IN2012DN01380A - - Google Patents

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Publication number
IN2012DN01380A
IN2012DN01380A IN1380DEN2012A IN2012DN01380A IN 2012DN01380 A IN2012DN01380 A IN 2012DN01380A IN 1380DEN2012 A IN1380DEN2012 A IN 1380DEN2012A IN 2012DN01380 A IN2012DN01380 A IN 2012DN01380A
Authority
IN
India
Prior art keywords
vinyl aromatic
extractive distillation
dinitrophenol
mixture
various embodiments
Prior art date
Application number
Inventor
Amy Sealey
George A Ball
B Bryant Slimp
Original Assignee
Gtc Technology Us Llc
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 Gtc Technology Us Llc filed Critical Gtc Technology Us Llc
Publication of IN2012DN01380A publication Critical patent/IN2012DN01380A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/04—Purification; Separation; Use of additives by distillation
    • C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
    • C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • B01D3/40—Extractive distillation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/40—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts substituted by unsaturated carbon radicals
    • C07C15/42—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts substituted by unsaturated carbon radicals monocyclic
    • C07C15/44—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts substituted by unsaturated carbon radicals monocyclic the hydrocarbon substituent containing a carbon-to-carbon double bond
    • C07C15/46—Styrene; Ring-alkylated styrenes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/20—Use of additives, e.g. for stabilisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

High temperatures and oxygen exposure during extractive distillation can result in polymerization of vinyl aromatic compounds. In various embodiments  the present disclosure relates to methods for inhibiting polymerization of vinyl aromatic compounds during extractive distillation. In various embodiments  the methods include a) providing a mixture containing at least one vinyl aromatic compound  b) adding at least one dinitrophenol inhibitor to the mixture  and c) after step b)  performing an extractive distillation on the mixture to isolate the at least one vinyl aromatic compound. Purified styrene can be isolated by the methods described herein. In some embodiments  the dinitrophenol inhibitor is 2-sec-butyl-4 6-dinitrophenol (DNBP).
IN1380DEN2012 2009-07-17 2010-05-22 IN2012DN01380A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US22662809P 2009-07-17 2009-07-17
US12/705,937 US8771476B2 (en) 2009-07-17 2010-02-15 Methods for inhibiting polymerization of vinyl aromatic compounds during extractive distillation
PCT/US2010/035889 WO2011008343A1 (en) 2009-07-17 2010-05-22 Methods for inhibiting polymerization of vinyl aromatic compounds during extractive distillation

Publications (1)

Publication Number Publication Date
IN2012DN01380A true IN2012DN01380A (en) 2015-06-05

Family

ID=43449663

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1380DEN2012 IN2012DN01380A (en) 2009-07-17 2010-05-22

Country Status (9)

Country Link
US (1) US8771476B2 (en)
EP (1) EP2453999A4 (en)
KR (1) KR20120049270A (en)
CN (1) CN101955409B (en)
BR (1) BR112012001138A2 (en)
IN (1) IN2012DN01380A (en)
RU (1) RU2531918C2 (en)
TW (1) TWI492933B (en)
WO (1) WO2011008343A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2460714C1 (en) * 2011-06-27 2012-09-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Иркутский государственный технический университет" (ФГБОУ ВПО "ИрГТУ") Method of inhibiting thermopolymerisation when processing liquid pyrolysis products
RU2627765C1 (en) * 2016-08-09 2017-08-11 Федеральное государственное бюджетное учреждение науки Институт катализа им. Г.К. Борескова Сибирского отделения Российской академии наук (ИК СО РАН) Method of producing aromatic amines

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE745743A (en) * 1969-02-17 1970-07-16 Toray Industries METHODS OF RECOVERING STYRENE AND XYLENES FROM CRACKED OIL AND NEW PRODUCTS THUS OBTAINED (
JPS5021B1 (en) * 1970-07-18 1975-01-06
US4033829A (en) * 1974-12-26 1977-07-05 Monsanto Company Process for inhibiting polymerization of styrene during distillation
US3959395A (en) * 1974-12-26 1976-05-25 Monsanto Company Recovery of polymerization inhibitor
US4105506A (en) * 1977-02-24 1978-08-08 Cosden Technology, Inc. Polymerization inhibitor for vinyl aromatic compounds
US4182658A (en) 1977-11-23 1980-01-08 Cosden Technology, Inc. Emergency polymerization inhibitor system for vinyl aromatic compounds
DD135377A1 (en) * 1978-02-23 1979-05-02 Rainer Holm METHOD FOR POLYMERIZATION INHIBITIONING IN STYRENE EXTRACTIVE DISTILLATION
US4252615A (en) * 1978-07-18 1981-02-24 Cosden Technology, Inc. Polymerization inhibitor for vinyl aromatic compounds
US4596655A (en) * 1983-08-17 1986-06-24 The Dow Chemical Company Process for separating an ethylenically unsaturated hydrocarbon from a hydrocarbon mixture
US4514261A (en) * 1984-08-31 1985-04-30 El Paso Products Company Refining of tertiary butylstyrene
DE19513838A1 (en) * 1994-05-02 1995-11-09 Basf Ag Distn. of styrene, for use in prodn. of plastics
US5446220A (en) * 1994-08-24 1995-08-29 Betz Laboratories, Inc. Methods for inhibiting vinyl aromatic monomer polymerization
ZA972966B (en) 1996-05-21 1997-11-21 Glitsch Int Inc Recovery of styrene from purolysis gasoline by extractive distillation.
US5877385A (en) 1996-05-21 1999-03-02 Hfm International, Inc. Process including extractive distillation and/or dehydrogenation to produce styrene from petroleum feedstock including ethyl-benzene/xylene mixtures
US5910232A (en) * 1998-06-10 1999-06-08 Nalco/Exxon Energy Chemicals, L.P. Method for inhibiting polymer formation in styrene processing
US6395943B1 (en) * 1999-08-10 2002-05-28 Uop Llc Process for inhibiting the polymerization of vinyl aromatic compounds
US6348136B1 (en) * 2000-02-29 2002-02-19 Fina Technology, Inc. Method and apparatus for the purification of vinyl aromatic compounds

Also Published As

Publication number Publication date
RU2531918C2 (en) 2014-10-27
US20110015462A1 (en) 2011-01-20
EP2453999A4 (en) 2013-01-23
TW201103889A (en) 2011-02-01
RU2012105429A (en) 2013-08-27
BR112012001138A2 (en) 2016-02-23
CN101955409B (en) 2014-11-26
WO2011008343A1 (en) 2011-01-20
TWI492933B (en) 2015-07-21
KR20120049270A (en) 2012-05-16
EP2453999A1 (en) 2012-05-23
US8771476B2 (en) 2014-07-08
CN101955409A (en) 2011-01-26

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