Bomar XR-741MS

XR-741MS is a specific type of material known as difunctional aliphatic polyester urethane methacrylate. Here’s a breakdown of its key characteristics and applications:

Composition and Type:

• Chemistry: Difunctional Aliphatic Polyester Urethane Methacrylate
• Functionality: Methacrylate (low skin sensitivity)

Applications:

1. Hard Gel Nail Coatings: Provides high hardness and a glossy finish.
2. High Hardness Coatings: Creates tough, nonyellowing protective coatings.
3. Dental Resins: Suitable for dental applications due to low skin sensitivity.

Features:

• Low Skin Sensitivity: Suitable for cosmetic and dental applications.
• Glossy Finish: Enhances appearance of coatings.
• Nonyellowing: Maintains clarity and color over time.
• High Tensile Strength and Modulus: Provides strength and durability.
• Excellent Adhesion: Bonds well with various substrates including plastics, steel, and aluminum.

Physical Properties (Uncured):

• Viscosity: 52,000 cP at 60°C
• Color: Pt-Co (APHA) 30
• Refractive Index: 1.500
• Density: 1.24 g/cm³ at 25°C

Cured Mechanical Properties:

• Tensile Strength: Ranges between 6,200 psi to 8,800 psi depending on formulation.
• Elongation: Varies from 3.5% to 7%.
• Elastic Modulus: Ranges from 220 ksi to 340 ksi.
• Durometer Hardness: 86D to 91D.
• Water Absorption: Low, between 0.18% to 0.79% (24 hrs).

Adhesion Properties:

• Shows good adhesion to substrates such as ABS, aluminum, cold rolled steel, PET, PMMA, polycarbonate, PVC, and stainless steel.

Typical Formulations:

• Contains various components including XR-741MS, IBOA, TMPTA, TPGDA, HDDA, HEMA, and Omnirad™ 184 for curing.

In summary, XR-741MS is a versatile material primarily used for its combination of strength, adhesion, and cosmetic qualities, making it suitable for applications ranging from hard coatings to dental resins and nail gels. Its formulation versatility allows it to be tailored for specific mechanical and adhesion properties required in different applications.