GB777128A - Process for the manufacture of polyesters of terephthalic acid - Google Patents

Process for the manufacture of polyesters of terephthalic acid

Info

Publication number
GB777128A
GB777128A GB2374554A GB2374554A GB777128A GB 777128 A GB777128 A GB 777128A GB 2374554 A GB2374554 A GB 2374554A GB 2374554 A GB2374554 A GB 2374554A GB 777128 A GB777128 A GB 777128A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
terephthalate
water
terephthalic acid
ethylene oxide
group iv
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB2374554A
Inventor
Neil Munro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78Preparation processes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78Preparation processes
    • C08G63/82Preparation processes characterised by the catalyst used

Abstract

Fibre-forming polyethylene terephthalate is made by heating mono-hydroxyethyl terephthalate at a temperature above its melting point and preferably under reduced pressure. A small amount of a diol, e.g. bis-(betahydroxyethyl) terephthalate, may be added to the monohydroxyethyl terephthalate before polymerizing. The mono-hydroxyethyl ester is made by reacting ethylene oxide with terephthalic acid in an aqueous medium (see Group IV (b). Specifications 590,451, [Group IV], and 623,669, [Group IV (b)], are referred to.ALSO:Monohydroxyethyl terephthalate is made by reacting ethylene oxide with terephthalic acid in an aqueous medium, preferably in presence of sufficient of a base or an alkaline reacting salt of an alkali metal to convert all the terephthalic acid to the mono alkali metal salt. As a catalyst a terephthalate may be used, e.g. a terephthalate of an alkali metal, ammonium, pyridine or N,N-dimethylaniline. The catalyst may be formed in situ by interaction of a proportion of the terephthalic acid with a substance which forms a water-soluble terephthalate therewith, e.g. sodium or potassium hydroxide, sodium borate, ammonia, ammonium salts or amines. In the example, 1 mol. of terephthalic acid suspended in water containing 1 mol. of potassium hydroxide was heated in a water bath and saturated with ethylene oxide till complete solution was obtained. After boiling off the residual ethylene oxide the solution was cooled and sulphuric acid and water added to give a paste. This was filtered off, water washed and extracted with boiling water. The crude monohydroxyethyl terephthalate which separated on cooling the extract was recrystallized from water. Specifications 590,451, [Group IV], and 623,669 are referred to.
GB2374554A 1954-08-16 1954-08-16 Process for the manufacture of polyesters of terephthalic acid Expired GB777128A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1127734X 1954-08-16
GB2374554A GB777128A (en) 1954-08-16 1954-08-16 Process for the manufacture of polyesters of terephthalic acid

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
BE540550A BE540550A (en) 1954-08-16
NL89292C NL89292C (en) 1954-08-16
NL198897A NL198897A (en) 1954-08-16
GB2374554A GB777128A (en) 1954-08-16 1954-08-16 Process for the manufacture of polyesters of terephthalic acid
FR1127734A FR1127734A (en) 1954-08-16 1955-07-18 Polyesters method of manufacturing terephthalic acid

Publications (1)

Publication Number Publication Date
GB777128A true true GB777128A (en) 1957-06-19

Family

ID=26256694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2374554A Expired GB777128A (en) 1954-08-16 1954-08-16 Process for the manufacture of polyesters of terephthalic acid

Country Status (4)

Country Link
BE (1) BE540550A (en)
FR (1) FR1127734A (en)
GB (1) GB777128A (en)
NL (2) NL89292C (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005092950A1 (en) * 2004-03-04 2005-10-06 Eastman Chemical Company Process for the production of a polyester product from alkylene oxide and carboxylic acid
US7649109B2 (en) 2006-12-07 2010-01-19 Eastman Chemical Company Polyester production system employing recirculation of hot alcohol to esterification zone
US7718759B2 (en) 2000-12-07 2010-05-18 Eastman Chemical Company Polyester process using a pipe reactor
US7829653B2 (en) 2007-07-12 2010-11-09 Eastman Chemical Company Horizontal trayed reactor
US7842777B2 (en) 2007-07-12 2010-11-30 Eastman Chemical Company Sloped tubular reactor with divided flow
US7847053B2 (en) 2007-07-12 2010-12-07 Eastman Chemical Company Multi-level tubular reactor with oppositely extending segments
US7858730B2 (en) 2007-07-12 2010-12-28 Eastman Chemical Company Multi-level tubular reactor with dual headers
US7863477B2 (en) 2007-03-08 2011-01-04 Eastman Chemical Company Polyester production system employing hot paste to esterification zone
US7868129B2 (en) 2007-07-12 2011-01-11 Eastman Chemical Company Sloped tubular reactor with spaced sequential trays
US7868130B2 (en) 2007-07-12 2011-01-11 Eastman Chemical Company Multi-level tubular reactor with vertically spaced segments
US7872089B2 (en) 2007-07-12 2011-01-18 Eastman Chemical Company Multi-level tubular reactor with internal tray
US7872090B2 (en) 2007-07-12 2011-01-18 Eastman Chemical Company Reactor system with optimized heating and phase separation
US7892498B2 (en) 2007-03-08 2011-02-22 Eastman Chemical Company Polyester production system employing an unagitated esterification reactor
US7943094B2 (en) 2006-12-07 2011-05-17 Grupo Petrotemex, S.A. De C.V. Polyester production system employing horizontally elongated esterification vessel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355154A (en) * 1981-10-06 1982-10-19 Dow Corning Corporation Method for preparing condensation polymers by emulsion polymerization

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7718759B2 (en) 2000-12-07 2010-05-18 Eastman Chemical Company Polyester process using a pipe reactor
US8114954B2 (en) 2000-12-07 2012-02-14 Grupo Petrotemex, S.A. De C.V. Polyester process using a pipe reactor
US7842778B2 (en) 2000-12-07 2010-11-30 Eastman Chemical Company Polyester process using a pipe reactor
WO2005092950A1 (en) * 2004-03-04 2005-10-06 Eastman Chemical Company Process for the production of a polyester product from alkylene oxide and carboxylic acid
CN100503685C (en) 2004-03-04 2009-06-24 伊士曼化工公司 Process for production of a polyester product from alkylene oxide and carboxylic acid
US7649109B2 (en) 2006-12-07 2010-01-19 Eastman Chemical Company Polyester production system employing recirculation of hot alcohol to esterification zone
US7943094B2 (en) 2006-12-07 2011-05-17 Grupo Petrotemex, S.A. De C.V. Polyester production system employing horizontally elongated esterification vessel
US8470250B2 (en) 2006-12-07 2013-06-25 Grupo Petrotemex, S.A. De C.V. Polyester production system employing horizontally elongated esterification vessel
US7892498B2 (en) 2007-03-08 2011-02-22 Eastman Chemical Company Polyester production system employing an unagitated esterification reactor
US7863477B2 (en) 2007-03-08 2011-01-04 Eastman Chemical Company Polyester production system employing hot paste to esterification zone
US7847053B2 (en) 2007-07-12 2010-12-07 Eastman Chemical Company Multi-level tubular reactor with oppositely extending segments
US7868129B2 (en) 2007-07-12 2011-01-11 Eastman Chemical Company Sloped tubular reactor with spaced sequential trays
US7872089B2 (en) 2007-07-12 2011-01-18 Eastman Chemical Company Multi-level tubular reactor with internal tray
US7872090B2 (en) 2007-07-12 2011-01-18 Eastman Chemical Company Reactor system with optimized heating and phase separation
US7858730B2 (en) 2007-07-12 2010-12-28 Eastman Chemical Company Multi-level tubular reactor with dual headers
US7842777B2 (en) 2007-07-12 2010-11-30 Eastman Chemical Company Sloped tubular reactor with divided flow
US7829653B2 (en) 2007-07-12 2010-11-09 Eastman Chemical Company Horizontal trayed reactor
US7868130B2 (en) 2007-07-12 2011-01-11 Eastman Chemical Company Multi-level tubular reactor with vertically spaced segments

Also Published As

Publication number Publication date Type
BE540550A (en) grant
NL89292C (en) grant
NL198897A (en) application
FR1127734A (en) 1956-12-24 grant

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