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Bomar Oligomers® BR-202

1 of 88 products in this brand
Bomar BR-202, an aromatic polyether urethane dimethacrylate, finds use in a diverse number of UV coating applications. BR-202 is valued for its strong bond strength, its affinity for glass, steel, and a variety of plastic substrates, and for its excellent elongation. BR-202 is also of value for its low initial color (despite its aromatic nature).

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
  • Improves adhesion

Applications & Uses

Compatible Substrates & Surfaces
Coating Type
Recommended Applications
  • Primer Coatings
  • Interior Glass Coatings
  • Electronics

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25°C)100,000cP
Color (Pt-Co)20APHA
Refractive Index (at 25°C)1.493
Density (at 25°C)1.08g/cm3

Technical Details & Test Data

Typical Formulations

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

Cold Rolled Steel

X XXX     X XX
Glass X XXX       XXX
HDPE            
PET XXX XXX XXX XX XXX XXX
PMMA X   XXX XXX XXX X
Polycarbonate   X X XXX XXX X
Polypropylene            
PVC X XXX XXX XX XXX X
Stainless Steel X XXX   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* 3,500 2,600 2,800 2,900 1,300 7,600

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30

Tensile Strength, psi**

1,700 2,500 2,900 2,200 2,500 1,400
Elongation, 6** 110 110 3 15 6 95

Elastic Modulus, ksi*

7.2 75 130 45 70 20

Durometer Hardness

62D 76D 85D 75D 79D 70D

Water Absorption, 96 (24 hrs)

0.75 0.39 0.70 0.85 0.6 3

MEK Double Rubs (#)

20 7 >200 45 70 93
Tg(DMA)=38°C; Peak tan delta; cured with 2 phr of Omnirad® 184
Viscosity Reduction With Reactive Diluents

     Dymax Corporation Dymax Corporation BR-202 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.