CN1180693A - White, powder, non-hygroscopic fatty acyl lactate and its preparing method - Google Patents
White, powder, non-hygroscopic fatty acyl lactate and its preparing method Download PDFInfo
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- CN1180693A CN1180693A CN 97118771 CN97118771A CN1180693A CN 1180693 A CN1180693 A CN 1180693A CN 97118771 CN97118771 CN 97118771 CN 97118771 A CN97118771 A CN 97118771A CN 1180693 A CN1180693 A CN 1180693A
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- esterification
- fatty acyl
- lactic acid
- earth metal
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Abstract
A powdered non-hydroscopic white lactate of fatty acid, which can be used as emulsifier, flour processing agent, nutrition intensifier, stabilizer and thickening agent, is prepared through esterification reaction between fatty acid, hardening oil and lactic acid under the existance of catalyst and protecting atmosphere, the reaction of esterified product with alkali-metal or alkali-earth metal compound, and pulverization.
Description
The present invention relates to an off-white color, powdery, non-hygroscopic fatty acyl lactate and preparation method thereof, preparation method of the present invention relates to lipid acid, winterized stearin, lactic acid, alkali metal compound, alkaline earth metal compound or above substance mixture and comes the synthetic fat acyl lactate.Product is the powder (60-200 order) of white, non-hygroscopic.Product can be used for foodstuffs industry, day chemical industry and farming industry as additive, the invention belongs to field of fine chemical.
The existing report of the method for synthetic fat acyl lactate.Chinese patent CN85108098 discloses the oxide compound, oxyhydroxide or the carbonate that use lipid acid, lactic acid to heat to carry out after the esterification basic metal or alkaline-earth metal again and has neutralized in inert gas, finally obtain brown viscous liquid, the method for cooling off again, pulverizing.United States Patent (USP) 3636017 discloses the method for another kind of synthetic fat acyl lactate: with the oxyhydroxide synthesizing lactic acid salt of lactic acid and basic metal or alkaline-earth metal, and the same again fatty acid esterification of lactic acid salt, synthetic fat acyl lactate.
Improvement of the present invention is:
1, earlier main production raw material is carried out pre-treatment, improve reactive behavior, synthesize with other raw materials again, the preparation fatty acyl lactate.
2, utilize heterogeneous catalysis technology, select for use suitable gas phase composition that catalyzer and protective gas are become one, make technology the best.
No matter 3, using reasonable raw material proportioning and production technique to make product is single fatty acyl lactate (as stearoyl lactate), or other products (as CSL one sodium), all be white, the powder of non-hygroscopic can mix for dry type and use.
The main effect of fatty acyl lactate is among the present invention:
(1) aniorfic surfactant.
(2) flour treatment agent.
(3) nutrition-fortifying agent.
(4) stable and peptizer.
(5) moisture content retention agent.
The preparation process of fatty acyl lactate mainly is among the present invention; (1), preferentially selects the saturated fatty acid of 16 to 20 carbon atoms for use with 12 lipid acid more than the carbon atom; At the winterized stearin more than 50 ℃, preferentially select melting point the perhydro-winterized stearin of 16 to 20 carbon atoms for use; In protective gas, be heated to more than 50 ℃, preferentially select 120-220 ℃ for use; In stirring, add the fine purification of lactic acid of 0.5 to 2.5 times of lipid acid equivalent, be warming up to esterification reaction temperature 150-250 ℃, preferentially select for use 180-220 ℃ to react; Reaction times is more than 30 minutes, preferentially selects for use 50-150 minute, and the water that generates in the esterification is discharged from reactor with vacuum or normal pressure.(2) after esterification was finished, adding basic metal, alkaline earth metal compound reacted, and employed basic metal, alkaline earth metal compound can be single, also can be mixtures, and temperature of reaction is 150 minutes.(3) products therefrom was white thick liquid after reaction was finished, and can be cooled to solid, also can make powder in cooling, obtained white, powdery, non-hygroscopic fatty acyl lactate.
To further introduce the present invention with example below.
Example 1
With 2.0 kilograms of stearic acid (industrial one-level), 0.9 kilogram of hardened tallow is packed in the reactor of 5 liters of belt stirrers, logical protectiveness catalytic gas: CO
2, be heated to 200 ℃, under agitation condition, in 40 minutes, drip 1.5 kilograms of L type lactic acid, and be warming up to 220 ℃, water and the lower boiling composition that generates extracted in esterification 50 minutes simultaneously out; After esterification is finished, in 30 minutes, evenly add 0.45 kilogram of sodium hydroxide, temperature is raised to 210 ℃, reacted 30 minutes, cool off, make powder, obtain 4.0 kilograms of whites, powdery non-hygroscopic stearoyl lactate.48-56 ℃ of product fusing point, acid number 90 (milligram KOH/ gram), ester value 140 (milligram KOH/ gram).
Example 2
With 2.0 kilograms of stearic acid (industrial one-level), 0.1 kilogram of hardened palm oil in the reactor of the 5 liters of belt stirrers of packing into, feeds protectiveness catalytic gas CO
2, be heated to 200 ℃, under agitation be added dropwise to 1.5 liters of dl type lactic acid, be warming up to 250 ℃, esterification 50 minutes is discharged water and the lower boiling composition that generates simultaneously, evenly adds 0.6 kilogram of calcium hydroxide after esterification is finished in 30 minutes, reacted 120 minutes, cool off, make powder, obtain 3.2 kilograms of whites, powder CSL, 49-51 ℃ of product fusing point, acid number 70 (milligram KOH/ gram), ester value 130 (milligram KOH/ gram).
Example 3
With 2.0 kilograms of stearic acid (industrial one-level), 0.1 kilogram of sclerosis lard, in the reactor of the 5 liters of belt stirrers of packing into, heating and melting feeds protectiveness catalytic gas CO
2, in 5 minutes, under the agitation condition, 1.5 kilograms of dl type lactic acid are poured into, be warming up to 200 ℃, esterification 50 minutes is extracted water and the lower boiling composition that generates simultaneously out, after esterification is finished, add the mixture of 0.18 kilogram of sodium hydroxide and 0.36 kilogram of calcium hydroxide, be warming up to 210 ℃, reacted 120 minutes, powder is made in cooling, obtains 3.0 kilograms of whites, powdery, non-hygroscopic stearic acid calcium lactate one sodium.42-54 ℃ of product fusing point, acid number 80 (milligram KOH/ gram), ester value 140 (milligram KOH/ gram).
Claims (16)
1, white, powdery, non-hygroscopic fatty acyl lactate and preparation method thereof is characterized in that the molecular structural formula of fatty acyl lactate is:
Wherein R-C=O is the acyl group of the above lipid acid of 12 carbon atoms, and n is that 1～9X is basic metal, alkaline-earth metal.
2, according to claim 1 described molecular structural formula, the whiteness that it is characterized in that fatty acyl lactate is more than 72%.
3, according to claim 1 described molecular structural formula, the fineness that it is characterized in that fatty acyl lactate is more than 60 orders.
4,, it is characterized in that no moisture absorption caking phenomenon in the holding conditions of fatty acyl lactate under product description according to claim 1 described molecular structural formula.
5, white, powdery, non-hygroscopic fatty acyl lactate and preparation method thereof is characterized in that:
(a) lipid acid, winterized stearin, lactic acid, alkali metal compound, alkaline earth metal compound carry out reacting by heating under the gas catalysis effect with protectiveness;
(b) be under the 120-220 ℃ of condition lactic acid to be added in the lipid acid and winterized stearin of fusing in temperature;
(c) be to carry out esterification under the 150-250 ℃ of condition in temperature more than 30 minutes and remove by product;
(d) in esterification, feed the gas that not only has protective nature but also have the catalysis effect, make to be reflected under the heterogeneous catalysis condition and carry out;
(e) react with basic metal, alkaline earth metal compounds after esterification is finished;
(f) after finishing product is made powder with basic metal, alkaline earth metal compound reaction.
6, according to claim 5 described methods, it is characterized in that used lactic acid is L type lactic acid, dl type lactic acid, purity is all more than 80%.
7,, it is characterized in that it is 120-220 ℃ that lactic acid adds fashionable temperature according to claim 5 described methods.
8,, it is characterized in that lipid acid is to have the above higher fatty acid of 12 carbon atoms according to claim 5 described methods.
9,, it is characterized in that winterized stearin is to have the above perhydro-winterized stearin of 16 carbon atoms according to claim 5 described methods.
10,, it is characterized in that esterification carries out having under the catalytic gas condition of protectiveness according to claim 5 described methods.
11,, it is characterized in that esterification reaction temperature is 150-250 ℃ according to claim 5 described methods.
12,, it is characterized in that reaction time of esterification is more than 30 minutes according to claim 5 described methods.
13,, it is characterized in that esterification carries out having under the catalytic gas condition of protectiveness according to claim 5 described methods.
14, it is characterized in that reacting according to claim 5 described methods with solid alkali metal, alkaline earth metal compound.
15, it is characterized in that according to claim 5 described methods that alkaline-earth metal, alkali metal compound can add separately or be to mix in 1: 0.2 to 1: 0.8 to add with mol ratio.
16, it is characterized in that making powder craft according to claim 5 described methods can make product fineness reach more than 60 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97118771 CN1180693A (en) | 1997-10-13 | 1997-10-13 | White, powder, non-hygroscopic fatty acyl lactate and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97118771 CN1180693A (en) | 1997-10-13 | 1997-10-13 | White, powder, non-hygroscopic fatty acyl lactate and its preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1180693A true CN1180693A (en) | 1998-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97118771 Pending CN1180693A (en) | 1997-10-13 | 1997-10-13 | White, powder, non-hygroscopic fatty acyl lactate and its preparing method |
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| CN (1) | CN1180693A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086380C (en) * | 1999-05-21 | 2002-06-19 | 河南兴泰精细化工有限公司 | Process for preparing fatty acyl lactate |
| CN103224675A (en) * | 2013-05-24 | 2013-07-31 | 河南正通化工有限公司 | Food-grade plastic PVC (polyvinyl chloride) heat stabilizer and preparation method thereof |
-
1997
- 1997-10-13 CN CN 97118771 patent/CN1180693A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086380C (en) * | 1999-05-21 | 2002-06-19 | 河南兴泰精细化工有限公司 | Process for preparing fatty acyl lactate |
| CN103224675A (en) * | 2013-05-24 | 2013-07-31 | 河南正通化工有限公司 | Food-grade plastic PVC (polyvinyl chloride) heat stabilizer and preparation method thereof |
| CN103224675B (en) * | 2013-05-24 | 2015-12-09 | 河南正通化工有限公司 | A kind of food grade plastic PVC heat stabilizer and preparation method thereof |
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