CH375336A - Verfahren zur Reinigung von durch Depolymerisation von Polyäthylenterephthalat gewonnenem Roh-Dimethylterephthalat - Google Patents
Verfahren zur Reinigung von durch Depolymerisation von Polyäthylenterephthalat gewonnenem Roh-DimethylterephthalatInfo
- Publication number
- CH375336A CH375336A CH7856059A CH7856059A CH375336A CH 375336 A CH375336 A CH 375336A CH 7856059 A CH7856059 A CH 7856059A CH 7856059 A CH7856059 A CH 7856059A CH 375336 A CH375336 A CH 375336A
- Authority
- CH
- Switzerland
- Prior art keywords
- depolymerization
- purification
- crude dimethyl
- polyethylene terephthalate
- terephthalate
- Prior art date
Links
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 title 2
- 238000000034 method Methods 0.000 title 1
- -1 polyethylene terephthalate Polymers 0.000 title 1
- 229920000139 polyethylene terephthalate Polymers 0.000 title 1
- 239000005020 polyethylene terephthalate Substances 0.000 title 1
- 238000000746 purification Methods 0.000 title 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV15747A DE1080540B (de) | 1959-01-14 | 1959-01-14 | Verfahren zur Reinigung von durch Abbau von Polyaethylen-terephthalat mit Methanol unter Druck gewonnenem rohem Terephthalsaeuredimethylester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH375336A true CH375336A (de) | 1964-02-29 |
Family
ID=7575209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH7856059A CH375336A (de) | 1959-01-14 | 1959-09-23 | Verfahren zur Reinigung von durch Depolymerisation von Polyäthylenterephthalat gewonnenem Roh-Dimethylterephthalat |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3037048A (de) |
| BE (1) | BE583333A (de) |
| CH (1) | CH375336A (de) |
| DE (1) | DE1080540B (de) |
| FR (1) | FR1238637A (de) |
| GB (1) | GB880432A (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2323219A1 (de) * | 1973-05-09 | 1974-11-21 | Hoechst Ag | Verfahren zur reinigung von terephthalsaeuredimethylester |
| US4929749A (en) * | 1989-03-15 | 1990-05-29 | Synergistics Industries, Limited | Production of terephthalate esters by degradative transesterification of scrap or virgin terephthalate polyesters |
| US5101064A (en) * | 1989-03-15 | 1992-03-31 | Synergistics Industries Limited | Production of terephthalate esters by degradative transesterification of scrap or virgin terephthalate polyesters |
| US5262560A (en) * | 1991-05-31 | 1993-11-16 | Amoco Corporation | Process for preparing purified dimethyl naphthalenedicarboxylate |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE530181A (de) * | 1953-08-03 | |||
| DE954151C (de) * | 1954-03-06 | 1956-12-13 | Basf Ag | Verfahren zur Reinigung von Terephthalsaeureestern |
-
1959
- 1959-01-14 DE DEV15747A patent/DE1080540B/de active Pending
- 1959-09-23 CH CH7856059A patent/CH375336A/de unknown
- 1959-10-06 BE BE583333A patent/BE583333A/fr unknown
- 1959-10-12 FR FR807252A patent/FR1238637A/fr not_active Expired
- 1959-12-11 GB GB42270/59A patent/GB880432A/en not_active Expired
-
1960
- 1960-01-11 US US1426A patent/US3037048A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR1238637A (fr) | 1960-08-12 |
| BE583333A (fr) | 1960-02-01 |
| US3037048A (en) | 1962-05-29 |
| DE1080540B (de) | 1960-04-28 |
| GB880432A (en) | 1961-10-25 |
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