GB1480536A - Process for the preparation of trioxane copolymers - Google Patents
Process for the preparation of trioxane copolymersInfo
- Publication number
- GB1480536A GB1480536A GB54160/74A GB5416074A GB1480536A GB 1480536 A GB1480536 A GB 1480536A GB 54160/74 A GB54160/74 A GB 54160/74A GB 5416074 A GB5416074 A GB 5416074A GB 1480536 A GB1480536 A GB 1480536A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trioxan
- dec
- carried out
- addition
- bulk
- 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
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/18—Copolymerisation of aldehydes or ketones
- C08G2/24—Copolymerisation of aldehydes or ketones with acetals
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
1480536 Trioxan bulk copolymerization procedure HOECHST AG 16 Dec 1974 [18 Dec 1973] 54160/74 Addition to 1444789 Heading C3P Trioxan is bulk copolymerized with up to 10% of a cyclic acetal by (a) mixing the monomers and a cationic catalyst at 62‹ to 115‹ C., (b) cooling the liquid mixture obtained sufficiently rapidly that solidification occurs without the liquid mixture becoming turbid, and (c) heating the solid mixture at 62‹ to 130‹ C. while maintaining it in the solid state, to effect polymerization, the step (b), at least, being carried out in a double-screw extruder. Preferably all three stages are carried out in different zones of a single extruder; the final step (c) may be completed in a screw conveyer. The catalyst may be diluted with gaseous or liquid diluents, while the resulting polymers may be stabilized by hydrolytic or thermal degradation and/or by the addition of stabilizers prior to use as a moulding composition. Examples refer to trioxandioxolan copolymerization in the presence of methylol as regulator and of BF 3 .Bu 2 O.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2362791A DE2362791C2 (en) | 1973-12-18 | 1973-12-18 | Process for the preparation of copolymers of trioxane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1480536A true GB1480536A (en) | 1977-07-20 |
Family
ID=5901071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB54160/74A Expired GB1480536A (en) | 1973-12-18 | 1974-12-16 | Process for the preparation of trioxane copolymers |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5848565B2 (en) |
| AT (1) | AT341777B (en) |
| BE (1) | BE823518R (en) |
| BR (1) | BR7410551D0 (en) |
| CA (1) | CA1015890A (en) |
| CH (1) | CH606162A5 (en) |
| DE (1) | DE2362791C2 (en) |
| DK (1) | DK657274A (en) |
| FR (1) | FR2254592B2 (en) |
| GB (1) | GB1480536A (en) |
| IE (1) | IE40717B1 (en) |
| IT (1) | IT1049339B (en) |
| LU (1) | LU71496A1 (en) |
| NL (1) | NL7416269A (en) |
| SE (1) | SE7415850L (en) |
| ZA (1) | ZA747999B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5740520A (en) * | 1980-08-22 | 1982-03-06 | Polyplastics Co | Continuous polymerization |
| JPS59115318A (en) * | 1982-12-21 | 1984-07-03 | Ube Ind Ltd | Production of formaldehyde copolymer |
| DE4431575A1 (en) * | 1994-09-05 | 1996-03-07 | Hoechst Ag | Process for the preparation of polyacetal copolymers |
-
1973
- 1973-12-18 DE DE2362791A patent/DE2362791C2/en not_active Expired
-
1974
- 1974-12-13 NL NL7416269A patent/NL7416269A/en not_active Application Discontinuation
- 1974-12-13 CH CH1665274A patent/CH606162A5/xx not_active IP Right Cessation
- 1974-12-16 LU LU71496A patent/LU71496A1/xx unknown
- 1974-12-16 IT IT30620/74A patent/IT1049339B/en active
- 1974-12-16 GB GB54160/74A patent/GB1480536A/en not_active Expired
- 1974-12-17 SE SE7415850A patent/SE7415850L/xx unknown
- 1974-12-17 DK DK657274A patent/DK657274A/da unknown
- 1974-12-17 AT AT1006874A patent/AT341777B/en active
- 1974-12-17 ZA ZA00747999A patent/ZA747999B/en unknown
- 1974-12-17 IE IE2598/74A patent/IE40717B1/en unknown
- 1974-12-17 BR BR10551/74A patent/BR7410551D0/en unknown
- 1974-12-17 CA CA216,630A patent/CA1015890A/en not_active Expired
- 1974-12-17 JP JP49144169A patent/JPS5848565B2/en not_active Expired
- 1974-12-18 BE BE151646A patent/BE823518R/en active
- 1974-12-18 FR FR7441778A patent/FR2254592B2/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IE40717B1 (en) | 1979-08-01 |
| BE823518R (en) | 1975-06-18 |
| JPS5092990A (en) | 1975-07-24 |
| ATA1006874A (en) | 1977-06-15 |
| AU7645174A (en) | 1976-06-17 |
| LU71496A1 (en) | 1976-11-11 |
| DE2362791A1 (en) | 1975-06-26 |
| BR7410551D0 (en) | 1975-09-02 |
| NL7416269A (en) | 1975-06-20 |
| CA1015890A (en) | 1977-08-16 |
| IE40717L (en) | 1975-06-18 |
| JPS5848565B2 (en) | 1983-10-29 |
| DE2362791C2 (en) | 1982-07-01 |
| FR2254592A2 (en) | 1975-07-11 |
| ZA747999B (en) | 1976-01-28 |
| CH606162A5 (en) | 1978-10-31 |
| AT341777B (en) | 1978-02-27 |
| SE7415850L (en) | 1975-06-19 |
| FR2254592B2 (en) | 1979-08-10 |
| DK657274A (en) | 1975-08-25 |
| IT1049339B (en) | 1981-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |