PROCESS FOR THE PRODUCTION OF METHYLENE DIPHENYL DIISOCYANATE ISOMER MIXTURES WITH SPECIFIC ISOMER DISTRIBUTIONS AND NEW PRODUCTS DERIVED THEREFROM

The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2′-MDI isomer content and a high 2,4′-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the...

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Main Authors GILLIS, Paul A, JEWELL, Dennis W, JANSMA, Gerard I, REED, Daniel J, MERENOV, Andrei S, ANDERSON, John Joseph, BREED, Ashley
Format Patent
LanguageEnglish
French
German
Published 01.11.2017
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Abstract The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2′-MDI isomer content and a high 2,4′-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4′-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications.
AbstractList The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2′-MDI isomer content and a high 2,4′-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4′-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications.
Author ANDERSON, John Joseph
JANSMA, Gerard I
BREED, Ashley
GILLIS, Paul A
JEWELL, Dennis W
MERENOV, Andrei S
REED, Daniel J
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– fullname: ANDERSON, John Joseph
– fullname: BREED, Ashley
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DocumentTitleAlternate PROCÉDÉ DE PRODUCTION DE MÉLANGES D'ISOMÈRES DE MÉTHYLÈNE DIPHÉNYL DIISOCYANATE (MDI) AVEC RÉPARTITIONS SPÉCIFIQUES DES ISOMÈRES ET NOUVEAUX PRODUITS DÉRIVÉS DE CEUX-CI
VERFAHREN ZUR HERSTELLUNG VON METHYLENDIPHENYLDIISOCYANATISOMERGEMISCHEN MIT SPEZIFISCHER ISOMERVERTEILUNG UND NEUE PRODUKTE DARAUS
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RelatedCompanies Dow Global Technologies LLC
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Snippet The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2′-MDI isomer content...
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SubjectTerms ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
Title PROCESS FOR THE PRODUCTION OF METHYLENE DIPHENYL DIISOCYANATE ISOMER MIXTURES WITH SPECIFIC ISOMER DISTRIBUTIONS AND NEW PRODUCTS DERIVED THEREFROM
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