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WO2005061556A1 - Procede permettant d'evaluer l'aptitude a la polymerisation d'un melange a base d'acide (meth)acrylique - Google Patents

Procede permettant d'evaluer l'aptitude a la polymerisation d'un melange a base d'acide (meth)acrylique Download PDF

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Publication number
WO2005061556A1
WO2005061556A1 PCT/JP2004/016111 JP2004016111W WO2005061556A1 WO 2005061556 A1 WO2005061556 A1 WO 2005061556A1 JP 2004016111 W JP2004016111 W JP 2004016111W WO 2005061556 A1 WO2005061556 A1 WO 2005061556A1
Authority
WO
WIPO (PCT)
Prior art keywords
acrylic acid
meth
polymerization
acid mixture
evaluating
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2004/016111
Other languages
English (en)
Japanese (ja)
Inventor
Shuhei Yada
Kenji Takasaki
Yasushi Ogawa
Yoshiro Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Chemical Corp
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 Mitsubishi Chemical Corp filed Critical Mitsubishi Chemical Corp
Publication of WO2005061556A1 publication Critical patent/WO2005061556A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/04—Acids, Metal salts or ammonium salts thereof
    • C08F20/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/50—Use of additives, e.g. for stabilisation

Definitions

  • the gist of the present invention is a method for evaluating the effect of a compound contained in a (meth) acrylic acid mixture on the polymerization of (meth) acrylic acid, wherein the (meth) acrylic acid mixture is evaluated.
  • a mixture of (meth) atalylic acid with the content of methoxy nodroquinone adjusted to less than lOppm is used as the base material and heated without adding a radical initiator, based on the time until (meth) acrylic acid is polymerized!
  • a method for evaluating the polymerizability of the (meth) acrylic acid mixture is evaluated.
  • the type (origin) of the crude (meth) acrylic acid of the raw material of the (meth) acrylic acid mixture evaluated in the present invention is not particularly limited.
  • (meth) atalylic acid obtained by a production process in which methoxy nodroquinone is added as a polymerization inhibitor and having a content of, for example, about 100 to 200 ppm can be used.
  • Specific examples include the above (meth) acrylic acid in the step of cooling (quenching) the reaction gas, the step of separating low-boiling substances, the step of purifying (meth) acrylic acid, and the like.
  • commercially available (meth) acrylic acid or the like as a reagent can be used. If the methoxyhydroquinone content of the (meth) acrylic acid mixture evaluated during the (meth) acrylic acid production process is 10 ppm or less, the (meth) acrylic acid mixture shall be used for evaluation as it is. Can also be.
  • the evaluation temperature (polymerization temperature) is usually 80 to 140 ° C, preferably 100 to 130 ° C. If the evaluation temperature exceeds 140 ° C, it will be close to the boiling point of acrylic acid, so it will be affected by air blowing, and the amount of the evaluation liquid will fluctuate due to the scattering of acrylic acid vapor, and accurate results cannot be obtained. When the evaluation temperature is 80 ° C or less, it takes a lot of time to start the polymerization of (meth) acrylic acid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polymerisation Methods In General (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

Cette invention concerne un procédé selon lequel l'influence de composés contenus dans un mélange à base d'acide (méth)acrylique, tels qu'un inhibiteur de polymérisation et des impuretés, sur la polymérisation de l'acide (méth)acrylique peut être facilement évaluée avec une grande précision et une bonne reproductibilité. Ce procédé, qui sert à évaluer l'influence de composés contenus dans un mélange à base d'acide (méth)acrylique sur la polymérisation de l'acide (méth)acrylique, consiste à utiliser un mélange à base d'acide (méth)acrylique présentant une teneur en méthoxyhydroquinone régulée à un niveau inférieur ou égal à 10 ppm comme mélange à base d'acide (méth)acrylique à évaluer, à le faire chauffer sans ajouter d'initiateur radicalaire puis à évaluer l'aptitude à la polymérisation du mélange sur la base du temps nécessaire pour obtenir la polymérisation de l'acide (méth)acrylique.
PCT/JP2004/016111 2003-12-24 2004-10-29 Procede permettant d'evaluer l'aptitude a la polymerisation d'un melange a base d'acide (meth)acrylique Ceased WO2005061556A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003426913 2003-12-24
JP2003-426913 2003-12-24

Publications (1)

Publication Number Publication Date
WO2005061556A1 true WO2005061556A1 (fr) 2005-07-07

Family

ID=34708878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/016111 Ceased WO2005061556A1 (fr) 2003-12-24 2004-10-29 Procede permettant d'evaluer l'aptitude a la polymerisation d'un melange a base d'acide (meth)acrylique

Country Status (2)

Country Link
CN (1) CN1697808A (fr)
WO (1) WO2005061556A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04288302A (ja) * 1990-07-20 1992-10-13 Ciba Geigy Ag 安定化モノマー組成物
JPH0873405A (ja) * 1994-09-01 1996-03-19 Nippon Shokubai Co Ltd （メタ）アクリル酸エステルの重合防止剤組成物および該組成物を用いた（メタ）アクリル酸エステルの重合防止方法
JPH09124713A (ja) * 1994-06-27 1997-05-13 Riemenschneider Lutz 安定化アクリル酸組成物
JPH1017524A (ja) * 1996-06-26 1998-01-20 Mitsubishi Chem Corp （メタ）アクリル酸の精製法
JP2002520379A (ja) * 1998-07-14 2002-07-09 チバ スペシャルティ ケミカルズ ホールディング インコーポレーテッド （メタ）アクリレートモノマーのための重合防止剤としての１−オキシル−４−ヒドロキシ−または４−アミノ−２，２，６，６−テトラメチルピペリジンの誘導体

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04288302A (ja) * 1990-07-20 1992-10-13 Ciba Geigy Ag 安定化モノマー組成物
JPH09124713A (ja) * 1994-06-27 1997-05-13 Riemenschneider Lutz 安定化アクリル酸組成物
JPH0873405A (ja) * 1994-09-01 1996-03-19 Nippon Shokubai Co Ltd （メタ）アクリル酸エステルの重合防止剤組成物および該組成物を用いた（メタ）アクリル酸エステルの重合防止方法
JPH1017524A (ja) * 1996-06-26 1998-01-20 Mitsubishi Chem Corp （メタ）アクリル酸の精製法
JP2002520379A (ja) * 1998-07-14 2002-07-09 チバ スペシャルティ ケミカルズ ホールディング インコーポレーテッド （メタ）アクリレートモノマーのための重合防止剤としての１−オキシル−４−ヒドロキシ−または４−アミノ−２，２，６，６−テトラメチルピペリジンの誘導体

Also Published As

Publication number Publication date
CN1697808A (zh) 2005-11-16

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