Title:
【発明の名称】フッ素変性酸無水物及びその製造方法
Document Type and Number:
Japanese Patent JP2812133
Kind Code:
B2
Abstract:
Novel fluorine-modified acid anhydrides of formula (1) are useful curing agents typically in epoxy resin compositions for encapsulating semiconductor devices. (1) R1 is a hydrogen atom, substituted or unsubstituted monovalent hydrocarbon group, hydroxyl group, alkoxy group or alkenyloxy group. Rf is a divalent perfluoroalkylene or perfluoropolyether group of the general formula (2): (2) wherein l is an integer of 0 to 8, k and m are integers of 0 to 15, j and n are 0 or 1, with the proviso that j, k, l, m and n are not equal to 0 at the same time.
Inventors:
Toshio Shiobara
Koji Nimori
Kazuhiro Arai
Shimizu Kuji
Shigeki Ino
Koji Nimori
Kazuhiro Arai
Shimizu Kuji
Shigeki Ino
Application Number:
JP8820193A
Publication Date:
October 22, 1998
Filing Date:
March 23, 1993
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd.
International Classes:
C07F7/08; C07F7/12; (IPC1-7): C07F7/12
Attorney, Agent or Firm:
Takashi Kojima