Skw Bauchemie Gmbh

Construction Research & Technology Gmbh

Skw Trostberg Aktiengesellschaft

Herbert Winkelmann

Alfred Kern

Alois Maier

Franz Wolfertstetter

Josef Weichmann

Stefan Ingrisch

Norbert Steidl

Thomas Pfeuffer

Werner Temme

Ralph Bergs

Andrea Gantner, Legal Representative

A description is given of azetidine derivatives and methods for producing them, and of their use as a latent curing component for resins having functional groups which are reactive toward amino groups. The particular advantages of the curing component proposed in accordance with the invention, such as effective producibility, high environmental friendliness, and excellent storage stability of the resin/curing agent mixtures, make these azetidine derivatives outstandingly suitable for one-component, moisture-hardening polymer compositions, which are of special interest in particular for the production of (floor) coatings, sealants, and adhesives.

Azetidine derivatives, method for producing said derivatives and use thereof

Solvent-free polyrethane-polymer-hybrid-dispersion and use thereof

Solvent-free polyurethane dispersion

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

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

Growing community of inventors

Garching, Germany

Herbert Winkelmann