RO91101B - Procedeu pentru prepararea de dimetilester de acid tereftalic din p-xilen si metanol - Google Patents

Procedeu pentru prepararea de dimetilester de acid tereftalic din p-xilen si metanol

Info

Publication number
RO91101B
RO91101B RO117778A RO11777885A RO91101B RO 91101 B RO91101 B RO 91101B RO 117778 A RO117778 A RO 117778A RO 11777885 A RO11777885 A RO 11777885A RO 91101 B RO91101 B RO 91101B
Authority
RO
Romania
Prior art keywords
methanol
xylene
dymethyl
ester
preparing
Prior art date
Application number
RO117778A
Other languages
English (en)
Other versions
RO91101A (ro
Inventor
Rudolf Modic
Jorg Porshen
Anton Schoongen
Wirges Ralf
Original Assignee
Dynamit Nobel Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel Aktiengesellschaft filed Critical Dynamit Nobel Aktiengesellschaft
Publication of RO91101A publication Critical patent/RO91101A/ro
Publication of RO91101B publication Critical patent/RO91101B/ro

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester

Abstract

Inventia se refera la un procedeu pentru prepararea dimetilester de acid tereftalic din p-xilen si metanol la care filtrantul de la recristalizarea fractiei DMT-brut se evapora sau fractia continînd metanol si eventual alti curenti continînd metanol se rectifica la o presiune sub presiunea aplicata la esterificare si anume 2...20 at, de preferinta 4...8 at, vaporii continînd metanol astfel obtinuti sînt supusi la o compresie folosind un raport de compresie de 1,2/1...15 : 1, de preferinta 3 : 1...9 : 1, temperatura finala atinsa la comprimare fiind de 150...300 degree C, de preferinta 220...280 degree C, dupa care acesti vapori comprimati se folosesc la esterificarea oxidantului.
RO117778A 1984-03-03 1985-02-27 Procedeu pentru prepararea de dimetilester de acid tereftalic din p-xilen si metanol RO91101B (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3407925A DE3407925C1 (de) 1984-03-03 1984-03-03 Verfahren zur Herstellung von Terephthalsaeuredimethylester aus p-Xylol und Methanol

Publications (2)

Publication Number Publication Date
RO91101A RO91101A (ro) 1987-03-30
RO91101B true RO91101B (ro) 1987-04-01

Family

ID=6229536

Family Applications (1)

Application Number Title Priority Date Filing Date
RO117778A RO91101B (ro) 1984-03-03 1985-02-27 Procedeu pentru prepararea de dimetilester de acid tereftalic din p-xilen si metanol

Country Status (15)

Country Link
US (1) US4642369A (ro)
EP (1) EP0156133B1 (ro)
JP (1) JPS60204747A (ro)
AR (1) AR245686A1 (ro)
BG (1) BG45698A3 (ro)
BR (1) BR8500934A (ro)
CS (1) CS251094B2 (ro)
DE (2) DE3407925C1 (ro)
IN (1) IN163349B (ro)
MX (1) MX161720A (ro)
PL (1) PL145300B1 (ro)
RO (1) RO91101B (ro)
SU (1) SU1545938A3 (ro)
TR (1) TR22471A (ro)
YU (1) YU44491B (ro)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4026732A1 (de) * 1990-08-24 1992-02-27 Huels Chemische Werke Ag Verfahren zur reinigung eines oxidationsabgases mit energierueckgewinnung
DE19618152C1 (de) * 1996-05-07 1997-08-14 Huels Chemische Werke Ag Verfahren zur Trennung von Rohester im DMT-Prozeß
DE19750491A1 (de) * 1997-11-14 1999-05-20 Huels Chemische Werke Ag Hochsiederkreislauf im DMT-Prozeß
JP2011505490A (ja) 2007-12-03 2011-02-24 ジーヴォ，インコーポレイテッド 再生可能組成物
US8193402B2 (en) * 2007-12-03 2012-06-05 Gevo, Inc. Renewable compositions
WO2010099201A1 (en) * 2009-02-24 2010-09-02 Gevo, Inc. Methods of preparing renewable butadiene and renewable isoprene
AU2010303461A1 (en) * 2009-10-06 2012-04-26 Gevo, Inc. Integrated process to selectively convert renewable isobutanol to p-xylene
SG182407A1 (en) 2010-01-08 2012-08-30 Gevo Inc Integrated methods of preparing renewable chemicals
WO2011094131A1 (en) * 2010-01-29 2011-08-04 Genomatica, Inc. Microorganisms and methods for the biosynthesis of p-toluate and terephthalate
US8373012B2 (en) 2010-05-07 2013-02-12 Gevo, Inc. Renewable jet fuel blendstock from isobutanol
US8742187B2 (en) 2011-04-19 2014-06-03 Gevo, Inc. Variations on prins-like chemistry to produce 2,5-dimethylhexadiene from isobutanol
DE102012105876A1 (de) 2012-07-02 2014-01-02 Oxea Gmbh Verfahren zur Herstellung von Terephthalsäure und ihren Derivaten
FI125589B2 (en) * 2013-04-08 2022-03-31 Stora Enso Oyj Processes for deoxidation of bio-based materials and production of bio-based terephthalic acid and olefinic monomers
CN105985240A (zh) * 2015-02-04 2016-10-05 华东理工大学 增塑剂生产酯化过程强化新工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894978A (en) * 1956-07-02 1959-07-14 Chemische Werke Witten Gmbh Process of producing esters of phthalic acids by oxidation of xylene and toluic acid ester mixtures
DE1071688B (de) * 1958-06-14 1959-12-24 Basf Ag Verfahren zur Verbesserung der Oxydationsgeschwindigkeit der bei Luftoxydation von xylol oder von gemischen aus xylol und p-toluylsaeuremethylestern anfallenden gemische
NL110864C (ro) * 1958-11-07
US3076019A (en) * 1959-12-21 1963-01-29 Standard Oil Co Process for production of dimethyl terephthalate
DE2427875C3 (de) * 1974-06-10 1980-03-20 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur Gewinnung von Dimethylterephthalat und von Zwischenprodukten der Dimethylterephthalat-Herstellung
US4096340A (en) * 1975-06-03 1978-06-20 Teijin Hercules Chemical Co., Ltd. Process for the preparation of dimethyl terephthalate

Also Published As

Publication number Publication date
DE3560052D1 (en) 1987-02-19
MX161720A (es) 1990-12-18
DE3407925C1 (de) 1985-09-05
US4642369A (en) 1987-02-10
TR22471A (tr) 1987-07-22
EP0156133A1 (de) 1985-10-02
BG45698A3 (en) 1989-07-14
BR8500934A (pt) 1985-10-22
EP0156133B1 (de) 1987-01-14
JPH0566378B2 (ro) 1993-09-21
SU1545938A3 (ru) 1990-02-23
AR245686A1 (es) 1994-02-28
RO91101A (ro) 1987-03-30
PL145300B1 (en) 1988-08-31
YU31385A (en) 1987-10-31
YU44491B (en) 1990-08-31
JPS60204747A (ja) 1985-10-16
IN163349B (ro) 1988-09-10
CS251094B2 (en) 1987-06-11
PL252194A1 (en) 1985-09-24

Similar Documents

Publication Publication Date Title
RO91101B (ro) Procedeu pentru prepararea de dimetilester de acid tereftalic din p-xilen si metanol
JPS54122253A (en) Preparation of cis-alkylcyclohexanol
ES540014A0 (es) Procedimiento para la obtencion de composiciones adhesivas de divinileter con reticulacion termorreversible
US4061666A (en) 5,6-Didehydro-ω-aryl-11-deoxy-PGE2 analogs
US4088694A (en) 2-Decarboxy-2-hydroxymethyl-11-deoxy-PGE2 analogs
US4100198A (en) 2-Decarboxy-2-hydroxymethyl-cis-4,5-didehydro-9-deoxy-PGD2 compounds
ATE123015T1 (de) Verfahren zur herstellung von fettsäurealkylestern.
BG101136A (en) Method for the separation of raw ester in dmt process
US4203924A (en) 2-Decarboxy-2-hydroxymethyl-deoxy-9,10-didehydro-PGD2 analogs
ES2068812T3 (es) Cefadroxil cristalino y metodo para producirlo.
ES523022A0 (es) Un procedimiento para preparar acido 3-arginil-2-bencil(op-hidroxibencil)-propionico.
RO91879B (ro) Procedeu pentru prepararea de acid tereftalic prin intermediul dimetilesterului acidului tereftalic
US4208538A (en) 2-Decarboxy-2-hydroxymethyl-3,7-inter-m-phenylene-ω-phenyl-PGF2 compounds
JPS5461294A (en) Production of oligoestr acrylate
JPS5557535A (en) Preparation of delta-ketocarboxylic acid
SU1167149A1 (ru) Способ получени водорода
JPS64125A (en) Production of fluorosilicone oil
NO940229D0 (no) Esterblanding
JPS56123930A (en) Purifying method of n-hexenylaldehyde (n-hexylene aldehyde)
JPS5618958A (en) Preparation of n- d-alpha-methyl-beta-mercaptopropionyl -l- proline derivative
JPS57177094A (en) Coal slurry composition
JPS57155232A (en) Modified alkyd resin based on tall oil fatty acid for coating
KR890003665A (ko) 3,3-디메틸-4-펜테노인산의 제조방법
JPS5592386A (en) Preparation of 4-piperidone spiroketal compound
JPS5753434A (en) Production of vinyl acetate