GB1287192A - Manufacture of 4,4<1>-diphenylmethane diisocyanate and a mixture of methylene-bridged di(phenylisocyanates) and poly(phenylisocyanates) - Google Patents

Manufacture of 4,4<1>-diphenylmethane diisocyanate and a mixture of methylene-bridged di(phenylisocyanates) and poly(phenylisocyanates)

Info

Publication number
GB1287192A
GB1287192A GB202070A GB202070A GB1287192A GB 1287192 A GB1287192 A GB 1287192A GB 202070 A GB202070 A GB 202070A GB 202070 A GB202070 A GB 202070A GB 1287192 A GB1287192 A GB 1287192A
Authority
GB
United Kingdom
Prior art keywords
bridged
methylene
phenylisocyanates
diphenylmethane diisocyanate
mixture
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB202070A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1287192A publication Critical patent/GB1287192A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

1287192 Methylene-bridged di- and polyisocyanates BADISCHE ANILIN- & SODAFABRlK AG 15 Jan 1970 [16 Jan 1969] 2020/70 Heading C2C 4,41-Diphenylmethane diisocyanate and a mixture of methylene -bridged diisocyanates and polyisocyanates are prepared by condensing aniline with formaldehyde in a molar ratio of from 2:1 to 6:1 in the presence of strong mineral acids at temperatures of 10‹ to 90‹ C. at the start of the reaction rising to temperatures from 80‹ to 150‹ C. as condensation proceeds, distilling off from the mixture obtained after neutralization all or a portion of the diamines, separating from the distillate substantially pure 4,4<SP>1</SP>- diaminodiphenylmethane by crystallization from a solvent, reacting this with phosgene to form 4,4<SP>1</SP>-diphenylmethane diisocyanate, combining the distillation residue and the mother liquor from the crystallization step containing methylene-bridged primary diamines and polyamines and phosgenating this to the corresponding diisocyanates and polyisocyanates.
GB202070A 1969-01-16 1970-01-15 Manufacture of 4,4<1>-diphenylmethane diisocyanate and a mixture of methylene-bridged di(phenylisocyanates) and poly(phenylisocyanates) Expired GB1287192A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691901993 DE1901993A1 (en) 1969-01-16 1969-01-16 Process for the preparation of 4,4'-diphenylmethane diisocyanate and a mixture of di- and polyisocyanates

Publications (1)

Publication Number Publication Date
GB1287192A true GB1287192A (en) 1972-08-31

Family

ID=5722535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB202070A Expired GB1287192A (en) 1969-01-16 1970-01-15 Manufacture of 4,4<1>-diphenylmethane diisocyanate and a mixture of methylene-bridged di(phenylisocyanates) and poly(phenylisocyanates)

Country Status (6)

Country Link
JP (1) JPS5138713B1 (en)
BE (1) BE744475A (en)
DE (1) DE1901993A1 (en)
FR (1) FR2028448A1 (en)
GB (1) GB1287192A (en)
NL (1) NL7000584A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7709679B2 (en) * 2006-01-20 2010-05-04 Basf Aktiengesellschaft Process for simultaneously preparing 4,4′-diphenylmethanediamine and diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates
US10759736B2 (en) 2018-10-17 2020-09-01 Covestro Deutschland Ag Process for the preparation of di- and polyamines of the diphenylmethane series

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935318A1 (en) * 1979-08-31 1981-03-26 Bayer Ag, 51373 Leverkusen NEW DIISOCYANATES OR DIISOCYANATE MIXTURES OF THE DIPHENYLMETHANE SERIES, METHOD FOR THE PRODUCTION THEREOF, AND THEIR USE AS CONSTRUCTION COMPONENT IN THE PRODUCTION OF POLYURETHANE PLASTICS BY THE ISOCYANATE POLYADDITION METHOD
DE3032128A1 (en) * 1980-08-26 1982-04-08 Bayer Ag, 5090 Leverkusen NEW DIISOCYANATES OR DIISOCYANATE MIXTURES OF THE DIPHENYLMETHANE SERIES, METHOD FOR THE PRODUCTION THEREOF, AND THEIR USE AS CONSTRUCTION COMPONENT IN THE PRODUCTION OF POLYURETHANE PLASTICS BY THE ISOCYANATE POLYADDITION METHOD
DE3516023A1 (en) * 1985-05-04 1986-11-06 Krönig Papierherstellungsgesellschaft mbH, 4060 Viersen Flat pallet
DE9010271U1 (en) * 1990-07-06 1990-11-15 Nordwell GmbH Verpackungsvertrieb der Dansk Kraftemballage A/S, 2390 Flensburg Beam for a flat pallet
DE4100407A1 (en) * 1990-08-11 1992-02-13 Stabernack Gmbh Gustav Pallet made of corrugated paper - has baseplate to underside of which are fixed feet, with coating layer
DE4314504A1 (en) * 1992-05-29 1993-12-02 Tillmann Verpackungen Gmbh Disposable pallet made from corrugated cardboard - has ground support blocks of layers of corrugated board end-on to ground and with multilayer support surface.
JP5398546B2 (en) 2007-01-08 2014-01-29 ビーエーエスエフ ソシエタス・ヨーロピア Method for producing diphenylmethanediamine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7709679B2 (en) * 2006-01-20 2010-05-04 Basf Aktiengesellschaft Process for simultaneously preparing 4,4′-diphenylmethanediamine and diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates
US10759736B2 (en) 2018-10-17 2020-09-01 Covestro Deutschland Ag Process for the preparation of di- and polyamines of the diphenylmethane series

Also Published As

Publication number Publication date
BE744475A (en) 1970-07-15
NL7000584A (en) 1970-07-20
JPS5138713B1 (en) 1976-10-23
FR2028448A1 (en) 1970-10-09
DE1901993A1 (en) 1970-08-20

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees