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GB977230A - Polyesters from ªŠ-caprolactones - Google Patents

Polyesters from ªŠ-caprolactones

Info

Publication number
GB977230A
GB977230A GB43666/62A GB4366662A GB977230A GB 977230 A GB977230 A GB 977230A GB 43666/62 A GB43666/62 A GB 43666/62A GB 4366662 A GB4366662 A GB 4366662A GB 977230 A GB977230 A GB 977230A
Authority
GB
United Kingdom
Prior art keywords
group
cycloalkyl
alkyl
hydrogen
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
GB43666/62A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB977230A publication Critical patent/GB977230A/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
    • C08G63/82—Preparation processes characterised by the catalyst used
    • C08G63/823—Preparation processes characterised by the catalyst used for the preparation of polylactones or polylactides

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

Polyesters, suitable for the manufacture of filaments and foils and having a molecular weight of at least 30,000 are made by polymerizing an epsilon-caprolactone in the presence of an organometallic compound of a metal of Group I (alkali metal sub-group), Group IIA, Group IIB or Group III (boron sub-group) of the Periodic Table. The lactones preferably have the formula <FORM:0977230/C3/1> where R is hydrogen or an alkyl, cycloalkyl, alkoxy or aryl radical and R1 is hydrogen or an alkyl, cycloalkyl or aryl radical. Preferred organometallic compounds are the alkyl-, cycloalkyl-, aralkyl- and aryl-compound of Li, Na, K, Mg, Be, Zn, Cd, Al and B. In the case of the polyvalent metals, some of the hydrocarbon radicals may be replaced by halogen atoms. Polymerization is effected at 0 DEG -120 DEG C. in bulk or in the presence of a solvent (e.g. a hydrocarbon. a dialkyl ether, tetrahydrofuran or dioxane), Specifications 859,639 and 859,644 are referred to.
GB43666/62A 1961-11-27 1962-11-19 Polyesters from ªŠ-caprolactones Expired GB977230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF35418A DE1246241B (en) 1961-11-27 1961-11-27 Process for the production of polyesters by polymerizing epsilon-caprolactones

Publications (1)

Publication Number Publication Date
GB977230A true GB977230A (en) 1964-12-02

Family

ID=7095992

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43666/62A Expired GB977230A (en) 1961-11-27 1962-11-19 Polyesters from ªŠ-caprolactones

Country Status (3)

Country Link
DE (1) DE1246241B (en)
FR (1) FR1339468A (en)
GB (1) GB977230A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778251A (en) * 1971-03-17 1973-12-11 Bixby Box Toe Co Inc Shoe stiffener materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778251A (en) * 1971-03-17 1973-12-11 Bixby Box Toe Co Inc Shoe stiffener materials

Also Published As

Publication number Publication date
FR1339468A (en) 1963-10-04
DE1246241B (en) 1967-08-03

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