PROCESS FOR PRODUCING BISPHENOL-A

PROCESS FOR PRODUCING BISPHENOL-A

A process for preparing 2,2-bis(4-hydroxyphenyl)propane (p,p-bisphenol-A) from 2,4,4-trimethyl-2-(4-hydroxyphenyl)chroman (chroman 1.5) is disclosed. Phenol and chroman 1.5 are contacted over an acidic ion exchange resin at a given temperature for a given period of time. The process results in impro...

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Hauptverfasser: MAHALINGAM RATHINAM JOTHI, HASYAGAR UMESH KRISHNA, KISHAN GURRAM, BELFADHEL HATEM ABDALLAH
Format: Patent
Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator MAHALINGAM RATHINAM JOTHI
HASYAGAR UMESH KRISHNA
KISHAN GURRAM
BELFADHEL HATEM ABDALLAH
description A process for preparing 2,2-bis(4-hydroxyphenyl)propane (p,p-bisphenol-A) from 2,4,4-trimethyl-2-(4-hydroxyphenyl)chroman (chroman 1.5) is disclosed. Phenol and chroman 1.5 are contacted over an acidic ion exchange resin at a given temperature for a given period of time. The process results in improved quality of p,p-bisphenol-A, better performance of catalyst, improved raw material usage, and reduced waste.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title PROCESS FOR PRODUCING BISPHENOL-A
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