Organic Processing Binders for the Electronics Industry

Updated December 2020 

Poly(alkylene carbonates) are synthesized through the polymerization of carbon dioxide and epoxides. The products of their combustion are carbon dioxide and water vapor, which are non-toxic, non-flammable, and environmentally safe. They burn cleanly in any environment, oxidizing or inert. They are colorless, amorphous thermoplastic polymers with low glass transition temperatures.

electronic parts

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QPAC® Organic Binders - Ideally Suited to the Electronic Industry

QPAC® organic binders are ideally suited to electronic applications as a processing/organic/casrificial binder for ceramic, metal and cermet powders. This includes pressing, sintering and injection molding operations to fabricate tapes, electronic pastes and parts.

The Benefits of Using QPAC25® and QPAC40® Organic Binders

The benefits of using QPAC25® and QPAC40® organic binders includes the following:

  • Decomposition at low temperature. QPAC® decomposes completely between 220°C - 340°C, which can be 100°C or more below the decomposition temperatures of other binders.
  • Decomposition can occur in a wide range of atmospheres including air, oxygen, nitrogen, hydrogen, argon and vacuum.
  • Upon decomposition, QPAC® leaves less than10 ppm ash residue with the complete burn-out of carbon.
  • QPAC® is soluble in many common solvents.
  • The controlled polymer debinding process allows for improved part structure and pore size management.
  • The use of QPAC® as a binders allow for parts with excellent green strength and density.
  • QPAC® has excellent film-forming and coating capabilities.

QPAC® has superior binder burn-off characteristics compared to other materials. With the trend toward miniaturization of electronic components, these features are more important than ever.

Available Product Forms of QPAC25® and QPAC40® Organic Binders

The QPAC25® and QPAC40® organic binders are available in various forms such as:

  • Powder
  • Pellets
  • Granulates
  • Solution
  • Aqueous Emulsion

Properties of QPAC25 and QPAC40 Organic Binders

The properties of QPAC25® and QPAC40® are outlined in the following table.

QPAC®25 - PEC - polyethylene carbonate



Chemical formula

[CH2CH2OCO2]n or C3H4O3

Tensile strength

500 - 1,500 psi


Methylene chloride, Chloroform, and 1,2-Dichloroethane



QPAC®40 - PPC - polypropylene carbonate



Chemical formula

[CHCH3CH2OCO2]n or C4H6O3

Tensile strength

5,000 - 6,000 psi


Methylene chloride, MEK, Acetone & Propylene carbonate



This information has been sourced, reviewed and adapted from materials provided by Empower Materials.

For more information on this source, please visit Empower Materials.


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