AT301882B - Verfahren zur Entgasung von β-Lactonpolymerisaten - Google Patents

Verfahren zur Entgasung von β-Lactonpolymerisaten

Info

Publication number
AT301882B
AT301882B AT813069A AT813069A AT301882B AT 301882 B AT301882 B AT 301882B AT 813069 A AT813069 A AT 813069A AT 813069 A AT813069 A AT 813069A AT 301882 B AT301882 B AT 301882B
Authority
AT
Austria
Prior art keywords
degassing
lactone polymers
lactone
polymers
Prior art date
Application number
AT813069A
Other languages
German (de)
English (en)
Original Assignee
Shell Int Research
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
Priority claimed from GB4071668A external-priority patent/GB1197368A/en
Priority claimed from GB4071568A external-priority patent/GB1197367A/en
Application filed by Shell Int Research filed Critical Shell Int Research
Application granted granted Critical
Publication of AT301882B publication Critical patent/AT301882B/de

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
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
    • C08G63/08—Lactones or lactides
    • 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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
AT813069A 1968-08-26 1969-08-25 Verfahren zur Entgasung von β-Lactonpolymerisaten AT301882B (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4071668A GB1197368A (en) 1968-08-26 1968-08-26 Process for the manufacture of Nibs from a Polymer of a beta-Lactone
GB4071568A GB1197367A (en) 1968-08-26 1968-08-26 Process for the manufacture of Articles from a Polymer of a beta-Lactone

Publications (1)

Publication Number Publication Date
AT301882B true AT301882B (de) 1972-09-25

Family

ID=26264487

Family Applications (1)

Application Number Title Priority Date Filing Date
AT813069A AT301882B (de) 1968-08-26 1969-08-25 Verfahren zur Entgasung von β-Lactonpolymerisaten

Country Status (9)

Country Link
US (1) US3621003A (OSRAM)
AT (1) AT301882B (OSRAM)
BE (1) BE737927A (OSRAM)
CH (1) CH522010A (OSRAM)
DE (1) DE1943182C3 (OSRAM)
ES (1) ES370816A1 (OSRAM)
FR (1) FR2016389B1 (OSRAM)
NL (2) NL6912914A (OSRAM)
SE (1) SE349822B (OSRAM)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890283A (en) * 1973-06-04 1975-06-17 American Cyanamid Co Process for post-polymerizing polyglycolic acid
JP2714454B2 (ja) * 1988-11-07 1998-02-16 三井東圧化学株式会社 生体吸収性ポリエステルの製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235127A (en) * 1938-09-21 1941-03-18 Standard Oil Dev Co Process for removing volatile solvents from polymerized substances
US2719776A (en) * 1949-11-23 1955-10-04 Inventa Ag Elimination of monomers from lactampolymerization products
US2833750A (en) * 1953-06-17 1958-05-06 Exxon Research Engineering Co Method for finishing polymers
US3156009A (en) * 1960-12-30 1964-11-10 Standard Oil Co Devolatilizing extruder
GB1072674A (en) * 1963-08-08 1967-06-21 Calumet & Hecla Catalytic oxidation of exhaust gases
US3469618A (en) * 1964-10-30 1969-09-30 Snia Viscosa Solvent removal from polymeric materials
NL6508040A (OSRAM) * 1965-06-23 1966-12-27

Also Published As

Publication number Publication date
FR2016389A1 (OSRAM) 1970-05-08
NL6912914A (OSRAM) 1970-03-02
SE349822B (OSRAM) 1972-10-09
ES370816A1 (es) 1971-07-01
NL137352C (OSRAM)
DE1943182A1 (de) 1970-03-05
DE1943182B2 (de) 1973-05-17
BE737927A (OSRAM) 1970-02-25
US3621003A (en) 1971-11-16
CH522010A (de) 1972-04-30
DE1943182C3 (de) 1974-01-10
FR2016389B1 (OSRAM) 1975-09-26

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