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Bomar Oligomers® BR-741MD1

Bomar™ BR-741MD1 is an aliphatic, difunctional polyester urethane acrylate offering excellent adhesion and flexibility. While not limited to these applications, BR-741MD1 is an effective choice in optically clear coatings and inks for plastics and metals. This oligomer is also perfect for UV & LED nail gel coatings because this material has low skin sensitivity and is INCI listed.

Brand: Bomar Oligomers (88 products)

Chemical Family: Urethane Acrylate/Isocyanate

End Uses: Clearcoat

Technical Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Chemical Family
Urethane Acrylate/Isocyanate
CASE Ingredients Functions
Oligomer
Technologies
CASE Ingredients
Product Families
CASE Ingredients — Monomers & Intermediates
Oligomers

Features & Benefits

CASE Ingredients Features
Excellent Adhesion,
Good Color Stability,
High Gloss,
High Tensile Strength,
Improved Flexibility,
Low Skin Sensitivity,
Low Yellowing
Product Highlights
  • High tensile strength for tough coatings
  • Excellent surface hardness
  • Exceptional elastic modulus
  • Low skin irritation
  • Low MeHQ levels to meet EU regulatory guidelines for cosmetics
  • Non-yellowing and high gloss for long lasting, color stable coatings

Applications & Uses

Markets
Paints & Coatings
Applications
Paints & Coatings — Industrial Coatings
Metal Coatings
Compatible Substrates & Surfaces
Metal,
Plastics
Coating Type
Clearcoat
Recommended Application
  • UV & LED Nail Gel Coating
  • Vacuum Metalized Coatings
  • Hard Coatings and Inks

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (60 °C)2,500cP-
Pt-Co Color (APHA)34--
Pt-Co Color34APHA-
Refractive Index (25°C)1.487--
Density (25°C)1.096g/cm3-

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TP50 TM50 H50 HE30

BR-741MD1

 70 50 50 50 50 70
IBOA 30 50        
TMPTA     50      
TPGDA       50    
HDDA         50  
HEMA           30

Irgacure® 184

 2 2 2 2 2 2
Viscosity, 25°C (CAP2000+) 2,600 300 2,100 300 120 800

 

Cured Mechanical Properties
Property I30 I50 TP50 TM50 H50 HE30
Tensile Strength, (psi, ASTM D882) 9,600 8,800 7,000 8,400 7,700 7,800
Elongation (%, ASTM D882) 4 3.5 2.3 4.5 3.0 3.8
Elastic Modulus (ksi, ASTM D882) 410 370 440 380 360 370
Durometer Hardness 90D 91D 94D 88D 89D

92D

Water Absorption, %(24 hrs)

 0.21 0.16 0.38 0.40 0.31 0.60
MEK Double Rubs (#) >200 154 >200 >200 >200 >200
Tg(DMA)=111°C; Peak tan delta; cured with 2 phr of Omnirad® 184
Adhesion Properties
Substrate I30 I50 TP50 TM50 H50 HE30
ABS     XXX   XXX XXX
Cold Rolled Steel X X   XX X X
Glass           XXX
HDPE            
PET XX XXX XXX XXX XXX XXX
PMMA X X XXX X X  
Polycarbonate X X XXX X XXX  
PVC XXX XXX XXX XXX XXX  
Stainless Steel   X       X

X - Recommended, XX - Highly Recommended, XXX - Strongly Recommended

Viscosity Reduction with Reactive Diluents

Bomar Oligomers® BR-741MD1 - Viscosity Reduction With Reactive Diluents

Safety & Health

General Information

This product is intended for industrial use only. Keep out of the reach of children. Avoid breathing vapors. Avoid contact with skin, eyes, and clothing. Wear impervious gloves. Repeated or continuous skin contact with uncured material may cause irritation. Remove material from skin with soap and water. Never use organic solvents to remove material from skin and eyes. For more information on the safe handling of this material, please refer to the Safety Data Sheet before use.