[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

GB1354565A - Process for the purification of adiponitrile - Google Patents

Process for the purification of adiponitrile

Info

Publication number
GB1354565A
GB1354565A GB2948071A GB2948071A GB1354565A GB 1354565 A GB1354565 A GB 1354565A GB 2948071 A GB2948071 A GB 2948071A GB 2948071 A GB2948071 A GB 2948071A GB 1354565 A GB1354565 A GB 1354565A
Authority
GB
United Kingdom
Prior art keywords
adiponitrile
purification
june
weight
iminocyanocyclopentane
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
GB2948071A
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB1354565A publication Critical patent/GB1354565A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles

Landscapes

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

Abstract

1354565 Purification of adiponitrile RHONEPOULENC SA 23 June 1971 [24 June 1970] 29480/71 Heading C2C Adiponitrile is purified by contacting at a temperature of up to 50‹ C. inclusive with 0À1 to 5 times its weight of an aqueous solution containing 0À1 to 3% by weight of an inorganic or organic acid whose acidity constant pKa is not more than 5, and the adiponitrile is then separated from the aqueous layer by decantation and subsequently subjected to a fractional distillation. The acid may be, e.g. hydrochloric, sulphuric, nitric, orthophosphoric, acetic, benzoic or methane sulphonic and the impurity removed is typically iminocyanocyclopentane.
GB2948071A 1970-06-24 1971-06-23 Process for the purification of adiponitrile Expired GB1354565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7023410A FR2094542A5 (en) 1970-06-24 1970-06-24

Publications (1)

Publication Number Publication Date
GB1354565A true GB1354565A (en) 1974-06-05

Family

ID=9057732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2948071A Expired GB1354565A (en) 1970-06-24 1971-06-23 Process for the purification of adiponitrile

Country Status (8)

Country Link
BE (1) BE768943A (en)
CS (1) CS193463B2 (en)
DE (1) DE2131448A1 (en)
FR (1) FR2094542A5 (en)
GB (1) GB1354565A (en)
LU (1) LU63399A1 (en)
NL (1) NL7108281A (en)
SU (1) SU364161A3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6207851B1 (en) 1996-09-10 2001-03-27 Basf Aktiengesellschaft Process for simultaneously preparing 6-aminocapronitrile and hexamethylene diamine
CN112430196A (en) * 2020-09-29 2021-03-02 瑞典国际化工技术有限公司 Method and device for refining adiponitrile
CN115215750A (en) * 2022-07-26 2022-10-21 万华化学集团股份有限公司 Preparation method of hexamethylene diamine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6207851B1 (en) 1996-09-10 2001-03-27 Basf Aktiengesellschaft Process for simultaneously preparing 6-aminocapronitrile and hexamethylene diamine
CN112430196A (en) * 2020-09-29 2021-03-02 瑞典国际化工技术有限公司 Method and device for refining adiponitrile
CN115215750A (en) * 2022-07-26 2022-10-21 万华化学集团股份有限公司 Preparation method of hexamethylene diamine

Also Published As

Publication number Publication date
NL7108281A (en) 1971-12-28
SU364161A3 (en) 1972-12-25
LU63399A1 (en) 1972-03-22
DE2131448A1 (en) 1971-12-30
FR2094542A5 (en) 1972-02-04
BE768943A (en) 1971-12-23
CS193463B2 (en) 1979-10-31

Similar Documents

Publication Publication Date Title
DK106607C (en) Process for removing or recovering adipic acid from the reaction product resulting from the oxidation of cyclohexane.
ES393366A1 (en) RECOVERY OF ANHYDROUS HCl GAS BY EXTRACTIVE DISTILLATION WITH A HALIDE SALT
GB1354565A (en) Process for the purification of adiponitrile
GB1353786A (en) Purification of terephtalic acid
GB1162054A (en) Process for Purifying beta-Methylmercaptopropionaldehyde
GB839534A (en) Nitration of o-toluic acid
GB1498133A (en) Method for isolating 11-cyano-undecanoic acid as its ammonium salt
GB1376508A (en) Purification of cyanuric acid
GB1501997A (en) Process for the purification of decane dicarboxylic acid-(1,10)
GB1238962A (en)
GB1343193A (en) Method for purifying carboxylic acids
GB1270789A (en) Process for purifying adiponitrile
US2368072A (en) Production of hydroxylammonium salts
GB1064276A (en) Improvements in or relating to vinyl fluoride production
GB877622A (en) Isopropanol purification process
NL262812A (en)
GB1360998A (en) Recovery of doxycycline and products thereof
GB1304956A (en)
GB1262995A (en) Purification of phenol
GB1157416A (en) Purification of Caprolactam
GB963359A (en) Chemical process for recovery of vanadium and copper catalysts
GB1438267A (en) Process for the purification of crude 1-nitroanthraquinone
GB932246A (en) Purification of phthalic acids
GB1195078A (en) Purification of Formic or Propionic Acids.
GB910130A (en) Diphenylamine purification process

Legal Events

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