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1. WO1994019302 - A NOVEL PROCESS FOR THE PRODUCTION OF HIGH PURITY AND ULTRAPURE BISPHENOL-A

Publication Number WO/1994/019302
Publication Date 01.09.1994
International Application No. PCT/CN1994/000011
International Filing Date 16.02.1994
Chapter 2 Demand Filed 14.09.1994
IPC
C07C 37/20 2006.01
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 37/74 2006.01
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
74by distillation
C07C 37/84 2006.01
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 39/16 2006.01
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
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 37/74
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
74by distillation
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
Y02P 20/52
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
20Technologies relating to chemical industry
50Improvements relating to the production of bulk chemicals
52using catalysts, e.g. selective catalysts
Applicants
  • CHINA PETRO-CHEMICAL CORPORATION [CN]/[CN] (AllExceptUS)
  • TIANJIN UNIVERSITY [CN]/[CN] (AllExceptUS)
  • TAN, Qiu [CN]/[CN] (UsOnly)
  • ZHANG, Minhua [CN]/[CN] (UsOnly)
  • YU, Shenbo [CN]/[CN] (UsOnly)
  • LIU, Zongzhang [CN]/[CN] (UsOnly)
  • QIAN, Shenghua [CN]/[CN] (UsOnly)
  • LI, Chuanzhao [CN]/[CN] (UsOnly)
Inventors
  • TAN, Qiu
  • ZHANG, Minhua
  • YU, Shenbo
  • LIU, Zongzhang
  • QIAN, Shenghua
  • LI, Chuanzhao
Agents
  • CHINA PATENT AGENT (H.K.) LTD.
Priority Data
93101417.417.02.1993CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A NOVEL PROCESS FOR THE PRODUCTION OF HIGH PURITY AND ULTRAPURE BISPHENOL-A
(FR) NOUVEAU PROCEDE DE PRODUCTION DE BISPHENOL A DE GRANDE PURETE ET ULTRAPUR
Abstract
(EN)
A process for the production of high purity and ultrapure bisphenol-A is provided in which 4-12 mol phenol is reacted with 1 mol acetone in a multistage suspended bed reactor column (41) comprising a plurality of perforated trays (42) and downcomers (43) both having screens (44 and 45) provided thereon and catalytic resin particles (46) placed on the screens (44 and 45) in association with the trays (42). In operation, all of phenol is charged to the uppermost tray and all the required acetone is introduced to the column (41) through several inlets (52) along the wall of the column (41). An inert gas rising through the trays (42) and the catalytic particles (46) thereon stirs the reaction liquid and particles (46) therein to form a suspension and strips water generated during the reaction of phenol and acetone. Subsequently, the reaction mixture in the column is cooled to form adduct crystals of bisphenol-A with phenol and mother liquor, the adduct crystals are separated from the mother liquor, and phenol is removed from the adduct crystals. As a result of the stripping of water from the reaction mixture, high quality bisphenol-A can be obtained without the inclusion of concentration step before crystallization.
(FR)
Procédé de production de bisphénol A de grande pureté et ultrapur selon lequel on met en réaction de 4 à 12 mol de phénol et 1 mol d'acétone dans une colonne de réaction à lit suspendu et à plusieurs étages (41) comportant une pluralité de plateux perforés (42) et de tubes de descente (43) tous munis de tamis (44 et 45) et de particules de résine catalytique (46) placées sur les tamis (44 et 45) en association avec les plateaux (42). Pendant le fonctionnement, on place tout le phénol dans le plateau supérieur et on introduit tout l'acétone dans la colonne (41) par l'intermédiaire de plusieurs orifices (52) ménagés dans la paroi de la colonne (41). Un gaz inerte en écoulement ascendant à travers les plateaux (42) et les particules catalytiques (46) assure l'agitation du liqude réactionnel et des particules (46) présentes dans celui-ci de manière à former une suspension, et il extrait l'eau produite par la réaction entre le phénol et l'acétone. Par la suite on refroidit le mélange réactionnel dans la colonne afin de former des cristaux d'addition de la liqueur mère, et on extrait le phénol des cristaux d'addition. Grâce à l'extraction de l'eau du mélange réactionnel, on peut obtenir du bisphénol A de grande qualité sans procédér à une étape de concentration avant la cristallisation.
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