CN108047341A - A kind of preparation method of rubber gloves interleaving agent converted starch - Google Patents
A kind of preparation method of rubber gloves interleaving agent converted starch Download PDFInfo
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- CN108047341A CN108047341A CN201711390616.4A CN201711390616A CN108047341A CN 108047341 A CN108047341 A CN 108047341A CN 201711390616 A CN201711390616 A CN 201711390616A CN 108047341 A CN108047341 A CN 108047341A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/18—Oxidised starch
- C08B31/185—Derivatives of oxidised starch, e.g. crosslinked oxidised starch
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D103/00—Coating compositions based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09D103/04—Starch derivatives
- C09D103/10—Oxidised starch
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Abstract
A kind of preparation method of rubber gloves interleaving agent converted starch, comprises the following steps：By starch it is oxidized after, add in crosslinking agent and carry out cross-linking reaction, the mixed liquor obtained to cross-linking reaction carries out secondary oxidation, obtains converted starch.According to the preparation method of above-described embodiment, due to the protein on oxidation reaction hydrolysis starch particle twice so that starch molecule fully exposes, and reaction can be more fully crosslinked, so as to obtain the high converted starch of the degree of cross linking.
Description
Technical field
The present invention relates to rubber gloves interleaving agent fields, and in particular to a kind of system of rubber gloves interleaving agent converted starch
Preparation Method.
Background technology
The interleaving agent that rubber gloves uses at present is typically talcum powder or converted starch.Wherein talcum powder contacts skin for a long time
Skin easily causes user's skin allergy or even causes skin adverse reaction, meanwhile, talcum powder also have not environmentally the defects of,
Therefore it is less on the market to use talcum powder as interleaving agent.And above-mentioned ask can be solved using converted starch just as interleaving agent
Topic.
The converted starch of interleaving agent is starch with after appropriate crosslinking agent reaction, the starch molecule on starch granules is passed through
Crosslinking bonding generates the macromolecular of dimensional network structure.This converted starch is nontoxic, performance is stablized, at a higher temperature
Also it is not gelatinized.Contain straight chain and amylopectin two parts in starch granules.Shrink glucose unit in both starch molecules
So that hydroxyl activity is larger.Originally grain structure was formed by hydrogen bond action between straight chain and branched amylopectin molecules, now due to handing over
Connection between starch molecule as a result, generate new chemical crossbond so that and the intensity of crosslinked starch particle increases, and performance is stablized,
It is not also gelatinized under higher temperature.Chinese patent literature such as Publication No. 106939053A discloses a kind of preparation of crosslinked starch
Method, wherein specifically disclosing the specific steps of the preparation method：It must form sediment after native starch is mixed with sodium hydrate aqueous solution A
Slurry adjusts the pH value of starch slurry, and control ph is 7~12, then by starch slurry under the synergistic effect of microwave and ultrasound
It is reacted to get crosslinked starch.
But existing converted starch crosslinking process is there are some defects, due to protein contained in starch granules and shallow lake
Powder particles are combined closely, and hinder the reaction of starch molecule and crosslinking agent so that crosslinking degree is difficult to improve.In addition, pass
The cross-linking reaction speed of system is slow, and the reaction time is long, and production efficiency is relatively low.
The content of the invention
To solve the above problems, the application provides a kind of preparation method of rubber gloves interleaving agent converted starch, the system
Preparation Method can improve the crosslinking degree of converted starch, improve performance.
A kind of preparation method of rubber gloves interleaving agent converted starch in the one of which embodiment of the application is provided, is wrapped
Include following steps：By starch it is oxidized after, add in crosslinking agent and carry out cross-linking reaction, the mixed liquor obtained to cross-linking reaction carries out two
Secondary oxidation, obtains converted starch.
Further, the oxidant that oxidation and/or secondary oxidation use is sodium hypochlorite, and dosage is starch on dry basis quality
0.5%.
Further, crosslinking agent is epoxychloropropane, and dosage is the 0.3% of starch on dry basis quality.
Further, the specific steps of preparation method include：
Oxidation：The starch slurry that starch is configured in predefined conditions, after carrying out oxidation reaction with sodium hypochlorite, adds in
Sodium hydrogensulfite is reacted, dehydration washing；
Crosslinking：Under special reaction condition, added in the product obtained toward the step of oxidation by sodium hydroxide and epoxy chlorine
The aqueous slkali that propane mixes is reacted, and is warming up to specific temperature after a certain period of time, is carried out instead after adding in epoxychloropropane
Should, obtain mixed liquor；
Secondary oxidation：In predefined conditions, after the mixed liquor that the step of crosslinking obtains carries out oxidation reaction with sodium hypochlorite,
It adds in sodium hydrogensulfite to be reacted, dehydration washing.
Further, the specific steps of oxidation include：
The starch slurry that starch plus water are configured adjusts pH value to 9-10, and in the condition of heating water bath to 30-32 DEG C
Under, carry out oxidation reaction 1-3h with sodium hypochlorite；
The solution of sodium bisulfite for adding in 10%wt is reacted, dehydration washing.
Further, crosslinked specific steps include：
Under special reaction condition, 2.5%wt sodium hydroxide solutions are added in adjust in the product obtained toward the step of oxidation
PH value is saved to 11.5-11.6, the epoxychloropropane that addition accounts for total dosage 1/3 carries out reaction 10-14h, is warming up to 50-52 DEG C,
Reaction 10-14h is carried out after adding in the epoxychloropropane of remaining dosage, obtains mixed liquor.
Further, the specific steps of secondary oxidation include：
Obtained mixed liquor the step of crosslinking is adjusted into pH value to 9-10, and in heating water bath under conditions of 30-32 DEG C,
Oxidation reaction 1-3h is carried out with sodium hypochlorite；
The solution of sodium bisulfite for adding in 10%wt is reacted.
Further, after the step of secondary oxidation, further include：Salt is added in the product that the step of secondary oxidation obtains
Acid adjusts pH value to after 6-6.2, is washed, be dehydrated, dried, obtain converted starch.
Further, starch is at least one of cornstarch, tapioca or potato starch.
According to above-described embodiment preparation method, as a result of by starch it is oxidized after, add in crosslinking agent be crosslinked
Reaction carries out the mixed liquor that cross-linking reaction obtains the preparation method of secondary oxidation, passes through oxidation reaction hydrolysis starch twice
Protein on grain so that starch molecule fully exposes, and reaction can be more fully crosslinked, so as to obtain the high change of the degree of cross linking
Property starch.
Description of the drawings
Fig. 1 is the flow chart of the preparation method of rubber gloves interleaving agent converted starch in a kind of embodiment of the invention.
Specific embodiment
The present invention is described in further detail below by specific embodiment combination attached drawing.
Fig. 1 is referred to, in embodiments of the present invention, provides a kind of preparation side of rubber gloves interleaving agent converted starch
Method, step include：
Step 1, pretreatment：The starch of predetermined amount is weighed, is fitted into retort, water is added in and is dispersed with stirring into uniform starch
Slurry.Wherein, starch is at least one of cornstarch, tapioca or potato starch.The mass ratio of starch and water is 5:
6, in other embodiments, it can be adjusted according to 4: 6,5: 5 equal proportions.Retort is moved into the water-bath with blender
In be stirred, while the temperature that water-bath is warming up to starch slurry rises to 30-32 DEG C.
Step 2, oxidation：Starch slurry into step 1 adds in salt acid for adjusting pH value to 9-10, in 36-40 DEG C of temperature strip
Under part, oxidation reaction, reaction time 1-3h are carried out with oxidant.Oxidant can be sodium hypochlorite, in other embodiments,
Can also be other oxidants such as hydrogen peroxide, ammonium persulfate or potassium peroxydisulfate.The effect of oxidant is on hydrolysis starch particle
Protein so that starch molecule fully exposes, and can more fully crosslink reaction.Since oxidant is when carrying out oxidation reaction
Protein that not only can be in hydrolysis starch molecule, starch molecule can also be aoxidized, the hydroxyl on glucose residue is oxidized to
Aldehyde radical or carboxyl, therefore the hydroxyl with crosslinking agent reaction can be caused to reduce while the raising of oxidation reaction degree, it can hinder instead
The progress of cross-linking reaction.Therefore in the oxidation reaction carried out before cross-linking reaction, the addition of oxidant is starch on dry basis quality
0.5%.In oxidation reaction process, carboxyl generation can influence pH value, sig water can be added in oxidation process to keep pH
Value stabilization is in the range of 9-10.After oxidation reaction, in 3% hydrochloric acid and pH value to 6-6.2, add the reduction of 10%wt
Agent reduces remaining oxidant.Reducing agent is solution of sodium bisulfite in the present embodiment.Last filtered, washing,
After dehydration, the dry 3.5-5h in 52-58 DEG C of drying box.
Step 3, crosslinking：The sodium hydroxide solution of 2.5%wt is added in the product obtained toward the step of oxidation, to adjust pH
It is worth to 11.5-11.6.The crosslinking agent that addition accounts for total dosage 1/3 carries out reaction 10-14h.Then 50-52 DEG C is warming up to, is added in
Reaction 10-14h is carried out after the crosslinking agent of remaining dosage, obtains mixed liquor.Wherein, crosslinking agent used in the present embodiment is epoxy
Chloropropane, total dosage are the 0.3% of starch on dry basis quality.Cross-linking reaction is carried out by the method to heat up step by step, it can be abundant
Ground makes starch molecule and cross-linking agent, is more fully reacted, so as to improve the crosslinking degree of converted starch.
Step 4, secondary oxidation：Salt acid for adjusting pH value is added in mixed liquor into step 3 to 9-10, at 36-40 DEG C
Under temperature conditionss, oxidation reaction, reaction time 1-3h are carried out with oxidant.Oxidant can be sodium hypochlorite.Oxidant
Addition is the 0.5% of starch on dry basis quality.In oxidation reaction process, carboxyl generation can influence pH value, can be in oxidation process
It is middle to add in sig water to keep pH stable in the range of 9-10.After oxidation reaction, in 3% hydrochloric acid and pH value is to 6-
6.2, the reducing agent for adding 10%wt reduces remaining oxidant.In the present embodiment, reducing agent is bisulfite
Sodium solution.
Step 5, dehydration washing：The product obtained to the step of secondary oxidation adds in hydrochloric acid, adjusts pH value to after 6-6.2,
After being washed, being dehydrated, dry 3.5-5h, obtains converted starch finished product in 52-58 DEG C of drying box.
Embodiment one
In the present embodiment, the preparation method of rubber gloves interleaving agent converted starch is as follows：
Step 1, pretreatment：The cornstarch of predetermined amount is weighed, is fitted into retort, addition water is dispersed with stirring into uniform
Starch slurry.The mass ratio of starch and water is 5: 6.Retort is moved into the water-bath with blender and is stirred, simultaneously will
The temperature that water-bath is warming up to starch slurry rises to 32 DEG C.
Step 2, oxidation：Starch slurry into step 1 adds in salt acid for adjusting pH value to 10, under 40 DEG C of temperature conditionss,
Oxidation reaction 3h is carried out with sodium hypochlorite.In oxidation reaction process, sig water is added in keep scope of the pH stable 10
It is interior.Sodium hypochlorite addition is the 0.5% of starch on dry basis quality.After oxidation reaction, in 3% hydrochloric acid and pH value to 6.2, then
The solution of sodium bisulfite for adding in 10%wt reduces remaining oxidant.After last filtered, washing, dehydration, 58
DEG C drying box in dry 5h.
Step 3, crosslinking：The sodium hydroxide solution of 2.5%wt is added in the product obtained toward the step of oxidation, to adjust pH
It is worth to 11.6.The epoxychloropropane that addition accounts for total dosage 1/3 carries out reaction 14h.Then 52 DEG C are warming up to, adds in remaining dosage
Reaction 14h is carried out after crosslinking agent, obtains mixed liquor.Total dosage of epoxychloropropane is the 0.3% of starch on dry basis quality.
Step 4, secondary oxidation：Salt acid for adjusting pH value is added in mixed liquor into step 3 to 10, in 40 DEG C of temperature strip
Under part, oxidation reaction 3h is carried out with sodium hypochlorite.In oxidation reaction process, sig water is added in keep pH stable 10
In the range of.After oxidation reaction, in 3% hydrochloric acid and pH value to 6.2, add the solution of sodium bisulfite of 10%wt to residue
Oxidant reduced.
Step 5, dehydration washing：The product obtained to the step of secondary oxidation adds in hydrochloric acid, adjusts pH value to after 6.2, into
After row washing, dehydration, dry 5h, obtains converted starch finished product in 58 DEG C of drying box.
Embodiment two
In the present embodiment, the preparation method of rubber gloves interleaving agent converted starch is as follows：
Step 1, pretreatment：The cornstarch of predetermined amount is weighed, is fitted into retort, addition water is dispersed with stirring into uniform
Starch slurry.The mass ratio of starch and water is 5: 6.Retort is moved into the water-bath with blender and is stirred, simultaneously will
The temperature that water-bath is warming up to starch slurry rises to 31 DEG C.
Step 2, oxidation：Starch slurry into step 1 adds in salt acid for adjusting pH value to 9.5, under 38 DEG C of temperature conditionss,
Oxidation reaction 2h is carried out with sodium hypochlorite.In oxidation reaction process, sig water is added in keep scope of the pH stable 9.5
It is interior.Sodium hypochlorite addition is the 0.5% of starch on dry basis quality.After oxidation reaction, in 3% hydrochloric acid and pH value to 6.1, then
The solution of sodium bisulfite for adding in 10%wt reduces remaining oxidant.After last filtered, washing, dehydration, 55
DEG C drying box in dry 4h.
Step 3, crosslinking：The sodium hydroxide solution of 2.5%wt is added in the product obtained toward the step of oxidation, to adjust pH
It is worth to 11.5.The epoxychloropropane that addition accounts for total dosage 1/3 carries out reaction 12h.Then 51 DEG C are warming up to, adds in remaining dosage
Reaction 12h is carried out after crosslinking agent, obtains mixed liquor.Total dosage of epoxychloropropane is the 0.3% of starch on dry basis quality.
Step 4, secondary oxidation：Salt acid for adjusting pH value is added in mixed liquor into step 3 to 9.5, in 38 DEG C of temperature
Under the conditions of, carry out oxidation reaction 2h with sodium hypochlorite.In oxidation reaction process, sig water is added in so that pH stable to be kept to exist
.9.5 in the range of.After oxidation reaction, in 3% hydrochloric acid and pH value is to 6.1, the solution of sodium bisulfite of 10%wt is added
Remaining oxidant is reduced.
Step 5, dehydration washing；The product obtained to the step of secondary oxidation adds in hydrochloric acid, adjusts pH value to after 6.1, into
After row washing, dehydration, dry 4h, obtains converted starch finished product in 55 DEG C of drying box.
Embodiment three
In the present embodiment, the preparation method of rubber gloves interleaving agent converted starch is as follows：
Step 1, pretreatment：The cornstarch of predetermined amount is weighed, is fitted into retort, addition water is dispersed with stirring into uniform
Starch slurry.The mass ratio of starch and water is 4: 6.Retort is moved into the water-bath with blender and is stirred, simultaneously will
The temperature that water-bath is warming up to starch slurry rises to 30 DEG C.
Step 2, oxidation：Starch slurry into step 1 adds in salt acid for adjusting pH value to 9, under 36 DEG C of temperature conditionss, with
Sodium hypochlorite carries out oxidation reaction 1h.In oxidation reaction process, sig water is added in keep pH stable in the range of 9.
Sodium hypochlorite addition is the 0.5% of starch on dry basis quality.After oxidation reaction, in 3% hydrochloric acid and pH value to 6, add
The solution of sodium bisulfite of 10%wt reduces remaining oxidant.After last filtered, washing, dehydration, at 52 DEG C
Dry 3.5h in drying box.
Step 3, crosslinking：The sodium hydroxide solution of 2.5%wt is added in the product obtained toward the step of oxidation, to adjust pH
It is worth to 11.5.The epoxychloropropane that addition accounts for total dosage 1/3 carries out reaction 10h.Then 50 DEG C are warming up to, adds in remaining dosage
Reaction 10h is carried out after crosslinking agent, obtains mixed liquor.Total dosage of epoxychloropropane is the 0.3% of starch on dry basis quality.
Step 4, secondary oxidation：Salt acid for adjusting pH value is added in mixed liquor into step 3 to 9, in 36 DEG C of temperature strip
Under part, oxidation reaction 1h is carried out with sodium hypochlorite.In oxidation reaction process, sig water is added in keep pH stable 9
In the range of.After oxidation reaction, in 3% hydrochloric acid and pH value to 69, add the solution of sodium bisulfite of 10%wt to residue
Oxidant reduced.
Step 5, dehydration washing：The product obtained to the step of secondary oxidation adds in hydrochloric acid, adjusts pH value to after 6, carries out
After washing, dehydration, dry 3.5h, obtains converted starch finished product in 52 DEG C of drying box.
Comparative example one
In this comparative example, the preparation method of rubber gloves interleaving agent converted starch is as follows：
Step 1, pretreatment：The cornstarch of predetermined amount is weighed, is fitted into retort, addition water is dispersed with stirring into uniform
Starch slurry.The mass ratio of starch and water is 5: 6.Retort is moved into the water-bath with blender and is stirred, simultaneously will
The temperature that water-bath is warming up to starch slurry rises to 32 DEG C.
Step 2, crosslinking：The sodium hydroxide solution of 2.5%wt is added in the product obtained toward the step of pretreatment, to adjust
PH value is to 11.6.Epoxychloropropane is added in be reacted for 24 hours.Total dosage of epoxychloropropane is the 0.3% of starch on dry basis quality.
Step 3, dehydration washing：The step of to crosslinking, obtained product added in hydrochloric acid, adjusts pH value to after 6.2, is washed
After washing, being dehydrated, dry 5h, obtains converted starch finished product in 58 DEG C of drying box.
Comparative example two
In this comparative example, the preparation method of rubber gloves interleaving agent converted starch is as follows：
Step 1, pretreatment：The cornstarch of predetermined amount is weighed, is fitted into retort, addition water is dispersed with stirring into uniform
Starch slurry.The mass ratio of starch and water is 5: 6.Retort is moved into the water-bath with blender and is stirred, simultaneously will
The temperature that water-bath is warming up to starch slurry rises to 31 DEG C.
Step 2, crosslinking：The sodium hydroxide solution of 2.5%wt is added in the product obtained toward the step of pretreatment, to adjust
PH value is to 11.5.Epoxychloropropane is added in be reacted for 24 hours.Total dosage of epoxychloropropane is the 0.3% of starch on dry basis quality.
Step 3, dehydration washing：The step of to crosslinking, obtained product added in hydrochloric acid, adjusts pH value to after 6.1, is washed
After washing, being dehydrated, dry 4h, obtains converted starch finished product in 55 DEG C of drying box.
Comparative example three
In the present embodiment, the preparation method of rubber gloves interleaving agent converted starch is as follows：
Step 1, pretreatment：The cornstarch of predetermined amount is weighed, is fitted into retort, addition water is dispersed with stirring into uniform
Starch slurry.The mass ratio of starch and water is 4: 6.Retort is moved into the water-bath with blender and is stirred, simultaneously will
The temperature that water-bath is warming up to starch slurry rises to 30 DEG C.
Step 2, crosslinking：The sodium hydroxide solution of 2.5%wt is added in the product obtained toward the step of pretreatment, to adjust
PH value is to 11.5.It adds in epoxychloropropane and carries out reaction 20h.Total dosage of epoxychloropropane is the 0.3% of starch on dry basis quality.
Step 3, dehydration washing：The step of to crosslinking, obtained product added in hydrochloric acid, adjust pH value to after 6, washed,
After dehydration, dry 3.5h, obtains converted starch finished product in 52 DEG C of drying box.
For the starch degree of cross linking with swellbility there are linear relationship, linearly related degree reaches R2=0.898, swellbility is smaller, table
Show that the degree of cross linking is higher.By measuring settlement volume come the secondary indication starch degree of cross linking.By embodiment one to three and comparative example one to three
Obtained converted starch number consecutively is 1-6, carries out settlement volume test.
Settlement volume is tested：
Accurately weigh 0.5g absolute dried samples in 100ml beakers per a converted starch to above-mentioned, be made into 2% starch it is molten
Liquid.Beaker is placed in 82-85 DEG C of water-bath, is slightly stirred, keeps the temperature 2min, taking-up is cooled to room temperature.With two graduated centrifuge tubes
10ml paste liquid is poured into respectively, and 2min is centrifuged under 4000r/min rotating speeds, centrifuge tube is taken out, supernatant is poured into another 1 similary body
In long-pending centrifuge tube, settling volume is calculated.
Settlement volume (ml)=10-V, V is the volume of clear liquid.
1 settlement volume test result of table
| Number | 1 | 2 | 3 | 4 | 5 | 6 |
| Settlement volume (ml) | 1.6 | 1.1 | 1.4 | 1.9 | 2.2 | 1.7 |
As can be known from the above table, the settlement volume for the converted starch that the preparation method of embodiment obtains has been used compared with comparative example preparation side
The settlement volume for the converted starch that method obtains is small, show the crosslinking degree of the converted starch that the preparation method of embodiment obtains compared with
Height, better quality.The crosslinking journey to enhancing finished product respectively add in oxidation reaction before and after cross-linking reaction the step of is illustrated simultaneously
Degree has certain effect.
Use above specific case is illustrated the present invention, is only intended to help to understand the present invention, not limiting
The system present invention.For those skilled in the art, thought according to the invention can also be made several simple
It deduces, deform or replaces.
Claims (9)
1. a kind of preparation method of rubber gloves interleaving agent converted starch, which is characterized in that comprise the following steps：Starch is passed through
It after oxidation, adds in crosslinking agent and carries out cross-linking reaction, secondary oxidation is carried out to the mixed liquor that the cross-linking reaction obtains, is denatured
Starch.
2. the preparation method of rubber gloves interleaving agent converted starch according to claim 1, which is characterized in that the oxygen
The oxidant that change and/or secondary oxidation use is sodium hypochlorite, and dosage is the 0.5% of the starch on dry basis quality.
3. the preparation method of rubber gloves interleaving agent converted starch according to claim 2, which is characterized in that the friendship
Connection agent is epoxychloropropane, and dosage is the 0.3% of the starch on dry basis quality.
4. the preparation method of the rubber gloves interleaving agent converted starch according to claim 1 or 2 or 3, which is characterized in that
The specific steps of the preparation method include：
Oxidation：The starch slurry that the starch is configured in predefined conditions, after carrying out oxidation reaction with sodium hypochlorite, adds in
Sodium hydrogensulfite is reacted, dehydration washing；
Crosslinking：Under special reaction condition, added in the product obtained toward the step of oxidation by sodium hydroxide and epoxy chlorine
The aqueous slkali that propane mixes is reacted, and is warming up to specific temperature after a certain period of time, is carried out instead after adding in epoxychloropropane
Should, obtain mixed liquor；
Secondary oxidation：In predefined conditions, after the mixed liquor that the step of crosslinking obtains carries out oxidation reaction with sodium hypochlorite,
It adds in sodium hydrogensulfite to be reacted, dehydration washing.
5. the preparation method of rubber gloves interleaving agent converted starch according to claim 4, which is characterized in that the oxygen
The specific steps of change include：
The starch slurry that starch plus water are configured adjusts pH value to 9-10, and in heating water bath under conditions of 30-32 DEG C,
Oxidation reaction 1-3h is carried out with sodium hypochlorite；
The solution of sodium bisulfite for adding in 10%wt is reacted, dehydration washing.
6. the preparation method of rubber gloves interleaving agent converted starch according to claim 4, which is characterized in that the friendship
The specific steps of connection include：
2.5%wt sodium hydroxide solutions are added under special reaction condition, in the product obtained toward the step of oxidation to adjust
PH value is saved to 11.5-11.6, the epoxychloropropane that addition accounts for total dosage 1/3 carries out reaction 10-14h, is warming up to 50-52 DEG C,
Reaction 10-14h is carried out after adding in the epoxychloropropane of remaining dosage, obtains mixed liquor.
7. the preparation method of rubber gloves interleaving agent converted starch according to claim 4, which is characterized in that described two
The specific steps of secondary oxidation include：
The mixed liquor that the step of crosslinking is obtained adjusts pH value to 9-10, and in heating water bath under conditions of 30-32 DEG C,
Oxidation reaction 1-3h is carried out with sodium hypochlorite；
The solution of sodium bisulfite for adding in 10%wt is reacted.
8. the preparation method of rubber gloves interleaving agent converted starch according to claim 4, which is characterized in that described
After the step of secondary oxidation, further include：Hydrochloric acid is added in the product that the step of secondary oxidation obtains, adjusts pH value to 6-
It after 6.2, washed, be dehydrated, dried, obtain converted starch.
9. the preparation method of rubber gloves interleaving agent converted starch according to any one of claim 1-3, feature
It is, the starch is at least one of cornstarch, tapioca or potato starch.
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| CN101519456A (en) * | 2009-03-24 | 2009-09-02 | 东莞东美食品有限公司 | Method for preparing coating starch |
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| CN105968218A (en) * | 2016-06-30 | 2016-09-28 | 陈灼 | Preparation method of modified starch |
| CN106967178A (en) * | 2017-05-26 | 2017-07-21 | 相里海霞 | Preparation method of composite modified starch |
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|---|---|---|---|---|
| CN101519456A (en) * | 2009-03-24 | 2009-09-02 | 东莞东美食品有限公司 | Method for preparing coating starch |
| CN102827296A (en) * | 2012-08-29 | 2012-12-19 | 赵贵喜 | Method for producing compound modified starch |
| CN105968218A (en) * | 2016-06-30 | 2016-09-28 | 陈灼 | Preparation method of modified starch |
| CN106967178A (en) * | 2017-05-26 | 2017-07-21 | 相里海霞 | Preparation method of composite modified starch |
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