METHOD FOR PRODUCING POLYISOCYANATE

Disclosed is a method for producing a polyisocyanate, which comprises a contact step wherein a reaction liquid obtained by reacting a polyamine with phosgene is brought into contact with a zeolite at 60-230°C, and a heating step wherein the reaction liquid, which has been brought into contact with a...

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Bibliographic Details
Main Authors MASUDA, TAKAHIRO, KANBARA, YOSHIYUKI
Format Patent
LanguageEnglish
French
Japanese
Published 03.09.2009
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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