ES472514A1 - Procedimiento para la obtencion de poliamidas - Google Patents

Procedimiento para la obtencion de poliamidas

Info

Publication number
ES472514A1
ES472514A1 ES472514A ES472514A ES472514A1 ES 472514 A1 ES472514 A1 ES 472514A1 ES 472514 A ES472514 A ES 472514A ES 472514 A ES472514 A ES 472514A ES 472514 A1 ES472514 A1 ES 472514A1
Authority
ES
Spain
Prior art keywords
divinyl benzene
ion exchangers
water
styrene
acid groups
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
ES472514A
Other languages
English (en)
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of ES472514A1 publication Critical patent/ES472514A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/68—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
    • C07C209/78—Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton from carbonyl compounds, e.g. from formaldehyde, and amines having amino groups bound to carbon atoms of six-membered aromatic rings, with formation of methylene-diarylamines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Procedimiento para la obtención de poliaminas de la serie difenilmetano, con un alto contenido en 4,4'' isómeros y un bajo contenido en 2,2'' - y 2,4'' isómeros, por reacción de aminas aromáticas primarias o secundarias con formaldehído en presencia de catalizadores ácidos, sólidos presentes en fase heterogénea, en caso dado a través de la etapa intermedia de precondensados N-sustituidos obtenidos bajo ausencia de catalizadores ácidos, caracterizado porque a) como catalizador se emplean intercambiadores de iónes saturados con agua, en forma de gel, conteniendo grupos ácido sulfónico, a base de copolímeros de estireno-divinil-benceno que se han reticulado con un máximo de un 2% en peso, refererido al copolímero, de divilbenceno, o intercambiadores de iónes macroporosos, saturados con agua, conteniendo grupos ácidos sulfónico, a base de copolímeros de estireno-divinil-benceno, que se han reticulado como mínimo con un 18% en peso referido al copolímero, de divinilbenceno y b) la reacción catalítica se realiza a temperatura más elevada bajo condiciones de presión y de temperatura de manera que se evite ampliamente una separación por destilación del agua de condensación o de agua introducida en el sistema.
ES472514A 1977-08-16 1978-08-11 Procedimiento para la obtencion de poliamidas Expired ES472514A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772736862 DE2736862A1 (de) 1977-08-16 1977-08-16 Verfahren zur hestellung von polyaminen der diphenylmethanreihe

Publications (1)

Publication Number Publication Date
ES472514A1 true ES472514A1 (es) 1979-02-16

Family

ID=6016494

Family Applications (1)

Application Number Title Priority Date Filing Date
ES472514A Expired ES472514A1 (es) 1977-08-16 1978-08-11 Procedimiento para la obtencion de poliamidas

Country Status (6)

Country Link
EP (1) EP0000778B1 (es)
JP (1) JPS5432461A (es)
BR (1) BR7805250A (es)
DE (2) DE2736862A1 (es)
ES (1) ES472514A1 (es)
IT (1) IT1106878B (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3026554A1 (de) * 1980-07-12 1982-02-11 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von polyamingemischen mit einem hohen anteil an 4,4'-diaminodiphenylmethan
DE3142529A1 (de) * 1981-10-27 1983-05-05 Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München Verfahren zur herstellung von diaminen der diphenylmethanreihe
US20110021741A1 (en) * 2008-04-16 2011-01-27 Dow Global Technologies Inc. Process for making polyaminopolyphenyl methanes using a mixed solid acid catalyst system
DE102008001492A1 (de) * 2008-04-30 2009-11-05 Evonik Degussa Gmbh Verfahren zur Herstellung von Diaminodiphenylalkanen
DE102008001469A1 (de) * 2008-04-30 2009-11-05 Evonik Degussa Gmbh Verfahren zur Herstellung von Diaminodiphenylalkanen
DE102008002002A1 (de) * 2008-05-27 2009-12-03 Evonik Degussa Gmbh Chlor armes mehrstufiges Verfahren zur Herstellung von cycloaliphatischen Diisocyanaten

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179945B (de) * 1962-12-11 1964-10-22 Basf Ag Verfahren zur Herstellung von 4, 4'-Diaminodiphenylmethanen
US3367969A (en) * 1965-03-08 1968-02-06 Du Pont Process for the preparation of 4, 4'-methylenedianiline
BE754023A (fr) * 1969-07-31 1971-01-28 Kaiser Aluminium Chem Corp Procede pour la fabrication de polyamines
DD109615A1 (es) * 1972-08-14 1974-11-12
US3971829A (en) * 1974-11-18 1976-07-27 Jefferson Chemical Company, Inc. Preparation of methylene-bridged polyphenylpolyamine mixtures
DE2748968A1 (de) * 1976-11-06 1978-05-11 Elprochine Ag Verfahren zur herstellung von methylenbruecken aufweisenden polyarylaminen

Also Published As

Publication number Publication date
IT7850728A0 (it) 1978-08-11
JPS5432461A (en) 1979-03-09
EP0000778A1 (de) 1979-02-21
DE2736862A1 (de) 1979-03-01
IT1106878B (it) 1985-11-18
EP0000778B1 (de) 1980-07-23
BR7805250A (pt) 1979-04-24
DE2860072D1 (en) 1980-11-13

Similar Documents

Publication Publication Date Title
GB1506373A (en) Process for the production of polyisocyanates containing isocyanurate groups
GB1501574A (en) Preparation of polymethylene polyphenyl polyamines
ES472514A1 (es) Procedimiento para la obtencion de poliamidas
ES2001465A6 (es) Un procedimiento para la preparacion de una amina secundaria
EP0197612A3 (en) Interchangeable process scheme
CA1057308A (en) Process for the preparation of aromatic polyamines
KR100871212B1 (ko) 쿠밀페놀의 제조방법
EP0170986A3 (en) A process for the preparation of copolycarbonates of sulfonyl diphenol
ES444129A1 (es) Procedimiento para la obtencion de poliaminas aromaticas po-linucleares.
GB1500676A (en) Production of cresols
GB1222467A (en) Continuous methylenedianiline process
BE887893A (fr) Procede de preparation, catalysee par un superacide du resorcinol a partir du meta-isopropyl
KR890012927A (ko) 비스페놀 a 의 제조방법
CA2106769A1 (en) Process for conducting chemical reactions with formaldehyde
CA1161191A (en) Process for treating anion exchange resins
GB1397098A (en) Preparation of aryl amines
FR2444657A1 (fr) Procede de preparation du methyl-nonyl-acetaldehyde
EP0035329A1 (en) Prevention of polymer formation in dehydrogenation of p-ethyltoluene
JPH06321833A (ja) パラ−クミルフェノールの製造時に次亜燐酸を使用する色相の安定化法
JPS5231039A (en) Process for separation of m-cresol and p-cresol
GB1467990A (en) Continuous manufacture of n-alkylated arylamines
GB1384989A (en) Process for the production of polyaryl alkylene polyamines
GB1430695A (en) Process for the preparation of propargylamine
JPS5522630A (en) Preparation of alpha-phenylethylamine
JPS51136781A (en) Process for preparing aromatic containing olefinic copolymer

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990503