GB1229133A - - Google Patents

Info

Publication number
GB1229133A
GB1229133A GB1229133DA GB1229133A GB 1229133 A GB1229133 A GB 1229133A GB 1229133D A GB1229133D A GB 1229133DA GB 1229133 A GB1229133 A GB 1229133A
Authority
GB
United Kingdom
Prior art keywords
purifying
terephthalic acid
crude
nemours
pont
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
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 filed Critical
Publication of GB1229133A publication Critical patent/GB1229133A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

Abstract

1,229,133. Purifying terephthalic acid. E. I. DU PONT DE NEMOURS & CO. 26 Sept., 1969 [3 Oct., 1963], No. 47500/69. Heading C2C. A process for purifying crude terephthalic acid comprises the step of washing the crude acid with aqueous acetone containing at least 50% by weight of water at a temperature of 225‹ to 275‹ C.
GB1229133D 1968-10-03 1969-09-26 Expired GB1229133A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76493768A 1968-10-03 1968-10-03

Publications (1)

Publication Number Publication Date
GB1229133A true GB1229133A (en) 1971-04-21

Family

ID=25072213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1229133D Expired GB1229133A (en) 1968-10-03 1969-09-26

Country Status (7)

Country Link
BE (1) BE739431A (en)
BR (1) BR6912705D0 (en)
DE (1) DE1950080A1 (en)
DK (1) DK122384B (en)
FR (1) FR2019863A1 (en)
GB (1) GB1229133A (en)
NL (1) NL6914101A (en)

Also Published As

Publication number Publication date
BR6912705D0 (en) 1973-01-11
DK122384B (en) 1972-02-28
FR2019863A1 (en) 1970-07-10
NL6914101A (en) 1970-04-07
BE739431A (en) 1970-03-02
DE1950080A1 (en) 1970-04-09

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Legal Events

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