CN102532386B - Styrene-acrylate emulsion for primary coating of coating paper - Google Patents
Styrene-acrylate emulsion for primary coating of coating paper Download PDFInfo
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- CN102532386B CN102532386B CN201110457885.4A CN201110457885A CN102532386B CN 102532386 B CN102532386 B CN 102532386B CN 201110457885 A CN201110457885 A CN 201110457885A CN 102532386 B CN102532386 B CN 102532386B
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Abstract
The invention discloses a styrene-acrylate emulsion for a primary coating of coating paper and a preparation method and an application thereof. The emulsion is prepared from the following raw materials in parts by weight: 4-15 parts of a seed emulsion, 100 parts of a mixed monomer, 0.7-4.5 parts of an emulsifier, 0.4-4.5 parts of an initiator, 2-4 parts of a promoting agent, 2-8 parts of a crosslinking monomer, 4-20 parts of an alkaline solution and 90-290 parts of water. The styrene-acrylate emulsion for the primary coating of the coating paper is a high-performance and environmentally-friendly product which can meet the requirements of a papermaking coating. After the product is applied to the primary coating of the coating paper, the surface strength and water resistance of the coating paper can be enhanced remarkably, and paper printing suitability is increased.
Description
Technical field
The present invention relates to a kind of styrene-acrylic emulsion for priming paint, be applied to the bottom-coating of White Board.
Background technology
Emulsion is widely used in the bonding of paper coating, in application process, more and more higher to the performance requriements of emulsion.Along with improvement and the development of emulsion applications Technology, require emulsion to there is good technique suitability, wherein, the most important or water resisting property of the cohesiveness of benzene emulsion and coating.Emulsion applications can obviously improve the surface strength of paper in paper coating, improves the printing adaptability of paper.
Summary of the invention
The object of the invention is to propose a kind of styrene, to overcome the defect of prior art.
Styrene of the present invention, is with the raw material of following parts by weight proportioning, by emulsion polymerization way, prepares:
Described mix monomer is by the monomer composition of following parts by weight:
20～44 parts of (methyl) acrylate
40～74 parts of (methyl) vinylbenzene
6～10 parts, (methyl) vinylformic acid.
Said seed emulsion is with the raw material of following parts by weight proportioning, by emulsion polymerization way, prepares:
Described mix monomer II is by the monomer composition of following parts by weight:
85～95 parts of (methyl) vinylbenzene
5～15 parts of (methyl) acrylate
Said polyvinyl alcohol is selected from least one in polyvinyl alcohol 0588,1788 or 2488.
Said alkyl diphenyl ether disulphonic acid disodium is selected from least one in ten alkyl diphenyl ether disulphonic acid disodiums, disodium alkyl diphenyl ether disulphonate, hexadecyl phenyl ether disulfonic acid disodium or branched-chain alkyl phenyl ether disulfonic acid disodium;
Said polypropylene glycol is selected from polypropylene glycol PPG-200, PPG-400, at least one in PPG-600;
Said (methyl) acrylate is selected from methyl acrylate, ethyl propenoate, n-butyl acrylate, isobutyl acrylate, ethyl acrylate, methyl methacrylate, β-dimethyl-aminoethylmethacrylate, n-BMA, methacrylic acid-2-ethylhexyl, acrylic or methacrylic acid C
8～C
16at least one in alkyl ester, preferably n-butyl acrylate, methyl methacrylate or ethyl acrylate;
Described emulsifying agent is that anion surfactant and nonionogenic tenside are composited, and weight ratio is: anion surfactant: nonionogenic tenside=1: 3～2.5: 1;
Said nonionogenic tenside is selected from Witconol AL 69-66, anhydrous sorbitol tristearate (this dish 65), glycol fatty acid ester, propylene glycol fatty acid ester, anhydrous sorbitol list hard fatty acid ester (this dish 60), sorbitan monooleate (span 80), Diethylene Glycol fatty acid ester, anhydrous sorbitol monopalmitate (this dish 40), polyoxytrimethylene hard fatty acid ester, sorbitan mono-laurate (this dish 20), polyoxyethylene hard fatty acid ester, lauric acid polyoxyethylene ester, polyoxyethylene (4) anhydrous sorbitol list hard fatty acid ester (Tween61), polyoxyethylene (5) sorbitan monooleate (sorbimacrogol oleate100), polyoxyethylene (20) anhydrous sorbitol tristearate (polysorbate65), polyoxyethylene (20) Witconol AL 69-66 (polysorbate85), polyoxyethylene monoleate, fatty alcohol amine polyoxyethylene ether, alkylphenol polyoxyethylene, polyoxyethylene mono-laurate, polyoxyethylene castor oil, polyoxyethylene (4) sorbitan mono-laurate (tween 21), polyoxyethylene (20) anhydrous sorbitol list hard fatty acid ester (polysorbate60), polyoxyethylene (20) sorbitan monooleate (tween 80), polyoxyethylene (20) anhydrous sorbitol monopalmitate (polysorbate40), at least one in polyoxyethylene (20) sorbitan mono-laurate (polysorbas20), preferably sorbitan monooleate (span 80), polyoxyethylene (20) sorbitan monooleate (tween 80) or sorbitan mono-laurate (this dish 20),
Said anion surfactant is selected from C
10～C
20sodium alkyl benzene sulfonate, C
10～C
20sodium alkyl naphthalene sulfonate, C
10～C
20at least one in sodium alkyl sulfate, dialkyl group-2-sodium sulfosuccinate, dicyclohexyl-2-sodium sulfosuccinate, succinic acid sodium sulfonate, sodium oleate, potassium oleate or Emulphor FM, preferably Sodium dodecylbenzene sulfonate, dodecyl sodium naphthalene sulfonate or dialkyl group-2-sodium sulfosuccinate;
Described initiator is selected from least one in Potassium Persulphate, Sodium Persulfate or ammonium persulphate;
Described promotor is selected from least one in Methacrylamide ethyl ethylene-urea or diacetone-acryloamide(DAA);
Described cross-linking monomer I is selected from least one in vinylformic acid-2-hydroxyl ethyl ester, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate or methacrylic acid-2-hydroxypropyl acrylate;
Described cross-linking monomer II is selected from least one in glutaraldehyde or oxalic dialdehyde;
Described alkali aqueous solution is selected from least one in aqueous sodium hydroxide solution, potassium hydroxide aqueous solution or ammonium hydroxide aqueous solution, and weight concentration is 10～25%;
The preparation method of described styrene, comprises the steps:
1) seed emulsion
A) (methyl) acrylate, (methyl) vinylbenzene are mixed, obtain mix monomer II.
B) polyvinyl alcohol, alkyl diphenyl ether disulphonic acid sodium salt, polypropylene glycol, initiator and water are mixed, under 70～90 ℃ of conditions, be incubated 10～30 minutes, add the mix monomer II of step in a);
C) under 70～90 ℃ of conditions, be incubated 1～3 hour, be cooled to 10～35 ℃, filter, collect filtrate, obtain seed emulsion.Gained seed emulsion weight solid content is 20～40%, median size 20～40nm (using Malven particle instrument to record), pH=2～6 (using PHS-3C Accurate pH instrumentation to obtain).
2) styrene:
A) (methyl) acrylate, (methyl) vinylbenzene, (methyl) vinylformic acid and oxalic dialdehyde (or glutaraldehyde) are mixed, obtain mix monomer;
B) initiator of the emulsifying agent of gross weight 2.5～45.5%, gross weight 2.4～62.5% and gross weight 3.4～11.2% water are mixed, obtain aqueous solution I;
C) water of promotor and gross weight 3.4～11.2% is mixed, obtain aqueous solution II;
D) mix monomer is mixed with emulsifying agent, the initiator of gross weight 7.4～91.0% and the water of gross weight 17.2～55.6% of gross weight 16.5～91.0%, obtain aqueous solution III;
E) seed emulsion is mixed with emulsifying agent, the initiator of surplus and the water of surplus of surplus, 60 ℃～95 ℃ reactions 10～40 minutes, then drip the mixed liquor I II in d) step, drip 1～3 hour;
Then, at 50～80 ℃, the mixed liquor I of the step that simultaneously drips gross weight 30～35% in b) and the step mixed liquor I I in c), drips 10～30 minutes, then the mixed solution of the step that simultaneously drips surplus in b) and whole cross-linking monomer I, drip 10～30 minutes;
F) 50～80 ℃ of insulations 1～2 hour, are cooled to 10～35 ℃, are neutralized to pH=6～9 with alkali aqueous solution, filter, and collect filtrate, obtain styrene-acrylic emulsion for priming paint.Gained emulsion median size 50～100nm (using Malven particle instrument to record).
Said styrene, can be applicable to the bottom-coating of White Board.
The present invention finds to add polypropylene glycol in the preparation process of seed emulsion, the seed emulsion size distribution making is narrow, the benzene emulsion that adopts this seed emulsion to prepare is applied to the bottom-coating of White Board, can obviously improve coating and the printing adaptability of paper, increase substantially the surface strength of paper.The present invention finds by the emulsion that graft-promoting additive, cross-linking monomer I and cross-linking monomer II obtain successively on benzene emulsion, be applied to the bottom-coating of White Board, the coating gloss of paper can be improved, and the surface strength of paper and the water resisting property of paper can be increased substantially.The present invention finds to increase cross-linking monomer II (oxalic dialdehyde or glutaraldehyde) and can greatly improve the water tolerance of emulsion and be applied in White Board primary coat, improves the water resisting property of paper.This may be due at benzene emulsion graft-promoting additive, linking agent, form the comb shaped structure of block, emulsion particle surface has great amount of hydroxy group to form strong hydrogen bond action with fiber surface, strengthen the surface strength of paper, active group in promotor can react with substrate surface and improve surface strength of paper simultaneously, the combination degree that improves the each component of coating, is improved the printing adaptability of paper.
Styrene of the present invention is a kind of product that can meet high-performance for papermaking paint, environmental protection.This product is applied in the bottom-coating of White Board, can obviously strengthen surface strength and the water resisting property of White Board, improves paper printing adaptability.
Embodiment
Embodiment 1
1) seed emulsion is synthetic:
A) 12g n-butyl acrylate, 85g vinylbenzene are mixed, obtain mix monomer II.
B) 10g polyvinyl alcohol 0588 (Guangzhou Qi Sheng Chemical Co., Ltd.), 10g disodium alkyl diphenyl ether disulphonate (Luo Diya), 0.1g polypropylene glycol PPG-200 (Jiangsu Hai'an Petrochemical Plant), 0.5g Potassium Persulphate and 180.9g deionized water are mixed, under 90 ℃ of conditions, be incubated 10 minutes, add the mix monomer II of step in a).
C) under 90 ℃ of conditions, be incubated 1 hour, be cooled to 25 ℃, 100 eye mesh screens filter, obtain seed emulsion, weight solid content: 39.68wt%, median size 39.3nm (using Malven particle instrument to record), pH=5.93 (using PHS-3C Accurate pH instrumentation to obtain).
2) styrene is synthetic:
A) 25g n-butyl acrylate, 70g vinylbenzene, 4g vinylformic acid and 1 oxalic dialdehyde are mixed to mix monomer.Standby.
B), by 0.05g Sodium dodecylbenzene sulfonate, 0.05g polyoxyethylene (20) sorbitan monooleate (tween 80), 0.1g Potassium Persulphate are dissolved in 10g deionized water.Standby.
C) 0.5g Methacrylamide ethyl ethylene-urea is dissolved in to 10g deionized water.Standby.
D) add 0.4g Sodium dodecylbenzene sulfonate, 0.1g polyoxyethylene (20) sorbitan monooleate (tween 80), 0.2g Potassium Persulphate to become the aqueous solution with 50g deionized water dissolving the mix monomer in a) step, stir 30 minutes.Standby.
E) by 4g step 1) in seed emulsion add 0.05g Sodium dodecylbenzene sulfonate, in the aqueous solution of 0.05g polyoxyethylene (20) sorbitan monooleate (tween 80), 0.1g Potassium Persulphate and 24.3g deionized water, under 60 ℃ of conditions, react 40 minutes, then drip the mixed solution in d) step, drip 3 hours.Whole mixed solution in mixed solution in 50 ℃ of b) steps that simultaneously drip gross weight 33% and c) step, drips 30 minutes, then drips mixed solution and 2g 2-hydroxyethyl methacrylate in the b) step of surplus simultaneously, drips 30 minutes;
F) 50 ℃ are incubated 2 hours.Be cooled to 25 ℃, the 20g aqueous sodium hydroxide solution that is 25% by weight concentration neutralization, continues to stir 10 minutes.Through 100 eye mesh screens, filter, obtain styrene-acrylic emulsion for priming paint, weight solid content: 49.72wt%, median size 95nm (using Malven particle instrument to record), pH=6.21 (using PHS-3C Accurate pH instrumentation to obtain).
Embodiment 2
1) seed emulsion is synthetic:
A) 5g ethyl propenoate, 95g vinyl toluene are mixed, obtain mix monomer II.
B) 20g polyvinyl alcohol 1788 (Guangzhou Qi Sheng Chemical Co., Ltd.), 20g disodium alkyl diphenyl ether disulphonate (Luo Diya), 2g polypropylene glycol PPG-400 (Jiangsu Hai'an Petrochemical Plant), 2g ammonium persulphate and 576g deionized water are mixed, under 90 ℃ of conditions, be incubated 30 minutes, add the mix monomer II of step in a).
C) under 90 ℃ of conditions, be incubated 3 hours, be cooled to 25 ℃, 100 eye mesh screens filter, obtain seed emulsion, weight solid content: 20.5wt%, median size 23.5nm (using Malven particle instrument to record), pH=2.15 (using PHS-3C Accurate pH instrumentation to obtain).
2) styrene is synthetic:
A) 65g ethyl propenoate, 30g vinyl toluene, 3g methacrylic acid and 2g oxalic dialdehyde are mixed to mix monomer.Standby.
B), by 0.1g dialkyl group-2-sodium sulfosuccinate, 0.4g sorbitan mono-laurate (this dish 20), 0.5g Sodium Persulfate are dissolved in 10g deionized water.Standby.
C) 1.5g diacetone-acryloamide(DAA) is dissolved in to 10g deionized water.Standby.
D) mix monomer in a) step is added 1g dodecyl sodium naphthalene sulfonate, 1g sorbitan mono-laurate (this dish 20), 2g Sodium Persulfate become the aqueous solution with 50g deionized water dissolving, stir 30 minutes.Standby.
E) by 8g step 1) in seed emulsion, 0.5g dodecyl sodium naphthalene sulfonate, in the aqueous solution of 1.5g polyoxyethylene monoleate, 2g Sodium Persulfate and 190.0g deionized water, under 95 ℃ of conditions, react 10 minutes, then drip mixed solution in d) step 1 hour.Whole mixed solution in mixed solution in 80 ℃ of b) steps that simultaneously drip gross weight 35% and c) step, drips 10 minutes, then drips b) mixed solution and the 1g vinylformic acid-2-hydroxyl ethyl ester in step of surplus simultaneously, drips 10 minutes.
F) 80 ℃ are incubated 1 hour.Being cooled to 25 ℃, is that 20%40g ammonium hydroxide aqueous solution neutralizes by weight concentration, continues to stir 10 minutes.Through 100 eye mesh screens, filter, obtain styrene-acrylic emulsion for priming paint, solid content: 30.23wt%, median size 75.1nm (using Malven particle instrument to record), pH=8.95 (using PHS-3C Accurate pH instrumentation to obtain).
Embodiment 3
1) seed emulsion is synthetic:
A) 5g methyl methacrylate, 5g ethyl acrylate, 90g vinyl toluene are mixed, obtain mix monomer II.
B) 15g polyvinyl alcohol 2488 (Guangzhou Qi Sheng Chemical Co., Ltd.), 15g disodium alkyl diphenyl ether disulphonate (Luo Diya), 1g polypropylene glycol PPG-600 (Jiangsu Hai'an Petrochemical Plant), 1g Sodium Persulfate and 308g deionized water are mixed, under 80 ℃ of conditions, be incubated 20 minutes, add the mix monomer II of step in a).
C) under 80 ℃ of conditions, be incubated 2 hours, be cooled to 25 ℃, 100 eye mesh screens filter, obtain seed emulsion, weight solid content: 30.33wt%, median size 32.0nm (using Malven particle instrument to record), pH=3.85 (using PHS-3C Accurate pH instrumentation to obtain).
2) styrene is synthetic:
A) 20g methyl methacrylate, 25g ethyl acrylate, 50g vinyl toluene, 3g methacrylic acid and 2g glutaraldehyde are mixed and made into mix monomer.Standby.
B), by 0.1g succinic acid sodium sulfonate, 0.2g polyoxytrimethylene hard fatty acid ester, 0.3g ammonium persulphate are dissolved in 10g deionized water.Standby.
C) 0.5g diacetone-acryloamide(DAA), 0.5g Methacrylamide ethyl ethylene-urea are dissolved in to 10g deionized water.Standby.
D) add 0.2g potassium oleate, 0.8g Diethylene Glycol fatty acid ester, 1g ammonium persulphate to become the aqueous solution with 50g deionized water dissolving the mix monomer in a) step, stir 30 minutes.Standby.
E) by 15g step 1) in seed emulsion add 0.8g sodium lauryl sulphate, in the aqueous solution of 0.2g sorbitan monooleate (span 80), 1g ammonium persulphate and 78.65g deionized water, under 75 ℃ of conditions, react 20 minutes, then drip the mixed solution in d) step, drip 2 hours.75 ℃ drip gross weight 30b simultaneously) mixed solution in step and c) the whole mixed solution in step, drip 20 minutes, then drip mixed solution and 1.5g methacrylic acid-2-hydroxypropyl acrylate in the b) step of surplus simultaneously, drip 20 minutes;
F) 75 ℃ are incubated 1 hour.Being cooled to 25 ℃, is that 10%30g potassium hydroxide aqueous solution neutralizes by weight concentration, continues to stir 10 minutes.Through 100 eye mesh screens, filter, obtain styrene-acrylic emulsion for priming paint, solid content: 40.35wt%, median size 50.3nm (using Malven particle instrument to record), pH=7.18 (using PHS-3C Accurate pH instrumentation to obtain).
Embodiment 4
1) seed emulsion is synthetic:
A) 7g n-BMA, 93g vinylbenzene are mixed, obtain mix monomer II.
B) 13g polyvinyl alcohol 2488 (Guangzhou Qi Sheng Chemical Co., Ltd.), 18g disodium alkyl diphenyl ether disulphonate (Luo Diya), 1.5g polypropylene glycol PPG-600 (Jiangsu Hai'an Petrochemical Plant), 1.2g ammonium persulphate and 401.1g deionized water are mixed, under 85 ℃ of conditions, be incubated 25 minutes, add the mix monomer II of step in a).
C) under 85 ℃ of conditions, be incubated 2.5 hours, be cooled to 25 ℃, 100 eye mesh screens filter, obtain seed emulsion, weight solid content: 25.21wt%, median size 27.5nm (using Malven particle instrument to record), pH=3.75 (using PHS-3C Accurate pH instrumentation to obtain).
2) styrene is synthetic:
A) 55g n-BMA, 40g vinylbenzene, 2g vinylformic acid and 3g glutaraldehyde are mixed and made into mix monomer.Standby.B), by 0.1g dicyclohexyl-2-sodium sulfosuccinate, 0.1g polyoxyethylene (4) anhydrous sorbitol list hard fatty acid ester (Tween61), 0.2g Sodium Persulfate are dissolved in 10g deionized water.Standby.
C) 0.3g diacetone-acryloamide(DAA), 0.4g Methacrylamide ethyl ethylene-urea are dissolved in to 10g deionized water.Standby.
D) add 0.6g dicyclohexyl-2-sodium sulfosuccinate, 0.8g polyoxyethylene (4) anhydrous sorbitol list hard fatty acid ester (Tween61), 1.3g Sodium Persulfate to become the aqueous solution with 50g deionized water dissolving the mix monomer in a) step, stir 30 minutes.Standby.
E) by 11g step 1) in seed emulsion add 0.5g Sodium palmityl sulfate, in the aqueous solution of 0.7g polyoxyethylene (4) anhydrous sorbitol list hard fatty acid ester (Tween61), 1.5g Sodium Persulfate and 47.0g deionized water, under 65 ℃ of conditions, react 15 minutes, then drip the mixed solution in d) step, drip 2.5 hours.Whole mixed solution in mixed solution in 65 ℃ of b) steps that simultaneously drip gross weight 33% and c) step, drips 15 minutes, then drips mixed solution in the b) step of surplus and 1.8g 2-hydroxyethyl methacrylate 15 minutes simultaneously.
F) 65 ℃ are incubated 1 hour.Being cooled to 25 ℃, is that 15%25g aqueous sodium hydroxide solution neutralizes by weight concentration, continues to stir 10 minutes.Through 100 eye mesh screens, filter, obtain styrene-acrylic emulsion for priming paint, solid content: 45.09wt%, median size 81.2nm (using Malven particle instrument to record), pH=7.89 (using PHS-3C Accurate pH instrumentation to obtain).
Embodiment 5
1) seed emulsion is synthetic:
A) 12g isobutyl acrylate, 88g vinyl toluene are mixed, obtain mix monomer II.
B) 17g polyvinyl alcohol 1788 (Guangzhou Qi Sheng Chemical Co., Ltd.), 13g disodium alkyl diphenyl ether disulphonate (Luo Diya), 0.8g polypropylene glycol PPG-400 (Jiangsu Hai'an Petrochemical Plant), 0.7g ammonium persulphate and 244.2g deionized water are mixed, under 75 ℃ of conditions, be incubated 15 minutes, add the mix monomer II of step in a).
C) under 75 ℃ of conditions, be incubated 1.5 hours, be cooled to 25 ℃, 100 eye mesh screens filter, obtain seed emulsion, weight solid content: 34.92wt%, median size 35.1nm (using Malven particle instrument to record), pH=3.45 (using PHS-3C Accurate pH instrumentation to obtain).
2) styrene is synthetic:
A) 36g isobutyl acrylate, 60g vinyl toluene, 2g methacrylic acid and 2g oxalic dialdehyde are mixed to mix monomer.Standby.
B), by 0.2g Emulphor FM, 0.2g Witconol AL 69-66,0.4g Sodium Persulfate are dissolved in 10g deionized water.Standby.
C) 0.5g diacetone-acryloamide(DAA), 0.7g Methacrylamide ethyl ethylene-urea are dissolved in to 10g deionized water.Standby.
D) add 0.3g Emulphor FM, 0.3g Witconol AL 69-66,0.5g Sodium Persulfate and 50g deionized water dissolving to become the aqueous solution mix monomer in a) step, stir 30 minutes.Standby.
E) by 12g step 1) in seed emulsion add 0.3g hexadecyl benzene sulfonic acid sodium salt, in the aqueous solution of 0.6g Witconol AL 69-66,0.6g Sodium Persulfate and 119.27g deionized water, under 70 ℃ of conditions, react 15 minutes, then drip the mixed solution in d) step, drip 1.5 hours.70 ℃ drip mixed solution in 33% b) step and c) whole mixed solution in step simultaneously, drip 25 minutes, then drip mixed solution in the b) step of surplus and 1.4g 2-hydroxyethyl methacrylate 25 minutes simultaneously;
F) 70 ℃ are incubated 1 hour.Being cooled to 25 ℃, is that 18%35g potassium hydroxide aqueous solution neutralizes by weight concentration, continues to stir 10 minutes.Through 100 eye mesh screens, filter, obtain styrene-acrylic emulsion for priming paint, solid content: 34.95wt%, median size 65.1nm (using Malven particle instrument to record), pH=8.18 (using PHS-3C Accurate pH instrumentation to obtain).
Embodiment 6
Comparative example: the emulsion of preparing by the method for CN101280035A
By embodiment 1～5 and comparative example, by following formulated coating
95 grades of water-ground limestone 400g
Brazil china clay 100g
Emulsion (dry weight) 50g
Deionized water is appropriate, and adjusting coating weight solid content is 65%.
Experimentation: 1) 95 grades of water-ground limestones, Brazilian china clay and appropriate amount of deionized water are added to high speed dispersor, high speed dispersion 20～30min after stirring, qualified to fineness, under low speed, add emulsion, after stirring, discharging, 100 eye mesh screens filter.2) will adopt the coating 10# spreading rod of embodiment 1～5 and the preparation of comparative example emulsion at 75g/m
2on art base paper, be coated with glue spread 20g/m
2, standby.3) coating rolling condition: get respectively twice of the hard press polish of the small-sized rolling press of above-mentioned coating pattern (0.3Mpa, 85 ℃).Standby.
A) adopt IGT printability instrument (Japanese KRK) to detect above-mentioned White Board:
Criterion: surface strength shows that more greatly emulsion effect is better
| Surface strength m/s |
| Comparative example | 0.68 |
| Embodiment 1 | 0.95 |
| Embodiment 2 | 0.98 |
| Embodiment 3 | 1.03 |
| Embodiment 4 | 0.96 |
| Embodiment 5 | 1.09 |
B) Cobb pH-value determination pH:
The XSH type of employing Hangzhou Qingtong Boke Automation Technology Co., Ltd. suddenly absorptivity determinator detects pattern to be measured by GB/T1540-1989 method.
Criterion: Cobb value is more low better
| Sample | Cobb value/(g/m 2) |
| Comparative example | 95 |
| Embodiment 1 | 85 |
| Embodiment 2 | 79 |
| Embodiment 3 | 75 |
| Embodiment 4 | 81 |
| Embodiment 5 | 76 |
From above-mentioned application result, can find out: the styrene-acrylic emulsion for priming paint that uses the embodiment of the present invention 1～5 preparation, compared with comparative example, be applied to the bottom-coating of White Board, can significantly improve surface strength and the water resisting property of White Board, improve the printing adaptability of paper.
Claims (5)
1. styrene, is characterized in that, is with the raw material of following parts by weight proportioning, by emulsion polymerization way, prepares:
Described mix monomer is by the monomer composition of following parts by weight:
20～44 parts of (methyl) acrylate
40～74 parts of (methyl) vinylbenzene
6～10 parts, (methyl) vinylformic acid;
Said seed emulsion is with the raw material of following parts by weight proportioning, by emulsion polymerization way, prepares:
Described mix monomer II is by the monomer composition of following parts by weight:
85～95 parts of (methyl) vinylbenzene
5～15 parts of (methyl) acrylate.
2. styrene according to claim 1, it is characterized in that, said alkyl diphenyl ether disulphonic acid sodium salt is selected from least one in ten alkyl diphenyl ether disulphonic acid disodiums, disodium alkyl diphenyl ether disulphonate, hexadecyl phenyl ether disulfonic acid disodium or branched-chain alkyl phenyl ether disulfonic acid disodium;
Said polypropylene glycol is selected from polypropylene glycol PPG-200, PPG-400, at least one in PPG-600;
Said (methyl) acrylate is selected from methyl acrylate, ethyl propenoate, n-butyl acrylate, isobutyl acrylate, ethyl acrylate, methyl methacrylate, β-dimethyl-aminoethylmethacrylate, n-BMA, methacrylic acid-2-ethylhexyl or methacrylic acid C
8～C
16at least one in alkyl ester;
Described emulsifying agent is that anion surfactant and nonionogenic tenside are composited, and weight ratio is: anion surfactant: nonionogenic tenside=1: 3～2.5:1;
Said nonionogenic tenside is selected from Witconol AL 69-66, anhydrous sorbitol tristearate (this dish 65), glycol fatty acid ester, propylene glycol fatty acid ester, anhydrous sorbitol list hard fatty acid ester (this dish 60), sorbitan monooleate (span 80), Diethylene Glycol fatty acid ester, anhydrous sorbitol monopalmitate (this dish 40), polyoxytrimethylene hard fatty acid ester, sorbitan mono-laurate (this dish 20), polyoxyethylene hard fatty acid ester, lauric acid polyoxyethylene ester, polyoxyethylene (4) anhydrous sorbitol list hard fatty acid ester (Tween61), polyoxyethylene (5) sorbitan monooleate (sorbimacrogol oleate100), polyoxyethylene (20) anhydrous sorbitol tristearate (polysorbate65), polyoxyethylene (20) Witconol AL 69-66 (polysorbate85), polyoxyethylene monoleate, fatty alcohol amine polyoxyethylene ether, alkylphenol polyoxyethylene, polyoxyethylene mono-laurate, polyoxyethylene castor oil, polyoxyethylene (4) sorbitan mono-laurate (tween 21), polyoxyethylene (20) anhydrous sorbitol list hard fatty acid ester (polysorbate60), polyoxyethylene (20) sorbitan monooleate (tween 80), polyoxyethylene (20) anhydrous sorbitol monopalmitate (polysorbate40), at least one in polyoxyethylene (20) sorbitan mono-laurate (polysorbas20),
Said anion surfactant is selected from C
10～C
20sodium alkyl benzene sulfonate, C
10～C
20sodium alkyl naphthalene sulfonate, C
10～C
20at least one in sodium alkyl sulfate, dialkyl group-2-sodium sulfosuccinate, dicyclohexyl-2-sodium sulfosuccinate, succinic acid sodium sulfonate, sodium oleate, potassium oleate or Emulphor FM.
3. styrene according to claim 2, is characterized in that, described initiator is selected from least one in Potassium Persulphate, Sodium Persulfate or ammonium persulphate; Described promotor is selected from least one in Methacrylamide ethyl ethylene-urea or diacetone-acryloamide(DAA);
Described cross-linking monomer is comprised of cross-linking monomer I and cross-linking monomer II;
Described cross-linking monomer I is selected from least one in vinylformic acid-2-hydroxyl ethyl ester, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate or methacrylic acid-2-hydroxypropyl acrylate;
Described cross-linking monomer II is selected from least one in glutaraldehyde or oxalic dialdehyde;
Described alkali aqueous solution is selected from least one in aqueous sodium hydroxide solution, potassium hydroxide aqueous solution or ammonium hydroxide aqueous solution, and weight concentration is 10～25%.
4. the method for preparation styrene claimed in claim 3, comprises the steps:
1) seed emulsion
A) (methyl) acrylate, (methyl) vinylbenzene are mixed, obtain mix monomer II;
B) polyvinyl alcohol, alkyl diphenyl ether disulphonic acid sodium salt, polypropylene glycol, initiator and water are mixed, under 70～90 ℃ of conditions, be incubated 10～30 minutes, add the mix monomer II of step in a);
C) under 70～90 ℃ of conditions, be incubated 1～3 hour, be cooled to 10～35 ℃, filter, collect filtrate, obtain seed emulsion; Gained seed emulsion weight solid content is 20～40%;
2) styrene:
A) (methyl) acrylate, (methyl) vinylbenzene, (methyl) vinylformic acid and oxalic dialdehyde or glutaraldehyde are mixed, obtain mix monomer;
B) initiator of the emulsifying agent of gross weight 2.5～45.5%, gross weight 2.4～62.5% and gross weight 3.4～11.2% water are mixed, obtain aqueous solution I;
C) water of promotor and gross weight 3.4～11.2% is mixed, obtain aqueous solution II;
D) mix monomer is mixed with emulsifying agent, the initiator of gross weight 7.4～91.0% and the water of gross weight 17.2～55.6% of gross weight 16.5～91.0%, obtain aqueous solution III;
E) seed emulsion is mixed with emulsifying agent, the initiator of surplus and the water of surplus of surplus, 60 ℃～95 ℃ reactions 10～40 minutes, then drip the aqueous solution III in d) step, drip 1～3 hour;
Then, at 50～80 ℃, the aqueous solution I of the step that simultaneously drips gross weight 30～35% in b) and the step aqueous solution II in c), drips 10～30 minutes, then the aqueous solution I of the step that simultaneously drips surplus in b) and whole cross-linking monomer I, drip 10～30 minutes;
F) 50～80 ℃ of insulations 1～2 hour, are cooled to 10～35 ℃, are neutralized to pH=6～9 with alkali aqueous solution, filter, and collect filtrate, obtain styrene-acrylic emulsion for priming paint, gained emulsion median size 50～100nm.
5. the application of the styrene described in claim 1～3 any one, is applied to the bottom-coating of White Board.
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| CN102875735B (en) * | 2012-09-29 | 2015-03-25 | 上海东升新材料有限公司 | Styrene-acrylic emulsion for surface coating paint of coated paper and preparation method thereof |
| CN103524660A (en) * | 2013-09-28 | 2014-01-22 | 昆山市周市溴化锂溶液厂 | Method for preparing dispersing agent used for grinding inorganic mineral |
| CN105294897A (en) * | 2015-11-01 | 2016-02-03 | 上海晶华胶粘新材料股份有限公司 | Seed emulsion and preparation method thereof |
| CN106893036B (en) * | 2015-12-17 | 2019-11-15 | 上海东升新材料有限公司 | Coating paper surface high smooth styrene-acrylic emulsion and preparation method thereof |
| CN106893037B (en) * | 2015-12-17 | 2019-11-15 | 上海东升新材料有限公司 | Coating paper primary coat high bonding styrene-acrylic emulsion and preparation method thereof |
| US11001703B2 (en) | 2015-12-25 | 2021-05-11 | Kuraray Co., Ltd. | Aqueous emulsion and adhesive using same |
| CN114044845A (en) * | 2021-12-01 | 2022-02-15 | 上海东升新材料有限公司 | Styrene-acrylic latex for papermaking and preparation method thereof |
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| CN101704930A (en) * | 2009-09-29 | 2010-05-12 | 上海东升新材料有限公司 | Styrene-acrylate emulsion for surface coatings of coated paper |
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