YU49341B - Process for preparing izocyanates - Google Patents

Process for preparing izocyanates

Info

Publication number
YU49341B
YU49341B YU68995A YU68995A YU49341B YU 49341 B YU49341 B YU 49341B YU 68995 A YU68995 A YU 68995A YU 68995 A YU68995 A YU 68995A YU 49341 B YU49341 B YU 49341B
Authority
YU
Yugoslavia
Prior art keywords
isocyanate
phosgene
solvent
izocyanates
preparing
Prior art date
Application number
YU68995A
Other languages
Serbo-Croatian (sh)
Other versions
YU68995A (en
Inventor
Klaus Jost
GГјnter Hammen
Rudolf Sundermann
Original Assignee
Bayer Aktiengesellschaft
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 Aktiengesellschaft filed Critical Bayer Aktiengesellschaft
Publication of YU68995A publication Critical patent/YU68995A/en
Publication of YU49341B publication Critical patent/YU49341B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene

Landscapes

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

Abstract

Kontinualan postupak za pripremanje izocijanata reakcijom odgovarajućih primarnih amina sa fozgenom u prisustvu nekog izocijanata, kao rastvarača, naznačen time, što se primarni amin, eventualno rastvoren u nekom inertnom, organskom rastvaraču, i fozgen, koji je rastvoren u izocijanatu u koncentraciji od 10 do 60 mas.%, računato na rastvor izocijanat/fozgen, na temperaturama od 60 do 180В°C i pritiscima od 1 do 30 bar (105 do 3x106 Pa), prevode u odgovarajući izocijanat, pri čemu molski odnos fozgena prema unetom aminu iznosi 4:1 do 1:1, i što izocijanat,upotrebijen kao rastvarač, ne sadrži čvrstu supstancu, a vrednost hlora koji može biti hidrolizovan manja je od 2%. Prijava sadrži još 3 zavisna zahteva.Continuous process for the preparation of isocyanates by reacting the corresponding primary amines with phosgene in the presence of an isocyanate as solvent, characterized in that the primary amine, optionally dissolved in an inert, organic solvent, and phosgene, which is dissolved in the isocyanate at a concentration of 10 to 60 % by weight, calculated on the isocyanate / phosgene solution, at temperatures from 60 to 180V ° C and pressures from 1 to 30 bar (105 to 3x106 Pa), is converted into the corresponding isocyanate, where the molar ratio of phosgene to the introduced amine is 4: 1 to 1: 1, and that the isocyanate used as solvent does not contain a solid, and the value of chlorine that can be hydrolyzed is less than 2%. The application contains 3 more dependent requests.

YU68995A 1994-11-17 1995-11-02 Process for preparing izocyanates YU49341B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4440917 1994-11-17
DE19521800A DE19521800C2 (en) 1994-11-17 1995-06-16 Process for the preparation of isocyanates

Publications (2)

Publication Number Publication Date
YU68995A YU68995A (en) 1998-08-14
YU49341B true YU49341B (en) 2005-07-19

Family

ID=6533464

Family Applications (1)

Application Number Title Priority Date Filing Date
YU68995A YU49341B (en) 1994-11-17 1995-11-02 Process for preparing izocyanates

Country Status (5)

Country Link
KR (1) KR100381878B1 (en)
DE (2) DE19521800C2 (en)
TW (1) TW333523B (en)
YU (1) YU49341B (en)
ZA (1) ZA959751B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10261187A1 (en) 2002-12-20 2004-07-08 Basf Ag Process for the preparation of isocyanates
CN108348889B (en) * 2015-09-24 2020-09-15 科思创德国股份有限公司 Method for producing isocyanates

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422976A (en) * 1981-04-07 1983-12-27 Mitsui Toatsu Chemicals, Incorporated Continuous preparation of organic isocyanates

Also Published As

Publication number Publication date
DE59506651D1 (en) 1999-09-23
DE19521800C2 (en) 1998-07-02
TW333523B (en) 1998-06-11
KR100381878B1 (en) 2003-11-17
DE19521800A1 (en) 1996-05-23
KR970707084A (en) 1997-12-01
YU68995A (en) 1998-08-14
ZA959751B (en) 1996-05-29

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