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Bomar Oligomers® BR-741

1 of 88 products in this brand
Bomar™ BR-741 is a lowmolecular weight, difunctional, aliphatic polyester urethane acrylatethatcan be effectively formulated for adhesion to steel, aluminum, and various plastics with some amount of surface energy. The resulting hard, tough film makes an effective protective coating, which will be non-yellowing, due to the aliphatic backbone of BR-741

Chemical Family: Urethane Acrylate/Isocyanate

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Base Chemicals Functions
CASE Ingredients Functions

Features & Benefits

Product Highlights
  • Improves Adhesion
  • Enhances Hardness
  • Non-Yellowing
  • Develops Weatherability
  • Provides Abrasion Resistance
  • Gloss Finish

Applications & Uses

Compatible Substrates & Surfaces

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Pt-Co Color (APHA)40
Pt-Co Color40APHA
Refractive Index (25°C)1.494
Density (25°C)1.10g/cm3
Viscosity (50°C)150,000cP

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TM50 TP50 H50 HE30

BR-741

70 50 50 50 50 70
IBOA 30 50        
TMPTA     50      
TPGDA       50    
HDDA         50  
HEMA           30
Omnirad™ 481 2 2 2 2 2 2
Viscosity, 25°C (CAP2000+)

34.000

1,900 8,700 1,100 800 -

 

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50
Tensile Strength, (psi, ASTM D882) 9,200 7,400 3,800 5,400 4,500
Elongation (%, ASTM D882) 10 3 1.2 3 1.8
Elastic Modulus (ksi, ASTM D882) 390 340 420 370 330
Durometer Hardness

59D

83D

>95D

81D

83D
MEK Double Rubs (#) 35 13 >200 175 >200
Tg(DMA) = 79°C; Peak tan delta; cured with 2 phr of Omnirad™ 48
Adhesion Properties
Substrate I30 I50 TM50 TP50 H50
Aluminum XXX XXX   X X
Cold Rolled Steel X XX      
Glass          
HDPE          
Polycarbonate XX XXX X XXX XXX
Stainless Steel   X      

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

Viscosity Reduction with Reactive Diluents

Dymax Corporation Bomar BR-741 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.