US20040211702A1 - Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers - Google Patents

Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers Download PDF

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US20040211702A1
US20040211702A1 US10/422,521 US42252103A US2004211702A1 US 20040211702 A1 US20040211702 A1 US 20040211702A1 US 42252103 A US42252103 A US 42252103A US 2004211702 A1 US2004211702 A1 US 2004211702A1
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aryl
alkyl
group
composition
water
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John Link
Sherif Eldin
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General Electric Co
Lummus Technology LLC
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General Electric Co
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Priority to US10/422,521 priority Critical patent/US20040211702A1/en
Assigned to GENERAL ELECTRIC COMPANY reassignment GENERAL ELECTRIC COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LINK, JOHN, ELDIN, SHERIF
Assigned to ABB LUMMUS GLOBAL INC. reassignment ABB LUMMUS GLOBAL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CORMIER, WILLIAM E., PASQUALE, GARY M., GAO, XINGTAO, YEH, CHUEN Y.
Priority to JP2006507016A priority patent/JP4620659B2/ja
Priority to CN2010105739825A priority patent/CN102093156B/zh
Priority to RU2005136220/04A priority patent/RU2349622C2/ru
Priority to KR1020057020071A priority patent/KR101099843B1/ko
Priority to PCT/US2004/007227 priority patent/WO2004096951A1/en
Priority to CNA2004800180047A priority patent/CN1813040A/zh
Priority to EP04719236A priority patent/EP1620526A1/en
Priority to TW093110368A priority patent/TWI372748B/zh
Priority to MYPI20041490A priority patent/MY140234A/en
Publication of US20040211702A1 publication Critical patent/US20040211702A1/en
Priority to US11/786,826 priority patent/US7414162B2/en
Priority to US12/168,510 priority patent/US20090032768A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C215/00—Compounds containing amino and hydroxy groups bound to the same carbon skeleton
    • C07C215/02—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C215/04—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being saturated
    • C07C215/06—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being saturated and acyclic
    • C07C215/16—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being saturated and acyclic the nitrogen atom of the amino group being further bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C215/00—Compounds containing amino and hydroxy groups bound to the same carbon skeleton
    • C07C215/02—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C215/22—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being unsaturated
    • C07C215/28—Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being unsaturated and containing six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
    • C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
    • C09K15/20—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen and oxygen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
    • C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
    • C09K15/20—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen and oxygen
    • C09K15/22—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen and oxygen containing an amide or imide moiety
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
    • C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
    • C09K15/28—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing nitrogen, oxygen and sulfur

Definitions

  • the present invention relates to water-soluble phenylenediamine compositions and methods for inhibiting polymerization of ethylenically unsaturated hydrocarbons.
  • stabilizing or inhibitor compositions have been introduced into the hydrocarbon stream at or upstream of a location where polymerization is likely to occur, such as where distillation is performed.
  • Phenylenediamines are widely used as antioxidants and polymerization inhibitors. However, their use is limited to hydrocarbon streams where the PDA is soluble.
  • a number of patents relate to the use of various PDA's, combinations of different PDA's and combinations of PDA's with other inhibitors to stabilize hydrocarbon fluids.
  • the composition will include a water-soluble phenylenediamine composition which acts as an antioxidant/free-radical polymerization inhibitor.
  • the present invention provides a water-soluble phenylenediamine composition which also functions as an antioxidant/free-radical polymerization inhibitor.
  • the compounds are of the following formula:
  • R 1 , R 2 and R 3 are independently selected from H, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —C(O)R 6 , —C(S)R 6 , —N—(R 7 )(R 8 ), aryl, and
  • R 5 is selected from the group consisting of H, alkyl, hydroxyalkyl, O, S, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl;
  • Z comprises one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclo, —CN, —NO 2 , —O—R 6 , —S—R 6 , and —N(R 7 )(R 8 ); and
  • R 6 , R 7 and R 8 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl and heterocyclo. Desirably, the compound corresponds the following formula:
  • the compounds of formula (I), above, may be added to a composition including an ethylenically unsaturated monomer to produce a composition resistant to polymerization.
  • the addition of the water-soluble phenylenediamine composition of the present invention to the monomer composition may occur during synthesis or processing or storage of the composition.
  • the compounds of the present invention include a reaction product of a phenylenediamine compound of the following formula:
  • R 1 , R 2 and R 3 are independently selected from the group consisting of, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —C(O)R 6 , —C(S)R 6 , —N—(R 7 )(R 8 ), and aryl;
  • Z comprises one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclo, —CN 1 —NO 2 , —O—R 6 , —S—R 6 , and —N(R 7 )(R 8 ); and
  • R 6 , R 7 and R 8 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl and heterocyclo,
  • R 5 is selected from the group consisting of H, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl.
  • Another aspect of the present invention provides a method of preparing a water-soluble phenylenediamine composition including the step of reacting a phenylenediamine compound of the following formula:
  • R 1 , R 2 and R 3 are independently selected from the group consisting of, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —C(O)R 6 , —C(S)R 6 , —N—(R 7 )(R 8 ), and aryl;
  • Z comprises one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclo, —CN, —NO 2 , —O—R 6 , —S—R 6 , and —N(R 7 )(R 8 ); and
  • R 6 , R 7 and R 8 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl and heterocyclo,
  • R 5 is selected from the group consisting of H, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl.
  • the phenylenediamine compound is 1,4-phenylenediamine.
  • a further aspect of the present invention provides a method of reducing or inhibiting fouling and deposit formation during hydrocarbon processing including the step of administering an effective amount of one or more water-soluble compounds of the following formula to a hydrocarbon stream at or upstream of a location where said fouling and/or said deposit formation may occur:
  • R 1 , R 2 and R 3 are independently selected from H, C 1 -C 18 alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), aryl, and
  • R 5 is selected from the group consisting of H, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl;
  • Z comprises one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclo, —CN, —NO 2 , —O—R 6 , —S—R 6 , and —N(R 7 )(R 8 );
  • R 6 , R 7 and R 8 are independently selected form the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl and heterocyclo; and wherein
  • said composition is water-soluble.
  • the present invention includes compounds of the formula:
  • NHR 3 group may be present in any of the ortho, para, and meta positions
  • At least one of R 1 , R 2 , and R 3 is
  • R 1 , R 2 and R 3 are independently selected from H, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —C(O)R 6 , —C(S)R 6 , —N—(R 7 )(R 8 ), aryl, and
  • R 5 is selected from the group consisting of H, alkyl, hydroxyalkyl, O, S, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl;
  • Z comprises one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclo, —CN, —NO 2 , —O—R 6 , —S—R 6 , and —N(R 7 )(R 8 ); and
  • R 6 , R 7 and R 8 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl and heterocyclo.
  • the second amine group is in the para position, corresponding to the following formula:
  • alkyl is meant to include substituted or unsubstituted, straight or branched chain saturated hydrocarbon groups, desirably having 1 to 20 carbons in the main chain.
  • unsubstituted groups include methyl, ethyl, propyl, isopropyl, n-butyl, t-butyl, isobutyl, pentyl, hexyl, isohexyl, heptyl, 4,4-dimethyl pentyl, octyl, 2,2,4-trimethylpentyl, nonyl, decyl, undecyl, dodecyl, and the like.
  • Substituents may include halogen, hydroxy, or aryl groups.
  • hydroxyalkyl is meant to include an alkyl group as described above with at least one hydroxy group substituent.
  • alkenyl is meant to include substituted or unsubstituted, straight or branched chain hydrocarbon groups including at least one carbon to carbon double bond in the chain, and desirably including 2 to 10 carbons in the normal chain.
  • unsubstituted alkenyl groups include ethenyl, propenyl, isobutenyl, butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, and the like.
  • Substituents may include those as described above.
  • alkynyl is meant to include substituted or unsubstituted, straight and branched chain hydrocarbon groups including at least one carbon to carbon triple bond in the chain, and preferably having 2 to 10 carbons in the normal chain.
  • unsubstituted groups include ethynyl, propynyl, butynyl, pentynyl, hexynyl, heptynyl, octynyl, nonynyl, decynyl, and the like.
  • Substituents may include those as described above.
  • cycloalkyl is meant to include substituted or unsubstituted, saturated cyclic hydrocarbon ring systems, preferably containing 1 to 3 rings and 3 to 7 carbons per ring.
  • exemplary unsubstituted such groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclodecyl, cyclododecyl, and adamantyl.
  • substituents include one or more alkyl groups as described above, or one or more groups described above as alkyl substituents.
  • cycloalkenyl is meant to include hydrocarbon ring systems which may be substituted or unsubstituted as described above for cycloalkyl, further containing at least one carbon to carbon double bond forming a partially unsaturated ring. These may also include substituents as described above.
  • heterocyclo or “heterocyclic” are meant to include substituted or unsubstituted, fully saturated or unsaturated, aromatic or non-aromatic cyclic groups having at least one heteroatom (such as N, O, and S) in at least one ring, desirably monocyclic or bicyclic groups having 3-6 atoms in each ring.
  • the heterocyclo group may be bonded through any carbon or heteroatom of the ring system.
  • heterocyclic groups include, without limitation, thienyl, furyl, pyrrolyl, pyridyl, imidazolyl, pyrrolidinyl, piperidinyl, azepinyl, indolyl, isoindolyl, quinolinyl, isoquinolinyl, benzothiazolyl, benzoxazolyl, benzimidazolyl, benzoxadiazolyl, and benzofurazanyl. These may also include substituents as described above.
  • aryl is meant to include substituted or unsubstituted monocyclic, bicyclic or tricyclic aromatic groups, desirably including one or two rings which contain only carbon ring atoms and 6 to 12 ring carbons.
  • aryl can also refer to an aryl group fused to a monocyclic cycloalkyl or monocyclic heterocycle in which the point(s) of attachment is/are on the aromatic portion. Examples of aryl groups include phenyl, biphenyl, and naphthyl.
  • Aryl rings fused to cycloalkyls are include indanyl, indenyl, and tetrahydronaphthyl.
  • aryl groups fused to heterocyclic groups include 2,3-dihydrobenzofuranyl, benzopyranyl, 1,4-benzodioxanyl, and the like.
  • Substituents may include those as described above as well as nitro groups.
  • the water-soluble phenylenediamine compounds of the present invention may be formed by the reaction of a phenylenediamine compound of the following formula:
  • R 1 , R 2 and R 3 is H
  • R 1 , R 2 and R 3 are independently selected from the group consisting of, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —C(O)R 6 , —C(S)R 6 , —N—(R 7 )(R 8 ), and aryl;
  • Z comprises one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclo, —CN, —NO 2 , —O—R 6 , —S—R 6 , and —N(R 7 )(R 8 ); and
  • R 6 , R 7 and R 8 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl and heterocyclo,
  • R 5 is selected from the group consisting of H, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl.
  • the heterocyclic compound is propylene oxide or butylene oxide.
  • reaction scheme produces a mixture of reaction products that may be separated by any of a variety of means known in the art, including chromatography.
  • reaction scheme the reaction of 1,4-phenylenediamine with the substituted heterocyclic compound may produce a mixture of five different products as shown in the following reaction scheme:
  • reaction of 1,4-phenylenediamine with propylene oxide will also produce a mixture of products which include N,N′-dihydroxypropylphenylenediamine, N,N-dihydroxypropylphenylenediamine, N-hydroxypropylphenylenediamine, N,N,N′-trihydroxypropylphenylenediamine, and N,N,N′,N′-tetrahydryoxypropylphenylenediamine.
  • the phenylenediamine compounds of the present invention are useful as antioxidant/free-radical polymerization inhibitors.
  • they are useful to stabilize hydrocarbon compositions including ethylenically unsaturated monomers by inhibiting polymerization. They are useful as inhibitors under both process and storage conditions including where the monomers are subjected to elevated temperatures, for example up to about 125° C.
  • the water-soluble phenylenediamine compositions are useful with a variety of ethylenically unsaturated monomers. These include, but are not limited to vinyl aromatic compounds such as styrene, substituted styrene, divinylbenzene, vinyl toluene, and vinyl naphthalene, and other ethylenically unsaturated monomers such as acrylic acid, alkyl acrylates, acrylonitrile, butadiene, dicyclopentadiene, cyanoacrylates, isoprene, and propylene.
  • vinyl aromatic compounds such as styrene, substituted styrene, divinylbenzene, vinyl toluene, and vinyl naphthalene
  • ethylenically unsaturated monomers such as acrylic acid, alkyl acrylates, acrylonitrile, butadiene, dicyclopentadiene, cyanoacrylates, isoprene, and propylene.
  • the useful water-soluble phenylenediamine compositions will retain at least one “—NH” group for effective polymerization inhibition.
  • the effective amount of the water-soluble phenylenediamine composition having at least one “—NH” group used in the methods of the present invention as a polymerization inhibitor is that amount which is sufficient to affect inhibition of polymerization and will vary according to the conditions under which the monomer is synthesized, processed, and/or stored. There are several factors that will affect the amount of inhibitor that is required. Factors that will require an increase in the amount of inhibitor are increased monomer concentration and increased temperature.
  • an effective concentration of the water-soluble phenylenediamine compositions of the present invention will range from about 0.5 ppm to about 2000 ppm, more desirably from about 1 ppm to about 50 ppm.
  • the compositions may be used in many hydrocarbon processing steps where premature polymerization is likely to occur including hydrocarbon cracking processes, preheating, distillation, hydrogenation, extraction, etc.
  • the water-soluble phenylenediamine composition may be added at a location upstream of these process locations.
  • the water-soluble phenylenediamine compositions may be added to a water stream, hydrocarbon stream or to a monomer composition alone, or after first being premixed with a solvent. Where a premix of the water-soluble phenylenediamine composition is desired, it may be first combined with a solvent such as water or an organic solvent including, but not limited to methanol, ethanol, acetone, pyridine, nitrobenzene, n-hexadecane, n-hexane, methylene chloride, dimethyl sulphoxide, chloroform, carbon tetrachloride, benzene, glycols, esters and ethers.
  • a solvent such as water or an organic solvent including, but not limited to methanol, ethanol, acetone, pyridine, nitrobenzene, n-hexadecane, n-hexane, methylene chloride, dimethyl sulphoxide, chloroform, carbon tetrachlor
  • phenylenediamine compounds of the present invention may include other phenylenediamines, hydroxylamines, nitroxides, and hindered phenols.
  • additional phenylenediamine may correspond to the following formula:
  • R a , R b and R c are independently selected from the group consisting of H, C 1 -C 18 alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl.
  • the water-soluble phenylenediamine compositions of the present invention have a wider variety of uses as compared to conventional phenylenediamine inhibitors. For example, during processing of acrylonitrile, there is contact with water and consequent fouling and deposit formation in the water sections. A phenylenediamine composition that is not water-soluble will not be effective as an inhibitor in this situation.
  • PDA's such as N-(1,4-dimethylpentyl)-N′-phenyl-p-phenylenediamine and N-(1,3-dimethylbutyl)-N-phenyl-p-phenylenediamine are not miscible with water. Instead, when they are added to water, they separate, forming two distinct layers, a PDA layer and a water layer. However, the PDA's of the present invention are completely miscible with water. When they are added to water, the PDA's of the present invention do not form a separate layer, i.e., a partition between the aqueous and hydrocarbon phases where it provides vinyl monomer free radical polymerization inhibition.
  • Acrylonitrile was chosen to represent reactive vinyl monomers.
  • the water-soluble phenylenediamines (PDA's) of the present invention were tested in acrylonitrile. Comparative testing was also performed using conventional polymerization inhibitors.
  • the comparative inhibitor compositions are shown in TABLE 1, while the inventive inhibitor compositions which were tested are shown in TABLE 2.
  • the parenthesis after the inhibitor names indicates the weight ratio of two or more inhibitors in the composition.
  • composition Inhibitor(s) I N,N,N′,N′-Tetrahydroxypropylphenylenediamine J N-hydroxypropylphenylenediamine and N,N′- dihydroxypropylphenylenediamine (reaction mixture) K N-hydroxypropylphenylenediamine and N,N′- dihydroxypropylphenylenediamine (reaction mixture)/ Hydroquinone (1:1) L N-hydroxypropylphenylenediamine and N,N′- dihydroxypropylphenylenediamine (reaction mixture)/ Benzoquinonediimide (1:1)
  • acrylonitrile was heated under an inert atmosphere in glass tubes.
  • a single inhibitor composition (A-L) was added to each tube.
  • tubes containing acrylonitrile were dosed with 2 ppm of various inhibitors and were heated at 110° C.
  • inventive compositions J, K and L performed better than the comparative compositions that included the known polymerization inhibitors hydroquinone, N-(1,4-dimethylpentyl)-N′-phenyl-p-phenylenediamine, and N-(1,3-dimethylbutyl)-N-phenyl-p-phenylenediamine.
  • inventive composition J has the advantage of being water-soluble which increases the variety of potential uses.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)
US10/422,521 2003-04-24 2003-04-24 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers Abandoned US20040211702A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US10/422,521 US20040211702A1 (en) 2003-04-24 2003-04-24 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers
EP04719236A EP1620526A1 (en) 2003-04-24 2004-03-10 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers
CNA2004800180047A CN1813040A (zh) 2003-04-24 2004-03-10 用于稳定烯键式不饱和化合物和单体的水溶性苯二胺组合物和方法
PCT/US2004/007227 WO2004096951A1 (en) 2003-04-24 2004-03-10 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers
CN2010105739825A CN102093156B (zh) 2003-04-24 2004-03-10 用于稳定烯键式不饱和化合物和单体的水溶性苯二胺组合物和方法
RU2005136220/04A RU2349622C2 (ru) 2003-04-24 2004-03-10 Композиции фенилендиамина, растворимые в воде, и способы стабилизации этиленненасыщенных соединений и мономеров
KR1020057020071A KR101099843B1 (ko) 2003-04-24 2004-03-10 수용성 펜일렌다이아민 조성물, 및 에틸렌형 불포화 화합물 및 단량체의 안정화 방법
JP2006507016A JP4620659B2 (ja) 2003-04-24 2004-03-10 水溶性フェニレンジアミン組成物並びにエチレン性不飽和化合物及びモノマーを安定化する方法
TW093110368A TWI372748B (en) 2003-04-24 2004-04-14 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers
MYPI20041490A MY140234A (en) 2003-04-24 2004-04-23 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers
US11/786,826 US7414162B2 (en) 2003-04-24 2007-04-13 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers
US12/168,510 US20090032768A1 (en) 2003-04-24 2008-07-07 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers

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US11/786,826 Expired - Fee Related US7414162B2 (en) 2003-04-24 2007-04-13 Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers
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KR (1) KR101099843B1 (enExample)
CN (2) CN1813040A (enExample)
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US20200339880A1 (en) * 2019-04-29 2020-10-29 Ecolab Usa Inc. Oxygenated aminophenol compounds and methods for preventing monomer polymerization
US12312291B2 (en) 2019-04-29 2025-05-27 Ecolab Usa Inc. Oxygenated aromatic amines and use as antioxidants

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EP2233505A1 (en) * 2009-03-23 2010-09-29 Total Petrochemicals Research Feluy Stabilised compositions comprising olefins
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