CN103301952A - 6-aliphatic hydrocarbon amido hexyl hydroximic acid collecting agent and preparation and application methods thereof - Google Patents
6-aliphatic hydrocarbon amido hexyl hydroximic acid collecting agent and preparation and application methods thereof Download PDFInfo
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Abstract
A structural formula of a 6-aliphatic hydrocarbon amido hexyl hydroximic acid collecting agent is represented by a formula (I), wherein R represents C2-C18 aliphatic hydrocarbon group. The preparation method comprises the steps as follows: caprolactam and hydroxylamine hydrochloride or hydroxylamine sulphate are taken as raw materials, methylbenzene is taken as a solvent, the reaction temperature ranges from 80 DEG C to 110 DEG C, the reaction lasts for 1-4 hours, and 6-amino hexyl hydroximic acid is generated; 6-amino hexyl hydroximic acid reacts with C2-C18 fat carboxylic acid at the reaction temperature ranging from 100 DEG C to 160 DEG C for 1-4 hours to generate 6-aliphatic hydrocarbon amido hexyl hydroximic acid, and the product yield can be higher than 91%; and 6-aliphatic hydrocarbon amido hexyl hydroximic acid used in flotation of scheelite, wolframite, tombarthite ore, tin ore, bauxite, titanic iron ore or fluorite ore is taken as the collecting agent, so that the flotation recovery rate can be increased by 3%-10%.
Description
Technical field
The present invention relates to 6-aliphatic group amide groups hexyl hydroximic acid and in scheelite, wolframite, Rare Earth Mine, tin ore, bauxite, ilmenite or fluorite flotation, be used as method and the preparation method of collecting agent.
Background technology
Hydroximic acid and salt thereof are the known flotation collectors for the oxide mineral froth flotation method, be usually used in the flotation of metal or mineral, such as fluorite, huebnerite, wolframite, cassiterite, muscovite, phosphorite, bloodstone, pyrolusite, rhodonite, chrysocolla, malachite, barite, calcite and rare earth.Hydroximic acid is usually more powerful and more selective than conventional aliphatic acid, aliphatic amine, petroleum sulfonate and alkyl sulfate.
At present, the hydroximic acid collecting agent for mineral floating mainly contains fatty hydroximic acid collecting agent and benzene first hydroximic acid collecting agent.Patent CN101816980A discloses a kind of C
5～9The alkyl hydroximic acid (see structural formula a), this kind hydroximic acid and Fatty acids composition are as the flotation collector of Rare Earth Mine.Patent CN1533305A discloses C
6～14The aliphatic hydroximic acid.Patent CN1303444A discloses C
6～22The mixture of aliphatic hydroximic acid and oleic acid is made flotation collector, is used for froth flotation method and removes impurity from the mineral ore deposit.Patent CN101519365A discloses a kind of improvement production method (seeing structural formula b) of Using Salicyl Hydroximic Acid.Patent CN102584629A discloses a kind of preparation method of propylene hydroximic acid.Gao Yude etc. have reported that the research of benzene first hydroximic acid collecting floatation of tungsten mineral solution (sees structural formula c, Gao Yude etc., non-ferrous metal (ore dressing part), 2003 (4): 28-31.).Patent CN102302983A discloses quaternary ammonium salt hydroximic acid flotation collector and preparation method's (seeing structural formula d), and the quaternary ammonium salt hydroximic acid is strong to calcium, magnesium sequestering power.Use alkyl hydroximic acid and benzene first hydroximic acid compound can improve the rate of recovery of noble metal as collecting agent, but the group of above-mentioned hydroximic acid collecting metal ion is only from hydroximic acid functional group, and along with the carbon chain growth of hydroximic acid, water-soluble variation has affected the flotation performance of collecting agent.At present, the hydroximic acid of realization commercial Application is mainly octyl group hydroximic acid, C
7～9The hydroximic acid of the short hydrocarbon chain structures such as alkyl hydroximic acid, benzene first hydroximic acid, Using Salicyl Hydroximic Acid, it is selectively good, but a little less than the collecting ability, has limited collecting agent flotation performance and application.Above-mentioned collecting agent generally adopts the method preparations such as azanol-carboxylate method, azanol-chloride method, and the hydroximic acid product needed is separated through persalt or sulfuric acid acidation, and the organic acidity waste water that produces has not only caused product loss, has also brought serious problem of environmental pollution.
At present; relevant molecule contains the hydroximic acid research of substituted amido; only limit to this compounds and have the biologically active of inhibition of histone deacetylase, and this inhibition activity being a kind of mode of effective treatment cancer, also is to study now comparatively widely class I histone deacetylase (HDAC) inhibitor (to see structural formula e; Andrianov V; Gailite V, Lola D, Loza E; et al.Europ.Med.Chem.2009,44:1067-1085).The preparation method that the molecule of Andrianov V report contains the hydroximic acid of hydrocarbon amide groups is: the acyl chlorides and the H that contain phenyl ring
2N (CH)
nCOOMe(n=4～7) reaction after the intermediate piptonychia ester hydroxyl oximate of generation, namely gets product (structural formula e).The shortcoming of this method is: the toxicity of acyl chlorides is large, easily hydrolysis, and the hydroxyl oximation reaction needs to react under the condition of heating and highly basic, easily causes the fracture of amido link in the molecule, and product yield is lower.
Summary of the invention
The objective of the invention is defective for existing collecting agent and synthetic method and proposed 6-aliphatic group amide groups hexyl hydroximic acid as collectors application in scheelite, wolframite, Rare Earth Mine, tin ore, bauxite, ilmenite or fluorite flotation, and proposed 6-aliphatic group amide groups hexyl hydroximic acid of a kind of efficient, environmental protection and preparation method thereof.At present, 6-aliphatic group amide groups hexyl hydroximic acid has no report as flotation collector in flotation, also do not see the defined 6-aliphatic group of the present invention amide groups hexyl hydroximic acid and synthetic method thereof.
A kind of 6-aliphatic group amide groups hexyl hydroximic acid is specifically suc as formula shown in (I) structure.
Wherein R represents the aliphatic group of C2～C18.
The application process of described 6-aliphatic group amide groups hexyl hydroximic acid is with the 6-aliphatic group amide groups hexyl hydroximic acid of structure shown in the formula (I) collecting agent as scheelite, wolframite, Rare Earth Mine, tin ore, bauxite, ilmenite or fluorite flotation.
The basic operation procedure that 6-aliphatic group amide groups hexyl hydroximic acid is made collecting agent is: (a) enter flotation behind the grinde ore; (b) 6-aliphatic group amide groups hexyl hydroximic acid and NaOH, potassium hydroxide or ammoniacal liquor are made into the aqueous solution of 6-aliphatic group amide groups hexyl hydroximic acid salt as floating agent in water; (c) adding floating agent in ore grinding and/or floatation process sizes mixing, ilmenite is regulated pH4～7 with sulfuric acid, other is mining, and sodium carbonate is regulated pH7～12 scopes, at least the aqueous solution that contains 6-aliphatic group amide groups hexyl hydroximic acid salt in the medicament that adds, the amount ranges 40～1500g/t of 6-aliphatic group amide groups hexyl hydroximic acid; (d) by froth flotation method emersion useful metal mineral.
The preparation method of described 6-aliphatic group amide groups hexyl hydroximic acid, may further comprise the steps: (1) is take caprolactam and hydroxylamine hydrochloride or HAS as raw material, the amide groups of two kinds of raw materials: azanol base mol ratio=1:1, toluene is solvent, 80～110 ℃ of reaction temperatures, reacted 1～4 hour, and generated the amino hexyl hydroximic acid suc as formula the 6-of structure shown in (II); (2) the amino hexyl hydroximic acid of 6-and C
2～C
18The aliphatic carboxylic acid reaction, the amino of two kinds of reactants: carboxyl mol ratio=1:1～1.3, reaction temperature are 100～160 ℃, react 1～4 hour, generate the 6-aliphatic group amide groups hexyl hydroximic acid with structure shown in the formula (I).
Described C
2～C
18Aliphatic carboxylic acid comprises C
2～C
18Alkyl carboxylic acid and contain in the unsaturated alkyl carboxylic acid of alkenyl or alkynyl one or more.Preferably include one or more in acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, sad, isooctyl acid, capric acid, oleic acid, linoleic acid, leukotrienes, octenoic acid, decylenic acid, lauroleic acid, laurate, the cyclohexanecarboxylic acid, or a kind of in the cocinic acid, palmitoleic acid, aphthenic acids.
Described C
2～C
18Aliphatic carboxylic acid preferably includes one or more in caproic acid, sad, isooctyl acid, capric acid, oleic acid, linoleic acid, leukotrienes, octenoic acid, decylenic acid, lauroleic acid, laurate, the cyclohexanecarboxylic acid, or a kind of in the cocinic acid, palmitoleic acid, aphthenic acids.
Solvent load is 2～5 times of quality of caprolactam in the said method, and the solvent distillation was recycling after reaction finished.
When carrying out the hydroxyl oximate with hydroxylamine hydrochloride, the hydrochloric acid that produces in the course of reaction passes in the aqueous solution or the sodium hydrate aqueous solution and absorbs, and reacts in the complete rear adding sodium carbonate with complete; When carrying out the hydroxyl oximate with HAS, react the sulfuric acid that complete rear adding sodium carbonate neutralization reaction produces.
6-aliphatic group amide groups hexyl hydroximic acid collecting agent used in the present invention, the mineral such as scheelite, wolframite, Rare Earth Mine, tin ore, bauxite, ilmenite or fluorite ore are had strong collecting ability, can improve the flotation recovery rate of scheelite, wolframite, Rare Earth Mine, tin ore, bauxite, ilmenite or fluorite mineral.Adopt 6-aliphatic group amide groups hexyl hydroximic acid compound of the present invention to unite use as flotation collector or with other collecting agents such as oleic acid separately, 6-aliphatic group amide groups hexyl hydroximic acid consumption 40～1500g/t, adding floating agent in ore grinding and/or floatation process sizes mixing, ilmenite is regulated pH4～7 with sulfuric acid, remaining oxide ore is regulated pH7～12 with sodium carbonate, compare with benzene first hydroximic acid, the flotation recovery rate of oxide ore is improved, realize the high FLOTATION SEPARATION of valuable mineral and gangue mineral, improve 3～10 percentage points of flotation recovery rates.
The advantage of 6-aliphatic group amide groups hexyl hydroximic acid collecting agent of the present invention is:
(1) 6-aliphatic group amide groups hexyl hydroximic acid molecule has hydroxyl oximido and two close mineral groups of amide groups, and is stronger with the chelation ability of metallic element, selective better to the target mineral.
(2) by suitably increasing the length of hydrophobic group 6-aliphatic group carbochain, can improve the hydrophobic foamability of collecting agent, improve froth flotation efficient.
(3) amide groups of 6-aliphatic group amide groups hexyl hydroximic acid is hydrophilic group, collecting agent still can keep certain water-soluble when suitably increasing hydrophobic group length, overcome the long then indissoluble solution of common hydroximic acid hydrophobic group, the weak shortcoming of the short then collecting ability of hydrophobic group, realized the flotation applications of long carbochain hydroximic acid.
The preparation method's of 6-aliphatic group amide groups hexyl hydroximic acid of the present invention advantage is:
(1) the hydroxyl oximation reaction need to not carry out under the highly basic condition, has avoided causing under heating and the highly basic condition problem of amide groups fracture, prepares the amide groups hydroximic acid collecting agent that conventional method is difficult to synthesize;
(2) preparation process is easy, efficient, and product purity can reach more than 89%, and yield can reach more than 91%;
(3) reaction dissolvent can be reused, and does not need acidifying after the reaction, non-wastewater discharge, production process environmental protection.
Description of drawings
Fig. 1 is the mass spectrogram of the positive caprinoyl amido of 6-hexyl hydroximic acid;
Fig. 2 is the mass spectrogram of the positive decoyl amido of 6-hexyl hydroximic acid;
Fig. 3 is the mass spectrogram of 6-valnoctamide base hexyl hydroximic acid;
Fig. 4 is the mass spectrogram of 6-hexadecanoyl amido hexyl hydroximic acid;
Fig. 5 is the H-NMR figure of the positive caprinoyl amido of 6-hexyl hydroximic acid;
Fig. 6 is the H-NMR figure of the positive decoyl amido of 6-hexyl hydroximic acid;
Fig. 7 is the H-NMR figure of 6-valnoctamide base hexyl hydroximic acid;
Fig. 8 is the infrared spectrum of the positive caprinoyl amido of 6-hexyl hydroximic acid;
Fig. 9 is the infrared spectrum of the positive decoyl amido of 6-hexyl hydroximic acid;
Figure 10 is the infrared spectrum of 6-(9-octadecylene) amide groups hexyl hydroximic acid;
Figure 11 is the infrared spectrum of 6-dodecanoyl amido hexyl hydroximic acid;
Figure 12 is the infrared spectrum of 6-hexadecanoyl amido hexyl hydroximic acid;
The specific embodiment
The present invention is further specified by the following example, but is not subjected to the restriction of these embodiment.All umbers and percentage all refer to quality except as otherwise herein provided among the embodiment.
The preparation of the positive caprinoyl amido of embodiment 1:6-hexyl hydroximic acid
Be that 99% caprolactam and 6.95 parts of purity are that 99% hydroxylamine hydrochloride adds in the reactor with 11.32 parts of purity, add 34.64 parts of toluene and make solvent, under agitation be heated to 105 ℃, react after 3 hours the distilling off solvent recovery; And then 17.26 parts of n-capric acids are added in the above-mentioned reactor, under agitation be heated to 120 ℃, reacted 1～4 hour, obtain the positive caprinoyl amido of needed 6-hexyl hydroximic acid product.The analysis showed that the positive caprinoyl amido of 6-hexyl hydroximic acid purity is 90.3%, yield is 92.4%.Product Mr:300.24 is through Mass Spectrometer Method MS:286.15[M-15] (see figure 1), for falling the peak of methyl.Nuclear magnetic resonance spectroscopy and infrared spectrum analysis collection of illustrative plates are seen respectively Fig. 5 and Fig. 8, and data see Table 1 and table 2.
The preparation of the positive decoyl amido of embodiment 2:6-hexyl hydroximic acid
Change 17.26 parts of n-capric acids among the embodiment 1 into 14.42 parts of caprylic acids, other condition is constant, and the purity of the positive decoyl amido of the 6-that obtains hexyl hydroximic acid is 91.4%, and yield is 93.2%.Product Mr:272.21 is through Mass Spectrometer Method MS:258.10[M-15] (seeing Fig. 2), for falling the peak of methyl.Nuclear magnetic resonance spectroscopy and infrared spectrum analysis collection of illustrative plates are seen respectively Fig. 6 and Fig. 9, and data see Table 1 and table 2.
The preparation of embodiment 3:6-valnoctamide base hexyl hydroximic acid
Change 17.26 parts of n-capric acids among the embodiment 1 into 14.42 parts of isooctyl acids, other condition is constant, and the purity of the 6-valnoctamide base hexyl hydroximic acid that obtains is 89.4%, and yield is 91.2%.Product Mr:272.21 is through Mass Spectrometer Method MS:244.15[M-29] (seeing Fig. 3), for falling the peak of side chain ethyl; 258.05[M-15], for falling the peak of methyl.The nuclear magnetic resonance spectroscopy collection of illustrative plates is seen Fig. 7, and data see Table 2.
The preparation of embodiment 4:6-(9-vaccenic acid) amide groups hexyl hydroximic acid
Change 17.26 parts of n-capric acids among the embodiment 1 into 28.25 parts of 9-octadecenoic acids, other condition is constant, and the purity of the 9-vaccenic acid hexyl hydroximic acid that obtains is 90.7%, and yield is 92.1%.The infrared spectrum analysis collection of illustrative plates is seen Figure 10, and data see Table 1.
The preparation of embodiment 5:6-dodecanoyl amido hexyl hydroximic acid
Change 17.26 parts of n-capric acids among the embodiment 1 into 20.03 parts of dodecylic acids, other condition is constant, and the purity of the 6-dodecanoyl amido hexyl hydroximic acid that obtains is 90.4%, and yield is 92.8%.The infrared spectrum analysis collection of illustrative plates is seen Figure 11, and data see Table 1.
The preparation of embodiment 6:6-hexadecanoyl amido hexyl hydroximic acid
Change 17.26 parts of n-capric acids among the embodiment 1 into 25.64 parts of hexadecanoic acids, other condition is constant, and the purity of the 6-hexadecanoyl amido hexyl hydroximic acid that obtains is 91.4%, and yield is 93.3%.Product Mr:384.21 is through Mass Spectrometer Method MS:384.25 (seeing Fig. 4).The infrared spectrum analysis collection of illustrative plates is seen Figure 12, and data see Table 1.
Five kinds of 6-aliphatic groups of table 1 amide groups infrared parsing summary table of hexyl hydroximic acid (seeing Fig. 8～12)
Three kinds of 6-aliphatic groups of table 2 amide groups hexyl hydroximic acid hydrogen spectrum nuclear-magnetism is resolved summary table (seeing Fig. 5～7)
" the 6-aliphatic group amide groups hexyl hydroximic acid " mentioned among the embodiment that below uses all is that 6-aliphatic group amide groups hexyl hydroximic acid and NaOH, potassium hydroxide or ammoniacal liquor are made into the floating agent that the aqueous solution of 6-aliphatic group amide groups hexyl hydroximic acid salt is used as in water.
The application of the positive caprinoyl amido of embodiment 7:6-hexyl hydroximic acid in the tungsten ore flotation
Certain selects the sulphur mine tailing to contain WO
30.24%, mog-200 order accounts for 85%, adopts the sodium carbonate adjust pH of 3000g/t, and the waterglass of 2500g/t is dispersant, through the one roughing operation, obtains the tungsten rough concentrate, and the flotation results of the positive caprinoyl amido of 6-hexyl hydroximic acid and benzene first hydroximic acid is seen Table 3.The result shows, the positive caprinoyl amido of 6-hexyl hydroximic acid and oxidized paraffin wax soap 731 are used in combination, and compare tungsten concentrate WO with benzene first hydroximic acid
3The rate of recovery has improved 8.86 percentage points.
Table 3 tungsten ore flotation conditions and result thereof
The application of the positive decoyl amido of embodiment 8:6-hexyl hydroximic acid in the ilmenite flotation
Certain ferrotianium contains ore deposit TiO
222.60%, mog-200 order accounts for 60%, adopts the sulfuric acid adjust pH of 1500g/t, through the one roughing operation, obtains the titanium rough concentrate, and the flotation results of the positive decoyl amido of 6-hexyl hydroximic acid and benzene first hydroximic acid sees Table 4.The result shows, compares with benzene first hydroximic acid, and the positive decoyl amido of 6-hexyl hydroximic acid can make ilmenite concentrate TiO
2The rate of recovery improves 5.70 percentage points.
Table 4 titanium iron ore flotation conditions and result thereof
The application of embodiment 9:6-valnoctamide base hexyl hydroximic acid in bauxite flotation
Certain bauxite contains Al
2O
362.01%, SiO
210.98%, mog-200 order accounts for 85%, adopts the sodium carbonate adjust pH of 3000g/t, and the calgon of 30g/t through the one roughing operation, obtains the aluminium rough concentrate, and the flotation results of 6-valnoctamide base hexyl hydroximic acid and oleic acid sees Table 5.The result shows, 6-valnoctamide base hexyl hydroximic acid and oleic acid are used in combination, and compare bauxite concentrate Al with benzene first hydroximic acid
2O
3The rate of recovery has improved 6.05 percentage points, and alumina silica ratio A/S has improved 0.42.
Table 5 bauxitic ore flotation conditions and result thereof
The application of embodiment 10:6-(9-octadecylene) amide groups hexyl hydroximic acid in the Rare Earth Mine flotation
Certain shaking table rare earth chats REO grade 8.04% adopts waterglass 1000g/t to make inhibitor, and terpenic oil 80g/t through the one roughing operation, obtains the rare earth rough concentrate.The flotation results of 6-(9-octadecylene) amide groups hexyl hydroximic acid and benzene first hydroximic acid sees Table 6, and the result shows, compares with benzene first hydroximic acid, and the rare earth yield of 6-(9-octadecylene) amide groups hexyl hydroximic acid flotation has improved 7.00 percentage points.
Table 6 rare earth ore flotation conditions and result thereof
The application of embodiment 11:6-n-dodecane amide groups hexyl hydroximic acid in the cassiterite ore floatation
Certain cassiterite raw ore contains Sn1.11%, adopts sodium carbonate 500g/t, inhibitor tannin consumption 500g/t, and terpenic oil 24g/t through the one roughing operation, obtains the cassiterite rough concentrate.The flotation results of 6-n-dodecane amide groups hexyl hydroximic acid and benzene first hydroximic acid sees Table 7, and the result shows, compares with benzene first hydroximic acid, and the tin rate of recovery of 6-n-dodecane amide groups hexyl hydroximic acid flotation has improved 5.89 percentage points.
Table 7 cassiterite ore floatation condition and result thereof
The application of embodiment 12:6-hexadecanoyl amido hexyl hydroximic acid in fluorite flotation
Certain fluorite raw ore contains CaF
239.20%, adopt sodium carbonate 1400g/t, inhibitor waterglass consumption 400g/t, the hybrid collector of oleic acid and hydroximic acid through the one roughing operation, obtains the fluorite rough concentrate.The flotation results of 6-hexadecanoyl amido hexyl hydroximic acid and benzene first hydroximic acid sees Table 8, and the result shows, compares the CaF of 6-hexadecanoyl amido hexyl hydroximic acid flotation with benzene first hydroximic acid
2The rate of recovery has improved 4.29 percentage points.
Table 8 fluorite ore flotation conditions and result thereof
Claims (8)
1. a 6-aliphatic group amide groups hexyl hydroximic acid is characterized in that, specifically suc as formula shown in (I) structure:
Wherein R represents C
2～C
18Aliphatic group.
2. the application process of 6-aliphatic group amide groups hexyl hydroximic acid claimed in claim 1, it is characterized in that, with the 6-aliphatic group amide groups hexyl hydroximic acid of structure shown in the formula (I) collecting agent as scheelite, wolframite, Rare Earth Mine, tin ore, bauxite, ilmenite or fluorite flotation.
3. application process according to claim 2 is characterized in that, the basic operation procedure that 6-aliphatic group amide groups hexyl hydroximic acid is made collecting agent is: (a) enter flotation behind the grinde ore; (b) 6-aliphatic group amide groups hexyl hydroximic acid and NaOH, potassium hydroxide or ammoniacal liquor are made into the aqueous solution of 6-aliphatic group amide groups hexyl hydroximic acid salt as floating agent in water; (c) adding floating agent in ore grinding and/or floatation process sizes mixing, ilmenite is regulated pH4～7 with sulfuric acid, other is mining, and sodium carbonate is regulated pH7～12 scopes, at least the aqueous solution that contains 6-aliphatic group amide groups hexyl hydroximic acid salt in the medicament that adds, the amount ranges 40～1500g/t of 6-aliphatic group amide groups hexyl hydroximic acid; (d) by froth flotation method emersion useful metal mineral.
4. the preparation method of 6-aliphatic group amide groups hexyl hydroximic acid claimed in claim 1, it is characterized in that, may further comprise the steps: (1) is take caprolactam and hydroxylamine hydrochloride or HAS as raw material, the amide groups of two kinds of raw materials: azanol base mol ratio=1:1, toluene is solvent, 80～110 ℃ of reaction temperatures were reacted 1～4 hour, generated the amino hexyl hydroximic acid suc as formula the 6-of structure shown in (II); (2) the amino hexyl hydroximic acid of 6-and C
2～C
18The aliphatic carboxylic acid reaction, the amino of two kinds of reactants: carboxyl mol ratio=1:1～1.3, reaction temperature are 100～160 ℃, react 1～4 hour, generate the 6-aliphatic group amide groups hexyl hydroximic acid with structure shown in the formula (I).
5. preparation method according to claim 4 is characterized in that: described C
2～C
18Aliphatic carboxylic acid comprises C
2～C
18Alkyl carboxylic acid and contain in the unsaturated alkyl carboxylic acid of alkenyl or alkynyl one or more.
6. it is characterized in that: described C according to claim 4 or 5 described preparation methods,
2～C
18Aliphatic carboxylic acid comprises one or more in acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, sad, isooctyl acid, capric acid, oleic acid, linoleic acid, leukotrienes, octenoic acid, decylenic acid, lauroleic acid, laurate, the cyclohexanecarboxylic acid, or a kind of in the cocinic acid, palmitoleic acid, aphthenic acids.
7. preparation method according to claim 6 is characterized in that: described C
2～C
18Aliphatic carboxylic acid comprises one or more in caproic acid, sad, isooctyl acid, capric acid, oleic acid, linoleic acid, leukotrienes, octenoic acid, decylenic acid, lauroleic acid, laurate, the cyclohexanecarboxylic acid, or a kind of in the cocinic acid, palmitoleic acid, aphthenic acids.
8. preparation method according to claim 4, it is characterized in that: solvent load is 2～5 times of quality of caprolactam, the solvent distillation was recycling after reaction finished.
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