NL7100724A - Prodn of alkyladipic acids by oxadation of - alkylcyclohexanol with hno3 - Google Patents

Prodn of alkyladipic acids by oxadation of - alkylcyclohexanol with hno3

Info

Publication number
NL7100724A
NL7100724A NL7100724A NL7100724A NL7100724A NL 7100724 A NL7100724 A NL 7100724A NL 7100724 A NL7100724 A NL 7100724A NL 7100724 A NL7100724 A NL 7100724A NL 7100724 A NL7100724 A NL 7100724A
Authority
NL
Netherlands
Prior art keywords
hno3
trialkyladipic
gamma
alpha
acids
Prior art date
Application number
NL7100724A
Other versions
NL143896B (en
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
Priority claimed from DEB54181A external-priority patent/DE1111163B/en
Application filed filed Critical
Priority to NL717100724A priority Critical patent/NL143896B/en
Publication of NL7100724A publication Critical patent/NL7100724A/en
Publication of NL143896B publication Critical patent/NL143896B/en

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
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/316—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with oxides of nitrogen or nitrogen-containing mineral acids

Landscapes

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

Abstract

alpha, alpha, gamma- and alpha, gamma, gamma-isomers of trialkyladipic acids are prepd. by reacting trialkylcyclohexanol at a temperature below 65 degrees C with HNO3 and an initial concentration of moer than 65% in a ratio HNO3/organic material of not more than 3.5:1 but using at least the stoichiometric quantity of HNO3. The mixture must then be cooled until trialkyladipic acid crystallises. The pref. reaction temp. is 40-50 degrees C and the HNO3 used for the oxidation contain esp. trialkyladipic acid, esp. by using recycled acid. The reaction products may be used as starting materials in the preparation of polyamides. The process may be carried out on technical scale with very high yields and purity.
NL717100724A 1959-07-25 1971-01-19 PROCESS FOR THE PREPARATION OF THE ALFA, ALFA, GAMMA AND ALFA, GAMMA, GAMMA, ISOMERS OF TRIALKYLADIPIC ACIDS. NL143896B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL717100724A NL143896B (en) 1959-07-25 1971-01-19 PROCESS FOR THE PREPARATION OF THE ALFA, ALFA, GAMMA AND ALFA, GAMMA, GAMMA, ISOMERS OF TRIALKYLADIPIC ACIDS.

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DEB54181A DE1111163B (en) 1959-07-25 1959-07-25 Process for the preparation of mixtures from ª ‡, ª ‡, ª † - and ª ‡, ª †, ª † -trimethyladipic acid
DEB0054955 1959-09-26
DE1959B0056111 DE1418074B2 (en) 1959-07-25 1959-12-31 METHOD FOR MANUFACTURING TRIMETHYLADIPIC ACIDS
NL254152 1960-07-25
NL717100724A NL143896B (en) 1959-07-25 1971-01-19 PROCESS FOR THE PREPARATION OF THE ALFA, ALFA, GAMMA AND ALFA, GAMMA, GAMMA, ISOMERS OF TRIALKYLADIPIC ACIDS.

Publications (2)

Publication Number Publication Date
NL7100724A true NL7100724A (en) 1971-05-25
NL143896B NL143896B (en) 1974-11-15

Family

ID=27436584

Family Applications (1)

Application Number Title Priority Date Filing Date
NL717100724A NL143896B (en) 1959-07-25 1971-01-19 PROCESS FOR THE PREPARATION OF THE ALFA, ALFA, GAMMA AND ALFA, GAMMA, GAMMA, ISOMERS OF TRIALKYLADIPIC ACIDS.

Country Status (1)

Country Link
NL (1) NL143896B (en)

Also Published As

Publication number Publication date
NL143896B (en) 1974-11-15

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Legal Events

Date Code Title Description
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: VEBA

V4 Lapsed because of reaching the maximum lifetime of a patent