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YU46992B - Postupak izdvajanja toluol-diizocijanata sadržanog u otpacima pri njegovoj proizvodnji - Google Patents

Postupak izdvajanja toluol-diizocijanata sadržanog u otpacima pri njegovoj proizvodnji

Info

Publication number
YU46992B
YU46992B YU4889A YU4889A YU46992B YU 46992 B YU46992 B YU 46992B YU 4889 A YU4889 A YU 4889A YU 4889 A YU4889 A YU 4889A YU 46992 B YU46992 B YU 46992B
Authority
YU
Yugoslavia
Prior art keywords
diosiocyants
toluol
separation
contained
production
Prior art date
Application number
YU4889A
Other languages
English (en)
Other versions
YU4889A (en
Inventor
G. Collas.
G. Gros
F. Sagi
Original Assignee
Rhone-Poulenc Chimie
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 Rhone-Poulenc Chimie filed Critical Rhone-Poulenc Chimie
Publication of YU4889A publication Critical patent/YU4889A/xx
Publication of YU46992B publication Critical patent/YU46992B/sh

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

POSTUPAK IZDVAJANJA TOLUOL-DIIZOCIJANATA SADRŽANOG U OTPACIMA PRI NJEGOVOJ PROIZVODNJI, naznačen time, što se pomenuti otpaci preradjuju neprekidno i suprotno od strujanja ugljendioksida u nadkritičnom stanju, na temperaturi nižoj od 100 C i pod pritiskom od 73 do 350 bara i što imaju pre prerade sledeći sastav: - od 70 do 100 % mase smeše - od 95 do 50 % mase toluol-diizocijanata i - od 5 do 50 % mase teških proizvoda, - od 0 do 30 % mase o-dihlorbenzola. Prijava sadrži još 3 zahteva.
YU4889A 1988-01-13 1989-01-11 Postupak izdvajanja toluol-diizocijanata sadržanog u otpacima pri njegovoj proizvodnji YU46992B (sh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8800466A FR2625742B1 (fr) 1988-01-13 1988-01-13 Procede de separation du toluene diisocyanate contenu dans les residus de sa fabrication

Publications (2)

Publication Number Publication Date
YU4889A YU4889A (en) 1990-10-31
YU46992B true YU46992B (sh) 1994-11-15

Family

ID=9362375

Family Applications (1)

Application Number Title Priority Date Filing Date
YU4889A YU46992B (sh) 1988-01-13 1989-01-11 Postupak izdvajanja toluol-diizocijanata sadržanog u otpacima pri njegovoj proizvodnji

Country Status (13)

Country Link
US (1) US4918220A (sh)
EP (1) EP0324701B1 (sh)
JP (1) JPH02758A (sh)
KR (1) KR890011828A (sh)
BR (1) BR8900108A (sh)
CA (1) CA1311245C (sh)
DD (1) DD278337A5 (sh)
DE (1) DE68900452D1 (sh)
ES (1) ES2026737T3 (sh)
FR (1) FR2625742B1 (sh)
PL (1) PL155845B1 (sh)
RU (1) RU1787155C (sh)
YU (1) YU46992B (sh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051152A (en) * 1989-09-26 1991-09-24 Air Products And Chemicals, Inc. Preparation of urethane prepolymers having low levels of residual toluene diisocyanate
US5962728A (en) * 1997-10-31 1999-10-05 Arco Chemical Technology, L.P. Isocyanate residue purification
US6160086A (en) * 1998-07-30 2000-12-12 3M Innovative Properties Company Process for removing impurities from polymers
US6307096B1 (en) 1999-12-28 2001-10-23 Bayer Corporation Method for making aliphatic diisocyanates
DE10037772A1 (de) * 2000-08-03 2002-02-14 Bayer Ag Verfahren zur Absenkung des Chlorgehaltes in niedermolekularen Isocyanaten
CN101870666B (zh) * 2010-05-23 2013-04-10 青岛科技大学 甲苯二异氰酸酯生产中尾气吸收溶剂的精制回收工艺
EP2872481B1 (de) * 2012-07-11 2016-08-24 Covestro Deutschland AG Verfahren zur aufarbeitung von destillationsrückständen aus der isocyanatherstellung
CN105461594B (zh) * 2015-12-14 2017-10-27 青岛科技大学 一种降低重溶剂法tdi产品酸值的方法
WO2018114846A1 (de) * 2016-12-21 2018-06-28 Covestro Deutschland Ag Verfahren zur herstellung eines isocyanats

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1555515A (sh) * 1966-05-05 1969-01-31
US3652705A (en) * 1968-10-03 1972-03-28 Mitsui Petrochemical Ind Process for the oligomerization of ethylene
CA998060A (en) * 1970-05-22 1976-10-05 Carl F. Irwin Recovery of organic isocyanate
GB1408745A (en) * 1970-09-23 1975-10-01 Res Ind Inc Method of recovering pure toluene diisocyanate from a polymeric residue product
BE786596A (fr) * 1971-07-30 1973-01-22 Ici Ltd Purification d'isocyanates organiques
FR2397396A1 (fr) * 1977-07-12 1979-02-09 Ugine Kuhlmann Procede de recuperation du toluene diisocyanate a partir des residus de fabrication

Also Published As

Publication number Publication date
BR8900108A (pt) 1989-09-05
EP0324701A1 (fr) 1989-07-19
KR890011828A (ko) 1989-08-22
CA1311245C (fr) 1992-12-08
FR2625742A1 (fr) 1989-07-13
JPH02758A (ja) 1990-01-05
EP0324701B1 (fr) 1991-11-27
FR2625742B1 (fr) 1990-06-22
PL277152A1 (en) 1989-09-18
PL155845B1 (pl) 1992-01-31
US4918220A (en) 1990-04-17
DD278337A5 (de) 1990-05-02
DE68900452D1 (de) 1992-01-09
ES2026737T3 (es) 1992-05-01
YU4889A (en) 1990-10-31
RU1787155C (ru) 1993-01-07

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