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Bayhydrol® A 2139/2 by Covestro is an aqueous, fatty acid-modified, hydroxyfunctional polyester-polyacrylate. Possesses good adhesion and high body. Exhibits good pigment wetting properties and high shear stability. Bayhydrol® A 2139/2 is used in the formulation of two-component polyurethane topcoats. Primary self-crosslinking acrylic dispersion. It has good chemical resistance, long pot life, hand mixability and is fast drying. The neutral agent for product is NH<sub>3</sub>. It is used in 1K and 2K coatings and wood coatings. Secondary polyacrylic dispersion. It exhibits low VOC, high gloss, good chemical and weather resistance and low thermo-yellowing. The neutral agent for product is dimethyl ethanol amine (DEMA). It is used in solvent-borne, high solids, very high solids and waterborne coatings. It is used for coating large vehicles such as trains, trucks, airplane etc., and in metal, plastic, automotive and industrial coatings. Aqueous hydroxyfunctional polyacrylic dispersion. Used for the formulation of waterborne two-component clearcoats and topcoats for automotive OEM coatings and coatings for plastics. Exhibits very good UV stability. Provides very good resistance to solvents and water. Imparts good pigment wetting properties and high shear stability. Bayhydrol® A 242 by Covestro is a water-thinnable polyacrylic resin containing hydroxyl groups. Used in the formulation of aqueous two-component polyurethane systems for various applications by brush, roller or spray. Aliphatic anionic polyurethane dispersion. Used as a binder in the formulation of highly flexible, lightfast water-thinnable coatings for wood, metal, plastics and mineral substrates, and as a combination binder to improve the elasticity and flexibility of water-thinnable coatings. Shows compatibility with many acrylic, styrene-acrylate and polyurethane dispersions. Bayhydrol® HD 2017 by Covestro is a hydroxyl-functional acrylic resin dispersed in water with approximately 1% co-solvent. It can be used as a coreactant for Bayhydur water-dispersible polyisocyanates in the formulation of <50g/l VOC coatings. It can be combined with other water-reducible binders. Coatings formulated with Bayhydrol® HD 2017 and suitable polyisocyanates, have good chemical resistance and durability. Suitable for highly durable architectural wall coatings. Recommended storage temperature is >0º-30ºC. It has a shelf life of six months. Bayhydrol® UV 2689/1 by Covestro is an anionic, UV-curable polyurethane dispersion. It can be easily matted using common and can combined with Bayhydur® or other hardeners to formulate "dual cure" waterborne UV coatings. It is supplied as approximately 42% solids dispersion in water and can be thinned with water. Bayhydrol® UV 2689/1 is suitable for use in the formulation of industrial waterborne UV clear and pigmented coatings. Main applications are plastic- and wood coatings. High gloss coatings can also be achieved. The addition of 1.0 to 2.5 weight% photoinitiator relative to binder has proven effective for initiation. Recommended storage temperature is 5º-30ºC. It has a shelf life of six months. Anionic dispersion of an aliphatic polycarbonate urethane resin in water and n-methyl-2-pyrrolidone. Used in the formulation of ambient-cure or bake coatings for a wide range of rigid and flexible substrates such as leather, vinyl-coated fabric, textiles, flooring, plastics, and metals. Provides film hardness and flexibility. Offers good water and abrasion resistance. Possesses very good hydrolytic stability. Aqueous hydroxyfunctional polyacrylic secondary dispersion. Used for the formulation of two-component wood coating systems. Offers very good film transparency and high wood warmth. Exhibits coatings with very high chemical resistance.
Bayhydrol®
Coating ingredients supplied by Covestro
Bayhydrol® by Covestro is a range of low- to ultra-low VOC polyurethane dispersions (PUDs) and waterborne polyacrylic polyols for 2K systems.
Key features of Bayhydrol® brand include:
- Low VOC formulations
- Waterborne technology
- Fast drying performance
- Excellent UV and chemical resistance
- Suitable for 2K polyurethane systems