High purity 2,2,4-trimethyl-1,2-dihydroquinoline preparation method

The invention provides a process for preparing high purity 2,2,4-trimethyl-1,2-dihydroquinoline polymer, which comprises subjecting phenylamine and propanone to condensation reaction at the presence of acid catalyst, obtaining reaction mixture including 2,2,4-trimethyl-1,2-dihydroquinoline monomer,...

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Bibliographic Details
Main Author PARK CHONG-HO,KIM SAHNG-HA
Format Patent
LanguageEnglish
Published 08.02.2006
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:The invention provides a process for preparing high purity 2,2,4-trimethyl-1,2-dihydroquinoline polymer, which comprises subjecting phenylamine and propanone to condensation reaction at the presence of acid catalyst, obtaining reaction mixture including 2,2,4-trimethyl-1,2-dihydroquinoline monomer, neutralizing and washing the reaction mixture in hydrocarbon inert solvents under the condition of high temperate and low pressure, finally carrying out polymerization reaction at the presence of acid catalyst.
Bibliography:Application Number: CN2004170177