UST955005I4 - Process for purification of alkyl methacrylates - Google Patents

Process for purification of alkyl methacrylates Download PDF

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Publication number
UST955005I4
UST955005I4 US05/161,356 US16135671A UST955005I4 US T955005 I4 UST955005 I4 US T955005I4 US 16135671 A US16135671 A US 16135671A US T955005 I4 UST955005 I4 US T955005I4
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US
United States
Prior art keywords
alkyl
purification
alkyl methacrylates
crystals
impurities
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.)
Pending
Application number
US05/161,356
Inventor
Athey C. Stutler
Max Statman
Alden E. Blood
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
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Priority to US05/161,356 priority Critical patent/UST955005I4/en
Application granted granted Critical
Publication of UST955005I4 publication Critical patent/UST955005I4/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • H01J29/68—Magnetic lenses using permanent magnets only
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Alkyl methacrylates are obtained free of impurities such as alkyl butyrates and assorted alkyl iodides by the partial crystallization of the crude alkyl methacrylate composition and subsequently contacting said crystals of alkyl methacrylate with liquid alkyl methacrylate to thereby free the crystals of occluded impurities.
US05/161,356 1967-12-26 1971-07-09 Process for purification of alkyl methacrylates Pending UST955005I4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/161,356 UST955005I4 (en) 1967-12-26 1971-07-09 Process for purification of alkyl methacrylates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69339267A 1967-12-26 1967-12-26
US05/161,356 UST955005I4 (en) 1967-12-26 1971-07-09 Process for purification of alkyl methacrylates

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US69339267A Continuation 1967-12-26 1967-12-26

Publications (1)

Publication Number Publication Date
UST955005I4 true UST955005I4 (en) 1977-02-01

Family

ID=26857760

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/161,356 Pending UST955005I4 (en) 1967-12-26 1971-07-09 Process for purification of alkyl methacrylates

Country Status (1)

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US (1) UST955005I4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6670501B1 (en) * 1997-07-12 2003-12-30 Lucite International Uk Limited Process for the production of methyl methacrylate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6670501B1 (en) * 1997-07-12 2003-12-30 Lucite International Uk Limited Process for the production of methyl methacrylate

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