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Bomar Oligomers® XR-741MS

1 of 88 products in this brand

BOMAR™ XR-741MS, a low molecular weight, difunctional, aliphatic polyester urethane methacrylate, can be effectively formulated for adhesion to steel, aluminum, and various plastics. The resulting hard, tough film makes an effective, non-yellowing protective coating. This material has low skin sensitivity for dental and cosmetic applications.

Chemical Family: Urethane Acrylate/Isocyanate

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions

Features & Benefits

Features
  • Methacrylate functionality for low skin sensitivity
  • Glossy finish
  • High tensile strength and modulus
  • Excellent adhesion to plastic substrates
  • Excellent nonyellowing

Applications & Uses

Compatible Substrates & Surfaces
Applications
  • Hard gel nail coatings
  • High hardness coatings
  • Dental resins

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (75°C)8,000cP
Pt-Co Color (APHA)50
Pt-Co Color50APHA
Refractive Index (25°C)1.489
Density (25°C)1.09g/cm3

Technical Details & Test Data

Typical Formulations

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

Cold Rolled Steel

X     X   XXX
Glass       X   X
HDPE            
PET XXX XXX XXX XXX XXX XXX
PMMA XXX XX XXX XXX XXX X
Polycarbonate X XXX XXX XXX XXX X
Polypropylene         X  
PVC            
Stainless Steel X XX   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* 19,000 1,000 8,000 1,100 300 3,000

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30

Tensile Strength, psi**

8,100 8,100 6,500 6,500 6,600 6,200
Elongation, 6** 4.5 4 7 7 5 7

Elastic Modulus, ksi*

320 300 250 250 220 250

Durometer Hardness

89D 88D 86D 86D 86D 90D

Water Absorption, 96 (24 hrs)

0.21 0.18 0.38 0.38 0.31 1

MEK Double Rubs (#)

145 13 >200 >200 >200 >200
Tg(DMA)=107°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 Bomar XR-741MS 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.