Bomar Oligomers® BR-543

1 of 88 products in this brand
Bomar® BR-543 is a difunctional, aliphatic, polyether urethane acrylate. Films formulated with BR-543 exhibit superior physical and weathering capabilities. BR-543 may also be used to improve the flexibility, weathering, and adhesion characteristics of existing film and foil coatings.

Chemical Family: Urethane Acrylate/Isocyanate

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Product Highlights
  • Enhances Flexibility
  • Abrasion Resistance
  • Exhibits Hydrolytic Stability
  • Provides Oil & Chemical Resistance
  • High Clarity
  • High Tensile Strength
  • Provides Excellent Weatherability

Applications & Uses

Recommended Application
  • Foil Coatings
  • Optical Coatings on Polycarbonate
  • Weather-Resistant Coatings

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (50 °C)30,000cP
Pt-Co Color (APHA)25
Pt-Co Color25APHA
Refractive Index (25°C)1.475
Density (25°C)1.17g/cm3

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TM50 TP50 H50 HE30

BR-543

70 50 50 50 50 70
IBOA 30 50        
TMPA     50      
TPGDA       50    
HDDA         50  
HEMA           30

Omnirad® 481

2 2 2 2 2 2
Viscosity, 25°C (CAP2000+)

14.000

2,500 17,000 5,300 2,800 7,900

 

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30
Tensile Strength, (psi, ASTM D882) 480 1,300 2,900 1,600 2,400 450
Elongation (%, ASTM D882) 85 130 4.1 10.9 10.8 95
Elastic Modulus (ksi, ASTM D882) 1.2 9.7 100 35 50 1.8
Durometer Hardness 56A 74A 63D 43D 54D 42A
Pencil Hardnes (ASTM D3363) 0.86 0.55 1.31 1.23 1.00 4.68
MEK Double Rubs (#) 6 3 46 16 15 10
Tg(DMA)=-47°C; Peak tan delta; cured with 2 phr of Omnirad® 184
Adhesion Properties
Substrate I30 I50 TM50 TP50 H50 HE30
Aluminum   XX XXX   X  
Cold Rolled Steel   XX        
PET   XX XXX XX XXX  
PMMA X XXX XXX      
Polycarbonate X XXX XXX XX XXX  
Stainless Steel   XX       X

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

Viscosity Reduction with Reactive Diluents

Dymax Corporation Bomar BR-543 Viscosity Reduction with Reactive Diluents