Title:
PRODUCTION OF WHOLLY AROMATIC POLYESTER
Document Type and Number:
Japanese Patent JPH0258531
Kind Code:
A
Abstract:
PURPOSE:To obtain the title polyester by bulk polycondensation accompanying deoxidation in a reaction tank made of an alloy excellent in both corrosion resistance and durability to protect the final product itself from contamination due to the corrosion and to retain the quality of the product. CONSTITUTION:A dicarboxylic acid compound and diol compound or these compound and/or a hydroxycarboxylic acid compound and an acid anhydride are made to react in a reaction tank made of an alloy made up of (A) 2-50wt.% of Cr, (B) 1-17wt.% of Mo, (C) 1-30wt.% of at least one kind element selected from Fe, W and Co, and (D) the rest of Ni (e.g., Hastelloy C) to carry out bulk polymerization, thus obtaining the objective wholly aromatic polyester.
Inventors:
SUENAGA YUSAKU
ISHIKAWA TOMOHIRO
KONDO YOZO
KATO MASATOSHI
SAKAKI TAKASHI
ISHIKAWA TOMOHIRO
KONDO YOZO
KATO MASATOSHI
SAKAKI TAKASHI
Application Number:
JP20956588A
Publication Date:
February 27, 1990
Filing Date:
August 25, 1988
Export Citation:
Assignee:
TOSOH CORP
International Classes:
C08G63/19; C08G63/60; (IPC1-7): C08G63/19; C08G63/60
Next Patent: JPH0258532