Produits chimiques de spécialité

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.

ROSKYDAL® K 14 M is a binder for highly filled knifing fillers, putties for marble and stone and adhesives. Because of the high reactivity of ROSKYDAL® K 14 M, fillers based on this product cure fully in a very short time, even when applied in thick coats. They are used in applications requiring hard adhesives and fillers. A particular advantage of ROSKYDAL® K 14 M is the pale colour of the polymer formed. This makes it ideal for use in the formulation of stoppers for marble and stone, especially on pale marble and if early sanding and polishing is required. ROSKYDAL® K 14 M can be combined with other ROSKYDAL® K grades (K 30, K 36, K 45, K 60) to increase their hardness. improves the adhesion to the substrate. The more spherical extenders such as dolomite, chalk and barytes ensure dense packing.

ROSKYDAL K 65 is a binder for highly filled, coarse and fine knifing fillers for use on metal, wood and mineral substrates. Fillers based on ROSKYDAL K 65 cure fully when applied in both thin and thick coats. They can be made harder by the addition of, for example, ROSKYDAL K 14 M or ROSKYDAL K 36. Formulation Combinations of talc, dolomite/calcite and baryteswith lowiron content have proved suitable as extenders, with talc as the main component because it improves the adhesion to the substrate.

ROSKYDAL 500 A is a formulation of clear and pigmented, wax-free coatings for wood and furniture, high-gloss to matt, with good chemical resistance and very good flow properties and scratch resistance. Also in the formulation of spray and curtain-coating fillers for wood, metal and plastic. Coatings based on ROSKYDAL 500 A cure to formhard, scratch-resistant films. The addition of ROSKYDAL 550 (up to 50 %, calculated on the resin supply form) or E 70 (up to 30 %) improves the flexibility and polishability of the films without reducing the scratch resistance. Fillers and putties can be flexibilized with ROSKYDAL E 65 or E 70. The use of ROSKYDAL E 65 is particularly recommended because of its air-drying properties. As is commonwith unsaturated polyester systems, coatings based on ROSKYDAL 500 A are cured with a cobalt/hydroperoxide combination. The cobalt not only splits the peroxide into free radicals but also promotes surface drying. It thus influences two independent but simultaneous reactions. As the breakdown of the hydroperoxide accelerates at higher temperatures, even without the addition of cobalt, it may be necessary to reduce the amount of cobalt added. Otherwise the surface drying will be much quicker than the polymerization of the film, which may result in surface defects. The cobalt/hydroperoxide ratio must be optimized for the formulation, film thickness, application method and drying conditions selected. The standard addition at room temperature is 0.02 - 0.05 % cobalt metal and 1 – 3 %