Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1993-07-13
1995-03-21
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568780, 568783, 568784, C07C 3716
Patent
active
053997867
ABSTRACT:
The present invention has as purpose a process for the manufacture of tert-butylphenols, mainly of tertbutyl-4-phenols from a phenol and an alkyltert-butylether. The improvement consists in separating in at least two steps, the reaction of phenol alkylation and transalkylation/isomerization of undesirable alkyltert-butylphenols, enabling the flexibilization of the type and quality of end product, and easily adapt to the demands of the market, plus the fact that the total yield improved as well as this improvement has good industrial hygiene properties.
Tert-butylphenols are useful intermediate products is the manufacture of phenolic resins or antioxydizing agents for rubber and for several plastic substances.
REFERENCES:
patent: 4359591 (1982-11-01), Fremery et al.
patent: 4370506 (1983-01-01), Ancillotti et al.
Chemical Abstracts, vol. 96, No. 17, 26 Apr. 1982, Columbus, Ohio, US; abstract No. 142445, *abrege* & BR-A-8 002 607 (Rhodia S.A.).
Aikawa, deceased Lumi T.
Queiroz Antonio U. B.
Lone Werren B.
Rhodia S/A
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