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Dianal BR-87
Dianal BR-87 is an acrylic resin used in ink and coating applications. It has a low molecular weight and high Tg.
Dianal BR-87 is a methyl methacrylate resin with a very high glass transition temperature (Tg) of 106°C and a relatively low molecular weight of 30,000. This resin is supplied as a free-flowing, nondusting bead that is soluble in solvents such as toluene, MEK, acetone, and ethyl acetate. Compared to other Dianal methyl methacrylate resins, BR-87 has a higher acid number to improve pigment dispersion. It provides value as a binder in ink and coating applications for plastic and metal substrates to form films with high hardness, adhesion, clarity, and excellent resistance to weathering, abrasion, moisture, and discoloration. BR-87 may also be used as a modifying resin for other Dianal resins to increase hardness, given its high Tg.
Specifications
Nonvolatiles, min %: 99.0 Clarity in toluene at 40% solids: Clear Gardner color, max: 2 Gardner viscosity at 25°C and 30% solids in toluene: V–Y Glass transition temp, calculated onset °C: 106 Molecular weight: 30,000 Acid number, mg KOH/g resin: 9 MFI, g/10 min at 190°C: 3.7
Primary Chemistry: Acrylic
Features & Benefits
High hardness while offering a moderate degree of flexibility Highly resistant to chemical attack, weathering, abrasion, water, moisture, and discoloration Low molecular weight and high Tg High acid number and good pigment dispersion capabilities
Problems Solved
Low durability of coatings exposed to physical or environmental stress Poor color strength due to inadequate pigment dispersion in coatings or inks
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Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
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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