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Bomar Oligomers® BR-543MB

1 of 88 products in this brand
Bomar® BR-543MB is a difunctional, aliphatic polyether urethane methacrylate. BR-543MB is an excellent candidate to consider for use in cosmetic applications. As a primary oligomer, BR-543MB offers excellent properties of adhesion and optical clarity. As a co-oligomer, BR-543MB can be used to improve an existing formulation’s glass adhesion. This product is listed in the INCI directory to meet cosmetic regulatory guidelines, and has low skin sensitivity.

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
  • High Tensile Strength
  • Improves Impact Resistance
  • Excellent Optical Clarity
  • Improves Adhesion
  • Exhibits Hydrolytic Stability
  • Provides Weatherability
  • Oil Resistant
  • Low Skin Sensitivity

Applications & Uses

Recommended Application
  • Nail Coatings
  • Optical Coatings
  • Adhesion promoting co-oligomer

Properties

Uncured Properties
ValueUnitsTest Method / Conditions
Viscosity (60 °C)13,000cP
Pt-Co Color (APHA)40
Pt-Co Color40APHA
Refractive Index (25°C)1.48
Density (25°C)1.03g/cm3

Technical Details & Test Data

Typical Formulations
Test Formulation Name I30 I50 TP50 TM50 H50 HE30

BR-543MB

70 50 50 50 50 70
IBOA 30 50        
TMPA       50    
TPGDA     50      
HDDA         50  
HEMA           30

Omnirad® 481

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

15,000

2,700 9,900 2,900 1,600 8,700

 

Cured Mechanical Properties
Property I30 I50 TP50 TM50 H50 HE30
Tensile Strength, (psi, ASTM D882) 600

2,200

3,600 1,800 2,500 1,100
Elongation (%, ASTM D882) 110 180 3.8 15.3 7.1 130
Elastic Modulus (ksi, ASTM D882)

1.1

5.5 110 40 55 8.3
Durometer Hardness 60A 31D 73D 51D 57D 83A

Water Absorption, %(24 hrs)

0.85 0.57 1.22 1.17 0.93 3.92
MEK Double Rubs (#) 5 4 30 6

80

20
Tg(DMA)=-55°C; Peak tan delta; cured with 2 phr of Irgacure® 184
Adhesion Properties
Substrate I30 I50 TP50 TM50 H50 HE30
ABS   X XXX   X XX
Aluminum   X        
Cold Rolled Steel   X        
Glass   XX        
HDPE            
PET   X X XX XXX X
PMMA            
Polycarbonate   XX XX X XX  
Stainless Steel   X   X    

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

Viscosity Reduction with Reactive Diluents

Dymax Corporation Bomar BR-543MB Viscosity Reduction with Reactive Diluents