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Dianal BR-121DA
Dianal BR-121DA is a relatively high molecular weight acrylic resin used for achieving high adhesion of inks and coatings on metal substrates.
Dianal BR-121DA is a high–molecular weight acrylic resin designed for paint, coating, and ink applications for metal substrates. It is soluble in a range of solvents, including toluene, MEK, ethyl acetate, acetone, t-butyl acetate, n-butyl acetate, and PCBTF. BR-121 creates high-viscosity solutions and forms films with water-white clarity and fast solvent release.
With a molecular weight of 110,000 and glass transition temperature (Tg) of 65°C, Dianal BR-121 is mainly suited as a resin to create hard and durable paint, coating, and ink films. These films resist abrasion, attack from dilute acids and bases, weathering, and discoloration from UV exposure. A distinguishing trait of BR-121 is its ability to form films with excellent adhesion to metal substrates, such as cold rolled steel, zinc–phosphate steel, copper, and tin. These factors make it useful for creating industrial coatings, marine coatings, and coatings applied to machinery and equipment.
Specifications
Nonvolatiles, min %: 99.0 Clarity in toluene at 40% solids: Clear Gardner color, max: 2 Gardner viscosity at 25°C and 40% solids in toluene: Y–Z1 Glass transition temp, onset °C: 65 Molecular weight: 110,000 Acid number, mg KOH/g resin: 7.5 OH number, mg KOH/g resin: 12 MFI, g/10 min at 180°C: 3.0
Primary Chemistry: Acrylic
Features & Benefits
Forms films with excellent hardness Creates high gloss and resistance to chemicals and discoloration from UV exposure Fast dissolving Provides excellent adhesion to metallic substrates
Problems Solved
Discoloration caused by exposure to ultraviolet rays Delamination or scuffing of films applied to metallic substrates Poor durability stemming from susceptibility to abrasion and scratches Extended production times due to slowly dissolving resin
Applications
Clear, translucent, and pigmented metal coatings Paints Inks
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ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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