WO2000020367A1 - Procede de preparation d'acide sorbique - Google Patents
Procede de preparation d'acide sorbique Download PDFInfo
- Publication number
- WO2000020367A1 WO2000020367A1 PCT/JP1999/005126 JP9905126W WO0020367A1 WO 2000020367 A1 WO2000020367 A1 WO 2000020367A1 JP 9905126 W JP9905126 W JP 9905126W WO 0020367 A1 WO0020367 A1 WO 0020367A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sorbic acid
- hot water
- treatment
- activated carbon
- temperature
- Prior art date
Links
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 239000004334 sorbic acid Substances 0.000 title claims abstract description 81
- 229940075582 sorbic acid Drugs 0.000 title claims abstract description 81
- 235000010199 sorbic acid Nutrition 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title abstract description 15
- 238000002360 preparation method Methods 0.000 title abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000011282 treatment Methods 0.000 claims abstract description 39
- 229920000728 polyester Polymers 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- MLUCVPSAIODCQM-NSCUHMNNSA-N crotonaldehyde Chemical compound C\C=C\C=O MLUCVPSAIODCQM-NSCUHMNNSA-N 0.000 claims abstract description 9
- MLUCVPSAIODCQM-UHFFFAOYSA-N crotonaldehyde Natural products CC=CC=O MLUCVPSAIODCQM-UHFFFAOYSA-N 0.000 claims abstract description 9
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000003809 water extraction Methods 0.000 claims description 11
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 21
- 239000012535 impurity Substances 0.000 abstract description 9
- 238000000354 decomposition reaction Methods 0.000 abstract description 8
- 239000006227 byproduct Substances 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 238000000746 purification Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 5
- 239000000706 filtrate Substances 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013373 food additive Nutrition 0.000 description 2
- 239000002778 food additive Substances 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- ADPRTAHDTJWPGT-UHFFFAOYSA-L zinc;2-methylpropanoate Chemical compound [Zn+2].CC(C)C([O-])=O.CC(C)C([O-])=O ADPRTAHDTJWPGT-UHFFFAOYSA-L 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002954 polymerization reaction product Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000009283 thermal hydrolysis Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
Definitions
- the present invention relates to a method for producing sorbic acid useful as a food additive or the like, and more particularly, to a method for producing sorbic acid by decomposing a polyester which is a polymerization reaction product of octatonaldehyde and ketene.
- the present invention relates to a method for producing high-purity sorbic acid by efficiently removing impurities such as by-product tar-like substances.
- Sorbic acid and its salts have antiseptic and antifungal effects and, at normal use concentrations, show little toxicity to the human body, and are therefore useful as food additives.
- the wet cake of crude sorbic acid obtained by decomposing the polyester is dissolved in hot water, and the tar-like substances that are insoluble in hot water are separated and removed.
- the method of removing is a simple and preferable method for removing a large amount of tar-like substances without using a special solvent.
- the solubility of sorbic acid in water is at most about 3% even in hot water near 100 ° C, and it is necessary to increase the size of the equipment itself in order to treat large amounts of crude sorbic acid.
- an object of the present invention is to provide a method for efficiently removing impurities such as tar-like substances by-produced by the decomposition of polyester by simple means and producing sorbic acid of high purity with high productivity. It is in.
- the present inventors have conducted intensive studies in order to achieve the above object, and as a result, utilizing the fact that the solubility of sorbic acid sharply increases when the temperature of hot water exceeds 100 ° C.
- the present inventors have found that tar-like substances can be efficiently removed by extraction with hot water at a temperature of more than 100 ° C or activated carbon treatment in hot water at a temperature of more than 100 ° C, and have completed the present invention. .
- the present invention provides a reaction product of crotonaldehyde and ketene.
- Crude sorbic acid obtained by decomposing the formed polyester is 10 o.
- the temperature of the hot water is, for example, 120 ° C. or less.
- the amount of sorbic acid to be treated is, for example, equal to or less than the amount of sorbic acid dissolved in hot water at the treatment temperature.
- polyester is decomposed to produce sorbic acid.
- the polyester is obtained by polymerizing crotonaldehyde and ketene. More specifically, ketene is added to crotonaldehyde in the presence of a catalyst such as, for example, zinc acetate, zinc isobutyrate, ⁇ ; —picolin at a temperature of, for example, about 20 to 100 ° C. Synthesize polyester by blowing.
- the polyester to be subjected to the decomposition reaction may be decomposed by either acid or hydrolysis by acid or thermal decomposition.
- hydrolytic decomposition using a mineral acid, particularly hydrochloric acid is preferred.
- the reaction temperature for hydrolyzing the polyester is, for example, about 10 to 110 ° C.
- the concentration of hydrochloric acid when the polyester is hydrolyzed with hydrochloric acid is, for example, about 15 to 40% by weight, and preferably 23 to 36% by weight. /. It is about.
- the reaction mixture obtained by decomposing the polyester contains sorbic acid, the catalyst used in the reaction, and impurities such as tar-like substances by-produced in the reaction. Requires a purification step.
- An important feature of the present invention is that the sol At least one selected from (A) a hot water extraction process in which sorbic acid is extracted with hot water by adding boric acid to hot water exceeding 100 ° C, and (B) an activated carbon treatment in hot water. There are two processes. These treatments are usually performed under pressure to increase the treatment temperature to more than 100 ° C.
- the hot water extraction treatment (A) the crude sorbic acid and hot water are thoroughly mixed by stirring or the like, and then allowed to stand still to remove an aqueous layer containing sorbic acid and by-product tar-like substances insoluble in hot water. By separating the liquid into an organic layer containing sorbic acid, sorbic acid and impurities such as tar-like substances can be separated.
- the activated carbon treatment (B) impurities such as tar-like substances dissolved in hot water are adsorbed on the activated carbon, and the activated carbon is filtered off, whereby sorbic acid with high purity can be obtained.
- the treatments (A) and (B) can be performed at any point in the sorbic acid purification step after the polyester decomposition reaction step.
- the reaction mixture when a polyester is hydrolyzed in the presence of an acid, the reaction mixture is usually in the form of a slurry in which sorbic acid is dispersed in water. Therefore, the slurry-like reaction mixture is subjected to suction filtration and pressurization.
- the crude sorbic acid wet cake obtained by subjecting to solid-liquid separation such as filtration and the like is added to hot water to perform the above treatment.
- the crude sorbic acid wet cake contains a tar-like substance, and usually has a brownish brown to blackish brown color.
- the melting point of sorbic acid is generally said to be 134.5 ° C, but in the coexistence of water, it has dropped to a temperature slightly lower than 120 ° C, and the temperature exceeds 120 ° C It is thought that the excess sorbic acid that could not be completely dissolved in the aqueous layer would liquefy and separate from water. Therefore, in the hot water extraction treatment (A), sorbic acid migrates to the organic layer and is easily lost. In addition, in the activated carbon treatment (B), the liquefied sorbic acid itself dissolves the tar-like substance as a solvent, making removal by activated carbon difficult, and when cooled, the tar-like substance is incorporated into the crystal. It is easy to cause hue deterioration.
- the upper limit of the temperature of the hot water it is preferable to set the upper limit of the temperature of the hot water to 120 ° C, and to reduce the throughput of sorbic acid. It is desirable that the amount of sorbic acid at the treatment temperature be equal to or less than the saturated solubility in hot water.
- the activated carbon used in the activated carbon treatment (B) is not particularly limited. Activated carbon derived from plants such as wood, sawdust, and coconut shells, activated carbon derived from minerals such as peat, lignite, and lignite, phenolic resin, etc. Activated carbon etc. can be used.
- the specific surface area of activated carbon for example, 2 0 0 ⁇ 3 5 0 0 m 2 Z g, preferably 4 0 0 ⁇ 2 0 0 0 m 2 / g, further preferred properly is 1 0 0 0 ⁇ 2 0 0 0 m It is about 2 / g.
- the total pore volume of the activated carbon is, for example, 0.1 to 2 ml / g, preferably 0.2 to: 1.6 ml / g, and more preferably 0.8 to 1.6 ml / g. It is about.
- the amount of activated carbon used can be appropriately selected within a range that does not impair the purification efficiency and the like. Generally, 100 parts by weight of sorbic acid subjected to the activated carbon treatment is
- the treatment time with activated carbon is, for example, about 10 minutes to 5 hours, preferably 1 minute.
- the activated carbon is separated by filtration, and the filtrate is cooled to precipitate sorbic acid, and then filtered and dried to obtain purified sorbic acid.
- Either the hot water extraction treatment (A) or the activated carbon treatment (B) may be performed, or both treatments may be performed.
- the amount of the tar-like substance is small, sorbic acid having excellent hue can be obtained only by the activated carbon treatment (B).
- both the hot water extraction treatment (A) and the activated carbon treatment (B) are performed, it is sufficient to use hot water exceeding 100 ° C in at least one of the treatments. It is preferred to use more than hot water.
- the hot water extraction treatment (A) and the activated carbon treatment (B) may be performed stepwise, or may be performed in one step.
- crotonaldehyde To 600 parts of crotonaldehyde, 2 parts of zinc isobutyrate was added as a catalyst, and at 30 to 40 ° C., 170 parts of ketene gas was introduced to cause a reaction. After completion of the reaction, excess crotonaldehyde was distilled off under reduced pressure to obtain a high-viscosity polyester.
- Example 1 A similar operation was performed in Example 1 except that the temperature of the reaction vessel during the activated carbon treatment was raised to 100 ° C, and pure sorbic acid in the crude sorbic acid wet cake initially charged in water was obtained. The yield of purified sorbic acid recovered per minute was 60.5%.
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)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK99943429T DK1065195T3 (da) | 1998-10-05 | 1999-09-21 | Fremgangsmåde til fremstilling af renset sorbinsyre |
US09/555,294 US6462233B1 (en) | 1998-10-05 | 1999-09-21 | Process for the preparation of sorbic acid |
DE69917240T DE69917240T2 (de) | 1998-10-05 | 1999-09-21 | Verfahren zur Herstellung von gereinigter Sorbinsäure |
EP99943429A EP1065195B1 (en) | 1998-10-05 | 1999-09-21 | process for the preparation of purified sorbic acid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10282250A JP3001097B1 (ja) | 1998-10-05 | 1998-10-05 | ソルビン酸の製造法 |
JP10/282250 | 1998-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000020367A1 true WO2000020367A1 (fr) | 2000-04-13 |
Family
ID=17650010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/005126 WO2000020367A1 (fr) | 1998-10-05 | 1999-09-21 | Procede de preparation d'acide sorbique |
Country Status (7)
Country | Link |
---|---|
US (1) | US6462233B1 (ja) |
EP (1) | EP1065195B1 (ja) |
JP (1) | JP3001097B1 (ja) |
CN (1) | CN1221507C (ja) |
DE (1) | DE69917240T2 (ja) |
DK (1) | DK1065195T3 (ja) |
WO (1) | WO2000020367A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110642698A (zh) * | 2019-10-31 | 2020-01-03 | 江苏润普食品科技股份有限公司 | 山梨酸聚酯酸解制备山梨酸的生产方法 |
CN114478238A (zh) * | 2021-12-29 | 2022-05-13 | 南通醋酸化工股份有限公司 | 一种山梨酸水解液连续萃取提纯的方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4426646B1 (ja) * | 1966-07-27 | 1969-11-07 | ||
JPS54103821A (en) * | 1978-01-17 | 1979-08-15 | Nippon Synthetic Chem Ind Co Ltd:The | Method of recovering sorbic acid from its dilute solution |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7008878A (ja) * | 1969-06-20 | 1970-12-22 | ||
DE2331668C2 (de) | 1973-06-22 | 1982-07-29 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Reinigung von Sorbinsäure |
-
1998
- 1998-10-05 JP JP10282250A patent/JP3001097B1/ja not_active Expired - Lifetime
-
1999
- 1999-09-21 CN CN99801635.7A patent/CN1221507C/zh not_active Expired - Fee Related
- 1999-09-21 WO PCT/JP1999/005126 patent/WO2000020367A1/ja active IP Right Grant
- 1999-09-21 US US09/555,294 patent/US6462233B1/en not_active Expired - Fee Related
- 1999-09-21 EP EP99943429A patent/EP1065195B1/en not_active Expired - Lifetime
- 1999-09-21 DK DK99943429T patent/DK1065195T3/da active
- 1999-09-21 DE DE69917240T patent/DE69917240T2/de not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4426646B1 (ja) * | 1966-07-27 | 1969-11-07 | ||
JPS54103821A (en) * | 1978-01-17 | 1979-08-15 | Nippon Synthetic Chem Ind Co Ltd:The | Method of recovering sorbic acid from its dilute solution |
Non-Patent Citations (1)
Title |
---|
See also references of EP1065195A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1221507C (zh) | 2005-10-05 |
EP1065195A4 (en) | 2001-04-04 |
EP1065195A1 (en) | 2001-01-03 |
DE69917240T2 (de) | 2004-09-09 |
DK1065195T3 (da) | 2004-07-26 |
JP3001097B1 (ja) | 2000-01-17 |
US6462233B1 (en) | 2002-10-08 |
CN1286676A (zh) | 2001-03-07 |
DE69917240D1 (de) | 2004-06-17 |
JP2000109446A (ja) | 2000-04-18 |
EP1065195B1 (en) | 2004-05-12 |
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