CN108691245B - Preparation method of high-electronegativity AKD (alkyl ketene dimer) internal sizing agent - Google Patents
Preparation method of high-electronegativity AKD (alkyl ketene dimer) internal sizing agent Download PDFInfo
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- CN108691245B CN108691245B CN201810515705.5A CN201810515705A CN108691245B CN 108691245 B CN108691245 B CN 108691245B CN 201810515705 A CN201810515705 A CN 201810515705A CN 108691245 B CN108691245 B CN 108691245B
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- 238000004513 sizing Methods 0.000 title claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- -1 alkyl ketene dimer Chemical compound 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000008367 deionised water Substances 0.000 claims abstract description 26
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 239000004593 Epoxy Substances 0.000 claims abstract description 18
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 18
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 18
- 229920000570 polyether Polymers 0.000 claims abstract description 18
- 239000000178 monomer Substances 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000003960 organic solvent Substances 0.000 claims abstract description 14
- 229920000768 polyamine Polymers 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 13
- 125000002091 cationic group Chemical group 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 4
- JOLQKTGDSGKSKJ-UHFFFAOYSA-N 1-ethoxypropan-2-ol Chemical compound CCOCC(C)O JOLQKTGDSGKSKJ-UHFFFAOYSA-N 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 3
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 3
- DJCYDDALXPHSHR-UHFFFAOYSA-N 2-(2-propoxyethoxy)ethanol Chemical compound CCCOCCOCCO DJCYDDALXPHSHR-UHFFFAOYSA-N 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 3
- YEYKMVJDLWJFOA-UHFFFAOYSA-N 2-propoxyethanol Chemical compound CCCOCCO YEYKMVJDLWJFOA-UHFFFAOYSA-N 0.000 claims description 3
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 3
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 claims description 3
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims description 3
- 229960001124 trientine Drugs 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 14
- 239000000835 fiber Substances 0.000 abstract description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 150000003863 ammonium salts Chemical class 0.000 abstract description 2
- 125000000129 anionic group Chemical group 0.000 description 5
- 125000001033 ether group Chemical group 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000011128 aluminium sulphate Nutrition 0.000 description 1
- 239000001164 aluminium sulphate Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/17—Ketenes, e.g. ketene dimers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/53—Polyethers; Polyesters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention discloses a preparation method of a high-electropositivity alkyl ketene dimer internal sizing agent. Adding a certain amount of polyamine monomer and organic solvent into a reactor, then dropwise adding a certain amount of alkyl epoxy polyether into the system, adding a certain amount of AKD raw powder at one time, finally adding a certain amount of deionized water, adjusting the pH value to 3-4, cooling and discharging to obtain the high-cationic-property AKD emulsifier called as component A. And then mixing the AKD with the component A according to a certain proportion, heating the system to 60-70 ℃, continuing to preserve heat for 10min after the AKD is completely melted, then adding a certain amount of deionized water, and rapidly cooling to obtain the high-positive-electricity AKD internal sizing agent. The internal sizing agent prepared by the invention has high positive electricity property and excellent retention property, and simultaneously, the existence of a large amount of ammonium salt can promote the reaction of AKD and the hydroxyl on the surface of the fiber, so that the water resistance can be formed efficiently and rapidly under the condition of a small amount of application, and the performance of paper is greatly improved.
Description
Technical Field
The invention relates to a preparation method of a paper pulp internal sizing agent, in particular to a preparation method of a high-cationic-property AKD pulp internal sizing agent.
Background
In recent years, with the increasing of environmental requirements, the treatment and discharge requirements of papermaking wastewater, waste residue and the like are continuously improved, and simultaneously with the use of a large amount of coated and sized broke, various types of deinked waste paper and high-yield pulp and the improvement of the circulation sealing degree of white water of a paper machine, the concentration of interference anionic impurities in the wet part of the paper machine is higher, the damage to the operation of the wet part of the paper machine is larger, and the effects of some cationic additives such as PAE wet strength agents, cationic AKD pulp internal sizing agents, ASA pulp internal sizing agents and the like are poorer. The problem of anionic impurities (anionicfish) becomes more pronounced especially when aluminium sulphate is no longer added to the pulp as a size fixing agent following the conversion of the paper to an alkaline system. At present, cation AKD emulsion has weak positive electricity, the sizing effect begins to decline, and the requirement of industry on the water resistance of paper is difficult to meet.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of an AKD internal sizing agent with high positive electric property. The internal sizing agent prepared by the invention has high positive electricity property and excellent retention property, and simultaneously, the existence of a large amount of ammonium salt can promote the reaction of AKD and the hydroxyl on the surface of the fiber, so that the water resistance can be formed efficiently and rapidly under the condition of a small amount of application, and the performance of paper is greatly improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a preparation method of a high-cationic-property AKD internal sizing agent comprises the following steps:
adding 10-40 parts of polyamine monomer and 5-15 parts of organic solvent into a reactor, stirring and simultaneously heating to 80-95 ℃, then dropwise adding 20-50 parts of alkyl epoxy polyether into the system, and then continuing to perform heat preservation reaction; then 3-10 parts of AKD raw powder is added at one time, and the reaction is continued for 2 hours; finally, adding deionized water, adjusting the pH value to 3-4, cooling and discharging to obtain the high-electronegativity AKD emulsifier;
and then mixing the AKD with the high-cationic-property AKD emulsifier, heating the system to 60-70 ℃, continuing to preserve heat after the AKD is completely melted, adding deionized water, dispersing at a high speed for 10-20min, and then cooling to obtain the high-cationic-property AKD internal sizing agent.
The polyamine monomer is one or a mixture of more of diethylenetriamine, triethylene tetramine and tetraethylene pentamine in any proportion.
The organic solvent is one or a mixture of more of propylene glycol methyl ether, propylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol propyl ether, diethylene glycol butyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether and ethylene glycol butyl ether in any proportion.
The alkyl epoxy polyether has an alkyl chain length of 12, 14, 16 or 18 carbons.
The polymerization degree of the polyoxyethylene ether chain segment is 10, 20, 30 or 40.
The polymerization degree of the polyoxypropylene ether chain segment is one or a mixture of two of 5 and 10 in any proportion.
The alkyl ketene dimer is a mixture of one or more of alkyl carbon chain lengths of 14, 16 and 18 in any proportion.
And then adding the mixture into deionized water, wherein the solid content of the system is 20-25% by adding the deionized water.
The dropping time of the alkyl epoxy polyether is 1-3 hours, and then the heat preservation is continued for 3-5 hours.
The mixing mass ratio of the AKD to the high-electronegativity AKD emulsifier is 100: (10-20).
Compared with the prior art, the invention has the following advantages:
the key point of the invention is that proper amino monomer and end-capped alkyl epoxy polyether are selected to react in advance under anhydrous condition to prepare alkyl epoxy polyether modified amino monomer, and the amino monomer is reacted with AKD under anhydrous condition to prepare high-cationic AKD emulsifier, and the emulsifier has high cationic property due to containing a large amount of primary and secondary amino groups, so that the anionic trash of a papermaking wet part can be partially eliminated, the adsorption of emulsified AKD liquid drops on the surface of anionic fiber is improved, the retention rate of AKD is improved, and the sizing effect is improved. In the paper drying process, the high cationic emulsifier can promote the ring opening of AKD, accelerate the reaction with fiber hydroxyl, shorten the curing time, improve the production efficiency and reduce the false sizing phenomenon. The product of the invention has the advantages of high electropositivity, capability of overcoming anionic garbage and the like. Meanwhile, the retention performance of AKD can be improved through high electronegativity, the ring opening of AKD can be promoted in the paper drying process, the reaction with hydroxyl on molecular chain segments such as paper fiber and starch is accelerated, the curing period is shortened, and the indexes such as water resistance of paper can be greatly improved.
Detailed Description
The present invention will be described in further detail with reference to specific examples below: (in parts by weight)
A preparation method of a high-electropositivity alkyl ketene dimer (AKD, the same below) internal sizing agent comprises the following preparation processes:
adding 10-40 parts of polyamine monomer and 5-15 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 80-95 ℃, then dropwise adding 20-50 parts of alkyl epoxy polyether into the system for 1-3 hours, and then continuously preserving heat for 3-5 hours. Finally, 3-10 parts of AKD raw powder with a certain amount is added at one time, and the reaction is continued for 2 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 3-4, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to the AKD raw powder: the component A is 100: 10, mixing, heating the system to 60-70 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 20-25%, dispersing at a high speed (the rotating speed is 1000-2000 r/min) for 10-20min, and then rapidly cooling to obtain the high-cationic-property AKD sizing agent.
Wherein, the polyamine monomer is one or a mixture of more of diethylenetriamine, triethylene tetramine and tetraethylene pentamine in any proportion. The organic solvent is one or a mixture of more of propylene glycol methyl ether, propylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol propyl ether, diethylene glycol butyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether and ethylene glycol butyl ether in any proportion. The alkyl epoxy polyether is one or a mixture of a plurality of random proportions, wherein the chain length of the alkyl chain is 12, 14, 16 and 18 carbons, the polymerization degree of a polyoxyethylene ether chain segment is 10, 20, 30 and 40, and the polymerization degree of a polyoxypropylene ether chain segment is 5 and 10. The alkyl ketene dimer is a mixture of one or more of alkyl carbon chain lengths of 14, 16 and 18 in any proportion.
Example 1:
adding 15 parts of polyamine monomer and 5 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 80 ℃, then dropwise adding 22 parts of alkyl epoxy polyether into the system for 1 hour, and then continuously preserving heat for 3.5 hours. Finally, adding a certain amount of 4.5 parts of AKD raw powder at one time, and continuing to react for 2 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 3, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to AKD: the component A is 100: 10, mixing, heating the system to 60 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 20%, dispersing at a high speed for 10min, and then rapidly cooling to obtain the high-cationic-property AKD internal sizing agent.
Example 2:
adding 37 parts of polyamine monomer and 15 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 85 ℃, then dropwise adding 36 parts of alkyl epoxy polyether into the system for 1.5 hours, and then continuously preserving heat for 5 hours. Finally, a certain amount of 7.5 parts of AKD raw powder is added at one time, and the reaction is continued for 2 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 3, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to AKD: the component A is 100: 16, heating the system to 68 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 25%, dispersing at a high speed for 10min, and then rapidly cooling to obtain the high-cationic-property AKD internal sizing agent.
Example 3:
adding 15 parts of polyamine monomer and 5 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 80 ℃, then dropwise adding 22 parts of alkyl epoxy polyether into the system for 1 hour, and then continuously preserving heat for 3.5 hours. Finally, adding a certain amount of 4.5 parts of AKD raw powder at one time, and continuing to react for 2 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 3.5, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to AKD: the component A is 100: 13, heating the system to 65 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 22%, dispersing at a high speed for 10min, and then rapidly cooling to obtain the high-cationic-property AKD internal sizing agent.
Example 4:
adding 29 parts of polyamine monomer and 10 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 90 ℃, then dropwise adding 48 parts of alkyl epoxy polyether into the system for 2 hours, and then continuously preserving heat for 3 hours. Finally, a certain amount of 8.5 parts of AKD raw powder is added at one time, and the reaction is continued for 2.5 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 4, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to AKD: the component A is 100: 18, heating the system to 60 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 24%, dispersing at a high speed for 10min, and then rapidly cooling to obtain the high-cationic-property AKD internal sizing agent.
Example 5:
adding 25 parts of polyamine monomer and 9 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 85 ℃, then dropwise adding 41 parts of alkyl epoxy polyether into the system for 2 hours, and then continuously preserving heat for 4 hours. Finally, 9 parts of AKD raw powder with a certain amount is added at one time, and the reaction is continued for 2 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 3.8, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to AKD: the component A is 100: and 20, mixing, heating the system to 70 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 23%, dispersing at a high speed for 10min, and then rapidly cooling to obtain the high-cationic-property AKD internal sizing agent.
The application experiment of the high-cationic-property AKD internal sizing agent prepared under different example conditions on paper is shown in the following table 1:
TABLE 1
| Examples of the invention | Addition amount (kg/ton paper) | Degree of sizing(s) |
| Commercially available AKD emulsion from A | 10 | 45 |
| Example 1 | 10 | 65 |
| Example 2 | 10 | 71 |
| Example 3 | 10 | 68 |
| Example 4 | 10 | 75 |
| Example 5 | 10 | 61 |
As can be seen from table 1 above, the high cationic AKD internal sizing agent prepared in the examples of the present application has better indexes than the existing commercial AKD emulsion.
Example 6:
adding 40 parts of polyamine monomer and 15 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 95 ℃, then dropwise adding 50 parts of alkyl epoxy polyether into the system for 2 hours, and then continuously preserving heat for 4 hours. Finally, 10 parts of AKD raw powder with a certain amount is added at one time, and the reaction is continued for 2 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 4.0, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to AKD: the component A is 100: 15, heating the system to 65 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 23%, dispersing at a high speed for 10min, and then rapidly cooling to obtain the high-positive-electricity AKD internal sizing agent.
Example 7:
adding 10 parts of polyamine monomer and 5 parts of organic solvent into a reactor, starting stirring and simultaneously heating to 80 ℃, then dropwise adding 20 parts of alkyl epoxy polyether into the system for 2 hours, and then continuously preserving heat for 4 hours. Finally, 3 parts of AKD raw powder with a certain amount is added at one time, and the reaction is continued for 2 hours. And finally, adding a certain amount of deionized water, adjusting the pH value to 3.0, cooling and discharging to obtain the high-electronegativity AKD emulsifier which is called as a component A. Then, according to AKD: the component A is 100: 12, heating the system to 70 ℃, continuing to preserve heat for 10min after AKD is completely melted, then adding a certain amount of deionized water to keep the solid content of the system at 23%, dispersing at a high speed for 10min, and then rapidly cooling to obtain the high-cationic-property AKD internal sizing agent.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications made according to the contents of the present invention should fall within the technical scope of the present invention.
Claims (8)
1. A preparation method of the high-cationic-property AKD internal sizing agent is characterized by comprising the following steps:
adding 10-40 parts of polyamine monomer and 5-15 parts of organic solvent into a reactor, stirring and simultaneously heating to 80-95 ℃, then dropwise adding 20-50 parts of alkyl epoxy polyether into the system, and then continuing to perform heat preservation reaction; then 3-10 parts of AKD raw powder is added at one time, and the reaction is continued for 2 hours; finally, adding deionized water, adjusting the pH value to 3-4, cooling and discharging to obtain the high-electronegativity AKD emulsifier;
and then mixing the AKD with the high-cationic-property AKD emulsifier, heating the system to 60-70 ℃, continuing to preserve heat after the AKD is completely melted, adding deionized water, dispersing at a high speed for 10-20min, and then cooling to obtain the high-cationic-property AKD internal sizing agent.
2. The method for preparing the high cationic AKD internal sizing agent according to claim 1, wherein the method comprises the following steps: the polyamine monomer is one or a mixture of more of diethylenetriamine, triethylene tetramine and tetraethylene pentamine in any proportion.
3. The method for preparing the high cationic AKD internal sizing agent according to claim 1, wherein the method comprises the following steps: the organic solvent is one or a mixture of more of propylene glycol methyl ether, propylene glycol ethyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol propyl ether, diethylene glycol butyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether and ethylene glycol butyl ether in any proportion.
4. The method for preparing the high cationic AKD internal sizing agent according to claim 1, wherein the method comprises the following steps: the alkyl epoxy polyether has an alkyl chain length of 12, 14, 16 or 18 carbons.
5. The method for preparing the high cationic AKD internal sizing agent according to claim 1, wherein the method comprises the following steps: the alkyl ketene dimer is a mixture of one or more of alkyl carbon chain lengths of 14, 16 and 18 in any proportion.
6. The method for preparing the high cationic AKD internal sizing agent according to claim 1, wherein the method comprises the following steps: and then adding the mixture into deionized water, wherein the solid content of the system is 20-25% by adding the deionized water.
7. The method for preparing the high cationic AKD internal sizing agent according to claim 1, wherein the method comprises the following steps: the dropping time of the alkyl epoxy polyether is 1-3 hours, and then the heat preservation is continued for 3-5 hours.
8. The method for preparing the high cationic AKD internal sizing agent according to claim 1, wherein the method comprises the following steps: the mixing mass ratio of the AKD to the high-electronegativity AKD emulsifier is 100: (10-20).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0220941A1 (en) * | 1985-10-23 | 1987-05-06 | Albright & Wilson Limited | Paper sizing composition |
| CN1346417A (en) * | 1999-04-15 | 2002-04-24 | 阿克佐诺贝尔公司 | Sizing composition |
| JP2004225212A (en) * | 2003-01-24 | 2004-08-12 | Nof Corp | Sizing composition |
| CN101096829A (en) * | 2007-07-13 | 2008-01-02 | 天津科技大学 | A kind of cationic alkyl ketene dimer sizing agent and preparation method thereof |
| CN104479125A (en) * | 2014-12-17 | 2015-04-01 | 沈阳新意石油化工厂 | Synthesis method and application of oleic acid-polyethylene polyamine polyether |
-
2018
- 2018-05-25 CN CN201810515705.5A patent/CN108691245B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0220941A1 (en) * | 1985-10-23 | 1987-05-06 | Albright & Wilson Limited | Paper sizing composition |
| CN1346417A (en) * | 1999-04-15 | 2002-04-24 | 阿克佐诺贝尔公司 | Sizing composition |
| JP2004225212A (en) * | 2003-01-24 | 2004-08-12 | Nof Corp | Sizing composition |
| CN101096829A (en) * | 2007-07-13 | 2008-01-02 | 天津科技大学 | A kind of cationic alkyl ketene dimer sizing agent and preparation method thereof |
| CN104479125A (en) * | 2014-12-17 | 2015-04-01 | 沈阳新意石油化工厂 | Synthesis method and application of oleic acid-polyethylene polyamine polyether |
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