Skw Trostberg Aktiengesellschaft

Skw Bauchemie Gmbh

Construction Research & Technology Gmbh

Skw Polymers Gmbh

Degussa Construction Chemicals Gmbh

Swk Bauchemie Gmbh

Skw Trostberg Aktiengescellchaft

Pci Augsburg Gmbh

Josef Weichmann

Alfred Kern

Gerhard Albrecht

Franz Wolfertstetter

Herbert Winkelmann

Manfred Bichler

Alois Maier

Konrad Wutz

Christian Huber

Manfred Schuhbeck

Stefan Ingrisch

Hubert Leitner

Hans-Gunter Rosenbauer

Aloisia Stadler

Boris Breitscheidel

Johann Plank

Alois Aignesberger

Werner Stohr

Volker Schwarz

Klaus-Dieter Hoetzl

Johann Penkner

Ludwig Eibl

Klaus Hoetzl

Jörg Zimmermann

Hilmar Kusmierz

Sonja Przybylla

Mathias Fründt

The use of cyclohexanepolycarboxylic acid derivatives for reducing or minimizing the dust emission when handling pulverulent construction chemistry products, processes for the preparation of the pulverulent construction chemistry products and hydraulically setting materials containing the cyclohexanepolycarboxylic acid derivatives according to the invention are proposed.

Use of cyclohexane polycarboxylic acid derivatives for removing dust from chemical construction products

Solvent-free polyurethane dispersion

Powdery polyether carboxylate-based polymeric compositions

Stabilized, water-soluble polymer powders based on polyoxyalkylene glycol carboxylates are described, wherein the powders comprise from 0.01 to 10% by weight of a stabilizer selected from the group consisting of phenols, amines, phosphites, thioethers, and also thioacids, and where the stabilizer was added in liquid or dissolved form to the aqueous polymer solution prior to its conversion into the powder form. The polymer powders thus protected against autoignition and oxidative degradation have unexpectedly high thermooxidative stability, even on exposure to high temperatures and oxidizing action (air, oxygen).

Stabilized water-soluble polymer powders on the basis of polyoxy alkylene glycol carboxylates and method for producing same

Hybrid polyurethane-polymer dispersion with high film hardness, method for the production and the use thereof

In the proposed condensation product based on amino-s-triazines with at least two amino groups, formaldehyde and sulphite, the molar ratio of amino-s-triazine, formaldehyde and sulphite is 1:2.5-6.0:1.51-2.0 and the formiate content is less than 0.3 wt %. The condensation product is obtained by a) heating amino-s-triazine, formaldehyde and a sulphite in the molar ratio 1:2.5-6.0:1.51-2.0 in an aqueous solution at a temperature of 60-90&deg; C. and a pH level of between 9.0 and 13.0 until the sulphite can no longer be detected; b) continuing the condensation at a pH level of between 3.0 and 6.5 and a temperature of 60-80&deg; C. until the condensation product has a viscosity of 5-50 mm/s at 80&deg; C.; and c) adjusting the pH level of the condensation product to 7.5-12.0 or carrying out thermal secondary treatment at a pH level of >10.0 and a temperature of 60-100&deg; C. The product can be used as an additive for inorganic binders such as cement.

Condensation products based on amino-s-triazines and the use thereof

A self-crosslinking polyurethane polymer hybrid dispersion based on oxidatively drying polyols having a high degree of film hardness is described, which is characterized in that it contains the reaction components claimed. The advantages of the polyurethane polymer hybrid dispersion according to the invention, such as a high degree of hardness in combination with high flexibility of the tear-free films, good resistance to chemicals, high stability of the dispersions in a wide pH range, good stability in the freezing and thawing cycle and the use of economical raw materials, are achieved in a simplified synthesis pathway wityout subsequent chemical crosslinking, and simultaneously with a low content of organic solvent (&lE;4% by weight) and good film formation at temperatures of &gE;&plus;10&deg; C.

Self-crosslinking polyurethane polymer hybrid dispersion

Copolymers based on unsaturated dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers, unsaturated dicarboximides and/or -amides and vinyl monomers are described, as also their use as additives for hydraulic binders, especially cement. The copolymers also have an excellent plasticizing effect&mdash;even if they are added in large quantities&mdash;when used in concrete mixtures with an extremely low water content, and they do not retard the setting process.

Copolymers based on unsaturated dicarboxylic acid derivatives and oxyalkylene glycol alkenyl ethers

Water-soluble or water-swellable copolymers containing sulfonic groups and based on (meth)acrylamide alkyl sulfonic acids and (meth)acrylamide or N-vinyl compounds are described, as well as their use as additives in aqueous building material mixes or for water-based painting and coating systems. The copolymers of the invention, even when used in relatively small quantities, serve as very effective and highly compatible water retention agents in such building material mixes and surface-coating systems.

Water-soluble or water-swellable copolymers containing sulfonic groups and methods of preparation

Flow improving agents for binder suspensions containing cement are described, which consist of:

Flow improving agents for binder suspensions containing cement

The invention concerns redispersible polymer powders characterized by a proportion of 3 to 30% by wt relative to the polymer weight of condensation products of amino-s-triazine/formaldehyde/sulfite with molar ratios of amino-s-triazine to formaldehyde to sulfite of 1/1.3-6.0/0.3-1.5 and with a low free formaldehyde content. These condensation products of amino-s-triazine/formaldehyde/sulfite are exceedingly effective protective colloids when spray-drying polymer dispersions and can be combined in problem-free manner with casein.

Redispersible polymer powders, method for their preparation and

Water-soluble formaldehyde-free polycondensation products based on amino-s-triazines with at least two amino groups and glyoxylic acid, which contain as further component at least one amino compound and where the molar ratio of amino-s-triazine to glyoxylic acid to amino compound is 1:0.5 to 6.0:0.1 to 2.0. These polycondensation products are excellently suited as additives for aqueous suspensions of inorganic binders, especially cement, lime and gypsum. Building material mixtures which contain these polycondensation products remain workable for a considerably longer time and, in spite of this, also set more quickly.

Water-soluble formaldehyde-free polycondensation products based on

Disclosed is a co-polymer based on oxyalkyleneglycol alkenyl ethers and unsaturated dicarboxylic acid derivatives, as well as vinylic polyalkyleneglycol, polysiloxane or ester compounds. These co-polymers can be used as additives for hydraulic binding agents, especially cement. The co-polymers of the invention have an excellent and long-lasting liquefying action without introducing large amounts of air pores into the binding agent mixtures, thereby preventing the loss of strength and stability of the hardened building materials.

Co-polymers based on oxyalkyleneglycol alkenyl ethers and unsaturated

Disclosed is a highly viscous condensation product containing sulfonic acid groups based on amino-s-triazines with at least 2 amino groups and formaldehyde which has a viscosity of 500 to 100,000 cp at 20.degree. C. and a pH value of 8.0 to 13.0 as an aqueous solution with a solids content of 20% by weight. The product is obtainable by (a) condensation of amino-s-triazine, formaldehyde and sulfite in a molar ratio of 1:1.9 to 2.9:0.7 to 1.3 in aqueous solution at a pH value of 9.0 to 12.0 and a temperature of 50.degree. to 90.degree. C. until the sulfite is no longer detectable, and (b) subsequent further condensation at a pH value of 2.0 to 5.0 and a temperature of 50.degree. to 100.degree. C. until the viscosity exhibits the desired value.

Highly viscous condensation products containing sulfonic acid groups

Disclosed is a soluble polycondensation product based on amino-s-triazines with at least two amino groups and forma ehyde, a process for making the product and the use thereof as an additive for an aqueous binding agent suspension.

Water-soluble polycondensation products based on amino-s-triazines and

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Pleiskirchen, Germany

Josef Weichmann