MY128872A - Process of continuously producing polyesters of copolyesters - Google Patents

Process of continuously producing polyesters of copolyesters

Info

Publication number
MY128872A
MY128872A MYPI20015735A MYPI20015735A MY128872A MY 128872 A MY128872 A MY 128872A MY PI20015735 A MYPI20015735 A MY PI20015735A MY PI20015735 A MYPI20015735 A MY PI20015735A MY 128872 A MY128872 A MY 128872A
Authority
MY
Malaysia
Prior art keywords
reaction pressure
pressure stage
stage
rectifying
last
Prior art date
Application number
MYPI20015735A
Inventor
Fritz Wilhelm
Michael Reisen
Original Assignee
Lurgi Zimmer Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lurgi Zimmer Gmbh filed Critical Lurgi Zimmer Gmbh
Publication of MY128872A publication Critical patent/MY128872A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

IN A PROCESS OF PRODUCING POLYESTERS AND COPOLYESTERS,A CONTINUOS ESTERIFICATION OF DICARBOXYLIC ESTERS AND DIOLS OR A CONTINUOUS TRANSESTERIFICATION OF DICARBOXYLIC ESTERS WITH DIOLS IS EFFECTED IN N RECATION PRESSURE STAGES CONNECTED IN SERIES, WHEREIN THE PRESSURE EXISTING IN THE FIRST REACTION PRESSURE STAGE, WHICH IS HIGHER AS COMPARED TO THE REMAINING REACTION PRESSURE STAGE TO REACTION PRESSURE STAGES, SUCCESSIVELY DECREASES FROM REACTION PRESSURE STAGE TO REACTION PRESSURE STAGE, THE COMBINED VAPOR FLOWS OF THE INDIVIDUAL REACTION PRESSURE STAGES ARE RECTIFIED IN A RECTIFYING COMLUN, AND THE DIOL COMPONENT OBTAINED AT THE BOTTOM OF THE RECTIFYING COMLUN IS RECIRCULATED AT LEAST TO THE FIRST REACTION PRESSURE STAGE. TO REDUCE THE TECHNICAL EFFORT IT IS PROVIDED THAT AT LEAST THE LAST RECATION PRESSURE STAGE HAS A VACUUM, THE PRESSURE IN THE RECTIFYING COLUMN IS LARGER THAN IN THE LAST REACTION PRESSURE STAGE,AND THE VAPORS DISCHARGED FROM THE LAST REACTION PRESSURE STAGE ARE CONDENSED TO THE PRESSURE EXISTING IN THE RECTIFYING COLUMN.(FIG 1)
MYPI20015735A 2000-12-21 2001-12-19 Process of continuously producing polyesters of copolyesters MY128872A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10064361 2000-12-21
DE10127147A DE10127147A1 (en) 2000-12-21 2001-06-02 Process for the continuous production of polyesters or copolyesters

Publications (1)

Publication Number Publication Date
MY128872A true MY128872A (en) 2007-02-28

Family

ID=7668509

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20015735A MY128872A (en) 2000-12-21 2001-12-19 Process of continuously producing polyesters of copolyesters

Country Status (4)

Country Link
KR (1) KR100732822B1 (en)
DE (2) DE10127147A1 (en)
MY (1) MY128872A (en)
SA (1) SA02220694B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007050929B4 (en) 2007-10-23 2012-10-25 Lurgi Zimmer Gmbh Method and apparatus for generating vacuum in the production of polyesters and copolyesters
KR102325729B1 (en) 2018-11-28 2021-11-15 주식회사 엘지화학 A Method for Manufacturing Terephthalate-based Composition Comprising Applying Pressure

Also Published As

Publication number Publication date
KR100732822B1 (en) 2007-06-27
DE50106349D1 (en) 2005-06-30
SA02220694B1 (en) 2006-07-09
KR20030068182A (en) 2003-08-19
DE10127147A1 (en) 2002-06-27

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