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BMI-689 Low Viscosity Liquid Bismaleimide

Harmonization Code : 2925.19.95.90 |   Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds : Imides and their derivatives; salts thereof : Other : Other : Other
Main features
  • Hydrophobic
  • High adhesion to various substrates
  • Superior thermal stability

Product Description

BMI-689 is a unique low viscosity liquid bismaleimide based on a non-hydrogenated dimer diamine backbone. It can be homo-cured via UV or free radical initiators to form tough, hydrophobic, cross-linked polyimides. The material has excellent low pH hydrolytic resistance and thermal stability. The amorphous nature of this BMI allows it to be used in a variety of applications including mixed cure systems (e.g. epoxy and BMI), mixed BMI systems or where a low viscosity, free radical cured resin is required. It is soluble in most aromatic and aliphatic solvents such as toluene, xylene, NMP, etc.

BMI-689 is recommended for use as an additive or base resin in adhesives that are designed for high temperature resistance. It has excellent adhesion to a variety of substrates. When used as a base resin, it can produce films that are tough, flexible and demonstrate good peel strength.

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Product Family
1kg Jar
Normal Price
Sale Price
Quantity OrderedPrice per Jar
  1 - 4 Jar  $710.50 /Jar
  5 - 9 Jar  $526.08 /Jar
  10 - 24 Jar  $419.28 /Jar
  25 - 99 Jar  $364.76 /Jar
  100 - 499 Jar  $311.62 /Jar
Shipping in 2 - 4 weeks Shipping in 2 - 4 weeks


Technical Specifications

General Properties
Appearance at Room Temperature Yellow to amber liquid
Functionality 2
Molecular weight 689 daltons
Mechanical Properties
Viscosity is a measurement of a fluid’s resistance to flow.

Viscosity is commonly measured in centiPoise (cP). One cP is defined as
the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP.

A product like honey would have a much higher viscosity -around 10,000 cPs-
compared to water. As a result, honey would flow much slower out of a tipped glass than
water would.

The viscosity of a material can be decreased with an increase in temperature in
order to better suit an application
Viscosity @ 25°C 1500 cP
Thermal Properties
Weight Loss
Weight Loss @ 300°C 1.0 %
Decomposition Temperature >400 °C
Other Properties
Storage Temperature 5 °C