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1. US20190308921 - MANUFACTURE OF BISPHENOL A

Office United States of America
Application Number 16317054
Application Date 10.07.2017
Publication Number 20190308921
Publication Date 10.10.2019
Publication Kind A1
IPC
C07C 39/16
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
39Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
12polycyclic with no unsaturation outside the aromatic rings
15with all hydroxy groups on non-condensed rings
16Bis(hydroxy phenyl)alkanes; Tris(hydroxy phenyl)alkanes
C07C 37/84
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
68Separation; Purification; Stabilisation; Use of additives
70by physical treatment
84by crystallisation
C07C 37/20
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
11by reactions increasing the number of carbon atoms
20using aldehydes or ketones
CPC
C07C 37/20
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
11by reactions increasing the number of carbon atoms
20using aldehydes or ketones
C07C 39/16
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
39Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
12polycyclic with no unsaturation outside the aromatic rings
15with all hydroxy groups on non-condensed rings ; , e.g. phenylphenol
16Bis-(hydroxyphenyl) alkanes; Tris-(hydroxyphenyl)alkanes
C07C 37/84
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
37Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
68Purification; separation; Use of additives, e.g. for stabilisation
70by physical treatment
84by crystallisation
Applicants SABIC GLOBAL TECHNOLOGIES B.V.
Inventors Paulus Johannes Maria Eijsbouts
Rene Heinink
Priority Data 16179051.4 12.07.2016 EP
Title
(EN) MANUFACTURE OF BISPHENOL A
Abstract
(EN)

The invention is directed to a method for the manufacture of bisphenol A, to the use of acid in a method for crystallisation of bisphenol A/phenol adduct, and to bisphenol A/phenol adduct crystals. The method for the manufacture of bisphenol A comprises: a) reacting phenol and acetone in the presence of an acidic catalyst to form a product mixture comprising bisphenol A; and b) crystallising a bisphenol A/phenol adduct from said product mixture, wherein said crystallisation is carried out in the presence of an acid, wherein the total amount of acid present during the crystallisation step is 5% or less by total weight of the reaction product.