Specialty Chemicals

SETATHANE D E 2767 is applied in combination with aromatic polyisocyanates based on diphenylmethane diisocyanate as binder for solvent-free two-component polyurethane coatings with high chemical resistance for concrete and other porous substrates, fillers, sealing compounds and synthetic resin mortars. SETATHANE D E 2767 is suitable for the formulation of coatings, mortars and sealers with high chemical resistance. Coatings formulated with SETATHANE D E 2767 generally exhibit outstanding resistance to organic and inorganic acids, alkalis and solvents. Over-cross linking of 50 % and more is usual. This allows a wide-ranging variation in flow and chemical resistance. To ensure blister-free curing, SETATHANE D E 2767 requires the addition of hydrated lime in accordance with DIN EN 12 518 (or cement if necessary) as a CO2 scavenger. In certain cases where the film thickness is less than 100 μm, there is no need to add hydrated lime.

SETATHANE D 1145 is applied in the formulation of hard and tough coatings and synthetic resin mortars.It is used in combination with other polyols such as SETATHANE D 1150 and crosslinked with Desmodur VL, SETATHANE D 1145 is suitable for use in the formulation of two-component coatings. The main applications are in the construction industry. Curing yields hard to tough but flexible films which are resistant to abrasion and chemicals. In combination with other polyols such as SETATHANE D 1150 and crosslinked with Desmodur VL, SETATHANE D 1145 is suitable for use in the formulation of two-component coatings. The main applications are in the construction industry. Curing yields hard to tough but flexible films which are resistant to abrasion and chemicals.

VIAPAL UP 797/59 is a produt with excellent chemical resistance and high heat deflection temperature. It is used for fabrication of equipment and structures in the chemical industry.

ROSKYDAL 502 BA is a formulation of clear and pigmented, monomer-free coatings for applying thin finishes to wood and furniture. The coatings can be cured by conventional methods or UV radiation and have good resistance to solvents and other chemicals and yellowing in both light and dark conditions. ROSKYDAL 502 BA permits the formulation of monomer-free coatings for applying thin finishes to wood and furniture. The application rate should not exceed 100 g/m2. The coatings can be cured by conventional methods or, after addition of photo-initiators, by UV radiation. The resultant films are hard and resistant to scratching, to solvents and other chemicals and to yellowing in both light and dark conditions. The requirements of, for example, DIN 68 861, Group B, are thus satisfied. The drying of the coatings can be accelerated by the addition of nitrocellulose. Inadequate compatibility with cellulose acetobutyrate results in clouding of the film. Coatings based on ROSKYDAL 502 BA can be applied using conventional methods, e.g. spraying, roller coating or curtain coating. Conventional curing: curing by conventional methods requires the addition of a cobalt accelerator (e.g. cobalt octoate) and peroxide. For curing at room temperature or temperatures up to approx. 60 °C we recommend the use of cyclohexanone peroxide. Tertiary butyl peroctoate should be used at higher curing temperatures because it results in a longer pot life. Even small amounts of styrenewill significantly reduce the pot life of a coating containing cobalt/peroxide.