Process for separating reaction mixtures and recycling quaternary salts and bases
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07F-009/02
C07F-005/04
C07C-227/06
출원번호
US-0320061
(2002-12-16)
우선권정보
DE-0064143 (2001-12-27)
발명자
/ 주소
Fischer, Peter
Hansen, Sven Michael
Reisinger, Claus-Peter
출원인 / 주소
Bayer Aktiengesellschaft
대리인 / 주소
Gil, Joseph C.
인용정보
피인용 횟수 :
1인용 특허 :
9
초록▼
A process for the removal and recovery of quaternary salt (A) and base (D) from a reaction mixture is disclosed. The reaction mixture resulting from oxidative direct carbonylation contains in addition to (A) and (D), at least one hydroxyaromatic compound (B) and at least one reaction product (C) and
A process for the removal and recovery of quaternary salt (A) and base (D) from a reaction mixture is disclosed. The reaction mixture resulting from oxidative direct carbonylation contains in addition to (A) and (D), at least one hydroxyaromatic compound (B) and at least one reaction product (C) and optionally a solvent, and the process entails a) adding acid to the reaction mixture to cause conversion of (D) into a hydroxyaromatic compound (B2) b) separating the reaction mixture into b1.) that contains (C) and optionally (B) and/or (B2) and b2.) that contains (A) and optionally (B) and/or (B2), and c) reacting b1.) with a base (E) to re-form (D).
대표청구항▼
1. A process for the removal and recovery of quaternary salt (A) and base (D) from a reaction mixture that contains in addition to (A) and (D), at least one hydroxyaromatic compound (B) and at least one reaction product (C) and optionally a solvent, comprising a) adding acid to the reaction mixtur
1. A process for the removal and recovery of quaternary salt (A) and base (D) from a reaction mixture that contains in addition to (A) and (D), at least one hydroxyaromatic compound (B) and at least one reaction product (C) and optionally a solvent, comprising a) adding acid to the reaction mixture to cause conversion of (D) into a hydroxyaromatic compound (B2) b) separating the reaction mixture into b1) that contains (C), a portion of (B2), and optionally (B) andb2 that contains (A), a portion of (B2), and optionally (B), wherein the separation is performed by a method selected from distillation, extraction, cascades and combinations thereof, and c) reacting b1 and b2) with a base (E) to re-form (D) where (A) conforms to (Q n+)m(Ym−)n, and(D) conforms to (W l+)k[(−O)kAr′]l,wherein n, m, k and l independently one of the others represent integers, Ar′ represents an aromatic group, Q n+ denotes a hexaalkylguanidinium ion or XRr+)n, wherein X denotes an atom selected from group consisting of group Va and group Via of the Periodic Table of the elements, r is an integer of 1 to 4, n is an integer of 1 to 10, and R independently represent C1-C18-alkyl, C1-C18-cycloalkyl, C7-C18-aralkyl or C6-C18-aryl with the proviso that a pair of substituents radicals may be replaced by a ring system, Ym− is at least one member selected from the group consisting of halides, nitrate, sulfate, hydrogen sulfate, carbonate, hydrogen carbonate, phosphate, hydrogen phosphate, dihydrogen phosphate, tetrafluoroborate, perchlorate, carboxylates and hexafluorophosphates and m is an integer of 1 to 3, Wl+ is at least one member selected from the group consisting of alkali metal, alkaline earth metal, rare earth metal, transition metal and quaternary cations Qn+, (B) and (B2) independently correspond to the formula Ar(OH)p, wherein Ar represents a aromatic group and p is an integer from 1 to 4, (E) is one or more hydroxide of a member selected from the group consisting of alkaline earth metal, alkali metal, ammonium and Qn+ and wherein acid is at least one member selected from the group consisting of hydrobromic acid, hydrochloric acid, carbon dioxide, phosphoric acid, dihydrogen phosphate, nitric acid, formic acid, acetic acid, oxalic acid, hydrogen sulfate and sulfuric acid.2. The process according to claim 1, in which B and B2 are identical.3. The process according to claim 1, in which C contains a diaryl carbonate.4. The process according to claim 1, wherein reaction product contains a solvent that is at least one member selected from the group consisting of halogenated hydrocarbons, dialkylethers, chlorobenzene, dichlorobenzene, fluorobenzene, benzene, anisol, methylene chloride, 1,2-dichloroethane, dioxan, tetrahydrofuran, t-butyl methyl ether and etherified glycols.5. The process according to claim 1, wherein reaction product contains an aromatic solvent.6. The process according to claim 1, in which the acid is added as an aqueous solution.7. The process according to claim 1, in which step a) is performed by reactive extraction.8. The process according to claim 1, in which step c) is performed by reactive extraction and/or by reactive distillation.
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이 특허에 인용된 특허 (9)
Hallgren John E. (Scotia NY), Catalytic aromatic carbonate process using manganese tetradentate redox co-catalysts.
Nakasato Yuzaburo (Gunma JPX) Fukabori Mitsuhiko (Hyogo JPX) Iwasaki Takaaki (Hokkaido JPX) Ayuta Humio (Chiba JPX) Otsuka Sumio (Kagawa JPX) Miyawaki Yoshitaka (Kagawa JPX), Environmentally acceptable method of disposing of an inflator from an air bag system loaded in a scrapped automobile.
Idel Karsten (Krefeld DEX) Freitag Dieter (Krefeld DEX) Ostlinning Edgar (Duesseldorf DEX), Extraction of onium salts from process waters and waste waters.
Ofori John Yaw ; Shafer Sheldon Jay ; Pressman Eric James ; Kailasam Ganesh ; Lee Julia Lam, Method for recovering and recycling catalyst constituents.
Ofori John Yaw ; Pressman Eric James ; Patel Ben Purushotam ; Moreno Phillip Oscar ; Battista Richard Anthony, Method for recycle of bromide-containing catalyst constituents.
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