GB1102638A - A process for the manufacture of articles from polyesters obtained by polymerizationof lactones - Google Patents
A process for the manufacture of articles from polyesters obtained by polymerizationof lactonesInfo
- Publication number
- GB1102638A GB1102638A GB3820966A GB3820966A GB1102638A GB 1102638 A GB1102638 A GB 1102638A GB 3820966 A GB3820966 A GB 3820966A GB 3820966 A GB3820966 A GB 3820966A GB 1102638 A GB1102638 A GB 1102638A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lactones
- pressure
- aug
- articles
- ethyl
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
1,102,638. Treating polylactones; moulding thermoplastics. SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ N.V. 25 Aug., 1966 [27 Aug., 1965], No. 38209/66. Heading B5A and B5B. An article is made from a linear polylactone having a crystallinity of at least 50% by subjecting the polymer, at a temperature below its m.p., to a mechanical pressure of such magnitude as to cause flow. The polymer may be a preformed article, e.g. a film, sheet, bar, or plate, or may be in powder or granule form which is moulded into a shape by the process of the invention, e.g. a plate, disc or tubular film. Preformed articles so treated are heatshrinkable. The pressure may be applied by rollers, by hammering, by pressure-moulds or by cold-extrusion presses. Specified lactones have two 1-4C alkyl groups on the α-carbon atom, e.g. α-methyl-α-ethyl-; α-methyl-α-isopropyl-; α,α-dimethyl-; and α-ethyl-α-n-butyl- #-propiolactones. Other compounds, e.g. expoxy compounds may be copolymerized with the lactones, which may themselves be homo- or copolymers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6511211A NL6511211A (en) | 1965-08-27 | 1965-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1102638A true GB1102638A (en) | 1968-02-07 |
Family
ID=19793991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3820966A Expired GB1102638A (en) | 1965-08-27 | 1966-08-25 | A process for the manufacture of articles from polyesters obtained by polymerizationof lactones |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE685972A (en) |
| DE (1) | DE1604737A1 (en) |
| GB (1) | GB1102638A (en) |
| NL (1) | NL6511211A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076983A (en) * | 1990-07-16 | 1991-12-31 | E. I. Du Pont De Nemours And Company | Polyhydroxy acid films |
-
1965
- 1965-08-27 NL NL6511211A patent/NL6511211A/xx unknown
-
1966
- 1966-08-25 GB GB3820966A patent/GB1102638A/en not_active Expired
- 1966-08-25 BE BE685972D patent/BE685972A/xx unknown
- 1966-08-25 DE DE19661604737 patent/DE1604737A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE685972A (en) | 1967-02-27 |
| NL6511211A (en) | 1967-02-28 |
| DE1604737A1 (en) | 1971-01-14 |
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