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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.
Fulfilled By ChemPoint
- Manufacturer: Mitsubishi Chemical Group
- Product Line: Elvacite® Specialty Acrylic Resins
- Product: Elvacite® Methacrylate Copolymers
- Industries: Coatings | Inks
- Authorized Countries: Canada | United States
Documents
Overview
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
Related Applications
Related Chemistries
Related Technologies
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