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Bomar Oligomers® BR-571

1 of 88 products in this brand
Bomar BR-571 is an aliphatic polyether urethane diacrylate with exceptionally low color. Based on a stable polyether backbone, BR-571 offers excellent physical properties in formulated films. While relatively high in neat viscosity, BR-571 reduces quickly with the addition of heat or monomer. Formulations using BR-571 often have a unique blend of toughness and flexibility. It is mainly used in Coatings for Wood, Pigmented Coatings and Rigid Plastic Topcoats.

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
  • Provides toughness
  • Solvent resistance
  • Exceptionally low color
  • Imparts hardness
  • Exhibits hydrolytic stability
  • Improves Weatherability
  • Gloss Finish

Applications & Uses

Compatible Substrates & Surfaces
Applications
  • Coatings for wood
  • Pigmented coatings
  • Rigid plastic topcoats

Properties

Typical Properties
ValueUnitsTest Method / Conditions
FluorescingNo--
RheologyNewtonian--
Cured Properties
ValueUnitsTest Method / Conditions
Durometer HardnessA65--
Elongation at Break270.0%-
Glass Transition Temperature (Tg)37.0°C-
Modulus of Elasticity3 [370]MPa (psi)-
Nominal Viscosity12000.0cP-
Tensile at Break3400psi-
Uncured Properties
ValueUnitsTest Method / Conditions
Density (25°C)1.08g/cm³
Pt-Co Color (APHA)10.0--
Refractive Index (25°C)1.493--
Viscosity at 50°C100000.0cP-
Viscosity at 60°C31000.0--

Technical Details & Test Data

Typical Formulations

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

Cold Rolled Steel

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

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* 34,000 3,000 15,000 2,800 1,000 9,800

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30

Tensile Strength, psi**

3,400 2,800 4,600 2,400 2,800 2,300
Elongation, 6** 75 40 3 11 6 80

Elastic Modulus, ksi*

45 140 170 70 90 20

Durometer Hardness

64D 75D 800 68D 71D 60D

Water Absorption, 96 (24 hrs)

1 0.35 1 1 1 3

MEK Double Rubs (#)

75 25 >200 92 130 23

Tg(DMA)=63°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-571 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.