GB1444789A - - Google Patents
Info
- Publication number
- GB1444789A GB1444789A GB5911973A GB5911973A GB1444789A GB 1444789 A GB1444789 A GB 1444789A GB 5911973 A GB5911973 A GB 5911973A GB 5911973 A GB5911973 A GB 5911973A GB 1444789 A GB1444789 A GB 1444789A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- trioxan
- dioxolan
- dec
- carried out
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00162—Controlling or regulating processes controlling the pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00168—Controlling or regulating processes controlling the viscosity
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
1444789 Trioxan bulk copolymerization procedure HOECHST AG 20 Dec 1973 [23 Dec 1972] 59119/73 Heading C3P Trioxane-cyclic acetal copolymers are obtained by (a) forming a mixture of the monomers (at least 90% trioxan) and a cationic catalyst by mixing at 62‹ to 115‹ C. to give a homogeneous liquid mixture, (b) cooling the mixture sufficiently rapidly that solidification occurs without the liquid mixture becoming turbid, and (c) polymerizing the solid mixture thereby produced by heating to a temperature of 62‹ to 130‹ C. while maintaining it in the solid state. Step (b) may be carried out by contacting the mixture in the form of a thin film with cooled surfaces, or by contact with cooled extruders or kneaders. 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 the copolymerization of trioxan with dioxolan, 1,3-dioxan, 1,3-dioxepane, or 4-methyl-1,3-dioxolan, in the presence of methylal as regulator and BF 3 .Et 2 O, HClO 4 , BF 3 or Pl 3 C.PF 6 as catalysts, using the specified technique, the process being carried out in a collapsible aluminium tube.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2263300A DE2263300C3 (en) | 1972-12-23 | 1972-12-23 | Process for the preparation of copolymers of trioxane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1444789A true GB1444789A (en) | 1976-08-04 |
Family
ID=5865392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5911973A Expired GB1444789A (en) | 1972-12-23 | 1973-12-20 |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5642610B2 (en) |
| AT (1) | AT329866B (en) |
| BE (1) | BE809157A (en) |
| BR (1) | BR7310097D0 (en) |
| CA (1) | CA1006643A (en) |
| CH (1) | CH587868A5 (en) |
| DE (1) | DE2263300C3 (en) |
| FR (1) | FR2211492B1 (en) |
| GB (1) | GB1444789A (en) |
| IT (1) | IT1005535B (en) |
| NL (1) | NL175627C (en) |
| ZA (1) | ZA739639B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5688897A (en) * | 1994-04-07 | 1997-11-18 | Asahi Kasei Kogyo Kabushiki Kaisha | Method for producing a stabilized oxymethylene copolymer |
| US8742065B2 (en) | 2008-04-16 | 2014-06-03 | Ticona Gmbh | Oxymethylene polymers, process for the preparation thereof and use thereof |
| US8840976B2 (en) | 2010-10-14 | 2014-09-23 | Ticona Llc | VOC or compressed gas containment device made from a polyoxymethylene polymer |
| US8968858B2 (en) | 2011-12-30 | 2015-03-03 | Ticona Llc | Printable molded articles made from a polyoxymethylene polymer composition |
| US9005515B2 (en) | 2011-04-01 | 2015-04-14 | Ticona Gmbh | High impact resistant polyoxymethylene for extrusion blow molding |
| US9745467B2 (en) | 2012-12-27 | 2017-08-29 | Ticona, Llc | Impact modified polyoxymethylene composition and articles made therefrom that are stable when exposed to ultraviolet light |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5487792A (en) * | 1977-12-24 | 1979-07-12 | Mitsubishi Gas Chem Co Inc | Polymerization of trioxane |
| JPS58194345U (en) * | 1982-06-18 | 1983-12-24 | 株式会社マンネン | Combustion air preheating device in boiler |
| JPS6179734U (en) * | 1985-07-04 | 1986-05-28 | ||
| DE4443150C2 (en) * | 1994-12-05 | 2000-02-24 | Hoechst Ag | Acetal copolymers with improved mechanical properties |
| DE102008018965A1 (en) | 2008-04-16 | 2009-10-22 | Ticona Gmbh | Oxymethylene copolymers and their use, as well as processes for the preparation of oxymethylene copolymers |
| DE102008018966A1 (en) | 2008-04-16 | 2009-10-22 | Ticona Gmbh | Process for the preparation of oxymethylene polymers and apparatus suitable therefor |
| DE102008018968A1 (en) | 2008-04-16 | 2009-10-22 | Ticona Gmbh | Polyoxymethylene molding compounds and molded articles and their use |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1531942A (en) * | 1966-07-27 | 1968-07-05 | Huels Chemische Werke Ag | Process for preparing thermally stable polyoxymethylenes |
-
1972
- 1972-12-23 DE DE2263300A patent/DE2263300C3/en not_active Expired
-
1973
- 1973-12-18 NL NLAANVRAGE7317313,A patent/NL175627C/en not_active IP Right Cessation
- 1973-12-19 CH CH1785373A patent/CH587868A5/xx not_active IP Right Cessation
- 1973-12-20 GB GB5911973A patent/GB1444789A/en not_active Expired
- 1973-12-21 AT AT1074073A patent/AT329866B/en not_active IP Right Cessation
- 1973-12-21 BR BR10097/73A patent/BR7310097D0/en unknown
- 1973-12-21 IT IT8409/73A patent/IT1005535B/en active
- 1973-12-21 ZA ZA00739639A patent/ZA739639B/en unknown
- 1973-12-21 JP JP14258973A patent/JPS5642610B2/ja not_active Expired
- 1973-12-21 FR FR7345971A patent/FR2211492B1/fr not_active Expired
- 1973-12-21 CA CA188,820A patent/CA1006643A/en not_active Expired
- 1973-12-27 BE BE139318A patent/BE809157A/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5688897A (en) * | 1994-04-07 | 1997-11-18 | Asahi Kasei Kogyo Kabushiki Kaisha | Method for producing a stabilized oxymethylene copolymer |
| US8742065B2 (en) | 2008-04-16 | 2014-06-03 | Ticona Gmbh | Oxymethylene polymers, process for the preparation thereof and use thereof |
| US8840976B2 (en) | 2010-10-14 | 2014-09-23 | Ticona Llc | VOC or compressed gas containment device made from a polyoxymethylene polymer |
| US9005515B2 (en) | 2011-04-01 | 2015-04-14 | Ticona Gmbh | High impact resistant polyoxymethylene for extrusion blow molding |
| US8968858B2 (en) | 2011-12-30 | 2015-03-03 | Ticona Llc | Printable molded articles made from a polyoxymethylene polymer composition |
| US9745467B2 (en) | 2012-12-27 | 2017-08-29 | Ticona, Llc | Impact modified polyoxymethylene composition and articles made therefrom that are stable when exposed to ultraviolet light |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2263300C3 (en) | 1980-11-27 |
| JPS5642610B2 (en) | 1981-10-06 |
| BE809157A (en) | 1974-06-27 |
| CA1006643A (en) | 1977-03-08 |
| NL7317313A (en) | 1974-06-25 |
| ZA739639B (en) | 1975-01-29 |
| NL175627C (en) | 1984-12-03 |
| DE2263300B2 (en) | 1980-03-27 |
| NL175627B (en) | 1984-07-02 |
| IT1005535B (en) | 1976-09-30 |
| JPS4990796A (en) | 1974-08-29 |
| ATA1074073A (en) | 1975-08-15 |
| CH587868A5 (en) | 1977-05-13 |
| FR2211492B1 (en) | 1977-06-10 |
| BR7310097D0 (en) | 1974-08-15 |
| AT329866B (en) | 1976-06-10 |
| FR2211492A1 (en) | 1974-07-19 |
| DE2263300A1 (en) | 1974-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |