GB1402071A - Process for the solid phase condensation of polyesters - Google Patents

Process for the solid phase condensation of polyesters

Info

Publication number
GB1402071A
GB1402071A GB1493873A GB1493873A GB1402071A GB 1402071 A GB1402071 A GB 1402071A GB 1493873 A GB1493873 A GB 1493873A GB 1493873 A GB1493873 A GB 1493873A GB 1402071 A GB1402071 A GB 1402071A
Authority
GB
United Kingdom
Prior art keywords
solid phase
phase condensation
filaments
march
precondensate
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
GB1493873A
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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB1402071A publication Critical patent/GB1402071A/en
Expired legal-status Critical Current

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
    • C08G63/80—Solid-state polycondensation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Artificial Filaments (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1402071 Solid phase condensation CIBAGEIGY AG 28 March 1973 [30 March 1972] 14938/73 Heading C3R A cooled precondensate melt of polybutylene terephthalate (at least 95% of the units consisting of terephthalic acid and 1 : 4 butanediol) is communuted, its water content, if present is reduced to at most 0À5% by weight, and the resulting particles are heated without drying and precrystallization ot 5-60‹ C. below the melting point of the precondensate. The melt may be extruded into filaments. Examples describe the initial polymerization, followed by extrusion, breakdown of filaments into granules and monitoring of further polymerization by in trinsic viscosity data.
GB1493873A 1972-03-30 1973-03-28 Process for the solid phase condensation of polyesters Expired GB1402071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT277072A AT324711B (en) 1972-03-30 1972-03-30 PROCESS FOR THE SOLID PHASE CONDENSATION OF POLYBUTYLENE TEREPHTHALATE

Publications (1)

Publication Number Publication Date
GB1402071A true GB1402071A (en) 1975-08-06

Family

ID=3540016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1493873A Expired GB1402071A (en) 1972-03-30 1973-03-28 Process for the solid phase condensation of polyesters

Country Status (6)

Country Link
JP (1) JPS4916794A (en)
AT (1) AT324711B (en)
CH (1) CH566356A5 (en)
DE (1) DE2315272B2 (en)
FR (1) FR2178167B1 (en)
GB (1) GB1402071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5709916A (en) * 1995-07-27 1998-01-20 Teijin Limited Polybutylene terephthalate having low carboxyl group concentration and loose tube for optical fiber comprising the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124697A (en) * 1974-08-26 1976-02-28 Mitsubishi Chem Ind Horiesuteruno seizoho
US4049635A (en) * 1976-01-19 1977-09-20 Phillips Petroleum Company Production of tetramethylene terephthalate polymers using 225° to 248° C. polycondensation temperature
DE2627869C2 (en) * 1976-06-22 1982-10-21 Dynamit Nobel Ag, 5210 Troisdorf Process for the production of filler-reinforced polyalkylene terephthalate molding compositions
JPS58176212A (en) * 1982-04-09 1983-10-15 Teijin Ltd Polyester for molding and its production

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463760A (en) * 1966-12-01 1969-08-26 Eastman Kodak Co Method for cooling molten polyester prepolymer
BE709968A (en) * 1967-01-30 1968-05-30
GB1318449A (en) * 1969-09-30 1973-05-31 Goodyear Tire & Rubber Solid state polymerization of linear polyester resins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5709916A (en) * 1995-07-27 1998-01-20 Teijin Limited Polybutylene terephthalate having low carboxyl group concentration and loose tube for optical fiber comprising the same

Also Published As

Publication number Publication date
CH566356A5 (en) 1975-09-15
FR2178167A1 (en) 1973-11-09
DE2315272B2 (en) 1981-07-23
AT324711B (en) 1975-09-10
FR2178167B1 (en) 1976-09-10
JPS4916794A (en) 1974-02-14
DE2315272A1 (en) 1973-11-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee