company tower banner
Bomar Specialties LLC Company Logo

Bomar Oligomers® BR-742MS

1 of 88 products in this brand
Bomar®BR-742MS is an oligomer that provides excellent acetone removability when used in gel polish hybrid applications. Low heat generation occurs during cure without lamps. The resultant coating also has high gloss, and has low APHA color impact. Furthermore, this oligomer was designed to meet regulatory expectations for retail applicationsin Europe

Chemical Family: Urethane Acrylate/Isocyanate

End Uses: Top Coat

Technical Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Features
  • Undetectable MeHQ levels (<10 ppm)
  • Fast acetone soak-off
  • Low color
  • Glossy finish
  • Low heat generation
  • Good balance of toughness and elongation

Applications & Uses

Coating Type
Applications
  • Nail gel color coats
  • Nail gel top coats
  • Nail art gels

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Density (25 °C)1.1g/cm3
Viscosity (60 °C)30000cP
Pt-Co Color(APHA)max. 50
Pt-Co Colormax. 50APHA
Refractive Index (25°C)1.485

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TM50 TP50 H50 HE30

BR-742MS

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

Irgacure® 184

2 2 2 2 2 2
Viscosity, 25°C (CAP2000+) 18,000 1,400 8,900 1,400 400 3,500

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties :
Property I30 I50 TM50 TP50 H50 HE30
Tensile Strength, (psi, ASTM D882) 2,300 3,200 5,600 3,100 4,400 2,600
Elongation (%, ASTM D882) 65 65 3.0 8.0 7.0 100
Elastic Modulus (ksi, ASTM D882) 70 170 220 100 120 65
Durometer Hardness 81D 84D 90D 81D 82D 80D

Water Absorption, %(24 hrs)

0.31 0.21 0.39 0.49 0.36 1.43
MEK Double Rubs (#) 10 7 >200 15 70 45
Tg(DMA)=58°C; Peak tan delta; cured with 2 phr of Omnirad® 184

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

Adhesion Properties :
Substrate I30 I50 TM50 TP50 H50 HE30
ABS X XX XX X XXX XX
Acrylic (PMMA            
Aluminum            
Cold Rolled Steel   XX   X    
Glass            
HDPE            
PET X XXX XXX XXX XXX X
Polycarbonate   X   X XXX  
PVC XXX     X XX XX
Stainless Steel XXX XXX XXX   X  

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

Viscosity Reduction with Reactive Diluents

Dymax Corporation Bomar BR-742MS Viscosity Reduction with Reactive Diluents