GB1486320A - Process for reducing the content of terephthalaldehyde acid methyl ester in dimethyl terephthalate - Google Patents

Process for reducing the content of terephthalaldehyde acid methyl ester in dimethyl terephthalate

Info

Publication number
GB1486320A
GB1486320A GB5458774A GB5458774A GB1486320A GB 1486320 A GB1486320 A GB 1486320A GB 5458774 A GB5458774 A GB 5458774A GB 5458774 A GB5458774 A GB 5458774A GB 1486320 A GB1486320 A GB 1486320A
Authority
GB
United Kingdom
Prior art keywords
reducing
content
methyl ester
acid methyl
dimethyl terephthalate
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
Application number
GB5458774A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huels AG
Original Assignee
Chemische Werke Huels AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chemische Werke Huels AG filed Critical Chemische Werke Huels AG
Publication of GB1486320A publication Critical patent/GB1486320A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/333—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisation; by change of size of the carbon skeleton
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
    • 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
    • C07C67/60—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
GB5458774A 1973-12-20 1974-12-18 Process for reducing the content of terephthalaldehyde acid methyl ester in dimethyl terephthalate Expired GB1486320A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732363414 DE2363414C3 (en) 1973-12-20 1973-12-20 Process for the purification of dimethyl terephthalate by reducing the content of methyl terephthalaldehyde or its dimethylacetals

Publications (1)

Publication Number Publication Date
GB1486320A true GB1486320A (en) 1977-09-21

Family

ID=5901340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5458774A Expired GB1486320A (en) 1973-12-20 1974-12-18 Process for reducing the content of terephthalaldehyde acid methyl ester in dimethyl terephthalate

Country Status (8)

Country Link
JP (1) JPS5095237A (en)
BE (1) BE823734A (en)
DE (1) DE2363414C3 (en)
FR (1) FR2255286A1 (en)
GB (1) GB1486320A (en)
IT (1) IT1026064B (en)
NL (1) NL7416593A (en)
RO (1) RO65160A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442658A1 (en) * 1978-11-30 1980-06-27 Chinoin Gyogyszer Es Vegyeszet Non-pyrophoric palladium catalyst prodn. - with regulated granule size and activity by adsorption on active charcoal with uniform pore distribution

Also Published As

Publication number Publication date
FR2255286A1 (en) 1975-07-18
RO65160A (en) 1980-06-15
DE2363414B2 (en) 1979-10-25
DE2363414C3 (en) 1980-07-10
JPS5095237A (en) 1975-07-29
IT1026064B (en) 1978-09-20
DE2363414A1 (en) 1975-07-03
BE823734A (en) 1975-04-16
NL7416593A (en) 1975-06-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee