GB1511412A - Oligomeric terephthalic acid ethylene glycol esters and a process for their production - Google Patents
Oligomeric terephthalic acid ethylene glycol esters and a process for their productionInfo
- Publication number
- GB1511412A GB1511412A GB3648/76A GB364876A GB1511412A GB 1511412 A GB1511412 A GB 1511412A GB 3648/76 A GB3648/76 A GB 3648/76A GB 364876 A GB364876 A GB 364876A GB 1511412 A GB1511412 A GB 1511412A
- Authority
- GB
- United Kingdom
- Prior art keywords
- product
- ethylene glycol
- terephthalic acid
- transesterification
- chamber
- 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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/80—Phthalic acid esters
- C07C69/82—Terephthalic acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
1511412 Oligomeric terephthalic acid ethylene glycol esters DYNAMIT NOBEL AG 29 Jan 1976 [1 Feb 1975] 03648/76 Heading C2C [Also in Division C3] The invention comprises a terephthalic acid ethylene glycol ester solid at ambient temperature and having a purity such that it possesses each of the following characteristics: a solidification point in the range of from 180 to 220 C.; a reduced viscosity measured as herein specified of from 0À07 to 0À14 dl./g.; a melt viscosity not higher than 250 cP; an oligomeric ester content of at least 80% by weight; a free ethylene glycol content of at most 5% by weight and an average degree of condensation of from 2À2 to 6À7. It may be obtained by continuously introducing dimethyl terephthalate and ethylene glycol in a molar ratio of from 1 : 1À6 to 1 : 2 into an upper chamber of a multi-chamber column reactor which comprises a plurality of chambers arranged vertically one above the other, each communicating with the chamber or chambers thereadjacent, catalytically effecting transesterification of the dimethyl terephthalate at temperatures in the range of from 140 to 240 C. as the reaction mixture from said upper chamber passes through a plurality of the chambers to yield a transesterification product in a lower chamber, which product is continuously passed to a zone in which the pressure is below ambient pressure, the temperature is from 10 to 40 C. above the solidfication point of the transesterification product and the residence time of the transesterification product is such that as much glycol is removed therefrom as is necessary for adjusting the terephthalic acid : glycol molar ratio of the product to a value of from 1 : 1À45 to 1 : 1À15, and continuously applying the liquid product thus obtained in a thin layer to a surface heated to from 40 to 100 C. and removing the product from said surface in solid form. Specified transesterification catalysts are zinc and manganese acetates. Alkali metal alcoholates may be employed as co-catalysts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752504156 DE2504156A1 (en) | 1975-02-01 | 1975-02-01 | LOW MOLECULAR MOLECULAR TEREPHTHAL ACID AETHYLENE GLYCOLESTER, THEIR PREPARATION AND USE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1511412A true GB1511412A (en) | 1978-05-17 |
Family
ID=5937840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3648/76A Expired GB1511412A (en) | 1975-02-01 | 1976-01-29 | Oligomeric terephthalic acid ethylene glycol esters and a process for their production |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS51101946A (en) |
| BE (1) | BE838080A (en) |
| BR (1) | BR7600251A (en) |
| CA (1) | CA1081245A (en) |
| DD (1) | DD123738A5 (en) |
| DE (1) | DE2504156A1 (en) |
| FR (1) | FR2299310A1 (en) |
| GB (1) | GB1511412A (en) |
| IN (1) | IN145144B (en) |
| IT (1) | IT1053475B (en) |
| MX (1) | MX3016E (en) |
| NL (1) | NL7600984A (en) |
| PL (1) | PL103014B1 (en) |
| RO (1) | RO69845A (en) |
| SU (1) | SU625598A3 (en) |
| TR (1) | TR18730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1120394A1 (en) * | 1999-08-04 | 2001-08-01 | Aies Co., Ltd. | METHODS FOR THE PREPARATION OR PURIFICATION OF BIS-$g(b)-HYDROXYETHYL TEREPHTHALATE |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986001200A1 (en) * | 1984-08-14 | 1986-02-27 | Mitsubishi Chemical Industries Limited | Process for preparaing tetramethyl biphenyltetracarboxylate |
| US6380352B1 (en) * | 2000-08-29 | 2002-04-30 | Eastman Chemical Company | Polyester precursor purification process |
-
1975
- 1975-02-01 DE DE19752504156 patent/DE2504156A1/en not_active Withdrawn
- 1975-11-24 MX MX100139U patent/MX3016E/en unknown
- 1975-12-15 DD DD190149A patent/DD123738A5/xx unknown
-
1976
- 1976-01-16 BR BR7600251A patent/BR7600251A/en unknown
- 1976-01-27 TR TR18730A patent/TR18730A/en unknown
- 1976-01-29 GB GB3648/76A patent/GB1511412A/en not_active Expired
- 1976-01-29 SU SU762317700A patent/SU625598A3/en active
- 1976-01-30 FR FR7602570A patent/FR2299310A1/en active Granted
- 1976-01-30 BE BE163933A patent/BE838080A/en unknown
- 1976-01-30 NL NL7600984A patent/NL7600984A/en not_active Application Discontinuation
- 1976-01-30 IT IT7647875A patent/IT1053475B/en active
- 1976-01-31 PL PL1976186951A patent/PL103014B1/en unknown
- 1976-01-31 RO RO7684665A patent/RO69845A/en unknown
- 1976-02-02 CA CA245,053A patent/CA1081245A/en not_active Expired
- 1976-02-02 JP JP51010222A patent/JPS51101946A/en active Pending
- 1976-02-13 IN IN262/CAL/1976A patent/IN145144B/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1120394A1 (en) * | 1999-08-04 | 2001-08-01 | Aies Co., Ltd. | METHODS FOR THE PREPARATION OR PURIFICATION OF BIS-$g(b)-HYDROXYETHYL TEREPHTHALATE |
| EP1120394A4 (en) * | 1999-08-04 | 2002-07-24 | Aies Co Ltd | METHODS FOR THE PREPARATION OR PURIFICATION OF BIS-$g(b)-HYDROXYETHYL TEREPHTHALATE |
| US6630601B1 (en) | 1999-08-04 | 2003-10-07 | Aies Company Limited | Methods for the preparation or purification of bis-β-hydroxyethyl terephthalate |
Also Published As
| Publication number | Publication date |
|---|---|
| TR18730A (en) | 1977-07-27 |
| JPS51101946A (en) | 1976-09-08 |
| FR2299310A1 (en) | 1976-08-27 |
| BR7600251A (en) | 1976-08-31 |
| DE2504156A1 (en) | 1976-08-05 |
| DD123738A5 (en) | 1977-01-12 |
| RO69845A (en) | 1981-07-30 |
| MX3016E (en) | 1980-02-04 |
| IT1053475B (en) | 1981-08-31 |
| SU625598A3 (en) | 1978-09-25 |
| PL103014B1 (en) | 1979-05-31 |
| CA1081245A (en) | 1980-07-08 |
| FR2299310B1 (en) | 1979-05-18 |
| NL7600984A (en) | 1976-08-03 |
| IN145144B (en) | 1978-09-02 |
| BE838080A (en) | 1976-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |