NL7300063A - - Google Patents

Info

Publication number
NL7300063A
NL7300063A NL7300063A NL7300063A NL7300063A NL 7300063 A NL7300063 A NL 7300063A NL 7300063 A NL7300063 A NL 7300063A NL 7300063 A NL7300063 A NL 7300063A NL 7300063 A NL7300063 A NL 7300063A
Authority
NL
Netherlands
Application number
NL7300063A
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 filed Critical
Publication of NL7300063A publication Critical patent/NL7300063A/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)
NL7300063A 1972-01-03 1973-01-03 NL7300063A (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00214829A US3857871A (en) 1972-01-03 1972-01-03 Process for reducing the acidity and hydrolyzable chloride content of polyisocyanates

Publications (1)

Publication Number Publication Date
NL7300063A true NL7300063A (cs) 1973-07-05

Family

ID=22800570

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7300063A NL7300063A (cs) 1972-01-03 1973-01-03

Country Status (3)

Country Link
US (1) US3857871A (cs)
JP (1) JPS4876839A (cs)
NL (1) NL7300063A (cs)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189354A (en) * 1976-07-10 1980-02-19 Bayer Aktiengesellschaft Process for the production of diisocyanatodiphenyl methane isomers with an adjusted content of chlorine compounds
JPS5470220A (en) * 1977-11-11 1979-06-05 Mitsui Toatsu Chem Inc Preparation of organic isocyanate
DE2933601C2 (de) * 1979-08-18 1985-07-11 Basf Ag, 6700 Ludwigshafen Verfahren zur Gewinnung von Mischungen aus Diphenyl-methan-diisocyanat-Isomeren und gegebenenfalls reinem 4,4'-Diphenylmethan-diisocyanat mit einem geringen Gehalt an Uretdionen und hydrolysierbaren Chlorverbindungen
EP0094386B1 (en) 1981-06-29 1986-03-05 Dulux Australia Ltd Stable aqueous film-forming dispersions
US5051152A (en) * 1989-09-26 1991-09-24 Air Products And Chemicals, Inc. Preparation of urethane prepolymers having low levels of residual toluene diisocyanate
US5185384A (en) * 1991-01-28 1993-02-09 The Dow Chemical Company Method for reducing hydrolyzable chloride in toluene diisocyanate
US5216042A (en) * 1991-07-10 1993-06-01 The Dow Chemical Company Process for preparing viscosity-stabilized reactive toluene diisocyanate distillation residues and blends thereof
KR970001071B1 (ko) * 1992-06-23 1997-01-25 미쓰이도오아쓰가가꾸 가부시끼가이샤 메틸렌 가교 폴리페닐렌 폴리이소시아네이트의 제조방법
DE19914292A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Verringerung des Chlorgehaltes von organischen Isocyanaten
DE19914291A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Absenkung des Chlorgehaltes von niedermolekularen Isocyanaten
DE19922572A1 (de) 1999-05-17 2000-11-23 Bayer Ag Verfahren zur Reinigung von organischen Isocyanaten, die so gereinigten organischen Isocyanate und ihre Verwendung
HU227148B1 (en) * 2003-01-27 2010-08-30 Borsodchem Zrt Process for diminution of acid content of polymethilene-poliphenyl-polyisocyanate mixture
DE10333929A1 (de) * 2003-07-25 2005-02-24 Bayer Materialscience Ag Herstellung von Mischungen von Di- und Polyisocyanaten der Diphenylmethanreihe mit hohen Gehalten an 4,4'-Methylendiphenyldiisocyanat und 2,4'-Methylendiphenyldiisocyanat
DE102004063221A1 (de) * 2004-12-22 2006-07-13 Lanxess Deutschland Gmbh Verfahren zur Reinigung organischer Isocyanate
FR3049950B1 (fr) * 2016-04-07 2020-09-25 Vencorex France Procede de preparation des xylylene diisocyanates xdi

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219678A (en) * 1963-02-28 1965-11-23 Olin Mathieson Process for reducing the hydrolyzable chlorine content of organic isocyanates
US3549504A (en) * 1966-05-05 1970-12-22 Takeda Chemical Industries Ltd Method for the purification of organic polyisocyanates by fractional distillation in presence of an inert gas or superheated vapor of an organic solvent

Also Published As

Publication number Publication date
US3857871A (en) 1974-12-31
JPS4876839A (cs) 1973-10-16

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