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Bomar Oligomers® BR-374

1 of 88 products in this brand
Bomar BR-374, a medium molecular weight, difunctional, aliphatic polyether urethane acrylate oligomer, is a material offering a balance of toughness and flexibility, with very low color. Formulations with BR-374 yield high clarity films or tie layers with adhesion to a variety of substrates, making it ideal for laminating applications. It is also used in peroxide-cured roof coatings and floor 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
  • Very low color
  • Enhances flexibility
  • Non-yellowing
  • Improves adhesion
  • Provides weatherability
  • Oil & chemical resistant
  • Exhibits hydrolytic stability

Applications & Uses

Applications
  • Peroxide-cure roof coatings
  • Floor coatings
  • Laminating adhesives

Properties

Typical Properties
ValueUnitsTest Method / Conditions
FluorescingBlue--
RheologyNewtonian--
Cured Properties
ValueUnitsTest Method / Conditions
Durometer HardnessD60--
Elongation at Break200.0%-
Glass Transition Temperature (Tg)-48.0°C-
Modulus of Elasticity158 [23,000]MPa (psi)-
Nominal Viscosity450.0cP-
Tensile at Break580psi-
Uncured Properties
ValueUnitsTest Method / Conditions
Density (25°C)1.1g/cm³
Pt-Co Color (APHA)max. 50--
Refractive Index (25°C)1.4--
Viscosity35000.0cP (at 20 rpm)-
Viscosity at 25°C35000.0cP-

Technical Details & Test Data

Typical Formulations

Adhesion Properties
Substrate I30 I50 TM50 TP50 H50 HE30
ABS X XX        
Aluminum XX XX        

Cold Rolled Steel

X XXX        
Glass   X        
HDPE X X        
PET            
PMMA X XX        
Polycarbonate X X        
Polypropylene            
PVC            
Stainless Steel XXX XXX        

X Recommended XX Highly Recommended XXX Strongly Recommended

Typical Formulations
Test Formulation Name 130 150 TM50 TP50 H50 HE30
BR-742M 70 50 50 50 50 70
IBOA 30 50        
TMPTA     50      
TPGDA       50    
HDDA         50  
HEMA           30
Omnirad 184 2 2 2 2 2 2
Viscosity, 25°C* 3,600 800 3,400 1,000 500 -

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30

Tensile Strength, psi**

600 1,400 1,400 1,000 900 -
Elongation, 6** 290 400 4 20 6 -

Elastic Modulus, ksi*

X X X X X -

Durometer Hardness

49A 79A 68D 43D 53D -

Water Absorption, 96 (24 hrs)

          -

MEK Double Rubs (#)

4 3.00 141.00 24 44 -

Tg(DMA)=-48°C; Peak tan delta; cured with 2 phr of Omnirad® 184

** Per ASTM D882 – Not Tested || Incompatible X Unable to Measure

Viscosity Reduction With Reactive Diluents

   Dymax Corporation Dymax Corporation BR-374 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.