperature, wherein the water glass is a mixture of water glass prepared hydrothermally and tank furnace water glass, and also to its use.

In a continuous process for the preparation of phosphorous acid with simultaneous production of hydrochloric acid, a reaction zone is provided which is in open communication with a first scrubbing zone. A portion of the reaction product is recycled from the bottom of the reaction zone into the top of the scrubbing zone and phosphorous acid is removed from the circulation. Hydrogen chloride gas escaping from the top of the first scrubbing zone is brought into contact, in a cooled, second scrubbing zone, with an overstoichiometric amount of water. Hydrochloric acid is obtained which is passed as starting material into the reaction zone or into the top of the first scrubbing zone. The external cooling of the second scrubbing zone is controlled such that the temperature in the reaction zone is kept constant at a desired value between 90.degree. and 130.degree. C. without adding any external cooling or heating energy. Pure hydrochloric acid is recovered in an absorption zone.

Process for the preparation of phosphorous acid

For the preparation of dicalcium phosphate dihydrate stabilized with dimagnesium phosphate trihydrate and sodium pyrophosphate, an aqueous suspension of calcium carbonate is introduced into a reactor and recirculated by pumping through a high-speed mixer at 3,500 to 8,000 rpm which is in flow connection with the lower and upper portion of the reactor. Into the mixer an amount of phosphoric acid is introduced which is at least sufficient for the quantitative formation of dicalcium phosphate dihydrate and then an oxygen-containing magnesium compound is introduced into the reactor. Finally, lime milk is metered into the reactor up to a maximum pH of 6.9, before the sodium pyrophosphate is added to the reactor. The resulting suspension which has a stabilized dicalcium phosphate dihydrate content of 20 to 33% by weight is spray-dried. An apparatus for carrying out the process comprises besides a stirred reactor 1 two stirrer-equipped slurry containers (6, 7) and an intermediate container 16 from which a line 17 leads into a spray tower 18 where it ends above an atomizer wheel 19. The spray tower 18 is also the end point for hot air lines 20 and is in flow connection with a filter 22. The bottom of filter 22 is the starting point for a product line 24 via which highly adsorbent dicalcium phosphate dihydrate can be withdrawn.

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Erftstadt, Germany

Josef Holz