BE770137A - Procede de separation en continu des residus de distillation des isocyanates bruts - Google Patents

Procede de separation en continu des residus de distillation des isocyanates bruts

Info

Publication number
BE770137A
BE770137A BE770137A BE770137A BE770137A BE 770137 A BE770137 A BE 770137A BE 770137 A BE770137 A BE 770137A BE 770137 A BE770137 A BE 770137A BE 770137 A BE770137 A BE 770137A
Authority
BE
Belgium
Prior art keywords
continuous separation
distillation residues
crude isocyanates
isocyanates
crude
Prior art date
Application number
BE770137A
Other languages
English (en)
French (fr)
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 BE770137A publication Critical patent/BE770137A/xx

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)
BE770137A 1970-07-18 1971-07-16 Procede de separation en continu des residus de distillation des isocyanates bruts BE770137A (fr)

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
BE770137A true BE770137A (fr) 1971-12-01

Family

ID=5777174

Family Applications (1)

Application Number Title Priority Date Filing Date
BE770137A BE770137A (fr) 1970-07-18 1971-07-16 Procede de separation en continu des residus de distillation des isocyanates bruts

Country Status (6)

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

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 (enExample) 1972-01-20
FR2103035A5 (enExample) 1972-04-07
GB1336385A (en) 1973-11-07
DE2035731A1 (enExample) 1972-01-27
DE2035731C3 (de) 1985-08-29
ES393391A1 (es) 1973-08-16

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: FARBENFABRIKEN BAYER A.G.

Effective date: 19900731