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Bomar Oligomers® BR-441BI20

1 of 88 products in this brand
BR-441BI20 is a fast-curing, high tensile strength, low molecular weight aliphatic polyester urethane acrylate with low color, high hardness, and excellent adhesion to plastic substrates. BR-441BI20 can be considered for use in high tensile strength overprint varnishes, high tensile strength 3D printing resins, and non-yellowing coatings.

Chemical Family: Urethane Acrylate/Isocyanate

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions

Features & Benefits

Product Highlights
  • Fast-curing
  • Glossy Finish
  • Non-yellowing
  • Oil and Chemical Resistance
  • Adhesion to Plastics
  • High Tensile Strength

Applications & Uses

Compatible Substrates & Surfaces
Base Chemicals End Uses
Coating Type
Recommended Application
  • Plastic Coatings
  • Hard 3D Printing Resins
  • Overprint Varnishes

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25°C)73,000cP
Color (Pt-Co)30APHA
Refractive Index (at 25°C)1.49
Density (at 25°C)1.13g/cm3

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TM50 TP50 H50 HE30

BR-441BI20

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

Irgacure® 184

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

2.500

400 2.000 300 140 600

 

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30
Tensile Strength, (psi, ASTM D882)

5.800

5.200

4.000

4.100

4.900

3.600
Elongation (%, ASTM D882) 4.7 3.5 1.9 3.8 4.1 7.2
Elastic Modulus (ksi, ASTM D882)

240

210

240

190

170

190
Durometer Hardness

87D

85D

91D

82D

85D

81D

Water Absorption, %(24 hrs)

0.27 0.20 0.30 0.36 0.24 1.68
MEK Double Rubs (#) 37 7 >200 195 >200 7
Tg(DMA) =86°C; Peak tan delta; cured with 2 phr of Irgacure® 184
Adhesion Properties
Substrate I30 I50 TM50 TP50 H50 HE30
ABS XX XX XXX XX XXX XX
Aluminum            
Cold Rolled Steel            
Glass            
HDPE            
PET XXX XX XXX XXX XXX XXX
PMMA            
Polycarbonate   XXX   X XX  

Polypropylene

           
PVC   XX X      
Stainless Steel            

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

Viscosity Reduction with Reactive Diluents

Dymax Corporation Bomar BR-441BI20 Viscosity Reduction with Reactive Diluents

Safety & Health

Safety 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.