ZA73520B - Purification of isocyanates by reducing the hydrolyzable chlorine and acid content - Google Patents

Purification of isocyanates by reducing the hydrolyzable chlorine and acid content

Info

Publication number
ZA73520B
ZA73520B ZA730520A ZA73520A ZA73520B ZA 73520 B ZA73520 B ZA 73520B ZA 730520 A ZA730520 A ZA 730520A ZA 73520 A ZA73520 A ZA 73520A ZA 73520 B ZA73520 B ZA 73520B
Authority
ZA
South Africa
Prior art keywords
isocyanates
purification
reducing
acid content
hydrolyzable chlorine
Prior art date
Application number
ZA730520A
Other languages
English (en)
Inventor
P Adams
Original Assignee
Olin Corp
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 Olin Corp filed Critical Olin Corp
Publication of ZA73520B publication Critical patent/ZA73520B/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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
    • C08G18/727—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80 comprising distillation residues or non-distilled raw phosgenation products
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00—Manufacture of cellular products
ZA730520A 1972-05-12 1973-01-24 Purification of isocyanates by reducing the hydrolyzable chlorine and acid content ZA73520B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00252613A US3799963A (en) 1972-05-12 1972-05-12 Purification of isocyanates reducing the hydrolyzable chlorine and acid content

Publications (1)

Publication Number Publication Date
ZA73520B true ZA73520B (en) 1973-10-31

Family

ID=22956770

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA730520A ZA73520B (en) 1972-05-12 1973-01-24 Purification of isocyanates by reducing the hydrolyzable chlorine and acid content

Country Status (10)

Country Link
US (1) US3799963A (de)
JP (1) JPS51102B2 (de)
AU (1) AU463658B2 (de)
BR (1) BR7301915D0 (de)
CA (1) CA1002063A (de)
DE (1) DE2316028C3 (de)
FR (1) FR2184592B1 (de)
GB (1) GB1350374A (de)
IT (1) IT977208B (de)
ZA (1) ZA73520B (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887502A (en) * 1972-05-12 1975-06-03 Olin Corp Preparation of rigid polyurethane foam having improved aging properties
US4118586A (en) * 1977-09-12 1978-10-03 Olin Corporation Process for preparing dihydroxytoluene
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
US4661627A (en) * 1986-08-19 1987-04-28 The Dow Chemical Company Method for scavenging acidic impurities from polymeric isocyanates
US5260483A (en) * 1988-03-29 1993-11-09 Drexel University Preparation of n-aryl amides from isocyanates
US4904704A (en) * 1988-12-22 1990-02-27 The Dow Chemical Company Rigid foams prepared from treated toluene diisocyanate residue
EP0538500B1 (de) * 1991-10-19 1995-02-01 Basf Corporation Verfahren zur Herstellung von polymerischen Methylen-dyphenylen-diisocyanaten mit verminderter Farbe und Chloridgehalt
JPH0583374U (ja) * 1992-04-13 1993-11-12 株式会社丸山製作所 ポンプ装置固定構造
JPH0583375U (ja) * 1992-04-14 1993-11-12 株式会社丸山製作所 ポンプ装置固定構造
DE19914291A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Absenkung des Chlorgehaltes von niedermolekularen Isocyanaten
DE19914292A1 (de) 1999-03-30 2000-10-05 Bayer Ag Verfahren zur Verringerung des Chlorgehaltes von organischen 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
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
BRPI0519528A2 (pt) * 2004-12-22 2009-02-17 Lanxess Deutschand Gmbh processo para reduÇço do teor de cloro hodrolisÁvel em isocianatos orgÂnicos ou em misturas de isocianatos orgÂnicos, emprego de isocianatos
CN104159942B (zh) * 2011-12-28 2016-10-12 亨茨曼国际有限公司 包含多异氰酸酯组合物的可固化组合物
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
GB1094980A (en) * 1964-12-17 1967-12-13 Monsanto Co Process for treating organic diisocyanates
GB1192859A (en) * 1967-12-28 1970-05-20 Takeda Chemical Industries Ltd A Stabilised Isocyanate Composition

Also Published As

Publication number Publication date
FR2184592B1 (de) 1976-09-10
DE2316028A1 (de) 1973-11-22
BR7301915D0 (pt) 1974-07-11
AU463658B2 (en) 1975-07-31
FR2184592A1 (de) 1973-12-28
IT977208B (it) 1974-09-10
JPS4924916A (de) 1974-03-05
JPS51102B2 (de) 1976-01-05
US3799963A (en) 1974-03-26
AU5197373A (en) 1974-08-08
DE2316028B2 (de) 1979-08-09
GB1350374A (en) 1974-04-18
DE2316028C3 (de) 1980-05-14
CA1002063A (en) 1976-12-21

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