company tower banner
Bomar Specialties LLC Company Logo

Bomar Oligomers® BR-3741AB

1 of 88 products in this brand

BR-3741AB is a 1.3 functional aliphatic polyether urethane acrylate. The extremely flexible nature of BR-3741AB makes it an excellent candidate for consideration in UV light-curable PSAs as a reactive tackifier. It is also used as a co-oligomer for adhesion promotion in coatings.

Functions: Oligomer, Tackifier

Technical Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions

Features & Benefits

Base Chemicals Features
Features
  • Enhances flexibility
  • Improves adhesion
  • Exhibits hydrolytic stability
  • Oil and chemical resistant
  • Provides softness
  • Nonyellowing
  • Provides weatherability
  • Adheres to a wide range of substrates

Applications & Uses

Markets
Cure Method
Base Chemicals End Uses
Applications
  • Reactive tackifier
  • UV pressure sensitive adhesives (PSA)
  • Co-oligomer for adhesion promotion

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Density (at 25°C)1.04g/cm3
Refractive Index (at 25°C)1.459
Viscosity (at 60°C)23000cP

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Cured Mechanical Properties
Property 130 150 TM50 TP50 H50
Tensile Strength, psi** 340 550   420 410
Elongation, %** 1,100 1,000   13 6.5
Elastic Modulus, ksi* 0.28 8.1   7 9.3
Durometer Hardness 26A 31D   40D 40D
Water Absorption, % (24 hrs)          
MEK Double Rubs (#)          
Tg (DMA) =-49°C; Peak tan delta; cured with 2 phr of Omnirad® 184

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

Adhesion Properties
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 23,000 5,200   3,800 6,100  

* Recommended ** Highly Recommended *** Strongly Recommended

Typical Formulations
Substrate I30 I50 TM50 TP50 H50 HE30
ABS            
Aluminum ** ***        
Cold Rolled Steel ** ***   ** *  
Glass ** **        
HDPE * *        
PET            
PMMA            
Polycarbonate ** ***   * *  
Polypropylene            
PVC            
Stainless Steel *** ***   *    

* Brookfield – CAP 2000+ @ 25°C.

Viscosity Reduction with Reactive Diluents

Bomar Oligomers® BR-3741AB - 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