GB963035A - Improvements in or relating to the manufacture of dichloro-diphenyl-trichloroethane - Google Patents

Improvements in or relating to the manufacture of dichloro-diphenyl-trichloroethane

Info

Publication number
GB963035A
GB963035A GB1419161A GB1419161A GB963035A GB 963035 A GB963035 A GB 963035A GB 1419161 A GB1419161 A GB 1419161A GB 1419161 A GB1419161 A GB 1419161A GB 963035 A GB963035 A GB 963035A
Authority
GB
United Kingdom
Prior art keywords
reaction
sulphuric acid
trichloroethane
dichloro
diphenyl
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
GB1419161A
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.)
Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
Original Assignee
Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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 Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU filed Critical Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
Publication of GB963035A publication Critical patent/GB963035A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/26—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton
    • C07C17/263—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions
    • C07C17/2637—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by condensation reactions between a compound containing only oxygen and possibly halogen as hetero-atoms and a halogenated hydrocarbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A multistage process for producing dichlorodiphenyltrichloroethane comprises (1) partial reaction at -3 to +8 DEG C. of monochlorobenzene and trichloroacetaldehyde in presence of sulphuric acid, containing at least 97% H2SO4 and/or parachlorobenzene sulphuric acid and at most 3% free SO3, in an amount between 50 and 80% of that required to promote complete reaction, and (2) in at least one further stage, contacting the reaction mixture from (1) in presence of a suspension of product crystals at 0-20 DEG C. with a quantity of sulphuric acid sufficient to complete the reaction. U.S.A. Specifications 2,463,653, 2,610,213, 2,654,790 and French Specification 1,116,229 are referred to.
GB1419161A 1960-04-19 1961-04-19 Improvements in or relating to the manufacture of dichloro-diphenyl-trichloroethane Expired GB963035A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR824642A FR1262626A (en) 1960-04-19 1960-04-19 New manufacturing process for dichlorodiphenyltrichloroethane

Publications (1)

Publication Number Publication Date
GB963035A true GB963035A (en) 1964-07-08

Family

ID=8729538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1419161A Expired GB963035A (en) 1960-04-19 1961-04-19 Improvements in or relating to the manufacture of dichloro-diphenyl-trichloroethane

Country Status (3)

Country Link
CH (1) CH411815A (en)
FR (1) FR1262626A (en)
GB (1) GB963035A (en)

Also Published As

Publication number Publication date
FR1262626A (en) 1961-06-05
CH411815A (en) 1966-04-30

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