company tower banner
Bomar Specialties LLC Company Logo

Bomar Oligomers® BR-571MB

1 of 88 products in this brand
Bomar™BR-571MB, a difunctional,aliphatic polyether urethane methacrylate,is used for its desirable balance of toughness and flexibility and its ability to adhere to a variety of substrates. It is an excellent choice for impact-resistantcoatings. BR-571MB also brings desirable weather resistance and low-yellowing properties to formulations utilizing it

Chemical Family: Urethane Acrylate/Isocyanate

Technical Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Product Highlights
  • Improves Adhesion
  • Enhances Flexibility
  • Provides Abrasion Resistance
  • Provides Weatherability
  • Low Yellowing
  • Gloss Finish

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (50 °C)100,000cP
Pt-Co Color (APHA)30
Pt-Co Color30APHA
Refractive Index (25°C)1.493
Density (25°C)1.15g/cm3

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TM50 TP50 H50 HE30

BR-571MB

70 50 50 50 50 70
IBOA 30 50        
TMPTA     50      
TPGDA       50    
HDDA         50  
IBOA           30

Omnirad™ 481

2 2 2 2 2 2
Viscosity, 25°C (CAP2000+) 31,000 2,700 13,000 2,600 1,000 9500

 

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30
Tensile Strength, (psi, ASTM D882) 4,000 3,800 6,900 3,700 4,500 3,800
Elongation (%, ASTM D882) 65 25 3.6 7.5 6.1 65
Elastic Modulus (ksi, ASTM D882) 100 210 280 130 140 110
Durometer Hardness 70D 77D 86D 74D 77D 71D
Pencil Hardnes (ASTM D336) 0.38 0.23 0.48 0.58 0.40 1.56
MEK Double Rubs (#) 80 22 >200 91 >200 122
Tg(DMA)=75°C; Peak tan delta; cured with 2 phr of Omnirad®184
Adhesion Properties
Substrate I30 I50 TM50 TP50 H50 HE30
ABS   X XXX   XX  
PMMA     XXX   X  
Glass           X
PET     XXX   XXX XXX
Polycarbonate   X XXX XXX XXX  
PVC X XX XXX XXX XXX X

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

Viscosity Reduction with Reactive Diluents

Bomar Oligomers® BR-571MB - Viscosity Reduction With Reactive Diluents