ES393391A1 - Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos. - Google Patents

Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos.

Info

Publication number
ES393391A1
ES393391A1 ES393391A ES393391A ES393391A1 ES 393391 A1 ES393391 A1 ES 393391A1 ES 393391 A ES393391 A ES 393391A ES 393391 A ES393391 A ES 393391A ES 393391 A1 ES393391 A1 ES 393391A1
Authority
ES
Spain
Prior art keywords
isocyanate
continuous removal
distillation residues
concentrates
pressure tank
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
ES393391A
Other languages
English (en)
Spanish (es)
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of ES393391A1 publication Critical patent/ES393391A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/18—Separation; Purification; Stabilisation; Use of additives
    • C07C263/20—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
ES393391A 1970-07-18 1971-07-17 Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos. Expired ES393391A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702035731 DE2035731C3 (de) 1970-07-18 1970-07-18 Verfahren zur einstufigen kontinuierlichen Abtrennung von Destillationsrückständen aus rohen Isocyanaten

Publications (1)

Publication Number Publication Date
ES393391A1 true ES393391A1 (es) 1973-08-16

Family

ID=5777174

Family Applications (1)

Application Number Title Priority Date Filing Date
ES393391A Expired ES393391A1 (es) 1970-07-18 1971-07-17 Procedimiento para la separacion continua en una sola eta- pa, de residuos de los concentrados de isocianatos.

Country Status (6)

Country Link
BE (1) BE770137A (OSRAM)
DE (1) DE2035731C3 (OSRAM)
ES (1) ES393391A1 (OSRAM)
FR (1) FR2103035A5 (OSRAM)
GB (1) GB1336385A (OSRAM)
NL (1) NL7109730A (OSRAM)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118410A (en) 1971-02-04 1978-10-03 Gottfried Reuter Gmbh I.L. Polyphenyl-polymethylene-polyisocyanate mixtures
DD130143B1 (de) * 1975-08-15 1979-12-27 Guenter Muecke Verfahren zur kontinuierlichen thermischen abtrennung organischer isocyanate aus fluessigem destillationsrueckstand
FR2397396A1 (fr) * 1977-07-12 1979-02-09 Ugine Kuhlmann Procede de recuperation du toluene diisocyanate a partir des residus de fabrication
DE2942678A1 (de) * 1979-10-23 1981-05-07 Bayer Ag, 5090 Leverkusen Verfahren zur aufarbeitung von vernetzten, harnstoffgruppenhaltigen isocyanatdestillationsrueckstaenden und verwendung der verfahrensprodukte als ausgangskomponenten bei der herstellung von kunststoffen
US6307096B1 (en) * 1999-12-28 2001-10-23 Bayer Corporation Method for making aliphatic diisocyanates
CN106006806A (zh) * 2016-07-22 2016-10-12 株洲三特环保节能有限公司 一种热风和列管加热器相结合的废酸浓缩处理方法及装置
EP3597632A1 (de) 2018-07-18 2020-01-22 Covestro Deutschland AG Verfahren zur rückgewinnung von diisocyanaten aus destillationsrückständen
EP4121410A1 (de) 2020-03-18 2023-01-25 Covestro Deutschland AG Verfahren sowie vorrichtung zur aufreinigung zähflüssiger und/oder fester isocyanate aus einem produktstrom der isocyanatsynthese

Also Published As

Publication number Publication date
DE2035731B2 (de) 1979-03-01
NL7109730A (OSRAM) 1972-01-20
BE770137A (fr) 1971-12-01
FR2103035A5 (OSRAM) 1972-04-07
GB1336385A (en) 1973-11-07
DE2035731A1 (OSRAM) 1972-01-27
DE2035731C3 (de) 1985-08-29

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