GB1246064A - Process for the manufacture of high-molecular weight polyesters - Google Patents

Process for the manufacture of high-molecular weight polyesters

Info

Publication number
GB1246064A
GB1246064A GB5112269A GB5112269A GB1246064A GB 1246064 A GB1246064 A GB 1246064A GB 5112269 A GB5112269 A GB 5112269A GB 5112269 A GB5112269 A GB 5112269A GB 1246064 A GB1246064 A GB 1246064A
Authority
GB
United Kingdom
Prior art keywords
molecular weight
followed
weight polyesters
heating
polyesters
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
GB5112269A
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.)
Hoechst AG
Original Assignee
Farbwerke Hoechst 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 Farbwerke Hoechst AG filed Critical Farbwerke Hoechst AG
Publication of GB1246064A publication Critical patent/GB1246064A/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)

Abstract

1,246,064. Solid phase polymerization of polyesters. FARBWERKE HOECHST A.G. 17 Oct., 1969 [19 Oct., 1968], No. 51122/69. Heading C3R. High molecular weight polyesters e.g. polyethylene terephthalate are produced by heating low molecular weight polyesters by means of a high frequency electric field by which the polyester is crystallized and substantially dried at below the polycondensation temperature, followed by a solid phase polycondensation in known manner. The high frequency heating may be performed slowly, e.g. 5-5 mins. or rapidly in stages, e.g. rapidly to 100-180‹ C. followed by heating at a constant temperature in the absence of the field to complete crystallization, followed by an increase to the condensation temperature of about 200-250‹ C.
GB5112269A 1968-10-19 1969-10-17 Process for the manufacture of high-molecular weight polyesters Expired GB1246064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681804119 DE1804119A1 (en) 1968-10-19 1968-10-19 Process for the production of high molecular weight polyesters

Publications (1)

Publication Number Publication Date
GB1246064A true GB1246064A (en) 1971-09-15

Family

ID=5711000

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5112269A Expired GB1246064A (en) 1968-10-19 1969-10-17 Process for the manufacture of high-molecular weight polyesters

Country Status (6)

Country Link
AT (1) AT292316B (en)
BE (1) BE740520A (en)
DE (1) DE1804119A1 (en)
FR (1) FR2021090A1 (en)
GB (1) GB1246064A (en)
NL (1) NL6915226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0813549A1 (en) * 1995-03-03 1997-12-29 HOSOKAWA Bepex Corporation Radiant heater system for solid phase crystallization and polymerization of polymers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161578A (en) * 1978-05-12 1979-07-17 Bepex Corporation Process for solid phase polymerization of polyester
CH656391A5 (en) * 1982-04-21 1986-06-30 Inventa Ag METHOD FOR PRODUCING HIGH MOLECULAR POLYESTERS.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0813549A1 (en) * 1995-03-03 1997-12-29 HOSOKAWA Bepex Corporation Radiant heater system for solid phase crystallization and polymerization of polymers
EP0813549A4 (en) * 1995-03-03 1998-09-09 Hosokawa Bepex Corp Radiant heater system for solid phase crystallization and polymerization of polymers

Also Published As

Publication number Publication date
AT292316B (en) 1971-08-25
DE1804119A1 (en) 1970-06-11
FR2021090A1 (en) 1970-07-17
NL6915226A (en) 1970-04-21
BE740520A (en) 1970-04-20

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