Bayhydrol® UH 240 

Bayhydrol® UH 240 is an anionic polyester polyurethane dispersion used as combination binder in highly flexible, water-thinnable, air- and force-drying primers and one-coat finishes for plastics. It gives good surface handle and good resistance to abrasion/water. This product has an Efflux time at 23°C, (4mmcup) of max. 70, a non-volatile content (1g / 1h / 125°C) of 39-41, and a pH value of 6-8, and a mean particle size of max. 210.

Bayhydrol® UH 240 can be used in combination with hydrofunctional resins, preferably Bayhydrol® U XP 2428, and U 355 either U 475, in the formulation of highly flexible two-component polyurethane top coats (e.g. in soft-feel coating systems). After cross-linking, Bayhydur® 3100 force-drying (e.g. 30 - 45 min at 80°C) yields films with good surface handle and good resistance to abrasion and water.

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Covestro (formerly Bayer MaterialScience) 科思创

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