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Bomar Oligomers® BR-581MT

1 of 88 products in this brand

BR-581MT is an oligomer blend that provides a low color, tack-free cure under low-intensity LED cure conditions. BR-581MT provides a balance of hardness and flexibility for abrasion resistance on flexible substrates, while also yielding a high-gloss, non-yellowing finish. This product is a resin blend containing 25% DEGDMA, is tin-free, is fully INCI listed, and can be formulated into a tack-free top coat for nail gel applications. For further recommendations on formulating for nail applications, please see our sell sheet for a starting point formula.

Labeling Claims: Tin-free

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions

Features & Benefits

Labeling Claims
Features
  • Tack-free surface cure with low intensity LED lamps
  • Excellent gloss
  • Tin-free
  • Flexibility to prevent chipping
  • Superior hardness
  • Low-yellowing
  • Low MEHQ levels and INCI listed
  • Excellent shelf stability up to 50°C

Applications & Uses

Compatible Substrates & Surfaces
Cure Method
Base Chemicals End Uses
Applications
  • Tack-free nail gel top coats
  • Tack-free coatings for LED curing

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)1.12g/cm3
Durometer Hardness42D
Elongation at Break50%
Nominal Viscosity (at 25°C)8000cP
Nominal Viscosity (at 25°C)1100cP
Refractive Index (at 25°C)1.49
Tensile at Break2MPa
Glass Transition Temperature (DMA)44°C
Viscosity (at 60°C)8000cP

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30
Tensile Strength, psi** 270 600 4,800 2,000 3,700
Elongation, %** 50 70 17 24 10.5
Elastic Modulus, ksi* 2.8 25 350 30 140
Durometer Hardness 420 66D 870 D64 D78
Water Absorption, % (24 hrs) 0.27 0.19 0.28 0.47 0.31
MEK Double Rubs (#) 12 6 >200 65 >200
Tg(DMA)=44°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 * ** ***   ***
Aluminum * ***      
Cold Rolled Steel * **   *  
Glass * *      
HDPE          
PET * ** *** * **
PMMA   * **   *
Polycarbonate   * *** * ***
Polypropylene          
PVC   ** *** *** ***
Stainless Steel * **      

* Recommended ** Highly Recommended *** Strongly Recommended

Typical Formulations
Test Formulation Name 130 160 TM50 TP50 H50 HE30
BR-146 70 50 50 50 50 70
IBOA 30 50        
TMPTA     50      
TPGDA       50    
HODA         50  
HEMA           30
Omniradw 184 2 2 2 2 2 2
Viscosity, 25C 1,100 300 1,200 340 180

* Brookfield – CAP 2000+ @ 25°C.

Viscosity Reduction with Reactive Diluents

Bomar Oligomers® BR-581MT - Viscosity Reduction With Reactive Diluents

Safety & Health

Safety

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.

Packaging & Availability