GB1138793A - Polymerisation of beta-lactones - Google Patents
Polymerisation of beta-lactonesInfo
- Publication number
- GB1138793A GB1138793A GB4330367A GB4330367A GB1138793A GB 1138793 A GB1138793 A GB 1138793A GB 4330367 A GB4330367 A GB 4330367A GB 4330367 A GB4330367 A GB 4330367A GB 1138793 A GB1138793 A GB 1138793A
- Authority
- GB
- United Kingdom
- Prior art keywords
- beta
- alkali metal
- molecular weight
- lactones
- diluent
- 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
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
1,138,793. Polymerizing beta - lactones. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 22 Sept., 1967, No. 43303/67. Heading C3R. Polyesters are made by polymerizing (preferably at 0‹ to 150‹ C.) one or more beta-lactones, at least 50 mole per cent being pivalactone, in a liquid hydrocarbon diluent having a boiling point of below 300‹ C. and in the presence of a solid carboxylate anion-containing initiator at least 80% by weight of which has a particle size of not more than 200 microns but larger than 5 microns. The initiator is substantially insoluble in the diluent, is free from active hydrogen atoms and is either (a) a preformed betaine having a molecular weight below 30,000 and in which the cation may be, e.g. ammonium, pyridinium, morpholinium, phosphonium, arsonium, stibonium or sulphonium, or (b) a " living " prepolymer having a molecular weight of 200 to 30,000 and which has been obtained by reacting a beta-lactone with a nucleophilic agent in a molar ratio of between 20 : 1 and 1 : 40, suitable initiators being phosphines, stibines, arsines, amines, sulphides, sulphoxides, an alkali metal salt, an alkali metal phenolate, thiophenolate, alcoholate or mercaptide, an alkali metal alkyl or aryl, a quaternary phosphonium, stibonium, arsonium, ammonium salt or a tertiary sulphonium compound. Preferably the " living " prepolymers are prepared in an inert fluid diluent and in the presence of a surface-active substance having a hydrocarbon chain with a molecular weight of at least 200 and having one or more hydroxyl, amino, carbonamido or imido groups.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4330367A GB1138793A (en) | 1967-09-22 | 1967-09-22 | Polymerisation of beta-lactones |
NL6813398A NL6813398A (en) | 1967-09-22 | 1968-09-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4330367A GB1138793A (en) | 1967-09-22 | 1967-09-22 | Polymerisation of beta-lactones |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1138793A true GB1138793A (en) | 1969-01-01 |
Family
ID=10428168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4330367A Expired GB1138793A (en) | 1967-09-22 | 1967-09-22 | Polymerisation of beta-lactones |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1138793A (en) |
NL (1) | NL6813398A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2216312A1 (en) * | 1973-02-06 | 1974-08-30 | Eastman Kodak Co | |
EP2454017B1 (en) * | 2009-07-16 | 2015-03-18 | Elantas GmbH | Reactive systems |
-
1967
- 1967-09-22 GB GB4330367A patent/GB1138793A/en not_active Expired
-
1968
- 1968-09-19 NL NL6813398A patent/NL6813398A/xx unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2216312A1 (en) * | 1973-02-06 | 1974-08-30 | Eastman Kodak Co | |
EP2454017B1 (en) * | 2009-07-16 | 2015-03-18 | Elantas GmbH | Reactive systems |
US9056927B2 (en) | 2009-07-16 | 2015-06-16 | Elantas Gmbh | Reactive systems |
RU2562240C2 (en) * | 2009-07-16 | 2015-09-10 | Элантас Гмбх | Reactive systems |
Also Published As
Publication number | Publication date |
---|---|
NL6813398A (en) | 1969-03-25 |
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