NL7906291A - Werkwijze voor de bereiding van organische mono- en polyisocyanaten door thermische splitsing van de hydrochloriden van trigesubstitueerde urea. - Google Patents

Werkwijze voor de bereiding van organische mono- en polyisocyanaten door thermische splitsing van de hydrochloriden van trigesubstitueerde urea. Download PDF

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Publication number
NL7906291A
NL7906291A NL7906291A NL7906291A NL7906291A NL 7906291 A NL7906291 A NL 7906291A NL 7906291 A NL7906291 A NL 7906291A NL 7906291 A NL7906291 A NL 7906291A NL 7906291 A NL7906291 A NL 7906291A
Authority
NL
Netherlands
Prior art keywords
urea
reaction
solvent
isocyanate
hydrogen chloride
Prior art date
Application number
NL7906291A
Other languages
English (en)
Dutch (nl)
Original Assignee
Akzo Nv
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 Akzo Nv filed Critical Akzo Nv
Publication of NL7906291A publication Critical patent/NL7906291A/nl

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/06—Preparation of derivatives of isocyanic acid from or via ureas
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
NL7906291A 1978-08-26 1979-08-20 Werkwijze voor de bereiding van organische mono- en polyisocyanaten door thermische splitsing van de hydrochloriden van trigesubstitueerde urea. NL7906291A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2837341 1978-08-26
DE2837341A DE2837341C2 (de) 1978-08-26 1978-08-26 Verfahren zur Herstellung von organischen Mono- und Polyisocyanaten durch thermische Spaltung der Hydrochloride trisubstituierter Harnstoffe

Publications (1)

Publication Number Publication Date
NL7906291A true NL7906291A (nl) 1980-02-28

Family

ID=6047992

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7906291A NL7906291A (nl) 1978-08-26 1979-08-20 Werkwijze voor de bereiding van organische mono- en polyisocyanaten door thermische splitsing van de hydrochloriden van trigesubstitueerde urea.

Country Status (16)

Country Link
US (1) US4223145A (pt)
JP (1) JPS5533480A (pt)
AT (1) AT362773B (pt)
AU (1) AU523314B2 (pt)
BE (1) BE878409A (pt)
BR (1) BR7905159A (pt)
CA (1) CA1116621A (pt)
DD (1) DD145632A5 (pt)
DE (1) DE2837341C2 (pt)
ES (1) ES483389A1 (pt)
FR (1) FR2434144A1 (pt)
GB (1) GB2029413B (pt)
IT (1) IT1119804B (pt)
NL (1) NL7906291A (pt)
SE (1) SE7907068L (pt)
ZA (1) ZA793327B (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179292A (ja) * 1982-04-13 1983-10-20 Nippon Synthetic Chem Ind Co Ltd:The 炭化水素系液状混合物の安定化法
GB8300016D0 (en) * 1983-01-04 1983-02-09 Exxon Research Engineering Co Middle distillate compositions
GB8618397D0 (en) * 1986-07-29 1986-09-03 Exxon Chemical Patents Inc Liquid fuel compositions
US4871871A (en) * 1988-11-03 1989-10-03 Arco Chemical Technology, Inc. Process for the preparation of aromatic mono- and polyisocyanates
US4873364A (en) * 1988-12-09 1989-10-10 Arco Chemical Technology, Inc. Process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (diisocyanates)
US4883908A (en) * 1989-02-02 1989-11-28 Arco Chemical Technology, Inc. Process for the preparation of aromatic isocyanates from dialkyl ureas using an organic sulfonic acid promoter
US4978779A (en) * 1989-03-09 1990-12-18 Arco Chemical Technology, Inc. Preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (isocyanates) using an organic sulfonic acid promoter
JPH03173859A (ja) * 1989-04-06 1991-07-29 Arco Chem Technol Inc 芳香族アミンからの芳香族モノーおよびポリイソシアネートの製造方法
EP0402020A1 (en) * 1989-06-05 1990-12-12 Arco Chemical Technology, Inc. An integrated process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (isocyanates) from diamines and polyamines
DE10021742A1 (de) * 2000-05-04 2001-11-08 Bayer Ag Verfahren zur Herstellung organischer Monoisocyanate
EP2042485A1 (en) * 2007-09-28 2009-04-01 Huntsman International Llc Process for fractionating a mixture of polyisocyanates
JP5165815B2 (ja) * 2011-06-24 2013-03-21 昭和電工株式会社 エチレン性不飽和基含有イソシアネート化合物の製造方法
CN103351312A (zh) * 2013-07-01 2013-10-16 太仓市恒益医药化工原料厂 一种用于苯二异氰酸酯的制备工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773086A (en) * 1953-01-19 1956-12-04 Monsanto Chemicals Production of isocyanates from substituted ureas
FR1473821A (fr) * 1963-07-05 1967-03-24 Carbochimique Et Inst Francais Nouveaux procédé de fabrication d'esters isocyaniques
GB1359032A (en) * 1971-06-01 1974-07-03 Quimco Gmbh Process for preparing organic mono-and polyisocyanates
JPS4964421A (pt) * 1972-10-20 1974-06-21
US3936484A (en) * 1974-09-25 1976-02-03 Atlantic Richfield Company Production of isocyanates from substituted ureas

Also Published As

Publication number Publication date
JPS5533480A (en) 1980-03-08
SE7907068L (sv) 1980-02-27
CA1116621A (en) 1982-01-19
AT362773B (de) 1981-06-10
DE2837341C2 (de) 1983-02-17
DD145632A5 (de) 1980-12-24
JPS6320218B2 (pt) 1988-04-26
BR7905159A (pt) 1980-05-06
IT1119804B (it) 1986-03-10
ES483389A1 (es) 1980-04-16
IT7949869A0 (it) 1979-07-26
FR2434144A1 (fr) 1980-03-21
GB2029413A (en) 1980-03-19
ATA481279A (de) 1980-11-15
DE2837341A1 (de) 1980-03-20
BE878409A (fr) 1979-12-17
ZA793327B (en) 1980-07-30
FR2434144B1 (pt) 1984-10-05
GB2029413B (en) 1982-11-03
AU4867779A (en) 1980-03-06
US4223145A (en) 1980-09-16
AU523314B2 (en) 1982-07-22

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