Title:
【発明の名称】繊維用ポリエステル樹脂の製造方法
Document Type and Number:
Japanese Patent JP2905291
Kind Code:
B2
Abstract:
PCT No. PCT/EP93/01447 Sec. 371 Date Apr. 11, 1994 Sec. 102(e) Date Apr. 11, 1994 PCT Filed Jun. 11, 1993 PCT Pub. No. WO93/25600 PCT Pub. Date Dec. 23, 1993Process for the production of polyester resins suitable for the manufacture of fibers including a phase of esterification of an aromatic dicarboxylic acid with an alkylenic glycol or of transesterification of a diester of the dicarboxylic acid with the alkylenic glycol, of polycondensation of diester obtained to form a prepolymer with intrinsic viscosity between 0.2 and 0.5 dl/g and, lastly, of polycondensation of the melt polymeric mass added with a dianhydride of a tetracarboxylic acid kept in agitation and on which an inert gas current is circulated.
Inventors:
ARU GATSUTA FUTSUSAIN ARI KASHIFU
PIZETSUTEII MARIO
PIZETSUTEII MARIO
Application Number:
JP50110794A
Publication Date:
June 14, 1999
Filing Date:
June 08, 1993
Export Citation:
Assignee:
SHINKO ENG SPA
International Classes:
C08G63/127; C08G63/20; C08G63/78; C08G63/181; D01F6/62; D01F6/84; (IPC1-7): C08G63/127; D01F6/84
Domestic Patent References:
| JP4505031A |
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)