GB1249793A - Polymerization of pivalolactone - Google Patents

Polymerization of pivalolactone

Info

Publication number
GB1249793A
GB1249793A GB312770A GB312770A GB1249793A GB 1249793 A GB1249793 A GB 1249793A GB 312770 A GB312770 A GB 312770A GB 312770 A GB312770 A GB 312770A GB 1249793 A GB1249793 A GB 1249793A
Authority
GB
United Kingdom
Prior art keywords
pivalolactone
diluent
jan
iodide
quaternary ammonium
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
GB312770A
Inventor
Franciscus Johannes Frede Plas
Willem Marius Wagner
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB1249793A publication Critical patent/GB1249793A/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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1,249,793. Polycondensation of pivalolactone. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 22 Jan., 1970 [24 Jan., 1969], No. 3127/70. Heading C3R. Polyesters are made by polycondensing lactone monomers containing at least 95% by wt. of pivalolactone in a liquid diluent in the presence of, as an initiator, a quaternary ammonium salt which has a solubility in the diluent, at the polymerization temperature of not greater than 50 mgms./100 mls. The diluent is preferably a hydrocarbon. Quaternary ammonium salts of strong mineral acids are preferred and in the examples tetraethylene ammonium chloride, bromide and iodide, and tetrabutyl ammonium iodide are used.
GB312770A 1969-01-24 1970-01-22 Polymerization of pivalolactone Expired GB1249793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6901177A NL6901177A (en) 1969-01-24 1969-01-24

Publications (1)

Publication Number Publication Date
GB1249793A true GB1249793A (en) 1971-10-13

Family

ID=19805958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB312770A Expired GB1249793A (en) 1969-01-24 1970-01-22 Polymerization of pivalolactone

Country Status (6)

Country Link
BE (1) BE744807A (en)
CH (1) CH530431A (en)
DE (1) DE2002846A1 (en)
FR (1) FR2029042A1 (en)
GB (1) GB1249793A (en)
NL (1) NL6901177A (en)

Also Published As

Publication number Publication date
FR2029042A1 (en) 1970-10-16
BE744807A (en) 1970-07-22
CH530431A (en) 1972-11-15
NL6901177A (en) 1970-07-28
DE2002846A1 (en) 1970-10-01

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