PL9860B3 - The method of obtaining alkylisopropylphenols and their hydrogenation products. - Google Patents
The method of obtaining alkylisopropylphenols and their hydrogenation products. Download PDFInfo
- Publication number
- PL9860B3 PL9860B3 PL9860A PL986027A PL9860B3 PL 9860 B3 PL9860 B3 PL 9860B3 PL 9860 A PL9860 A PL 9860A PL 986027 A PL986027 A PL 986027A PL 9860 B3 PL9860 B3 PL 9860B3
- Authority
- PL
- Poland
- Prior art keywords
- alkylisopropylphenols
- hydrogenation products
- obtaining
- mixture
- phenols
- Prior art date
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- 238000005984 hydrogenation reaction Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 4
- 239000000203 mixture Substances 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 150000002989 phenols Chemical class 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000004821 distillation Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- MGSRCZKZVOBKFT-UHFFFAOYSA-N thymol Chemical compound CC(C)C1=CC=C(C)C=C1O MGSRCZKZVOBKFT-UHFFFAOYSA-N 0.000 description 2
- -1 unsaturated alkyl isopropylene phenols Chemical class 0.000 description 2
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 description 1
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000005844 Thymol Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229940041616 menthol Drugs 0.000 description 1
- 229960000790 thymol Drugs 0.000 description 1
Description
Najdluzszy czas trwania patentu do 17 wrzesnia 1943 r.Wedlug patentu glównego Nr 9359 nie¬ nasycone alkyloizopropylenofenole, jakie mozna wydzielic z pewnej ilosci kumara- nów i alkyloizopropylenofenoli w sposób wedlug patentu Nr 8919, daja sie przepro¬ wadzic w tymol i jego izomery, wzglednie w mentol i jego izomery, zapomoca ob¬ róbki wodorem, która prowadzi sie dopó¬ ty, dopóki nie zostana przylaczone 2 wzglednie 8 atomów wodoru.Obecnie wykryto, ze korzystniej jest i pod wzgledem gospodarczym bardziej wskazane rzeczone ilosci poddac uwodor¬ nianiu i mieszanine uwodorniona frakcjo¬ nowac.Korzysc tego sposobu polega na tern, ze zapomoca uwodorniania usuwa sie sklonnosc do polimeryzacji, jaka wykazu¬ ja nienasycone fenole, co daje sie odczuc przez zmniejszona wydajnosc. Mieszanina uwodorniona destyluje sie ilosciowo, nie dajac pozostalosci, podczas gdy przy de¬ stylacji mieszaniny w mysl wspomnianych patentów, zaleznie od szybkosci destylacji i temperatury, pozostaje wieksza lub mniej¬ sza ilosc polimeryzowanych fenoli.Przy uwodornianiu mieszaniny poste¬ puje sie tak samo, jak i w patencie glów¬ nym, stosujac np. katalizator niklowy. Po ukonczeniu przylaczenia wodoru (2 lub 8atomów wodoru) mieszanine uwodorniona frakcjonuje sie, najkorzystniej w prózni. PL PLThe longest term of the patent until September 17, 1943. According to the main patent No. 9359, unsaturated alkyl isopropylene phenols that can be separated from a certain amount of coumarates and alkyl isopropylene phenols in the manner according to patent No. 8919, can be converted into thymol and its isomers, into menthol and its isomers, by means of a treatment with hydrogen, which is carried out until 2 or 8 hydrogen atoms are attached. It has now been found that it is more advantageous and economically more desirable to hydrogenate the said amounts and hydrogenate the mixture The advantage of this method is that, by means of hydrogenation, the tendency to polymerize exhibited by unsaturated phenols is removed, which is felt by the reduced yield. The hydrogenated mixture is distilled quantitatively, leaving no residue, while in the distillation of the mixture according to the above-mentioned patents, depending on the rate of distillation and temperature, more or less polymerized phenols remain. In hydrogenating the mixture, the same procedure is used as and in the master patent, using, for example, a nickel catalyst. After the addition of the hydrogen (2 or 8 hydrogen atoms) is complete, the hydrogenated mixture is fractionated, most preferably under vacuum. PL PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL9860B3 true PL9860B3 (en) | 1929-02-28 |
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