BR7503491A - Processo para a purificacao de isocianatos organicos - Google Patents

Processo para a purificacao de isocianatos organicos

Info

Publication number
BR7503491A
BR7503491A BR4468/75D BR7504468D BR7503491A BR 7503491 A BR7503491 A BR 7503491A BR 4468/75 D BR4468/75 D BR 4468/75D BR 7504468 D BR7504468 D BR 7504468D BR 7503491 A BR7503491 A BR 7503491A
Authority
BR
Brazil
Prior art keywords
isocianates
purification
organic
organic isocianates
Prior art date
Application number
BR4468/75D
Other languages
English (en)
Portuguese (pt)
Inventor
K Takagi
Y Kataoka
T Harada
Original Assignee
Sumitomo Bayer Urethane Co
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 Sumitomo Bayer Urethane Co filed Critical Sumitomo Bayer Urethane Co
Publication of BR7503491A publication Critical patent/BR7503491A/pt

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)
BR4468/75D 1974-06-04 1975-06-03 Processo para a purificacao de isocianatos organicos BR7503491A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6359274A JPS5337852B2 (OSRAM) 1974-06-04 1974-06-04

Publications (1)

Publication Number Publication Date
BR7503491A true BR7503491A (pt) 1976-05-25

Family

ID=13233681

Family Applications (1)

Application Number Title Priority Date Filing Date
BR4468/75D BR7503491A (pt) 1974-06-04 1975-06-03 Processo para a purificacao de isocianatos organicos

Country Status (8)

Country Link
US (1) US4065362A (OSRAM)
JP (1) JPS5337852B2 (OSRAM)
BE (1) BE829714A (OSRAM)
BR (1) BR7503491A (OSRAM)
DE (1) DE2524045A1 (OSRAM)
ES (1) ES438221A1 (OSRAM)
FR (1) FR2273799A1 (OSRAM)
GB (3) GB1481757A (OSRAM)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846814A1 (de) * 1978-10-27 1980-05-08 Bayer Ag Suspensionen von isocyanat-destillationsrueckstaenden in polyolen
DE2846815A1 (de) * 1978-10-27 1980-05-08 Ayer Ag Verfahren zur aufarbeitung von isocyanat-destillationsrueckstaenden
DE3440912A1 (de) * 1984-11-09 1986-05-15 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von waermefarbbestaendigen aliphatischen und/oder cycloaliphatischen diisocyanaten und ihre verwendung zur herstellung von farbverbesserten, modifizierten polyisocyanaten
US4677154A (en) * 1985-12-18 1987-06-30 Basf Corporation Stabilizer package for polyurethane comprising a substituted cresol and another costabilizer
DE4142769A1 (de) * 1991-12-23 1993-06-24 Bayer Hispania Ind S A Verfahren zur herstellung von isocyanaten und aufarbeitung des rueckstandes
EP1732965B1 (en) * 2003-07-14 2014-02-26 Vencorex US, Inc. Improved color stability of isocyanates
CN115537569B (zh) * 2022-11-09 2024-05-24 昆明理工大学 一种湿法炼锌福美钠钴渣综合利用的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055078A (en) * 1957-07-05 1962-09-25 William W Mcelrath Machine for processing non-shrinking fibrous materials
US2957903A (en) * 1959-03-24 1960-10-25 Du Pont Stabilization of organic isocyanates
US3458558A (en) * 1963-10-25 1969-07-29 Allied Chem Purification of isocyanates by reducing the hydrolyzable chlorine content
GB1192859A (en) * 1967-12-28 1970-05-20 Takeda Chemical Industries Ltd A Stabilised Isocyanate Composition
US3715381A (en) * 1969-06-11 1973-02-06 Allied Chem Polyisocyanate compositions stabilized against discoloration
GB1384065A (en) * 1971-11-30 1975-02-19 Ici Ltd Process for the purification of organic isocyanates

Also Published As

Publication number Publication date
JPS50154210A (OSRAM) 1975-12-12
US4065362A (en) 1977-12-27
GB1481756A (en) 1977-08-03
GB1481757A (en) 1977-08-03
GB1481755A (en) 1977-08-03
DE2524045A1 (de) 1975-12-18
FR2273799B1 (OSRAM) 1979-01-19
ES438221A1 (es) 1977-01-01
FR2273799A1 (fr) 1976-01-02
BE829714A (fr) 1975-12-01
JPS5337852B2 (OSRAM) 1978-10-12

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