Specialty Chemicals

BECKOPOX EH 623W/80WA is a hardener for water-reducible coatings on mineral and metallic substrates, hydryaulic epoxy mortars (ECC). BECKOPOX EH 623W/80WA is used in combination with the water emulsifiable liquid resins Beckopox EP 122w, EP 147w and other liquid resins such as Beckopox EP 140, EP 116 and the solid resin dispersions Beckopox EP 384w and EP 385w (preferably in combination with liquid EP-resins) to produce water-thinnable paints hardening at room temperature with good adhesion to all mineral substrates.Drying at elevated temperatures (> 60 °C) should be avoided. At such conditions traces of acrylonitrile will be released. If the hardener is diluted with water there may be stability problems at solid concentrations of less than 20 %, especially at storage temperatures above 35 °C. When pigments and fillers are being dispersed in the hardener, the temperature must not be allowed to rise above 40 °C. These paints retain a constant gloss irrespective of thinning ratio or the time between mixing and the end of the pot life. Beckopox EH 623w may be used in combination with Beckopox EP 128 as an additive for hydraulic mortars, the mechanical properties of the cured system being considerably enhanced by the additive.

BECKOPOX EP 147W is a non-crystallizing, contains co-reacting emulsifiers. Primers/coatings on mineral and metallic substrates. Adhesives and water-washable jointing-compounds for tiles. BECKOPOX EP 147W is a non-crystallizing Bisphenol A/F liquid epoxy resin containing cross-linkable emulsifiers. Formulations cured with Beckopox EH 613w, EH 623w or EH 659w give hard films with high abrasion resistance, good corrosion protection and chemical resistance. To adjust viscosity a reduction with reactive diluents such as Beckopox EP 075 and EP 080 is possible. Beckopox EP 147w can be formulated together with the solid resin dispersions Beckopox EP 384w or EP 385w to improve their hardness adhesion to porous substrates.

BECKOPOX EM 2120W/45WA is an epoxy-amine-adduct dispersion in water, containing very small amounts of organic co-solvent. Beckopox EM 2120w is suited to formulate water borne 1 pack anticorrosive primers and 1 pack single coats with good anticorrosive properties, especially on smooth steel. Due to the special character of Beckopox EM 2120w very fast drying coatings can be formulated. Pigments and extenders should be dispersed in a pigment paste since Beckopox EM 2120w does not possess sufficient shear stability. Organic solvents in the formulation should be added to the pigment paste or should be diluted with water before adding to EM 2120.

Beckopox EP 2384w is a type 1 solid epoxy resin as aqueous dispersion. Formulated together with suitable curing agents such as Beckopox EH 623w, EH 659w, VEH 2188w or VEH 2177w it results in rapid drying coating systems for mineral and metal substrates. The rapid drying property makes it possible to apply more coats within one working day. Dispersing of pigments and fillers can be carried out in Beckopox EP 2384w if the temperature does not exceed 40 °C. The formulated paint stability can be influenced by additives; the additives should not contain functional groups capable of reacting with epoxy groups.