Degussa Aktiengesellschaft

Deutsche Gold- Und Silber-scheideanstalt Vormals Roessler

Degussa Atiengesellschaft

Karl-Hans Muller

Walter Barthel

Matthias Neumuller

Gunther Turk

Roland Tailfer

Manfred Diehl

Gunter Turk

Manfred Ettlinger

Hans R Muhlemann

Edgar Simon

Rolf Oelmuller

Bitumen granulate containing from 0.5 to 15% by weight, preferably from 6.1 to 15% by weight, of a powdering and separating agent such as, for example, synthetic silica or carbon black is produced by atomizing hot, liquid bitumen in a spray mixer and at the same time introducing the powdering and separating agent into the spray mixer by way of the stream of cold air.

Granular bitumen coated with precipitated silica

The toothpaste for preventative oral hygiene contains a mixture of synthetically prepared precipitated silicic acid and perlite in addition to a solvent as cleaning body. A mixture consisting of glycerol (86%) and water is used as solvent.

Dentrifice

A dental-care composition having improved shelf life in respect of rheology and abrasiveness, which as a novel feature, contains, as a cleansing agent, a bifunctional (thickening and abrasive) precipitated silica characterized by the following physico-chemical properties:

Dental-care composition using precipitated silica

A dental-care composition having improved shelf life in respect of rheology and abrasiveness, which, as a novel feature, contains, as a cleansing agent, a bifunctional (thickening and abrasive) precipitated silica characterized by the following physico-chemical properties:

Transparent dental care composition

Opaque dental-care composition

Dental-care composition

A laundry softener concentrate comprises one or more laundry softeners, synthetic silicon dioxide, and optionally one or more solubilizers. The laundry softener concentrate is in the form of a flowable powder.

Laundry softener concentrate

There is provided a process for improving mineral asphaltic coatings for streets and roadways comprising preparing a mixture to be used as the base mineral asphalt coating material, homogeneously mixing in 0.1 to 10 weight % of silica which is either (1) a precipitated silica, (2) a precipitated and spray dried silica or (3) a pyrogenically produced silica and further working this mixture into a mineral asphalt coating for streets and roadways.

Process for improving the mineral asphalt coatings for streets and paths

Precipitated, jet ground silica with specific physical-chemical properties is mixed with silicone oil, homogenized and heated to produce an antifoam agent. This type of antifoam agent can be used in pharmacy, in producing foam stopping latex emulsion, in the food field, in washing formulations, in the textile industry as well as in the pigment and varnish industries.

Process for the production of sedimentation stable anti-foam agents

Powdery bitumen concentrates are prepared containing 10 to 85 weight %, preferably 40 to 80 weight %, of synthetic silica. The concentrate is used in asphalt mixtures for building roads to give high stiffening value thereto.

Pulverulent bitumen concentrate and its use

A mastic asphalt composition is disclosed which comprises, in addition to the mastic asphalt, 0.2 to 5 wt. % of a crystalline, powdered, synthetic zeolite or zeolite mixture. In addition, the mastic asphalt composition may further contain precipitated silica.

Mastic asphalt composition

Mastic asphalt mixture for road, building and industrial construction, which contains 0.1 to 2% by weight of silica. For example, a precipitated silica, a precipitated and spray dried, or a pyrogenously produced silica may be used as a synthetic silicic acid. The content of synthetic silica produces an essentially higher degree of hardness in the finished mastic asphalt layer.

Mastic asphalt mixture

There is produced a hydrophobic mixture for RTV and LTV silicone rubber by applying a hydrophobizing agent to a precipitated silica, homogeneously mixing this powdery concentrate into a pyrogenically produced silica, tempering the mixture and mechanically compacting. The hydrophobic filler mixture obtained in the untempered condition consists of:

Hydrophobic filler mixtures, process for its production and use

A shoe cream polish composition which contains in addition to waxes, oils and the like, a finely divided pyrogenic, hydrophobic silicic acid.

Growing community of inventors

Bruchkobel, Germany

Karl-Hans Muller