GB953996A - A process for the decondensation of polyethylene terephthalate to dimethyl terephthalate - Google Patents
A process for the decondensation of polyethylene terephthalate to dimethyl terephthalateInfo
- Publication number
- GB953996A GB953996A GB39124/62A GB3912462A GB953996A GB 953996 A GB953996 A GB 953996A GB 39124/62 A GB39124/62 A GB 39124/62A GB 3912462 A GB3912462 A GB 3912462A GB 953996 A GB953996 A GB 953996A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zinc
- polyethylene terephthalate
- terephthalate
- decondensation
- dimethyl
- 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
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 title abstract 4
- -1 polyethylene terephthalate Polymers 0.000 title abstract 4
- 229920000139 polyethylene terephthalate Polymers 0.000 title abstract 4
- 239000005020 polyethylene terephthalate Substances 0.000 title abstract 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- 150000003752 zinc compounds Chemical class 0.000 abstract 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 abstract 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract 1
- 150000007522 mineralic acids Chemical class 0.000 abstract 1
- 150000007524 organic acids Chemical class 0.000 abstract 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 abstract 1
- 229960001860 salicylate Drugs 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 150000003751 zinc Chemical class 0.000 abstract 1
- 239000011667 zinc carbonate Substances 0.000 abstract 1
- 229910000010 zinc carbonate Inorganic materials 0.000 abstract 1
- 235000004416 zinc carbonate Nutrition 0.000 abstract 1
- 239000011787 zinc oxide Substances 0.000 abstract 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
- 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
- Polyesters Or Polycarbonates (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
An improvement in the process for the decondensation of polyethylene terephthalate to dimethyl terephthalate claimed in the parent Specification wherein from 0.1% to 2% by weight of a zinc compound in finely divided form is added to the polyethylene terephthalate. The zinc compound, which is preferably employed in the form of a suspension in methanol and supplied to a reaction vessel in admixture with polyethylene terephthalate, is a zinc salt of an organic or inorganic acid. Specified zinc compounds are zinc oxide, zinc carbonate, nitrate, chromate, fluoride and salicylate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV21478A DE1143193B (en) | 1961-10-18 | 1961-10-18 | Process for the degradation of polyethylene terephthalate to dimethyl terephthalate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB953996A true GB953996A (en) | 1964-04-02 |
Family
ID=7579210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39124/62A Expired GB953996A (en) | 1961-10-18 | 1962-10-16 | A process for the decondensation of polyethylene terephthalate to dimethyl terephthalate |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE622977R (en) |
| DE (1) | DE1143193B (en) |
| GB (1) | GB953996A (en) |
-
1961
- 1961-10-18 DE DEV21478A patent/DE1143193B/en active Pending
-
1962
- 1962-09-28 BE BE622977A patent/BE622977R/en active
- 1962-10-16 GB GB39124/62A patent/GB953996A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1143193B (en) | 1963-02-07 |
| BE622977R (en) | 1963-01-16 |
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