company tower banner
Bomar Specialties LLC Company Logo

Bomar Oligomers® XR-145S

1 of 88 products in this brand
BOMAR® XR-145S, a high molecular weight, trifunctional, aliphatic polyether urethane methacrylate, provides low formulation viscosity and moderate elongation with non-yellowing properties. XR-145S shows adhesion to a variety of substrates, making it a candidate for consideration in mixed surface adhesion applications. It is mainly used in coatings for glass and primer coatings.

Chemical Family: Urethane Acrylate/Isocyanate

End Uses: Primer

Technical Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Labeling Claims
Features
  • Tin free
  • Low viscosity
  • Increases impact resistance
  • Low skin irritation
  • Low modulus

Applications & Uses

Coating Type
Applications
  • 3D printing resins
  • Coatings for glass
  • Primer coatings

Properties

Cured Properties
ValueUnitsTest Method / Conditions
Durometer HardnessD80--
Glass Transition Temperature (Tg)63.0°C-
Linear Shrinkage1.1%-
Nominal Viscosity57500.0cP-
Uncured Properties
ValueUnitsTest Method / Conditions
Density (25°C)1.08g/cm³
Pt-Co Color (APHA)max. 50--
Refractive Index (25°C)1.468--
Refractive Index (25°C)1.471
Viscosity67000.0cP (at 20 rpm)-
Viscosity at 25°C67000.0cP-

Technical Details & Test Data

Typical Formulations

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

Cold Rolled Steel

           
Glass            
HDPE            
PET X X XXX   XXX X
PMMA   X XXX XX XX  
Polycarbonate   X X XX XXX  
Polypropylene            
PVC   X     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* 3,000 600 2,500 600 200 1,400

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30

Tensile Strength, psi**

1,100 3,600 4,500 2,200 2,000 1,200
Elongation, 6** 60 120 4 12 4 60

Elastic Modulus, ksi*

10 75 180 55 80 20

Durometer Hardness

38D 53D 78D 64D 71D 52D

Water Absorption, 96 (24 hrs)

0.91 1 1 1.21 0.93 4

MEK Double Rubs (#)

5 4 >200 7 30 6
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

Bomar Oligomers® XR-145S - 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.