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Bomar Oligomers® BR-3641AA

1 of 88 products in this brand
Bomar BR-3641AA is an aliphatic polyether urethane acrylate with a high molecular weight and theoretical 1.3 functionality. Films formulated with BR- 3641AA are highly flexible, elastomeric, and tacky. When formulated as an adhesive, this oligomer is excellent as an adhesion promoter or reactive tackifier. This oligomer offers improved adhesion to a variety of substrates.

Functions: Adhesion Promoter, Oligomer, Tackifier

Chemical Family: Urethane Acrylate/Isocyanate

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Product Highlights
  • Low Color
  • Exhibits Hydrolytic Stability
  • Resilience
  • Tenacious Adhesion
  • Enhances Weatherability
  • Non-Yellowing

Applications & Uses

Adhesive & Sealant Type
Recommended Applications
  • Pressure Sensitive Adhesives
  • Adhesion Promoter
  • Reactive Tackifier

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Density (25 °C)1.06g/cm3
Pt-Co(APHA) Color35
Refractive Index (22°C)1.4606
Viscosity (50 °C)24000cP

Technical Details & Test Data

Typical Formulations

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

Cold Rolled Steel

XX XX      
Glass   XX      
HDPE X XX      
PET X XX   X X
PMMA X XX   X X
Polycarbonate X XX     X
Polypropylene X XX     X
PVC X XX   X X
Stainless Steel X XX   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* 7,600 1,700 7,500 2,000 1,300 6,300

* Brookfield – CAP 2000+ @ 25°C.

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30

Tensile Strength, psi**

20 440 900 700 700
Elongation, 6** 170 1,000 3 15 8

Elastic Modulus, ksi*

X X X X x

Durometer Hardness

09A 24D 59D 35D 40D

Water Absorption, 96 (24 hrs)

1.23 0.75 1.75 1.6 1.31

MEK Double Rubs (#)

19 9 131 8 8
Tg(DMA)=-49°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® BR-3641AA - 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.