PT67236A - Method for purification of 4-methyl-2,6-di-tertbutylpheno - Google Patents

Method for purification of 4-methyl-2,6-di-tertbutylpheno

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Publication number
PT67236A
PT67236A PT6723677A PT6723677A PT67236A PT 67236 A PT67236 A PT 67236A PT 6723677 A PT6723677 A PT 6723677A PT 6723677 A PT6723677 A PT 6723677A PT 67236 A PT67236 A PT 67236A
Authority
PT
Portugal
Prior art keywords
prod
butylphenol
methanol
methyl
stabiliser
Prior art date
Application number
PT6723677A
Other languages
Portuguese (pt)
Other versions
PT67236B (en
Inventor
N Zakharova
V Borgardt
J Michurov
Z Shalimova
V Dolidze
A Liakumovich
G Rutman
Original Assignee
Novokuibyshevsk Filial
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 Novokuibyshevsk Filial, Sterlitamaxky O Promyshlenny filed Critical Novokuibyshevsk Filial
Priority to PT6723677A priority Critical patent/PT67236B/en
Publication of PT67236A publication Critical patent/PT67236A/en
Publication of PT67236B publication Critical patent/PT67236B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (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%.
PT6723677A 1977-11-03 1977-11-03 Method for purification of 4-methyl-2,6-di-tertbutylphenol PT67236B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PT6723677A PT67236B (en) 1977-11-03 1977-11-03 Method for purification of 4-methyl-2,6-di-tertbutylphenol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT6723677A PT67236B (en) 1977-11-03 1977-11-03 Method for purification of 4-methyl-2,6-di-tertbutylphenol

Publications (2)

Publication Number Publication Date
PT67236A true PT67236A (en) 1977-12-01
PT67236B PT67236B (en) 1979-04-16

Family

ID=20082151

Family Applications (1)

Application Number Title Priority Date Filing Date
PT6723677A PT67236B (en) 1977-11-03 1977-11-03 Method for purification of 4-methyl-2,6-di-tertbutylphenol

Country Status (1)

Country Link
PT (1) PT67236B (en)

Also Published As

Publication number Publication date
PT67236B (en) 1979-04-16

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