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Bomar Oligomers® BR-641E

Bomar®BR-641E is a polybutadiene urethane acrylate oligomer designed for rigorous electronic coating, flexible ink,and pressure-sensitive adhesive applications. This oligomer is also perfect for extremely low water absorption applications. It is resistant to thermal cycling and can withstand the temperature extremes typical of such tests without undue degradation of properties.

Identification

CASE Ingredients Functions
Oligomer

Product families

Applications

Electrical & Electronics — Packaging & Assembly
  • Electronics Coatings
Paints & Coatings — Specialty Coatings
  • Electronics Coatings

Product Families

CASE Ingredients — Monomers & Intermediates
  • Oligomers

Other characteristics

Brand
Bomar Oligomers
End Uses
Pressure Sensitive Adhesive
Markets
  • Electrical & Electronics
  • Paints & Coatings
Technology
CASE Ingredients
HIGHLIGHTS
  • Excellent Flexibility
  • Excellent Moisture Resistance
  • Pressure-Sensitive Adhesives
  • Extremely Low Water Absorption
  • Excellent Heat Resistance
  • Electronic Coatings
  • High Temperature Resistance
  • Excellent Light Stability
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.

Typical Formulations

Cold Rolled Steel; X Recommended XX Highly Recommended XXX Strongly Recommended; * Brookfield – CAP 2000+ @ 25°C.; Tensile Strength, psi**; Elastic Modulus, ksi*; Durometer Hardness; Water Absorption, 96 (24 hrs); MEK Double Rubs (#); ** Per ASTM D882 – Not Tested || Incompatible X Unable to Measure

Adhesive & Sealant Type
Pressure Sensitive Adhesive

Technical data

Table 1 of 1

4 rows
CharacteristicValueUnit
Viscosity (60 °C)25,000cP
Refractive Index (25°C)1.477—
Pt-Co Color18APHA
Density (25°C)0.882g/cm3

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