CN108149516A - A kind of paper or paperboard grade (stock) sizing agent and preparation method thereof - Google Patents
A kind of paper or paperboard grade (stock) sizing agent and preparation method thereof Download PDFInfo
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- CN108149516A CN108149516A CN201711406235.0A CN201711406235A CN108149516A CN 108149516 A CN108149516 A CN 108149516A CN 201711406235 A CN201711406235 A CN 201711406235A CN 108149516 A CN108149516 A CN 108149516A
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- China
- Prior art keywords
- sizing agent
- monomer
- paper
- parts
- methacrylate
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/12—Monomers containing a branched unsaturated aliphatic radical or a ring substituted by an alkyl radical
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The invention discloses a kind of paper or paperboard grade (stock) sizing agent and preparation method thereof, the component of sizing agent is as follows：(methyl) styrene, (methyl) acrylic ester monomer, cross-linking monomer, emulsifier, initiator, dispersant, buffer, neutralizer, cationic monomer, deionized water.The Cypres raw material environmental protection of the present invention, source is wide, and synthesis technology is simple, and the reaction mechanism mechanism of reaction is relatively short, and manufacturing cost is low, and sizing agent obtained has convenient viscosity, preferable stability and average grain diameter smaller, has extremely strong film forming；Sizing agent of the present invention is used for paper top sizing, has the characteristics that preferable surface strength and water-resistance.The ring crush intensity of corrugated paper and corrugated board can be increased substantially in the case where sizing agent dosage is constant by being used in compounding with oxidized starch, reduce cardboard grammes per square metre.
Description
Technical field
The present invention relates to pulp technology for making paper, more particularly, to a kind of paper or paperboard grade (stock) sizing agent and preparation method thereof.
Background technology
To be cost-effective, papermaking at present replaces wood pulp using waste paper, but into the intensity difference of paper, and hygroscopicity value is high.And cardboard
Developing direction just develops from high grammes per square metre to low gram weight and high strength degree, and since internal sizing effect is bad, paper quality is unstable, and uses
Amount is big, and systemic contamination is difficult to control.Nowadays, the manufacturer of boxboard and fluting medium using top sizing carry out improve paper and
The technique of paper board strength becomes fashion trend.
Top sizing is an important procedure in paper or board making process, is usually located at the drying portion end of paper machine
End makes paper spray one layer of glue when not being completely dried and but having certain intensity, through subsequent drying in paper and cardboard table
Face forms one layer of glued membrane, so as to achieve the purpose that change paper and paperboard surface performance.Its requirement is as follows：(1) curing speed is fast (2)
It is good to significantly improve surface strength of paper (3) water repelling property.
Styrene-acrylic emulsion synthesis and preparation process is simple and environmentally-friendly.There is preferable film forming and blotting with its surface treated paper
Property.It is preferable with the affinity of fiber since molecular structure introduces active group, conventional surface sizing agent can be solved to fiber
Affine force difference causes paper to form a film the phenomenon that easily rupturable in the drying process.
As paper industry continues to develop, the requirement to Cypres is higher and higher, and present styrene-acrylic emulsion surface is applied
Although jelly can have the function that improve paper and cardboard ring crush intensity, conventional sizing agent dosage is big, of high cost, and adds in being formulated
Enter a large amount of dispersants and emulsifier, be unfavorable for environmental protection and water-resistance can be reduced to a certain extent, there are Moisture Regain, and
Curing speed needs to improve.
Invention content
In view of the above-mentioned problems existing in the prior art, this application provides a kind of paper or paperboard grade (stock) sizing agent and its preparations
Method.The present invention can effectively improve sizing efficiency, reduce and be glued cost, to paper and cardboard after this sizing agent and oxidized starch compounding
Top sizing can increase substantially paper and cardboard ring crush intensity, and surface strength, solution curing speed is slow, storage a period of time is returned
The problem of damp.
Technical scheme is as follows：
A kind of paper or paperboard grade (stock) sizing agent, are made of the raw material of following parts by weight：
20-32 parts of 85-96 parts of styrene or methyl styrene, acrylic ester monomer or methacrylate-based monomer,
2-8 parts of cross-linking monomer, 0.5-1 parts of the emulsifier aqueous solution of a concentration of 20wt%, the initiator solution 1- of a concentration of 15wt%
1.5 parts, 10-25 parts of dispersant, 1-5 parts of buffer, 1-5 parts of neutralizer, 2-6 parts of cationic monomer, 500-630 parts of water.
Present invention also provides the preparation methods of the paper or paperboard grade (stock) sizing agent, include the following steps：
By styrene or methyl styrene, acrylic ester monomer or methacrylate-based monomer, cross-linking monomer, emulsification
Agent, initiator, dispersant, buffer, neutralizer, cationic monomer and water add in reaction vessel, and inert gas drives oxygen,
Free-radical emulsion polymerization is carried out under steam heating condition, reaction obtains sizing agent.
Preferably, the acrylic ester monomer or methacrylate-based monomer are methyl methacrylate, methyl-prop
It is one or more mixed in olefin(e) acid ethyl ester, hydroxyethyl methacrylate, methyl acrylate, ethyl acrylate, hydroxy-ethyl acrylate
It closes；
The cross-linking monomer is hydroxypropyl acrylate, hydroxy propyl methacrylate, acrylamide, Methacrylamide, N-
Hydroxypropyl acrylamide, double acrylic acid glycol esters, acrylate, aminoethyl methacrylate, acrylic-amino propyl ester,
One or more mixing in methacrylic acid amino propyl ester, dimethyl m-isopropenyl phenyl isocyanate, divinylbenzene；
The emulsifier is cationic surfactant, and the cationic surfactant is selected from C12-18Alkyl polyoxyethylene
(n) one or more mixing in trimethyl ammonium chloride, wherein n=5-20；
The initiator is potassium peroxydisulfate, sodium peroxydisulfate, ammonium persulfate, benzoyl peroxide, lauroyl peroxide, peroxide
Change any one in t-butyl perbenzoate, two NSC 18620 hydrochlorate of azo；
The dispersant is gelatin, and the average molecular weight of the gelatin is 10000-100000；
The buffer is sodium bicarbonate；
The neutralizer is ammonium hydroxide；
The cationic monomer is selected from dimethylaminoethyl acrylate monochloro methane quaternary ammonium, methacrylic acid acyloxyethyl three
One or more mixing in ammonio methacrylate or diallyldimethylammonium chloride；
The water is tap water or deionized water.
Preferably, the inert gas is any one of helium, argon gas, nitrogen.
Preferably, the temperature that free-radical emulsion polymerization is carried out under steam heating condition is 85-90 DEG C, the reaction time
It is 1.5-5 hours.
Preferably, the pH of the sizing agent be 2-6, solid content 35-50%, average grain diameter 40nm-50nm, cationic degree
0.02-0.2。
Herein described sizing agent is used for the surface treatment of corrugated paper, cardboard or art post paperboard.
Herein described sizing agent is with oxidized starch compounding for the bonding of corrugated board.
The present invention is beneficial to be had technical effect that：
The sizing agent of the present invention, the surface treatment available for corrugated paper, cardboard or art post paperboard.The sizing agent of the present invention contains admittedly
Amount is higher, and water-resistance is preferable, can be with oxidized starch with 1:7~9 mass ratio compounding is used for the bonding of corrugated board, so as to expand
Its application range.
The addition of cross-linking monomer of the present invention not only accelerates curing speed, but also continuous because adding in formation after cross-linking monomer
Fine and close film layer, is substantially reduced water imbibition, has the function that prevent from getting damp.The addition of buffer and neutralizer changes system
PH value, can be with fiber negative electrical charge directly in conjunction with forming fine and close film layer in fiber, improve sizing efficiency after sizing.Meanwhile with
When size-press starch is used in compounding, it can be good at being crosslinked, so as to improve the film-formation result of starch.
Sizing agent of the present invention is dispersant using natural polymer gelatin, and green pollution-free can be reduced and is produced into
This, while the stability of system can be significantly improved.Sizing agent of the present invention greatly reduces the use of emulsifier, sends out in the application
Existing initiator type, different initiator amounts are larger to cationic polymer emulsion grain size and Size Distribution, so as to drop
Its low influence to product improves the water-resistance of sizing agent.By the addition of buffer and neutralizer, be conducive to enhance lotion
Positive charge and emulsifying capacity, improve emulsion intercalation method, change the particle diameter distribution and Average Particle Diameters of lotion.The present invention applies
Jelly average grain diameter 40nm-50nm, curing speed are fast.
Compared with the phenylpropyl surface sizing agent of traditional Starch synthesis, the good film-forming property of sizing agent of the present invention, stability is high,
While the preferable water-resistance of paper and physical strength is assigned, sizing cost can be substantially reduced.The product and oxidized starch one
Compounding is played to corrugated paper and paperboard surface sizing and the bonding of cardboard, the Cobb values of corrugated paper can not only be improved, accelerate curing
Speed prevents Moisture Regain, and the most important ring crush intensity that can improve paper and cardboard, reduces paper grammes per square metre, adapts to present
The direction of high-intensity low-gramweight cardboard development.
The Cypres raw material environmental protection of the present invention, source is wide, and synthesis technology is simple, and the reaction mechanism mechanism of reaction is relatively short, prepares
At low cost, sizing agent obtained has convenient viscosity, preferable stability and average grain diameter smaller, has extremely strong film forming
Property；Sizing agent of the present invention is used for paper top sizing, has the characteristics that preferable surface strength and water-resistance.
Specific embodiment
With reference to embodiment, the present invention is specifically described.
Embodiment 1
It in reaction unit, is first passed through inert gas helium and drives oxygen, add in the dispersant that 10g molecular weight is 10000g/mol
Gelatin, 300g deionized waters are warming up to 85 DEG C to Gelatin by steam, add in 300g deionized waters and be cooled to 45 DEG C.Add
Enter dodecyl polyoxyethylene (15) the trimethyl ammonia chloride aqueous ammonium of 1g a concentration of 20% as emulsifier, add in 1.5g mass
Score be 15% initiator potassium persulfate aqueous solution, be heated to 95 DEG C, insulation reaction 0.5-1h, after heat preservation, be added dropwise with
Lower mix monomer：Methyl styrene 85g, hydroxyethyl methacrylate is as methacrylate-based monomer 20g, cationic monomer
Methacrylic acid acyloxyethyl trimethyl ammonium chloride 5g, cross-linking monomer are N- hydroxypropyl acrylamide 6g, and buffer carbonic acid is slowly added dropwise
Hydrogen sodium and neutralizer ammonium hydroxide control system pH value, add for 1 hour successively.After being added dropwise, 90-95 DEG C of control temperature maintains reaction
2 hours insulation reactions after the completion of insulation reaction, are cooled to 35 DEG C, pH=3.56, cross the filtering of 200 mesh filter screens, obtain sizing agent.
Solid content is 45%, and average grain diameter 50 (is measured) using Malven particle instruments, and cationic degree 0.04 (uses GB12303-90 methods
It measures).
Embodiment 2
In reaction unit, inert gas argon gas drive oxygen is first passed through, adds in the dispersant that 15g molecular weight is 50000g/mol
Gelatin, 300g deionized waters are warming up to 85 DEG C to Gelatin by steam, add in 350g deionized waters and be cooled to 45 DEG C.Add
Enter the pentadecyl polyoxyethylene trimethyl ammonia chloride aqueous ammonium of 0.5g a concentration of 20% as emulsifier, add in 1.2g mass point
Number is 15% initiator ammonium persulfate aqueous solution, is heated to 90 DEG C, insulation reaction 0.8h, after heat preservation, is added dropwise following mixed
Close monomer：Methyl styrene 95g, ethyl methacrylate is as methacrylate-based monomer 30g, cationic monomer acrylic acid
Dimethylaminoethyl monochloro methane quaternary ammonium 6g, cross-linking monomer be Methacrylamide 8g, be slowly added dropwise buffer sodium bicarbonate and
Neutralizer ammonium hydroxide control system pH value, adds for 1 hour successively.After being added dropwise, 90-95 DEG C of control temperature maintains reaction 2 hours
Insulation reaction after the completion of insulation reaction, is cooled to 35 DEG C, pH=4.2, crosses the filtering of 200 mesh filter screens, obtains sizing agent.Solid content
It is 43%, average grain diameter 45 (is measured) using Malven particle instruments, and cationic degree 0.09 (is measured) using GB12303-90 methods.
Embodiment 3
It in reaction unit, is first passed through inert nitrogen gas and drives oxygen, add in the dispersion that 10g molecular weight is 100000g/mol
Agent gelatin, 300g deionized waters are warming up to 85 DEG C to Gelatin by steam, add in 300g deionized waters and be cooled to 45 DEG C.
Octadecyl polyoxyethylene (15) the trimethyl ammonia chloride aqueous ammonium of 1g a concentration of 20% is added in as emulsifier, adds in 1g mass
Score is 15% initiator sodium persulfate aqueous solution, is heated to 85 DEG C, insulation reaction 1h, after heat preservation, is added dropwise following mixed
Close monomer：Methyl styrene 90g, methyl methacrylate is as methacrylate-based monomer 20g, two allyl of cationic monomer
Base alkyl dimethyl ammonium chloride 4g, cross-linking monomer are divinylbenzene 7g, and buffer sodium bicarbonate and neutralizer ammonium hydroxide control is slowly added dropwise
System pH processed adds for 1 hour successively.After being added dropwise, 90-95 DEG C of control temperature maintains 2 hours insulation reactions of reaction, heat preservation
After the completion of reaction, 35 DEG C, pH=3.68 are cooled to, the filtering of 200 mesh filter screens is crossed, obtains sizing agent.Solid content is 48%, average grain
Diameter 48 (is measured) using Malven particle instruments, and cationic degree 0.06 (is measured) using GB12303-90 methods.
Application examples：It is glued in upper sheet surface
The preparation of dextrin example：500kg water is added in gelatinization pot, adds in oxidized starch (absolute dry powder) 100kg, fully
It stirs and is warming up to 95 DEG C, heat preservation gelatinization 20 minutes adds in 600kg water, is cooled to 50 DEG C, adds Examples 1 to 3 formula system
Standby sizing agent (oxidized starch (dry)：Sizing agent (wet)=50:3), gelatin concentration 8-10% adds opposite oxidized starch amount
10% aluminum sulfate, be sufficiently mixed use.
The preparation of comparative example 1：500kg water is added in gelatinization pot, adds in oxidized starch (absolute dry powder) 100kg, fully
It stirs and is warming up to 95 DEG C, heat preservation gelatinization 20 minutes adds in 600kg water, is cooled to 50 DEG C, adds commercially available styrene-acrylic emulsion sizing
Agent (oxidized starch (dry)：Sizing agent (wet)=50:3), gelatin concentration 8-10% adds the 10% of opposite oxidized starch amount
Aluminum sulfate is sufficiently mixed use.
Test case：Cypres and commercially available styrene-acrylic emulsion sizing agent are prepared by above-described embodiment 1~3 as a comparison case
1, it be not glued quantification of 120g/m2Fluting medium front is coated sizing, coating weight 2g/m2, 110 DEG C are put in after sizing
Baking oven takes out after 120s, is cooled to room temperature, tests its performance by following test methods, then store it at ambient temperature
It is measured again after 10 days, each sizing agent sample is 10, and testing result is averaged after sizing, and it is as shown in the table for testing result：
1st, water imbibition (Cobb values)：Pattern to be measured is detected using GB/T1540-2002 methods.
2nd, ring crush intensity：Pattern to be measured is detected using GB/T 2679.8-1995 methods.
3rd, surface strength：Pattern to be measured is detected using GB/T22837-2008 methods.
4th, tensile strength：Pattern to be measured is detected using GB/T12914-2008 methods.
Conclusion (of pressure testing)：Cypres and comparative example 1 it can be seen from These parameters by being prepared to Examples 1 to 3
The corrugated paper that commercially available styrene-acrylic emulsion sizing agent is glued, the paper that the Cypres prepared using Examples 1 to 3 are glued
, Cobb values are significantly improved, increase its water-resistance, improve its surface strength, tensile strength, ring crush intensity are superior to commercially available benzene
Acrylic emulsion sizing agent.Measured value does not vary widely substantially after 10 days, illustrates do not have Moisture Regain substantially.
The particular instance of the present invention is illustrated above, but the protection content of the present invention be not only limited to more than it is real
Apply example, in technical field of the invention, the usual knowledge of to master, it is possible to be carried out in the range of its technology main idea a variety of
Various change.
Claims (8)
1. a kind of paper or paperboard grade (stock) sizing agent, it is characterised in that be made of the raw material of following parts by weight：
20-32 parts of 85-96 parts of styrene or methyl styrene, acrylic ester monomer or methacrylate-based monomer, crosslinking
2-8 parts of monomer, 0.5-1 parts of the emulsifier aqueous solution of a concentration of 20wt%, the initiator solution 1-1.5 of a concentration of 15wt%
Part, 10-25 parts of dispersant, 1-5 parts of buffer, 1-5 parts of neutralizer, 2-6 parts of cationic monomer, 500-630 parts of water.
2. the preparation method of a kind of paper described in claim 1 or paperboard grade (stock) sizing agent, it is characterised in that include the following steps：
By styrene or methyl styrene, acrylic ester monomer or methacrylate-based monomer, cross-linking monomer, emulsifier,
Initiator, dispersant, buffer, neutralizer, cationic monomer and water add in reaction vessel, and inert gas drives oxygen, in steam
Free-radical emulsion polymerization is carried out under heating condition, reaction obtains sizing agent.
3. sizing agent according to claim 1 or 2, which is characterized in that the acrylic ester monomer or methacrylic acid
Esters monomer is methyl methacrylate, ethyl methacrylate, hydroxyethyl methacrylate, methyl acrylate, acrylic acid second
One or more mixing in ester, hydroxy-ethyl acrylate；
The cross-linking monomer is hydroxypropyl acrylate, hydroxy propyl methacrylate, acrylamide, Methacrylamide, N- hydroxypropyls
Acrylamide, double acrylic acid glycol esters, acrylate, aminoethyl methacrylate, acrylic-amino propyl ester, methyl
One or more mixing in acrylic-amino propyl ester, dimethyl m-isopropenyl phenyl isocyanate, divinylbenzene；
The emulsifier is cationic surfactant, and the cationic surfactant is selected from C12-18Alkyl polyoxyethylene (n)
One or more mixing in trimethyl ammonium chloride, wherein n=5-20；
The initiator is potassium peroxydisulfate, sodium peroxydisulfate, ammonium persulfate, benzoyl peroxide, lauroyl peroxide, benzoyl peroxide
Any one in t-butyl formate, two NSC 18620 hydrochlorate of azo；
The dispersant is gelatin, and the average molecular weight of the gelatin is 10000-100000；
The buffer is sodium bicarbonate；
The neutralizer is ammonium hydroxide；
The cationic monomer is selected from dimethylaminoethyl acrylate monochloro methane quaternary ammonium, methacrylic acid acyloxyethyl trimethyl
One or more mixing in ammonium chloride or diallyldimethylammonium chloride；
The water is tap water or deionized water.
4. preparation method according to claim 2, which is characterized in that the inert gas for helium, argon gas, nitrogen it is arbitrary
It is a kind of.
5. preparation method according to claim 2, which is characterized in that described that free radical emulsion is carried out under steam heating condition
The temperature of polymerization is 85-90 DEG C, and the reaction time is 1.5-5 hours.
6. sizing agent according to claim 1 or 2, which is characterized in that the pH of the sizing agent is 2-6, solid content 35-
50%, average grain diameter 40nm-50nm, cationic degree 0.02-0.2.
7. sizing agent according to claim 1 or 2, which is characterized in that the sizing agent is for corrugated paper, cardboard or white card
The surface treatment of paper.
8. sizing agent according to claim 1 or 2, which is characterized in that the sizing agent and oxidized starch compounding for watt
The bonding of corrugated paper board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406235.0A CN108149516A (en) | 2017-12-22 | 2017-12-22 | A kind of paper or paperboard grade (stock) sizing agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406235.0A CN108149516A (en) | 2017-12-22 | 2017-12-22 | A kind of paper or paperboard grade (stock) sizing agent and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904728A (en) * | 2019-11-21 | 2020-03-24 | 陕西科技大学 | Gelatin-based papermaking sizing agent based on hydrogen bond effect and preparation method thereof |
| CN111576086A (en) * | 2020-04-29 | 2020-08-25 | 上海昶法新材料有限公司 | Surface sizing agent, raw material composition, preparation method and application thereof |
| CN111979844A (en) * | 2020-09-01 | 2020-11-24 | 黄少荣 | Anticorrosive green environment-friendly corrugated paper production process |
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| CN101148842A (en) * | 2007-06-28 | 2008-03-26 | 上海东升新材料有限公司 | Paper surface sizing agent and preparation method thereof |
| CN101654893A (en) * | 2009-09-07 | 2010-02-24 | 牡丹江恒丰纸业股份有限公司 | Preparation method of surface sizing agent of cationic polyurethane/cationic styrene-acrylic composite emulsion |
| CN102086614A (en) * | 2010-08-25 | 2011-06-08 | 永港伟方（北京）科技股份有限公司 | Surface sizing agent as well as preparation method and application thereof |
| CN102775542A (en) * | 2011-05-11 | 2012-11-14 | 永港伟方（北京）科技股份有限公司 | Styrene-acrylic emulsion, preparation method thereof, and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148842A (en) * | 2007-06-28 | 2008-03-26 | 上海东升新材料有限公司 | Paper surface sizing agent and preparation method thereof |
| CN101654893A (en) * | 2009-09-07 | 2010-02-24 | 牡丹江恒丰纸业股份有限公司 | Preparation method of surface sizing agent of cationic polyurethane/cationic styrene-acrylic composite emulsion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904728A (en) * | 2019-11-21 | 2020-03-24 | 陕西科技大学 | Gelatin-based papermaking sizing agent based on hydrogen bond effect and preparation method thereof |
| CN110904728B (en) * | 2019-11-21 | 2022-03-22 | 陕西科技大学 | Gelatin-based papermaking sizing agent based on hydrogen bond effect and preparation method thereof |
| CN111576086A (en) * | 2020-04-29 | 2020-08-25 | 上海昶法新材料有限公司 | Surface sizing agent, raw material composition, preparation method and application thereof |
| CN111576086B (en) * | 2020-04-29 | 2022-06-10 | 上海昶法新材料有限公司 | Surface sizing agent, raw material composition, preparation method and application thereof |
| CN111979844A (en) * | 2020-09-01 | 2020-11-24 | 黄少荣 | Anticorrosive green environment-friendly corrugated paper production process |
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Application publication date: 20180612 |