NL7712270A - Methyl-di:tert.-butyl:phenol purification - by crystallisation from aq. methanol at low temp. - Google Patents

Methyl-di:tert.-butyl:phenol purification - by crystallisation from aq. methanol at low temp.

Info

Publication number
NL7712270A
NL7712270A NL7712270A NL7712270A NL7712270A NL 7712270 A NL7712270 A NL 7712270A NL 7712270 A NL7712270 A NL 7712270A NL 7712270 A NL7712270 A NL 7712270A NL 7712270 A NL7712270 A NL 7712270A
Authority
NL
Netherlands
Prior art keywords
methanol
butyl
prod
methyl
butylphenol
Prior art date
Application number
NL7712270A
Other languages
Dutch (nl)
Original Assignee
Sterlitamaxky O Promyshlenny
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 Sterlitamaxky O Promyshlenny filed Critical Sterlitamaxky O Promyshlenny
Priority to NL7712270A priority Critical patent/NL7712270A/en
Publication of NL7712270A publication Critical patent/NL7712270A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation

Landscapes

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

Abstract

Purificn. of 4-methyl-2,6-di-t-butylphenol (I) comprises crystallising at 0-5 degrees C from methanol contg. 3-10 w/w % of water, the ratio of solute to aq. methanol ranging from 1:1 to 1:4. The prod. is made by O-alkylation of phenol then aminomethylation and hydrogenolysis of the resultant N,N-dimethyl-3,5-di-ti-butyl-4-hydroxybenzylamine. Aq. methanol containing 3% of water leads to increased losses of prod. The prod. is a colourless stabiliser for synthetic rubber and polymers, an antioxidant for oils, fuels and other petroleum prods. as stabiliser in foods and drugs. The process removes impurities such as 2,6-di-t-butylphenol 2,4,6-tri-t-butylphenol and 2,6-di-ti-butyl-4-methylcyclohexanone with reduced losses of the desired prod. which is obtd. at a purity of =99.95%.
NL7712270A 1977-11-08 1977-11-08 Methyl-di:tert.-butyl:phenol purification - by crystallisation from aq. methanol at low temp. NL7712270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7712270A NL7712270A (en) 1977-11-08 1977-11-08 Methyl-di:tert.-butyl:phenol purification - by crystallisation from aq. methanol at low temp.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7712270A NL7712270A (en) 1977-11-08 1977-11-08 Methyl-di:tert.-butyl:phenol purification - by crystallisation from aq. methanol at low temp.

Publications (1)

Publication Number Publication Date
NL7712270A true NL7712270A (en) 1979-05-10

Family

ID=19829492

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7712270A NL7712270A (en) 1977-11-08 1977-11-08 Methyl-di:tert.-butyl:phenol purification - by crystallisation from aq. methanol at low temp.

Country Status (1)

Country Link
NL (1) NL7712270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355082B2 (en) * 2001-04-23 2008-04-08 Basf Aktiengesellschaft Method of purifying long-chain alkyl phenols and Mannich adducts thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355082B2 (en) * 2001-04-23 2008-04-08 Basf Aktiengesellschaft Method of purifying long-chain alkyl phenols and Mannich adducts thereof

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Legal Events

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