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GB1262503A - Method of removing and preventing the formation of color contaminants in methacrylic acid - Google Patents

Method of removing and preventing the formation of color contaminants in methacrylic acid

Info

Publication number
GB1262503A
GB1262503A GB375070A GB375070A GB1262503A GB 1262503 A GB1262503 A GB 1262503A GB 375070 A GB375070 A GB 375070A GB 375070 A GB375070 A GB 375070A GB 1262503 A GB1262503 A GB 1262503A
Authority
GB
United Kingdom
Prior art keywords
methacrylic acid
formation
preventing
acid
impurity
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.)
Expired
Application number
GB375070A
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.)
Escambia Chemical Corp
Original Assignee
Escambia 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 Escambia Chemical Corp filed Critical Escambia Chemical Corp
Priority to GB375070A priority Critical patent/GB1262503A/en
Publication of GB1262503A publication Critical patent/GB1262503A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
    • 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

Landscapes

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

Abstract

1,262,503. Methacrylic acid stabilization. ESCAMBIA CHEMICAL CORP. 26 Jan., 1970, No. 3750/70. Heading C2C. Colour contaminants in methacrylic acid are removed, or their formation prevented, by contacting the acid at an elevated temperature with a metallic reducing agent in particulate form and consisting of magnesium, calcium, zinc or cadmium. The methacrylic acid may have been formed by the oxidation of isobutylene with an oxide of nitrogen to produce α- hydroxy-isobutyric acid followed by dehydration thereof, and the impurity is α-nitroisobutylene. A temperature range 80-90‹ C. is preferred and the metal, which may be finely powdered, should preferably be present in about 66 parts of metal to 1 part of impurity.
GB375070A 1970-01-26 1970-01-26 Method of removing and preventing the formation of color contaminants in methacrylic acid Expired GB1262503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB375070A GB1262503A (en) 1970-01-26 1970-01-26 Method of removing and preventing the formation of color contaminants in methacrylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB375070A GB1262503A (en) 1970-01-26 1970-01-26 Method of removing and preventing the formation of color contaminants in methacrylic acid

Publications (1)

Publication Number Publication Date
GB1262503A true GB1262503A (en) 1972-02-02

Family

ID=9764274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB375070A Expired GB1262503A (en) 1970-01-26 1970-01-26 Method of removing and preventing the formation of color contaminants in methacrylic acid

Country Status (1)

Country Link
GB (1) GB1262503A (en)

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