PL81745B1 - Separation of lactams from a medium coating concentrated sulphuric trioxide in combination with the preparation of phosphate fertilizers[us3820972a] - Google Patents

Separation of lactams from a medium coating concentrated sulphuric trioxide in combination with the preparation of phosphate fertilizers[us3820972a] Download PDF

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Publication number
PL81745B1
PL81745B1 PL1972155187A PL15518772A PL81745B1 PL 81745 B1 PL81745 B1 PL 81745B1 PL 1972155187 A PL1972155187 A PL 1972155187A PL 15518772 A PL15518772 A PL 15518772A PL 81745 B1 PL81745 B1 PL 81745B1
Authority
PL
Poland
Prior art keywords
sulfuric acid
solution
lactam
sulfate
extraction
Prior art date
Application number
PL1972155187A
Other languages
English (en)
Polish (pl)
Original Assignee
Stamicarbon N Vnl
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
Priority claimed from NL7106342A external-priority patent/NL7106342A/xx
Priority claimed from NL7106344A external-priority patent/NL7106344A/xx
Application filed by Stamicarbon N Vnl filed Critical Stamicarbon N Vnl
Publication of PL81745B1 publication Critical patent/PL81745B1/pl

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D201/00Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16Separation or purification
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05BPHOSPHATIC FERTILISERS
    • C05B11/00Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
    • C05B11/06Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Processing Of Solid Wastes (AREA)
PL1972155187A 1971-05-07 1972-05-05 Separation of lactams from a medium coating concentrated sulphuric trioxide in combination with the preparation of phosphate fertilizers[us3820972a] PL81745B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7106342A NL7106342A (en) 1971-05-07 1971-05-07 Separating lactams from sulphuric acid solutions - - using mother liquor to produce dihydrogen phosphates
NL7106344A NL7106344A (en) 1971-05-07 1971-05-07 Sepn of lactams -combined with nitrophosphate fertiliser prodn

Publications (1)

Publication Number Publication Date
PL81745B1 true PL81745B1 (en) 1975-08-30

Family

ID=26644655

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1972155187A PL81745B1 (en) 1971-05-07 1972-05-05 Separation of lactams from a medium coating concentrated sulphuric trioxide in combination with the preparation of phosphate fertilizers[us3820972a]

Country Status (8)

Country Link
US (1) US3820972A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE783098A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD96235A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2221694A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES402470A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2137552B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1379180A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
PL (1) PL81745B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110589868A (zh) * 2019-09-04 2019-12-20 湖北三宁化工股份有限公司 己内酰胺硫酸酯制备高纯硫酸盐并副产己内酰胺的方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL144600B (nl) * 1964-03-07 1975-01-15 Stamicarbon Afscheiding van lactamen uit een sterk zwavelzuur milieu.

Also Published As

Publication number Publication date
DD96235A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-03-12
DE2221694A1 (de) 1972-11-23
GB1379180A (en) 1975-01-02
BE783098A (fr) 1972-11-06
FR2137552A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-12-29
FR2137552B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-09-27
ES402470A1 (es) 1975-04-01
US3820972A (en) 1974-06-28

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