GB806934A - Process for the polycondensation of diglycol terephthalate - Google Patents
Process for the polycondensation of diglycol terephthalateInfo
- Publication number
- GB806934A GB806934A GB2148156A GB2148156A GB806934A GB 806934 A GB806934 A GB 806934A GB 2148156 A GB2148156 A GB 2148156A GB 2148156 A GB2148156 A GB 2148156A GB 806934 A GB806934 A GB 806934A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- terephthalate
- polycondensation
- amount
- diglycol
- 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
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 title abstract 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 title abstract 3
- 238000006068 polycondensation reaction Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 239000002904 solvent Substances 0.000 abstract 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 3
- -1 Polyethylene terephthalate Polymers 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 abstract 2
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 2
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 abstract 1
- VXDNDYAVOWUPCO-UHFFFAOYSA-K zinc oxostibanylium triacetate Chemical compound [Sb+]=O.C(C)(=O)[O-].[Zn+2].C(C)(=O)[O-].C(C)(=O)[O-] VXDNDYAVOWUPCO-UHFFFAOYSA-K 0.000 abstract 1
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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/81—Preparation processes using solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Polyethylene terephthalate is made by polycondensing diglycol terephthalate in the presence of 5-20 per cent by weight of one of the solvents specified in the parent Specification, the reaction temperature not exceeding 245 DEG C. and the polycondensation being completed while maintaining this amount of solvent in the reaction system. The amount of solvent may be maintained by supplying fresh solvent at the rate at which it is distilled off or by recycling the distilled solvent after separation of the solvent. The polyethylene terephthalate containing a small amount of solvent may be spun or cast. In an example, dimethyl terephthalate is re-esterified with ethylene glycol in presence of a zinc acetate-antimony oxide catalyst and the resulting diglycol terephthalate polycondensed in presence of tetrahydronaphthalene. U.S.A. Specification 2,597,643 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV9317A DE1005729B (en) | 1955-08-08 | 1955-08-08 | Process for the polycondensation of diol esters of aromatic dicarboxylic acids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB806934A true GB806934A (en) | 1959-01-07 |
Family
ID=7572627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2148156A Expired GB806934A (en) | 1955-08-08 | 1956-07-11 | Process for the polycondensation of diglycol terephthalate |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1005729B (en) |
GB (1) | GB806934A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0026120A1 (en) * | 1979-08-27 | 1981-04-01 | Union Carbide Corporation | Process for preparing polyarylates in the presence of a cycloaliphatic compound |
EP0026121A1 (en) * | 1979-08-27 | 1981-04-01 | Union Carbide Corporation | Process for preparing polyarylates in the presence of a diphenyl ether compound and a magnesium catalyst |
EP0026684A1 (en) * | 1979-08-27 | 1981-04-08 | Union Carbide Corporation | Process for preparing polyarylates in the presence of a diphenyl ether |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2745578B1 (en) * | 1996-02-29 | 1998-05-07 | Rhone Poulenc Fibres & Polymer | POLYESTER MANUFACTURING PROCESS |
-
1955
- 1955-08-08 DE DEV9317A patent/DE1005729B/en active Pending
-
1956
- 1956-07-11 GB GB2148156A patent/GB806934A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0026120A1 (en) * | 1979-08-27 | 1981-04-01 | Union Carbide Corporation | Process for preparing polyarylates in the presence of a cycloaliphatic compound |
EP0026121A1 (en) * | 1979-08-27 | 1981-04-01 | Union Carbide Corporation | Process for preparing polyarylates in the presence of a diphenyl ether compound and a magnesium catalyst |
EP0026684A1 (en) * | 1979-08-27 | 1981-04-08 | Union Carbide Corporation | Process for preparing polyarylates in the presence of a diphenyl ether |
Also Published As
Publication number | Publication date |
---|---|
DE1005729B (en) | 1957-04-04 |
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