Polymer Bulletin

, Volume 25, Issue 5, pp 559–565

Synthesis of high purity o-cresol formaldehyde novolac epoxy resins

  • Chun-Shan Wang
  • Zeng-Kun Liao
Article

DOI: 10.1007/BF00293514

Cite this article as:
Wang, CS. & Liao, ZK. Polymer Bulletin (1991) 25: 559. doi:10.1007/BF00293514

Summary

The content of total chlorine in o-cresol formaldehyde novolac epoxy resin (CNE), the main resin component for encapsulation formulation, affects the reliability of semi-conductor device greatly and it is one of the major criteria used by the electronic industry in measuring the quality of resins. A new process which synthesizes a high purity CNE with less than 300 ppm total chlorine content has been developed. This high purity resin has provided an extended device life under the accelerated stress test condition.

Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Chun-Shan Wang
    • 1
  • Zeng-Kun Liao
    • 2
  1. 1.Department of Chemical EngineeringNational Cheng Kung UniversityTainanTaiwan, Republic of China
  2. 2.Resins Research, Dow Chemical CompanyFreeportUSA