Phenol → 4-Dodecylphenol

HRID 2049814Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2049814
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:8]=[CH:9][C:10]1[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1>>[CH2:6]([C:4]1[CH:5]=[CH:6][C:1]([OH:7])=[CH:2][CH:3]=1)[CH2:1][CH2:2][CH2:3][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:10][CH2:9][CH3:8].[C:10]1([CH:9]([C:3]2[C:2]([CH:9]([C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=3)[CH3:8])=[C:1]([OH:7])[CH:6]=[CH:5][CH:4]=2)[CH3:8])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1

Komponenten

4

Edukt 2

HCID 996Phenol2×HCID 7501Styrene2×

Produkt 2

HCID 660304-DodecylphenolAusbeute 5 %HCID 190103942,3-Bis(1-phenylethyl)phenolAusbeute 2 %

Versuchsvorschrift

A suspension of 188 parts of phenol, 125 parts of styrene and 5 parts of ion exchange resin is prepared in a stirred reactor at 80° C. and 1 bar pressure, the mixture being stirred at 700 rpm. The ion exchange resin is a sulfonated styrene/divinylbenzene copolymer resin, which has been dehydrated under reduced pressure for 20 hours at 100° C. before being used; it has a gel structure and its particle size is from 20 to 150 micrometers. The suspension is then stirred constantly in the reactor 700 rpm. After 3 hours, 24.4 parts of phenol and 16.2 parts of styrene are introduced per hour at 80° C. and 1 bar pressure and correspondingly 40.6 parts per hour of suspension are filtered through a suction line equipped with a metal filter (pore diameter 10 micrometers) and are subjected to fractional distillation. After 100 hours' operation, 2,840 parts (92% of theory, based on starting material II) of 4-(α-phenylethyl)-phenol of boiling point 136°-139° C./4 millibars are obtained, in addition to 155 parts (5% of theory, based on starting material II) of 2-(α-phenylethyl)-phenol and 47.2 parts (2% of theory, based on starting material II) of di-(α-phenylethyl)-phenol. The conversion is 59% of theory, based on phenol employed, or practically 100%, based on starting material II.

Aufarbeitung

  1. customis prepared in a stirred reactor at 80° C.
  2. stirringThe suspension is then stirred constantly in the reactor 700 rpm
  3. waitAfter 3 hours
  4. filtration1 bar pressure and correspondingly 40.6 parts per hour of suspension are filtered through a suction line
  5. customequipped with a metal
  6. filtrationfilter (pore diameter 10 micrometers)
  7. distillationare subjected to fractional distillation

Quellen und Nachweise

ORD-Eintrag
ord-3c1ae64daa654c54962ebfb83a5e3dd2
Quelldatensatz
uspto-grants-1980_04
Patentnummer
US04198531

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