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公开(公告)号：US20240254281A1
公开(公告)日：2024-08-01
申请号：US18290498
申请日：2022-05-30
Applicant: SABIC Global Technologies B.V.
CPC classification number: C08G64/205 , B01J19/006 , B01J19/18 , C08G64/24 , B01J2219/00779 , B01J2219/029
Abstract: A reactor for the manufacture of interfacial polycarbonate by reacting phosgene and one or more bisphenols in a liquid phase, the reactor comprising a reactor vessel and reactor internals, wherein at least part of the inner surface of the reactor and/or part of the surface of the reactor internals is manufactured from or cladded with a titanium alloy comprising palladium.
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公开(公告)号：US20250058311A1
公开(公告)日：2025-02-20
申请号：US18721053
申请日：2022-12-12
Applicant: SABIC GLOBAL TECHNOLOGIES, B.V.
Inventor： Suman Kumar Sen , Prashant Patil , Surya Prakasa Rao Daliparthi , Dwairath DHAR , Amit Kumar Mondal , Paulus Johannes Maria Eijsbouts , Rudolf Martinus Petrus van der Heijden , Gert-Jan Schoenmakers
Abstract: The present invention relates to a method for the manufacture of a core-shell catalyst comprising the steps of a. providing core particles, b. functionalizing at least part of the surface of the core particles with a functionalizing agent thereby forming functionalized core particles, c. graft polymerizing at least one of aromatic vinyl compounds onto the functionalized core particles thereby forming core-shell particles wherein the core is comprised of the core particles and the shell is comprised of graft polymerized aromatic vinyl compounds and d. activating the shell by using a sulfonating agent wherein the core particles comprise or consists of glass particles and wherein the core particles are hydroxylated prior to step b). The present invention further relates to the use of the core-shell catalyst for the manufacture of bisphenol A by reacting phenol with acetone for increasing the selectivity towards the formation of p,p-bisphenol A.
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公开(公告)号：US20250058309A1
公开(公告)日：2025-02-20
申请号：US18721057
申请日：2022-12-12
Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
Inventor： Suman Kumar Sen , Prashant Patil , Surya Prakasa Rao Daliparthi , Dwairath Dhar , Amit Kumar Mondal , Paulus Johannes Maria Eijsbouts , Rudolf Martinus Petrus van der Heijden , Gert-Jan Schoenmakers , Mouli Murukutla
Abstract: The present invention relates to a method for carrying out a catalysed chemical reaction using one or more liquid reactants, preferably acetone and phenol to form bisphenol A, in an upflow reactor comprising feeding at least a portion of said reactants to a bottom section of the reactor positioned below a flow distributor plate, passing said portion through the flow distributor plate, passing said portion through a layer of inert particles positioned above and preferably in contact with said flow distributor plate, passing said portion through a catalyst layer comprising a particulate catalyst, said catalyst layer being positioned above and in contact with said layer of inert particles, wherein the reactants react to form a product stream, collecting said product stream via collecting means positioned above said catalyst layer. The invention also relates to a reactor assembly. The catalyst is a core-shell catalyst which is manufactured by graft polymerizing aromatic vinyl compounds onto the hydroxylated and functionalized core particles, followed by sulfonation.
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公开(公告)号：US20240308944A1
公开(公告)日：2024-09-19
申请号：US18576586
申请日：2022-06-13
Applicant: SABIC Global Technologies B.V.
CPC classification number: C07C37/84 , B01J14/005 , B01J31/08 , C07C37/74 , B01J2219/00033 , C07C2601/16
Abstract: A method for the continuous manufacture of bisphenol A comprising i) feeding one or more feed streams comprising phenol and acetone to a reactor and reacting said acetone and phenol in the presence of an ion-exchange resin catalyst thereby forming a product stream comprising bisphenol A, phenol, acetone, water and by-products, ii) crystallising bisphenol A and/or bisphenol A/phenol adduct crystals from said product stream in one or more crystallisation units thereby forming a slurry consisting of said crystals and a mother liquor, iii) separating the mother liquor from the crystals in one or more solid-liquid separation units, iv) heating the mother liquor in a heat recovery unit and feeding the heated mother liquor to a distillation column, v) separating the mother liquor in the distillation column thereby forming a bottom stream comprising phenol and a top stream comprising water, vi) cooling the bottom stream in said heat recovery unit.
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