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Bomar Oligomers® BRC-4421

1 of 88 products in this brand
BRC-4421 is a difunctional, hydrophobic urethane acrylate that can be formulated into chemical and temperature resistant coatings and resins. The material has low color and excellent adhesion to a wide variety of plastics. The material can be formulated into tough, impact resistant 3D printing resinswith excellent flexibility. It’s ultra-low water absorption makes this an excellent choice for moisture sensitive or hydrophobic applications

Chemical Family: Urethane Acrylate/Isocyanate

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Urethane Acrylate/Isocyanate

CASE Ingredients Functions

Oligomer

Technologies

Base Chemicals & Intermediates,

CASE Ingredients

Product Families

CASE Ingredients — Monomers & Intermediates

Oligomers

Base Chemicals & Intermediates — Monomers & Oligomers

Acrylics, Acrylates & Methacrylates

Features & Benefits

CASE Ingredients Features

Abrasion Resistance,

Acid Resistance,

Alkali Resistance,

Chemical Resistance,

Excellent Adhesion,

Good Balance of Properties,

Good Toughness,

High Gloss,

Improved Flexibility,

Low Water Absorption,

Non-Yellowing Grade,

Temperature Resistance,

Water Resistance

Product Highlights
  • Excellent plastics adhesion
  • Non-yellowing
  • Excellent hydrophobicity
  • Imparts toughness
  • Glossy finish
  • Provides abrasion resistance

Applications & Uses

Compatible Substrates & Surfaces

Plastics

Base Chemicals End Uses

Inks

Recommended Application
  • Tough 3D printing resins
  • Impact resistant coatings for plastics
  • Moisture-senstive coatings or adhesives

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (60 °C)6,600cP—
Pt-Co Color (APHA)50——
Pt-Co Color50APHA—
Refractive Index (25°C)1.480——
Density (25°C)1.090g/cm3—

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TM50 TP50 H50 HE30

BR-4421

 70 50 50 50 50 70
IBOA 30 50        
TMPTA     50      
TPGDA       50    
HDDA         50  
HEMA           30

Irgacure® 184

 2 2 2 2 2 2
Viscosity, 25°C (CAP2000+)

6.880

 1.100 5.300 1.200 500 2.600

 

Cured Mechanical Properties
Property I30 I50 TM50 TP50 H50 HE30
Tensile Strength, (psi, ASTM D882)

3.000

3.300

6.200

3.500

4.500

 1.300
Elongation (%, ASTM D882) 120 30 3.1 11.0 6.8 120
Elastic Modulus (ksi, ASTM D882)

90

210

290

150

160

 25
Durometer Hardness

75D

 81D

88D

79D

 81D

75D

Water Absorption, %(24 hrs)

 0.17 0.13 0.27 0.30 0.21 0.99
MEK Double Rubs (#) 72 25 >200 98 62 18
Tg(DMA) = 48°C; Peak tan delta; cured with 2 phr of Irgacure® 184
Adhesion Properties
Substrate I30 I50 TM50 TP50 H50 HE30
ABS XXX XXX XXX XXX XXX X
Aluminum   XX        
Cold Rolled Steel XX XX   X    
Glass   X        
HDPE            
PET XXX XXX XXX XX X  
PMMA XXX XXX   X X  
Polycarbonate XXX XXX XXX XXX XXX  
Polypropylene            
PVC XXX XXX XXX XXX XXX  
Stainless Steel   XX        

X - Recommended, XX - Highly Recommended, XXX - Strongly Recommended

Viscosity Reduction with Reactive Diluents

Dymax Corporation Bomar BRC-4421 Viscosity Reduction with Reactive Diluents

Safety & Health

Safety 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.