Products in Electronics Coatings: Urethane Acrylate/Isocyanate

Bomar™BR-640Dis a polybutadiene (PBD) urethane acrylate with a functionality of two. Designed to meet rigorous electronic applications, BR-640D has many desirable properties typical to PBD resins, combined with radiation curability. In applications requiring thermal cycling resistance, BR-640Dwithstands the extremes of temperature typical of such tests, without undue degradation of properties.Excellent hydrophobic properties exhibited where 0.012 and 0.037% water was absorbed by cured coating when submerged in water for 24 hours. In addition to the adhesion properties, BR-640D showed excellent adhesion to ABS, acrylic, nylon-6, PVC, and PS.

Bomar™ BR-641D is a Polybutadiene (PBD) urethane acrylate, which was designed to meet rigorous electronic coating applications. This oligomer has exceptional adhesion to various metals, glass,and polycarbonate substrates. BR-641D has many desirable properties that are typical to PBD resins, combined with radiation curability. In applications requiring thermal cycling resistance, BR-641D withstands the extremes of temperature typical of such tests, without undue degradation of properties. In addition to the adhesion properties listed in the table below, BR-641D showed excellent adhesion to PMMA, ABS, PVC, Nylon-6, Polystyrene,and Polypropylene.

Bomar™ BR-742S is a difunctional, polyester Urethane Acrylate Oligomer that offers good weatherability. High-impact-strength coatings and inks can be formulated that are non-yellowing and have high gloss. This material offers low shrinkage, which is excellent for 3D printing applications. Furthermore, BR-742S is registered with INCI for cosmetic applications.

Bomar®BR-643 is a polybutadiene (PBD) urethane acrylate. Designed to meet rigorous electronic applications, BR-643 has many desirable properties typical to PBD resins, combined with radiation curability. In applications requiring thermal cycling resistance, BR-643 withstands the extremes of temperature typical of such tests,without undue degradation of properties

Bomar® BRS-14320S is a difunctional oligomer that combines a robust silicone backbone into a urethane acrylate oligomer. The resulting product provides an unusual combination of desirable properties: softness, flexibility, and temperature resistance. BRS-14320S is a candidate for consideration in formulating 100% UV soft-touch coatings and also for electronics applications

Bomar™ BR-744SD is a difunctional, aliphatic polyester urethane acrylate offering excellent adhesion, flexibility, and tensile strength. It can be effectively formulated for adhesion to steel, aluminum, and various plastics. Products formulated with BR-744SD can be highly flexible, elastomeric, and tacky. It is excellent as an adhesion promoter or reactive tackifier, and is a perfect choice for optically clear UV-PSAs.

Bomar®BR-970H is a low viscosity, difunctional, aliphatic urethane acrylate. BR-970H has high modulus and doesn’t necessarily need to be blended with other oligomers to achieve a balance of toughness and flexibility. BR-970H offers rapid cure and non-yellowing properties where premium performance is required. This oligomer is perfect for 2D and 3D inkjet applications as well for use in Graphic Arts application. This oligomer canalsobe used in electronics, and automotive applications

Bomar®BR-641E is a polybutadiene urethane acrylate oligomer designed for rigorous electronic coating, flexible ink,and pressure-sensitive adhesive applications. This oligomer is also perfect for extremely low water absorption applications. It is resistant to thermal cycling and can withstand the temperature extremes typical of such tests without undue degradation of properties.