GB1464241A - Purification of aromatic esters - Google Patents

Purification of aromatic esters

Info

Publication number
GB1464241A
GB1464241A GB601075A GB601075A GB1464241A GB 1464241 A GB1464241 A GB 1464241A GB 601075 A GB601075 A GB 601075A GB 601075 A GB601075 A GB 601075A GB 1464241 A GB1464241 A GB 1464241A
Authority
GB
United Kingdom
Prior art keywords
feb
purification
crude
ester
aromatic esters
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
GB601075A
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.)
Teijin Ltd
Original Assignee
Teijin Ltd
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 Teijin Ltd filed Critical Teijin Ltd
Publication of GB1464241A publication Critical patent/GB1464241A/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
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

1464241 Dimethyl 2,6-naphthalene bicarboxylate TEIJIN Ltd 12 Feb 1975 [12 Feb 1974] 6010/75 Heading C2C The invention comprises a method for the production of purified 2,6-naphthalenedicarboxylic acid dimethyl ester, which comprises heating while distilling under reduced pressure a crude 2,6-naphthalene dicarboxylic acid dimethyl ester having an acid value (A f ), as expressed in milligrams of KOH required for neutralizing the carboxyl groups contained in one gram of said crude ester, of from 1À0 to 50.
GB601075A 1974-02-12 1975-02-12 Purification of aromatic esters Expired GB1464241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1630774A JPS5829291B2 (en) 1974-02-12 1974-02-12 2,6- Naphthalene dicarbonate dimethyl ester

Publications (1)

Publication Number Publication Date
GB1464241A true GB1464241A (en) 1977-02-09

Family

ID=11912867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB601075A Expired GB1464241A (en) 1974-02-12 1975-02-12 Purification of aromatic esters

Country Status (4)

Country Link
JP (1) JPS5829291B2 (en)
DE (1) DE2505831C3 (en)
FR (1) FR2260561B1 (en)
GB (1) GB1464241A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5868226U (en) * 1981-11-04 1983-05-10 伊藤　公政 Ham, sausage, kamaboko, etc. with a hole in the center
US5095135A (en) * 1990-04-05 1992-03-10 Sumikin Chemical Co., Ltd. Process for the preparation of high-purity naphthalenecarboxylic acid esters

Also Published As

Publication number Publication date
DE2505831C3 (en) 1979-03-15
DE2505831B2 (en) 1978-07-13
FR2260561A1 (en) 1975-09-05
JPS50108248A (en) 1975-08-26
JPS5829291B2 (en) 1983-06-22
FR2260561B1 (en) 1978-10-06
DE2505831A1 (en) 1975-08-14

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Legal Events

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