The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 1993
Filed:
May. 17, 1991
Mitsutoshi Aritomi, Mie, JP;
Haruo Ohmura, Mie, JP;
Hiroshi Nakano, Mie, JP;
Michiharu Kihira, Mie, JP;
Yusuke Arashiro, Mie, JP;
Fumiyoshi Yamada, Mie, JP;
Shinako Mori, Mie, JP;
Fumiyo Ikehata, Mie, JP;
Mitsubishi Petrochemical Co., Ltd., Tokyo, JP;
Abstract
A process for producing a terminal-modified polyphenylene ether represented by formula (III): ##STR1## wherein Q.sup.1 represents a halogen atom, a primary of secondary alkyl group, a phenyl group, an aminoalkyl group, a hydrocarbon oxy group, or a halo-hydrocarbon oxy group; Q.sup.2 represents a hydrogen atom, a halogen atom, a primary or secondary alkyl group, a phenyl group, a haloalkyl group, a hydrocarbon oxy group, or a halo-hydrocarbon oxy group; n represents an integer of at least 10; X represents an oxygen atom or a nitrogen atom;