NL277685A - - Google Patents

Info

Publication number
NL277685A
NL277685A NL277685DA NL277685A NL 277685 A NL277685 A NL 277685A NL 277685D A NL277685D A NL 277685DA NL 277685 A NL277685 A NL 277685A
Authority
NL
Netherlands
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.)
Publication of NL277685A publication Critical patent/NL277685A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16—Separation or purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/24—Sulfates of ammonium
    • C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Pyrrole Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
NL277685D 1961-04-27 NL277685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB62294A DE1194863B (en) 1961-04-27 1961-04-27 Process for the simultaneous production of pure ammonium sulfate and pure lactams from mixtures obtained by Beckmann rearrangement of cycloaliphatic ketoximes with sulfuric acid or oleum

Publications (1)

Publication Number Publication Date
NL277685A true NL277685A (en)

Family

ID=6973517

Family Applications (2)

Application Number Title Priority Date Filing Date
NL277685D NL277685A (en) 1961-04-27
NL277685A NL141509B (en) 1961-04-27 1962-04-26 PROCEDURE FOR THE SIMULTANEOUS PRODUCTION OF AMMONIUM SULPHATE AND LACTAMES FROM MIXTURES OBTAINED BY BECKMANN'S AMMUNICATION OF CYCLOALKANONOXIMES.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL277685A NL141509B (en) 1961-04-27 1962-04-26 PROCEDURE FOR THE SIMULTANEOUS PRODUCTION OF AMMONIUM SULPHATE AND LACTAMES FROM MIXTURES OBTAINED BY BECKMANN'S AMMUNICATION OF CYCLOALKANONOXIMES.

Country Status (4)

Country Link
CH (1) CH415640A (en)
DE (1) DE1194863B (en)
GB (1) GB996322A (en)
NL (2) NL141509B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138472A (en) * 1976-11-10 1979-02-06 Basf Aktiengesellschaft Process for obtaining coarsely crystalline pure ammonium sulfate
DE2651195C3 (en) * 1976-11-10 1985-01-31 Basf Ag, 6700 Ludwigshafen Process for the production of coarsely crystalline pure ammonium sulphate
DE2926279A1 (en) * 1979-06-29 1981-01-08 Basf Ag METHOD FOR CLEANING CAPROLACTAM
DE3635363A1 (en) * 1986-10-17 1988-04-21 Basf Ag METHOD FOR NEUTRALIZING REACTION MIXTURES OBTAINED BY BECKMANN'S RESTORATION OF CYCLOHEXANONOXIM
DE4314281C1 (en) * 1993-04-30 1995-01-19 Leuna Werke Gmbh Process for crystallising contaminated aqueous ammonium sulphate solutions
DE4407222A1 (en) * 1994-03-04 1995-09-07 Basf Ag Process for the recovery of caprolactam from oligo and / or polymers of caprolactam
EP1092681A1 (en) * 1999-10-13 2001-04-18 Va Tech Wabag AG Process for the neutralization of waste acids under simultaneous recovery of salt crystals
CN103896840B (en) * 2012-12-28 2018-06-05 Cap Iii 有限公司 The method and apparatus of continuous production epsilon-caprolactams
CN103896838B (en) * 2012-12-28 2018-03-23 Cap Iii 有限公司 The method and apparatus of continuous production ε caprolactams
WO2015010885A1 (en) * 2013-07-26 2015-01-29 Dsm Ip Assets B.V. Continuous process for recovery of caprolactam and crystalline ammonium sulfate
CZ308473B6 (en) 2018-11-27 2020-09-09 Vysoká škola chemicko-technologická v Praze Method for isolation of ɛ-caprolactam from the upper lactam phase
CN111408157B (en) * 2020-04-14 2021-09-14 中石化南京工程有限公司 Ammonium sulfate crystallization method and device thereof
CN115093354B (en) * 2022-06-29 2024-01-16 中国天辰工程有限公司 Method for synthesizing caprolactam through Beckmann rearrangement reaction
CN115367795B (en) * 2022-09-01 2024-02-20 山东东佳集团股份有限公司 Novel process for preparing ammonium sulfate by recycling catalyst titanium dioxide washing liquid in acid-making tail gas system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE858701C (en) * 1942-10-17 1952-12-08 Basf Ag Process for the cleavage of the lactam esters obtained in the rearrangement of oximes of cyclic ketones with sulfuric acid

Also Published As

Publication number Publication date
CH415640A (en) 1966-06-30
GB996322A (en) 1965-06-23
NL141509B (en) 1974-03-15
DE1194863B (en) 1965-06-16

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