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Bomar Oligomers® BR-204

1 of 88 products in this brand
BOMAR BR-204, an aromatic polyether urethane dimethacrylate, finds use in a diverse number of UV adhesives applications. BR-204 is valued for its strong bond strength, its affinity for glass, steel, and a variety of plastic substrates, and for its excellent elongation. BR-204 is also of value for its low initial viscosity and low color (despite its aromatic nature). It is mainly used in Primer Coatings and Glass Coatings.

Chemical Family: Urethane Acrylate/Isocyanate

End Uses: Primer

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Product Highlights
  • High bond strength
  • High elongation
  • Low color
  • Low neat viscosity
  • Exhibits hydrolytic stability

Applications & Uses

Compatible Substrates & Surfaces
Coating Type
Applications
  • Primer coatings
  • Glass coatings
  • Adhesives

Properties

Typical Properties
ValueUnitsTest Method / Conditions
FluorescingBlue--
RheologyNewtonian--
Cured Properties
ValueUnitsTest Method / Conditions
Durometer HardnessD65--
Elongation at Break225.0%-
Glass Transition Temperature (Tg)-47.0°C-
Modulus of Elasticity175.8 [25,500]MPa (psi)-
Nominal Viscosity450.0cP-
Tensile at Break15.8 [2,300]MPa (psi)-
Uncured Properties
ValueUnitsTest Method / Conditions
Density (25°C)1.03g/cm³
Pt-Co Color (APHA)10.0--
Refractive Index (25°C)1.466--
Viscosity11000.0cP (at 20 rpm)-
Viscosity at 25°C15000.0cP-

Technical Details & Test Data

Typical Formulations

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

Cold Rolled Steel

X X   X XX X
Glass X X       X
HDPE   X        
PET   X X XX XX X
PMMA XX X XXX X XXX  
Polycarbonate X X X XXX XXX X
Polypropylene   X XX      
PVC       XX XXX X
Stainless Steel   X   X   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* 2,100 600 2,300 700 400 1,600

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30

Tensile Strength, psi**

90 150 1,700 1,000 1,400 120
Elongation, 6** 120 190 3 15 8 200

Elastic Modulus, ksi*

0.13 0 65 20 30 0

Durometer Hardness

39A 51A 75D 45D 55D 30A

Water Absorption, 96 (24 hrs)

1.56 1.03 1.64 1.46 0.89 7

MEK Double Rubs (#)

3 6 128 8 17 32
Tg(DMA)=-47°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-204 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.