CN108003197A - A kind of preparation method of sucrose polyfatty acid esters - Google Patents
A kind of preparation method of sucrose polyfatty acid esters Download PDFInfo
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- CN108003197A CN108003197A CN201711481365.0A CN201711481365A CN108003197A CN 108003197 A CN108003197 A CN 108003197A CN 201711481365 A CN201711481365 A CN 201711481365A CN 108003197 A CN108003197 A CN 108003197A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
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- C07H1/00—Processes for the preparation of sugar derivatives
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H13/00—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids
- C07H13/02—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids
- C07H13/04—Compounds containing saccharide radicals esterified by carbonic acid or derivatives thereof, or by organic acids, e.g. phosphonic acids by carboxylic acids having the esterifying carboxyl radicals attached to acyclic carbon atoms
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Abstract
The invention discloses a kind of preparation method of sucrose polyfatty acid esters, fatty acid methyl ester is added portionwise in sucrose and is reacted for it, first set reaction is to be carried out under specific reaction condition using alkalescent catalyst, second secondary response is to be carried out under specific reaction condition using moderate strength basic catalyst, and then reactant is purified using particular step.The compatibility of raw material is improved, makes reaction be easy to carry out, improves yield by using the mode that fatty acid methyl ester is added portionwise in sucrose and using the combination of alkalescent and moderate strength basic catalyst, the method for the present invention.Moreover, first set reaction forms sucrose monoester, diester and polyesters mixture using weak base catalytic esterification, the drawbacks of sucrose is difficult scattered, easy coking changes colour at reaction conditions is overcome.In addition, also using principle of the sucrose polyfatty acid esters insoluble in ethanol, individually ethanol is used to be purified for extractant, products obtained therefrom purity is high, has safe and environment-friendly and nonirritant advantage.
Description
Technical field
The present invention relates to field of fine chemical, the preparation method of more particularly to a kind of sucrose polyfatty acid esters and its prepared production
Product.
Background technology
With economic development and improvement of living standard, people increasingly pay attention to own health and environment.It is nontoxic, stingless
Sharp, high-quality and efficient commodity raw material becomes the direction of consumer demand and industry development.Sucrose polyfatty acid esters is that one kind of sucrose is spread out
Biology, it is that one kind has wider HLB value (hydrophilic-hydrophobic balance value, also referred to as water oil content), nontoxic, safe to the human body and stingless
Sharp nonionic surfactant.It is that the ester synthesized by sucrose with aliphatic acid or by aliphatic acid occurs esterification and formed,
The property for the sucrose polyfatty acid esters that the hydroxyl generation esterification of more than six is generated is similar to edible oil and fat on sucrose.Sucrose polyfatty acid esters
Hydrolyzable is edible aliphatic acid and sucrose in human body, participates in the metabolism of human body, has nutritive value.In food row
The industries such as industry, chemical industry, health care and cosmetics are widely used, and have been to be concerned by more and more people.
A series of synthetic methods of sucrose polyfatty acid esters basically develop on the basis of sucrose Lipase absobed.
U.S.'s sugar industry Research Foundation chairman FosterD.Snell at the beginning of the last century 50's proposes to connect on sucrose molecule
" aliphatic acid tail " is used as the imagination of detergent.Using the hydrophily of sucrose and the lipophile of aliphatic acid, make sucrose and fat
Acid carries out esterification so that obtain can be as the esterification products i.e. sucrose ester of surfactant.The esterification degree of this esterification products compared with
It is low, it is only an ester, diester and three esters, it has good amphipathic property, food work is widely used in as emulsifying agent
In industry.Sucrose polyfatty acid esters is equally the esterification products of sucrose and aliphatic acid, but its esterification degree is higher.Only when esterification degree reaches 6~8
When, this kind of esterification products can not make fat substitute by the particularly lipase hydrolysis of the enzyme in human body.Sucrose molecule
The reactivity of three primary hydroxyls is more much higher than the reactivity of five secondary hydroxyls, about 10 times.So in three primary hydroxyls
Upper progress ester exchange reaction is easier, and ester exchange reaction is carried out on remaining five secondary hydroxyl and have clearly a need for higher
Reaction condition, and increasing with the long-chain fat acid molecule being connected on sucrose molecule, steric hindrance is bigger, the difficulty of reaction
Degree is higher.Therefore, although the synthesis of sucrose polyfatty acid esters is also in carrying out ester exchange reaction between sucrose and aliphatic acid, its institute
It is required that reaction condition it is much harsh.
The sucrose polyfatty acid esters Olestra of Procter and Gamble companies exploitation can be used for warm-served food product and ice confectionery, it is by the U.S.
Food and Drug Administration (FDA) ratifies as a kind of new food additives.Sucrose polyfatty acid esters is due to its good performance, from upper
Demand quickly increases since city, is the product for complying with era development, has been achieved with industrializing abroad, and demonstrate to human body
Without any stimulation and side effect.The trade name CRODADERM that standing grain major company of the U.S. sellsTMS, BandC sucrose many fatty acid ester
It is used as cosmetic emollients raw material, is applied in high-end daily chemical products, there is provided moisturizing, moist, soft and automatically cleaning skin etc.
Effect.China's sucrose ester exploitation is later, and kind is few, it is difficult to meet the needs of the industries such as beverage, emulsifying essence, daily use chemicals, it is related
The exploitation of sucrose polyfatty acid esters is scarcely out of swaddling-clothes, and does not propose the synthesis of sucrose polyester industrialized production route of maturation also.
The content of the invention
In order to solve above-mentioned the shortcomings of the prior art, primary and foremost purpose of the invention is to provide a kind of sucrose
The preparation process of polyester.
The purpose of the present invention is realized by following technical proposals：
A kind of preparation method of sucrose polyfatty acid esters, the sucrose polyfatty acid esters have the structure as shown in formula (1)：
Wherein, R=H orN=8~30；
The preparation method includes following operating procedure：
(1) add suitable quantity of water in sucrose, be warming up to 40~80 DEG C, after sucrose is completely dissolved, add alkalescent catalyst
With Part I fatty acid methyl ester, adjustment pressure is -0.065~0.095MPa, is warming up to 90~110 DEG C, when reaction 3~8 is small；
(2) question response mixture adds Part II fatty acid methyl ester, and add moderate strength base catalysis into after homogeneous
Agent, adjustment pressure is -0.095MPa, be warming up to 100~150 DEG C of reactions 6~12 it is small when, the crude product of sucrose polyfatty acid esters is prepared；
Wherein, the molar ratio of the total amount and sucrose of Part I fatty acid methyl ester and Part II fatty acid methyl ester is 6.5
~10.5；And Part I fatty acid methyl ester accounts for the 5 of the total amount of Part I fatty acid methyl ester and Part II fatty acid methyl ester
~30%.
Further as above-mentioned technical proposal is improved, the further following operating procedure of the preparation method of the sucrose polyfatty acid esters
(3)：
Pure water is added in obtained sucrose polyfatty acid esters crude product, is warming up to 50~100 DEG C, adjustment pH is 3~7, stirring 10
~after forty minutes, static 1~3 small layered, separates water phase, retains organic phase, so as to remove the catalyst in sucrose polyfatty acid esters
And unreacted sucrose.
Further as above-mentioned technical proposal is improved, and further following operation walks the preparation method of the sucrose polyfatty acid esters
Suddenly (4)：
Ethanol is added in organic phase, controlled at 30~60 DEG C, stirring 10~after sixty minutes, static layering 1~3 is small
When, alcohol layer is separated, retains organic phase；Under vacuo controlled at 40~120 DEG C, ethanol is further removed, must be purified
Sucrose polyfatty acid esters.
Further as above-mentioned technical proposal is improved, and alkalescent catalyst is sodium acetate wherein described in step (1), is used
Measure 1~5% of the weight for the sucrose.
Further as above-mentioned technical proposal is improved, and wherein moderate strength basic catalyst is sodium carbonate in step (2)
Or potassium carbonate, dosage are the 1~5% of the weight of the sucrose.Moderate strength basic catalyst (such as K2CO3) in CO3 2-Have
Certain activity, is preferable deprotonation catalyst, it is broken the hydroxyl base 0-H keys in sucrose molecule, generation
HCO3 2-, while generate the higher sucrose anion of activity.At this moment between the cation in sucrose anion and phase transfer catalyst
The less firm key of generation.Then sucrose anion is taken in organic phase by phase transfer catalyst from inorganic phase, and in organic phase
In be diffused, while the long chain fatty acids second in attack organic phase it is cruel in dial base carbon atom, occur nucleophilic substitution, shape
Into transition state.Then, CH is sloughed from carbonylic carbon atom3CH2O-, generate sucrose ester, the CH of generation3CH2O-With in mixture
Proton is combined into ethanol and is finally discharged system.And phase transfer catalyst restores to the original state at this time, return in inorganic phase, carry out
" transport " next time.Hydroxyl on the sucrose ester of generation can be acted on further with basic catalyst, re-form sucrose bear from
Son, repeats the above process.
Further as above-mentioned technical proposal is improved, wherein the fatty acid methyl ester is containing 8~18 carbon atoms
Saturated or unsaturated fatty acid methyl ester or their mixture, common saturation and insatiable hunger including 8 to 18 carbon atoms
And acid：(1) saturated acid：Capric acid, laurate, behenic acid, different tetradecanoic acid, different Heptadecanoic acide, myristic acid, tetradecanoic acid are pungent
Acid, anteiso- arachidic acid, stearic acid, palmitic acid etc..(2) unsaturated acids：Oleic acid, linoleic acid, linolenic acid, arachidonic acid etc..
Further as above-mentioned technical proposal is improved, and wherein step (3) may be repeated, until the pH of water phase for 7~
7.5。
Further as above-mentioned technical proposal is improved, and wherein step (4) may be repeated, until the acid number of organic phase is small
In 0.5mg KOH/g.
Another object of the present invention is to provide a kind of sucrose polyfatty acid esters being prepared using the above method.
The preparation method technique of sucrose polyfatty acid esters provided by the invention is simple, reaction condition is gentle, and ester can be prepared
Change degree is 6~8 sucrose polyfatty acid esters.Intermediate-sucrose list of the invention by selecting alkalescent catalyst synthesis of sucrose polyester
The mixture of ester, diester and three esters, and then the problem of overcome the poor compatibility of sucrose and fatty acid methyl ester, while the sugarcane formed
Sugared monoesters, diester and three esters are relatively stablized under the reaction condition that the present invention limits, under moderate strength basic catalyst
In the presence of do not allow with fatty acid methyl ester reaction easy to change, the sucrose polyfatty acid esters lighter color that is prepared, smell are low, meet cosmetics
The high request of raw material.
Therefore, the present invention compared with the prior art, has the following advantages and beneficial effect：
(1) it is by using the mode that fatty acid methyl ester is added portionwise in sucrose and alkaline using alkalescent and moderate strength
The combination of catalyst, the method for the present invention improve the compatibility of raw material, make reaction be easy to carry out, improve yield.
(2) first set reaction forms sucrose monoester, diester and polyesters mixture using weak base catalytic esterification, overcomes sucrose
The drawbacks of hardly possible is scattered, easy coking changes colour at reaction conditions.
(3) principle of the sucrose polyfatty acid esters insoluble in ethanol is make use of, individually uses ethanol to be purified for extractant, gained production
Product purity is high, has safe and environment-friendly and nonirritant advantage.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
Embodiment 1
(1) synthesis of sucrose polyfatty acid esters crude product：
Into the four-hole boiling flask with vacuum plant and agitating device, 15g water and 0.1mol sucrose are added, is warming up to 40
DEG C, after sucrose is completely dissolved, alkalescent catalyst acetic acid sodium 3.0g is added, then adds the soybean oleic acid first of 0.033mol
Ester, opens vacuum to -0.065MPa, be warming up to 90 DEG C of reactions 8 it is small when；Question response thing is cooled to less than 80 DEG C, solves into after homogeneous
Except vacuum, 0.62mol oleic acid methyl esters is added, and adds moderate strength basic catalyst potassium carbonate 2.5g, is continued on true
It is empty to -0.095MPa, be warming up to 150 DEG C of insulation reactions to 12 it is small when, obtain sucrose polyfatty acid esters crude product.
(2) sucrose polyfatty acid esters crude product removes catalyst and unreacted sucrose：
After reaction, the pure water that weight is 3 times of sucrose polyfatty acid esters crude product is added, 80 DEG C is warming up to, adds 10% acetic acid
Solution tune pH to 5, stir 40 minutes, then static 1.5 it is small when, separate water phase；Organic phase continuously adds 3 times of pure water, rises
Warm to 80 DEG C are stirred 40 minutes, and then static layering, separates water phase.The step is repeated, until the pH of water phase is 7.
(3) the purifying extraction of sucrose polyfatty acid esters：
Sucrose polyfatty acid esters obtained by step (2) is dissolved in weight in its 3 times ethanol, to control temperature 50 C, stirs 45 points
Clock, when then static layering 1 is small, separates alcohol layer.Ethanol extracted several times are repeated, until acid number is less than 1mg KOH/g.Then open
Open vacuum to 0.095MPa, 115 DEG C of temperature of control and take off ethanol, obtain pale yellow transparent, there is the sucrose polyfatty acid esters of characteristic odor.
Comparative example 1
(1) synthesis of sucrose polyfatty acid esters crude product：
Into the four-hole boiling flask with vacuum plant and agitating device, 15g water and 0.1mol sucrose are added, is warming up to 40
DEG C, after sucrose is completely dissolved, add the methyl soyate and 0.62mol oleic acids of potassium carbonate 2.5g and 0.033mol
Methyl esters, opens vacuum to -0.095MPa, be warming up to 150 DEG C of insulation reactions 12 it is small when, obtain sucrose polyfatty acid esters crude product.
(2) sucrose polyfatty acid esters crude product removes catalyst and unreacted sucrose：
After reaction, the pure water that weight is 3 times of sucrose polyfatty acid esters crude product is added, 80 DEG C is warming up to, adds 10% acetic acid
Solution tune pH to 5, stir 40 minutes, then static 1.5 it is small when, separate water phase；Organic phase continuously adds 3 times of pure water, rises
Warm to 80 DEG C are stirred 40 minutes, and then static layering, separates water phase.The step is repeated, until the pH of water phase is 7.
(3) the purifying extraction of sucrose polyfatty acid esters：
Sucrose polyfatty acid esters obtained by step (2) is dissolved in weight in its 3 times ethanol, to control temperature 50 C, stirs 45 points
Clock, when then static layering 1 is small, separates alcohol layer.Ethanol extracted several times are repeated, until acid number is less than 1mg KOH/g.Then open
Vacuum to 0.095MPa, 115 DEG C of temperature of control is opened to take off ethanol, obtain sucrose polyfatty acid esters.
Embodiment 2
(1) synthesis of sucrose polyfatty acid esters crude product：
Into the four-hole boiling flask with vacuum plant and agitating device, 30g water and 0.1mol sucrose are added, is warming up to 60
DEG C, after sucrose is completely dissolved, alkalescent catalyst acetic acid sodium 3.5g is added, then adds the methyl soyate of 0.24mol,
Vacuum is opened to -0.095MPa, be warming up to 110 DEG C of reactions 3 it is small when；Question response thing is cooled to less than 80 DEG C, releasing into after homogeneous
Vacuum, adds 0.56mol methyl soyates and adds moderate strength catalyst potassium carbonate 3.5g, continue on vacuum to-
0.095MPa, be warming up to 120 DEG C of insulation reactions to 8 it is small when.
(2) sucrose polyfatty acid esters crude product removes catalyst and unreacted sucrose：
After reaction, the pure water that weight is 2 times of sucrose polyfatty acid esters crude product is added, is warming up to 100 DEG C, with the vinegar for adding 10%
Acid solution tune PH to 3, stir 20 minutes, then static 3 it is small when, separate water phase；Organic phase continuously adds 2 times of pure water, rises
Warm to 100 DEG C are stirred 20 minutes, and then static layering, separates water phase.The step is repeated, until the pH of water phase is 7.5.
(3) sucrose ester purifying extraction
Sucrose polyfatty acid esters obtained by step (2) is dissolved in weight in its 2 times ethanol, to control temperature 60 C, stirs minute,
Then when static layering 3 is small, alcohol layer is separated.Ethanol extracted several times are repeated, until acid number is less than 0.5mg KOH/g.Then open
Open vacuum to 0.095MPa, 115 DEG C of temperature of control and take off ethanol, obtain pale yellow transparent, there is the sucrose polyfatty acid esters of characteristic odor.
Comparative example 2
(1) synthesis of sucrose polyfatty acid esters crude product：
Into the four-hole boiling flask with vacuum plant and agitating device, 30g water and 0.1mol sucrose are added, is warming up to 60
DEG C, after sucrose is completely dissolved, add the methyl soyate of potassium carbonate 3.5g and 0.80mol, open vacuum to-
0.095MPa, be warming up to 120 DEG C of insulation reactions 8 it is small when, obtain sucrose polyfatty acid esters crude product.
(2) sucrose polyfatty acid esters crude product removes catalyst and unreacted sucrose：
After reaction, the pure water that weight is 2 times of sucrose polyfatty acid esters crude product is added, is warming up to 100 DEG C, with the vinegar for adding 10%
Acid solution tune PH to 3, stir 20 minutes, then static 3 it is small when, separate water phase；Organic phase continuously adds 2 times of pure water, rises
Warm to 100 DEG C are stirred 20 minutes, and then static layering, separates water phase.The step is repeated, until the pH of water phase is 7.5.
(3) sucrose ester purifying extraction
Sucrose polyfatty acid esters obtained by step (2) is dissolved in weight in its 2 times ethanol, to control temperature 60 C, stirs minute,
Then when static layering 3 is small, alcohol layer is separated.Ethanol extracted several times are repeated, until acid number is less than 0.5mg KOH/g.Then open
Vacuum to 0.095MPa, 115 DEG C of temperature of control is opened to take off ethanol, obtain sucrose ester.
Embodiment 3
(1) synthesis of sucrose polyfatty acid esters crude product：
Into the four-hole boiling flask with vacuum plant and agitating device, 60g water and 0.1mol sucrose are added, is warming up to 80
DEG C, after sucrose is completely dissolved, alkalescent catalyst acetic acid sodium 5.5g is added, then adds the cocinic acid first of 0.315mol
Ester, opens vacuum to -0.085MPa, be warming up to 100 DEG C of reactions 7 it is small when；Question response thing is cooled to less than 80 DEG C into after homogeneous,
Vacuum is released, 0.735mol cocinic acids methyl esters is added and adds moderate strength catalyst potassium carbonate 5.0g, continue on vacuum
To -0.095MPa, be warming up to 115 DEG C of insulation reactions to 10 it is small when.
(2) sucrose polyfatty acid esters crude product removes catalyst and unreacted sucrose：
After reaction, the pure water that weight is 2.5 times of sucrose polyfatty acid esters crude product is added, 90 DEG C is warming up to, adds 10% vinegar
Acid solution tune PH to 6, stir 30 minutes, then static 2.5 it is small when, separate water phase；Organic phase continuously adds 2.5 times pure
Water, is warming up to 90 DEG C and stirs 30 minutes, then static layering.The step is repeated, until the pH of water phase is 7.5.
(3) sucrose ester purifying extraction：
Sucrose polyfatty acid esters obtained by step (2) is dissolved in weight in its 1.5 times ethanol, to control temperature 60 C, stirring 60
Minute, when then static layering 3 is small, separate alcohol layer.Ethanol extracted several times are repeated, until acid number is less than 1mg KOH/g.Then
Open vacuum to 0.095MPa, 115 DEG C of temperature of control and take off ethanol, it is more to obtain pale yellow transparent, the sucrose with characteristic odor
Ester.
Comparative example 3
(1) synthesis of sucrose polyfatty acid esters crude product：
Into the four-hole boiling flask with vacuum plant and agitating device, 60g water and 0.1mol sucrose are added, is warming up to 80
DEG C, after sucrose is completely dissolved, add the cocinic acid methyl esters of potassium carbonate 5.0g and 1.05mol, open vacuum to-
0.095MPa, be warming up to 115 DEG C of insulation reactions 10 it is small when, obtain sucrose polyfatty acid esters crude product.
After reaction, the pure water that weight is 2.5 times of sucrose polyfatty acid esters crude product is added, 90 DEG C is warming up to, adds 10% vinegar
Acid solution tune PH to 6, stir 30 minutes, then static 2.5 it is small when, separate water phase；Organic phase continuously adds 2.5 times pure
Water, is warming up to 90 DEG C and stirs 30 minutes, then static layering.The step is repeated, until the pH of water phase is 7.5.
(3) sucrose ester purifying extraction：
Sucrose polyfatty acid esters obtained by step (2) is dissolved in weight in its 1.5 times ethanol, to control temperature 60 C, stirring 60
Minute, when then static layering 3 is small, separate alcohol layer.Ethanol extracted several times are repeated, until acid number is less than 1mg KOH/g.Then
Vacuum to 0.095MPa, 115 DEG C of temperature of control is opened to take off ethanol, obtain sucrose polyfatty acid esters.
Product testing
Esterification degree detects：The how cruel cruelization degree of sucrose is measured, the content of hydroxyl base in product need to be first measured, then use non-ester
Contained hydroxyl value subtracts the hydroxyl value in product in the sucrose of change, you can draws how many hydroxyl by ester.The measure side of hydroxyl
Method generally uses acetic anhydride-pyridine second phthalein method.
Calculation of yield：Wherein W1 is dosage of sucrose (g), and M1 is that sucrose molecule amount 342, W, 2 is that sucrose is more
Ester actual production (g), M2 are sucrose polyfatty acid esters molecular weight 342+238*n (n is the number of fatty phthalidyl).
| Embodiment 1 | Comparative example 1 | Embodiment 2 | Comparative example 2 | Embodiment 3 | Comparative example 3 | |
| Esterification degree | 6.357 | 5.260 | 6.767 | 5.325 | 7.243 | 5.944 |
| Yield | 95.11 | 78.93 | 94.66 | 80.91 | 96.59 | 82.65 |
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention and from above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of sucrose polyfatty acid esters, the sucrose polyfatty acid esters has the structure as shown in formula (1)：
Wherein, R=H orN=8~30；
The preparation method includes following operating procedure：
(1) in sucrose plus suitable quantity of water, 40~80 DEG C are warming up to, after sucrose is completely dissolved, adds alkalescent catalyst and the
A part of fatty acid methyl ester, adjustment pressure are -0.065~0.095MPa, are warming up to 90~110 DEG C, when reaction 3~8 is small；
(2) question response mixture adds Part II fatty acid methyl ester into after homogeneous, and adds moderate strength basic catalyst,
Adjustment pressure is -0.095MPa, be warming up to 100~150 DEG C of reactions 6~12 it is small when, the crude product of sucrose polyfatty acid esters is prepared；
Wherein, the molar ratio of the total amount and sucrose of Part I fatty acid methyl ester and Part II fatty acid methyl ester for 6.5~
10.5；And Part I fatty acid methyl ester account for the total amount of Part I fatty acid methyl ester and Part II fatty acid methyl ester 5~
30%.
2. the preparation method of sucrose polyfatty acid esters as claimed in claim 1, further following operating procedure (3)：
Pure water is added in obtained sucrose polyfatty acid esters crude product, is warming up to 50~100 DEG C, adjustment pH is 3~7, stirring 10~40
After minute, static 1~3 small layered separates water phase, retains organic phase, thus remove catalyst in sucrose polyfatty acid esters and
Unreacted sucrose.
3. the preparation method of sucrose polyfatty acid esters as claimed in claim 2, further following operating procedure (4)：
Ethanol is added in organic phase, controlled at 30~60 DEG C, stirring 10~after sixty minutes, when static layering 1~3 is small,
Alcohol layer is separated, retains organic phase；Under vacuo controlled at 40~120 DEG C, ethanol is further removed, obtains the sugarcane of purifying
Sugared polyester.
4. suitable quantity of water described in the preparation method of sucrose polyfatty acid esters as claimed in claim 1, wherein step (1) is sucrose weight used
The 30%~200% of amount.
5. alkalescent catalyst described in the preparation method of sucrose polyfatty acid esters as claimed in claim 1, wherein step (1) is acetic acid
Sodium, dosage are the 1~5% of the weight of the sucrose.
6. moderate strength basic catalyst is carbon in the preparation method of sucrose polyfatty acid esters as claimed in claim 1, wherein step (2)
Sour sodium or potassium carbonate, dosage are the 1~5% of the weight of the sucrose.
7. the preparation method of sucrose polyfatty acid esters as claimed in claim 1, wherein the fatty acid methyl ester is to contain 8~18 carbon originals
The saturated or unsaturated fatty acid methyl ester or their mixture of son.
8. the preparation method of sucrose polyfatty acid esters as claimed in claim 2, wherein step (3) may be repeated, until the pH of water phase
For 7~7.5.
9. the preparation method of sucrose polyfatty acid esters as claimed in claim 3, wherein step (4) may be repeated, until organic phase
Acid number is less than 1mg KOH/g.
A kind of 10. sucrose polyfatty acid esters being prepared using claim 1~9 any one of them method.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109400659A (en) * | 2018-10-22 | 2019-03-01 | 华南理工大学 | A kind of preparation method of coloury high esterification degree sucrose fatty acid polyester and its simple process |
| CN109453717A (en) * | 2018-11-06 | 2019-03-12 | 中国林业科学研究院林产化学工业研究所 | A kind of rubber seed oil sucrose ester surfactants and its synthetic method |
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