CN104910290A - Maleic-anhydride-modified polyethylene modified guar gum and preparation method thereof - Google Patents
Maleic-anhydride-modified polyethylene modified guar gum and preparation method thereof Download PDFInfo
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- CN104910290A CN104910290A CN201510348932.XA CN201510348932A CN104910290A CN 104910290 A CN104910290 A CN 104910290A CN 201510348932 A CN201510348932 A CN 201510348932A CN 104910290 A CN104910290 A CN 104910290A
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Abstract
The invention relates to a modified guar gum and a preparation method thereof, particularly a maleic-anhydride-modified polyethylene modified guar gum and a preparation method thereof. The method uses high-polymer acid for esterification modification of guar gum instead of low-polymer acid, thereby enhancing the water solubility of the guar gum, enhancing the viscosity of the guar gum through the high-polymer winding, and further satisfying the requirements for viscosity and water solubility in paper manufacturing industry.
Description
Technical field
The present invention relates to a kind of modified guar and preparation method thereof, particularly relate to a kind of maleic anhydride modified PE modified guar gum and preparation method thereof.
Background technology
Maleic anhydride modified polyethylene (Zemac) is on polyethylene molecular chain, chemically modify a kind of macromole acid anhydrides that a small amount of maleic anhydride obtains, and the facile hydrolysis in water of the maleic anhydride in Zemac becomes two carboxyls.Guar gum (guar gum) is a kind of natural galactomannan gum, from originate in the ground such as India, Pakistan guar seed endosperm extract and obtain.Guar gum has good water-soluble and thickening property, but its water insoluble matter content is higher, and hydration rate is comparatively slow, needs to carry out modification to the former powder of guar gum, to meet the needs that it applies in paper industry.Different from the mode of guar gum Cheng Jian according to substituting group, guar gum modification can be divided into etherificate guar gum, oxidized guar, and esterification guar gum etc.Esterification guar gum is the product that the carbonyl in guar gum is obtained by mineral acid or esterifying organic acid, common are the small molecules acid such as sulfuric ester, phosphoric acid ester, acetic ester, phthalic ester and sulphonate, in prior art, have no the report adopting polymer acid to carry out guar gum modification.
Summary of the invention
The present invention is for solving the aforementioned problems in the prior, a kind of maleic anhydride modified PE modified guar gum and preparation method thereof is proposed, polymer acid is used to be used for guar gum esterification modification, not only can improve the water-soluble of guar gum, can also be wound around by macromole and improve its viscosity simultaneously, meet in paper industry viscosity and water miscible requirement.
The invention provides a kind of preparation method of maleic anhydride modified PE modified guar gum, comprise the following steps:
Step 1: under the condition with shielding gas protection, the former powder of guar gum that the kneader to sample introduction of can spraying adds and dispersion agent, and fully stir, make both mix;
Step 2: in reaction vessel, sprays into the aqueous sodium hydroxide solution that massfraction is 1% ~ 5%, is warmed up to 30 DEG C-50 DEG C, alkalizes 0.5 ~ 1.5 hour;
Step 3: add maleic anhydride modified polyethylene and mix, isothermal reaction 1 ~ 3 hour, is cooled to room temperature, adds glidant;
Step 4: drying, pulverizing, obtained maleic anhydride modified PE modified guar gum.
For optimizing technique scheme, the concrete measure taked also comprises:
The former powder of guar gum of above-mentioned use is defined as the former powder of guar gum that 200 order sieving rates are greater than 90%.
The mass ratio of above-mentioned dispersion agent and the former powder of guar gum is 1.0 ~ 5.0:100.
Above-mentioned dispersion agent is any one or a few in sodium-chlor, sodium sulfate, sodium pyrosulfate, Repone K.
The mass ratio of above-mentioned aqueous sodium hydroxide solution quality and the former powder of guar gum is 0.5 ~ 2.0:100.
Mass ratio 3.5 ~ the 8.0:100 of above-mentioned maleic anhydride modified polyethylene and the former powder of guar gum.
The mass ratio of above-mentioned glidant and the former powder of described guar gum is 1.0 ~ 5.0:100.
Above-mentioned glidant is any one or a few of wilkinite, colloidal silicon and polymine.
Above-mentioned shielding gas is nitrogen.
Present invention also offers a kind of maleic anhydride modified PE modified guar gum prepared by above-mentioned preparation method.
The present invention adopts technique scheme, compared with small molecules acid, polymer acid is used for guar gum esterification modification, not only can improve the water-soluble of guar gum, its viscosity can also be improved by macromolecular winding simultaneously, meet in paper industry viscosity and water miscible requirement.
Embodiment
The invention provides a kind of preparation method of maleic anhydride modified PE modified guar gum, it is characterized in that comprising the following steps:
Step 1: under the condition with shielding gas protection, the former powder of guar gum that the kneader to sample introduction of can spraying adds and dispersion agent, and fully stir, make both mix;
Step 2: in reaction vessel, sprays into the aqueous sodium hydroxide solution that massfraction is 1% ~ 5%, is warmed up to 30 DEG C-50 DEG C, alkalizes 0.5 ~ 1.5 hour;
Step 3: add maleic anhydride modified polyethylene and mix, isothermal reaction 1 ~ 3 hour, is cooled to room temperature, adds glidant;
Step 4: drying, pulverizing, obtained maleic anhydride modified PE modified guar gum.
Carry out detailed and concrete introduction below by specific embodiment to the present invention, to make better to understand the present invention, but following embodiment does not limit the scope of the invention.
Embodiment 1
1. nitrogen as protection gas condition under, in the kneader of sample introduction of can spraying, add the former powder of 200g guar gum, add 3.0g sodium-chlor as dispersion agent, and fully stir, make it mix.
2. in reaction vessel, spray into the aqueous sodium hydroxide solution that 2g massfraction is 3%, be warmed up to 40 DEG C, alkalize 1.0 hours.
3. add 10.0g Zemac again and mix, certain 2 hours of anti-isothermal reaction, cool to room temperature, adds 4.0g wilkinite glidant;
4. drying, pulverizing, obtained maleic anhydride modified PE modified guar gum.
Embodiment 2
1. nitrogen as protection gas condition under, in the kneader of sample introduction of can spraying, add the former powder of 200g guar gum, add 3.0g sodium sulfate as dispersion agent, and fully stir, make it mix.
2. in reaction vessel, spray into the aqueous sodium hydroxide solution that 2g massfraction is 3%, be warmed up to 40 DEG C, alkalize 1.0 hours.
3. add 10.0g Zemac again and mix, certain 2 hours of anti-isothermal reaction, cool to room temperature, adds 4.0g colloidal silicon glidant;
4. drying, pulverizing, obtained maleic anhydride modified PE modified guar gum.
Embodiment 3
1. nitrogen as protection gas condition under, in the kneader of sample introduction of can spraying, add the former powder of 200g guar gum, add 3.0g sodium-chlor as dispersion agent, and fully stir, make it mix.
2. in reaction vessel, spray into the aqueous sodium hydroxide solution that 3.5g massfraction is 3%, be warmed up to 50 DEG C, alkalize 0.5 hour.
3. add 12.0g Zemac again and mix, certain 2 hours of anti-isothermal reaction, cool to room temperature, adding the agent of 4.0g wilkinite stream;
4. drying, pulverizing, obtained maleic anhydride modified PE modified guar gum.
Embodiment 4
1. nitrogen as protection gas condition under, in the kneader of sample introduction of can spraying, add the former powder of 200g guar gum, add 3.0g sodium-chlor as dispersion agent, and fully stir, make it mix.
2. in reaction vessel, spray into the aqueous sodium hydroxide solution that 1.5g massfraction is 3%, be warmed up to 40 DEG C, alkalize 0.5 hour.
3. add 14.0g Zemac again and mix, certain 3 hours of anti-isothermal reaction, cool to room temperature, adding the agent of 3.0g wilkinite stream;
4. drying, pulverizing, obtained maleic anhydride modified PE modified guar gum.
Adopt the maleic anhydride modified PE modified guar gum that preparation method of the present invention obtains, not only can improve the water-soluble of guar gum, its viscosity can also be improved by macromolecular winding simultaneously, meet in paper industry viscosity and water miscible requirement.
Be described in detail specific embodiments of the invention above, but it is just as example, the present invention is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the present invention is carried out and substituting also all among category of the present invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should contain within the scope of the invention.
Claims (10)
1. a preparation method for maleic anhydride modified PE modified guar gum, is characterized in that comprising the following steps:
Step 1: under the condition with shielding gas protection, the former powder of guar gum that the kneader to sample introduction of can spraying adds and dispersion agent, and fully stir, make both mix;
Step 2: in reaction vessel, sprays into the aqueous sodium hydroxide solution that massfraction is 1% ~ 5%, is warmed up to 30 DEG C-50 DEG C, alkalizes 0.5 ~ 1.5 hour;
Step 3: add maleic anhydride modified polyethylene and mix, isothermal reaction 1 ~ 3 hour, is cooled to room temperature, adds glidant;
Step 4: drying, pulverizing, obtained maleic anhydride modified PE modified guar gum.
2. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, is characterized in that, described guar gum former powder 200 order sieving rate is greater than 90%.
3. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, is characterized in that, the mass ratio of described dispersion agent and the former powder of described guar gum is 1.0 ~ 5.0:100.
4. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, is characterized in that, described dispersion agent is any one or a few in sodium-chlor, sodium sulfate, sodium pyrosulfate, Repone K.
5. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, is characterized in that, the mass ratio of described aqueous sodium hydroxide solution quality and the former powder of guar gum is 0.5 ~ 2.0:100.
6. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, is characterized in that, the mass ratio 3.5 ~ 8.0:100 of described maleic anhydride modified polyethylene and the former powder of guar gum.
7. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, is characterized in that, the mass ratio of described glidant and the former powder of described guar gum is 1.0 ~ 5.0:100.
8. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, is characterized in that, described glidant is any one or a few of wilkinite, colloidal silicon and polymine.
9. the preparation method of a kind of maleic anhydride modified PE modified guar gum according to claim 1, it is characterized in that, described shielding gas is nitrogen.
10. the maleic anhydride modified PE modified guar gum prepared of the preparation method according to claim 1 ~ 9 any one.
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| CN107319399A (en) * | 2017-07-25 | 2017-11-07 | 安徽雨杏食品有限公司 | A kind of sauce halogen flesh of fish preparation method in good taste |
| CN107318950A (en) * | 2017-07-25 | 2017-11-07 | 安徽雨杏食品有限公司 | A kind of preparation method of sauce halogen fish product |
| CN116904165A (en) * | 2023-07-21 | 2023-10-20 | 国控百博有限公司 | Environment-friendly dust inhibitor and application thereof in mine |
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| CN116904165B (en) * | 2023-07-21 | 2024-01-26 | 国控百博有限公司 | Environment-friendly dust inhibitor and application thereof in mine |
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Application publication date: 20150916 |