IE40717B1 - Process for the preparation of trioxane copolymers - Google Patents
Process for the preparation of trioxane copolymersInfo
- Publication number
- IE40717B1 IE40717B1 IE2598/74A IE259874A IE40717B1 IE 40717 B1 IE40717 B1 IE 40717B1 IE 2598/74 A IE2598/74 A IE 2598/74A IE 259874 A IE259874 A IE 259874A IE 40717 B1 IE40717 B1 IE 40717B1
- Authority
- IE
- Ireland
- Prior art keywords
- trioxan
- dec
- carried out
- addition
- bulk
- Prior art date
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.
[GB1480536A]
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 (2)
| Publication Number | Publication Date |
|---|---|
| IE40717L IE40717L (en) | 1975-06-18 |
| IE40717B1 true IE40717B1 (en) | 1979-08-01 |
Family
ID=5901071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE2598/74A IE40717B1 (en) | 1973-12-18 | 1974-12-17 | 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 CH CH1665274A patent/CH606162A5/xx not_active IP Right Cessation
- 1974-12-13 NL NL7416269A patent/NL7416269A/en not_active Application Discontinuation
- 1974-12-16 IT IT30620/74A patent/IT1049339B/en active
- 1974-12-16 GB GB54160/74A patent/GB1480536A/en not_active Expired
- 1974-12-16 LU LU71496A patent/LU71496A1/xx unknown
- 1974-12-17 IE IE2598/74A patent/IE40717B1/en unknown
- 1974-12-17 DK DK657274A patent/DK657274A/da unknown
- 1974-12-17 CA CA216,630A patent/CA1015890A/en not_active Expired
- 1974-12-17 JP JP49144169A patent/JPS5848565B2/en not_active Expired
- 1974-12-17 SE SE7415850A patent/SE7415850L/xx unknown
- 1974-12-17 ZA ZA00747999A patent/ZA747999B/en unknown
- 1974-12-17 AT AT1006874A patent/AT341777B/en active
- 1974-12-17 BR BR10551/74A patent/BR7410551D0/en unknown
- 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 |
|---|---|
| JPS5848565B2 (en) | 1983-10-29 |
| BR7410551D0 (en) | 1975-09-02 |
| SE7415850L (en) | 1975-06-19 |
| FR2254592B2 (en) | 1979-08-10 |
| AT341777B (en) | 1978-02-27 |
| CH606162A5 (en) | 1978-10-31 |
| ZA747999B (en) | 1976-01-28 |
| GB1480536A (en) | 1977-07-20 |
| BE823518R (en) | 1975-06-18 |
| NL7416269A (en) | 1975-06-20 |
| AU7645174A (en) | 1976-06-17 |
| LU71496A1 (en) | 1976-11-11 |
| DE2362791C2 (en) | 1982-07-01 |
| DK657274A (en) | 1975-08-25 |
| ATA1006874A (en) | 1977-06-15 |
| FR2254592A2 (en) | 1975-07-11 |
| CA1015890A (en) | 1977-08-16 |
| IE40717L (en) | 1975-06-18 |
| IT1049339B (en) | 1981-01-20 |
| JPS5092990A (en) | 1975-07-24 |
| DE2362791A1 (en) | 1975-06-26 |
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