CN105256651A - Fluorescent whitening agent dispersion liquid used for paper coating whitening and preparation method therefor - Google Patents
Fluorescent whitening agent dispersion liquid used for paper coating whitening and preparation method therefor Download PDFInfo
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- CN105256651A CN105256651A CN201510583279.5A CN201510583279A CN105256651A CN 105256651 A CN105256651 A CN 105256651A CN 201510583279 A CN201510583279 A CN 201510583279A CN 105256651 A CN105256651 A CN 105256651A
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Abstract
The invention belongs to the fluorescent whitening agent dispersion liquid technology field, and concretely relates to a fluorescent whitening agent dispersion liquid used for paper coating whitening and a preparation method therefor. The dispersion liquid comprises a fluorescent whitening agent solution, a dispersant, a pigment, a main binder, an auxiliary binder, an antiseptic, an antifoaming agent and a pH conditioning agent. The fluorescent whitening agent solution, the dispersant, the pigment and the main binder are added in a mixer and stirred, a mixing chamber is cooled, stirring is carried out continuously, the auxiliary binder, the antiseptic and the antifoaming agent are added, after the pH value is adjusted to 8.6 by utilization of the pH conditioning agent, stirring is stopped, and a fluorescent whitening agent dispersion liquid used for paper coating is obtained. The dispersion liquid is advantageous in that the solid content is high, the viscosity is low, the dispersion liquid can be applied in paper coating whitening, and the paper whiteness raising effects are obvious.
Description
Technical field
The invention belongs to fluorescent brightening agent dispersing liquid technical field, be specifically related to a kind of fluorescent brightening agent dispersing liquid brightened for Paper Coating and preparation method thereof.
Background technology
Current paper grade (stock) fluorescent whitening agent majority belongs to the two triazines fluorescent whitening agent of talan, the workshop section's classification used in papermaking according to fluorescent whitening agent, wet end fluorescent whitening agent and cadre's fluorescent whitening agent can be divided into, wet end fluorescent whitening agent, for being added in paper pulp, brightens in namely starching paper; Cadre is use in paper for surface sizing and coating with fluorescent whitening agent.
The object of Paper Coating processing is by fibroplastic uneven and have on the surface of more macroporous common paper, cover one deck by molecular coating ink being had to good absorption of fine particles, to obtain that there is good uniformity and the paper of smoothness.Can also be improved the glossiness of paper by coating, improve stability and the opacity of paper, these characteristics all increase along with the increase of coating weight.Also for ease of the high whiteness pursuing paper, paper whiteness after coating is also very important, and way conventional at present adds fluorescent whitening agent in the coating of coating.
Patent of invention CN201210151848 provides a kind of Paper Coating large arch dam polyvinylidene chloride coating and preparation method thereof, this coating is mixed with by the raw material containing following weight content: vinylidene chloride 40 ~ 58%, acrylic ester monomer 0.01 ~ 2%, functional monomer 0.01 ~ 2%, oxidized form initator 0.005 ~ 0.02%, reduced form initator 0.005-0.05%, emulsifying agent 0.1 ~ 3%, electrolyte 0.01 ~ 0.1%, deionized water 38-45%.The physical properties such as paper blocking oxygen, steam and heat seal strength can be improved after this coatings paper, can packaging for foodstuff be widely used in.
Patent of invention CN201210400107 discloses a kind of liquid fluorescent whitening agent brightened for paper and preparation method thereof, relates to paper surface-sizing and coating special assistant.Preparation method's step is: be dispersed in by Cyanuric Chloride in ice water solution, adds with sulfonic amine derivant, makes pH value control 3 ~ 4 with acid binding agent, reaction terminates rear intensification, and adding DSD acid, is 6 ~ 7 by acid binding agent adjust ph, then 40 ~ 45 DEG C are warming up to, add amino alcohol or amino alkane after reaction terminates, by acid binding agent adjust ph 8.5 ~ 9.3, be warming up to 75 ~ 100 DEG C, reaction end is not changed to standard with pH, with nanofiltration membrane, after carrying out post processing, get product.This invention product good water solubility, yellowing point is high, acid resistance good, whiteness is high, coloured light is good, and consumption is few; Discharge without acid gas in production process; Easy to use, stability is high.But its focal point is liquid fluorescent whitening agent brightened for paper and preparation method thereof, but this summary of the invention does not relate to and is directly used in fluorescent brightening agent dispersing liquid that Paper Coating brightens and preparation method thereof.
Summary of the invention
The object of this invention is to provide that a kind of solid content is high, viscosity is low, the fluorescent brightening agent dispersing liquid that Paper Coating brightens can be directly used in.
The preparation method of the fluorescent brightening agent dispersing liquid that another goal of the invention of the present invention provides this Paper Coating to brighten.
For achieving the above object, the technical solution adopted in the present invention is:
For the fluorescent brightening agent dispersing liquid that Paper Coating brightens, comprise the component of following parts by weight:
Optical brightener solutions 100 parts, dispersant 1 ~ 2 part, pigment 90 ~ 110 parts, main adhesive 8 ~ 14 parts, auxiliary adhesive 4 ~ 8 parts, preservative agent 0.5 ~ 1.5 part, defoamer 0.5 ~ 1.0 part, pH adjusting agent 0.1 ~ 0.5 part.
Prepare a method for the described fluorescent brightening agent dispersing liquid brightened for Paper Coating, comprise the following steps:
(1) optical brightener solutions of 100 parts is put into the mixing chamber of high-speed mixer, rotate under the speed of 300 revs/min and stir;
(2) while rotation is stirred, in mixing chamber, then add the dispersant of 1 ~ 2 part, and dispersant is uniformly dispersed in optical brightener solutions;
(3) mixing speed of high-speed mixer being adjusted to rotating speed is that 1500 revs/min of continuation are stirred, and by the temperature to 70 in mixing chamber DEG C, starts high-speed stirred after 20 minutes while keeping temperature;
(4) continue the time remaining of 90 ~ 110 parts of pigment with 10 ~ 12 minutes to add while stirring, continue stirring 10 minutes;
(5) continue the main adhesive adding 8 ~ 14 parts with the time remaining of 6 ~ 8 minutes more while stirring, after main adhesive adds, continue high-speed stirred after 10 minutes, mixing chamber is lowered the temperature;
(6) when temperature is down to 50 DEG C, add the auxiliary adhesive of 4 ~ 8 parts, continue stirring after 5 minutes, add the preservative agent of 0.5 ~ 1.5 part, the defoamer of 0.5 ~ 1.0 part again, continue stirring after 5 minutes, add 0.1-0.5 part pH adjusting agent while stirring, the pH value of adjustment dispersion liquid is stop after 8.4 ~ 8.9 stirring, and is the fluorescent brightening agent dispersing liquid for Paper Coating.
Described optical brightener solutions is any one or multiple mixture in C.I. fluorescent whitening agent 71 aqueous solution, C.I. fluorescent whitening agent 85 aqueous solution, C.I. fluorescent whitening agent 113 aqueous solution, C.I. fluorescent whitening agent 264 aqueous solution, C.I. fluorescent whitening agent 357 aqueous solution.
Described dispersant is the mixture of Sodium Polyacrylate and calgon, and the ratio of Sodium Polyacrylate and calgon is 1:1.
Described pigment is any one or multiple mixture in kaolin, grinding calcium carbonate, aluminium hydroxide, titanium dioxide, talcum powder, silica, zinc oxide.
Described main adhesive is the mixture of polyvinyl alcohol or poly-vinegar ethene and converted starch, and the ratio of polyvinyl alcohol or poly-vinegar ethene and converted starch is 4:1 ~ 8:1.
Described auxiliary adhesive is the mixture of casein and carboxymethyl cellulose, and the ratio of casein and carboxymethyl cellulose is 6:1.
Described preservative agent is BIT (BTC) or 5-chloro-2-methyl-4-different plug azoles quinoline-3-ketone (S
8) in the mixture of any one or two kinds.
Described defoamer is any one in octanol or sec-octyl alcohol.
Described pH adjusting agent is any one in NaOH or sodium carbonate
Compared with prior art, the fluorescent brightening agent dispersing liquid of gained of the present invention has that solid content is high, viscosity is low, can directly apply to Paper Coating brightens, to the advantage such as whiteness successful improving paper.
Detailed description of the invention
Embodiment 1:
The present embodiment is about a kind of fluorescent brightening agent dispersing liquid brightened for Paper Coating, comprises the component of following parts by weight:
C.I. 4 parts, mixture, BIT 0.5 part, octanol 0.5 part, 0.1 part, the NaOH of each 0.5 part of fluorescent whitening agent 357 aqueous solution 100 parts, Sodium Polyacrylate and calgon, kaolin 90 parts, the mixture gathering vinegar ethene 6.4 parts and converted starch 1.6 parts, casein and carboxymethyl cellulose.
Prepare a method for the above-mentioned fluorescent brightening agent dispersing liquid brightened for Paper Coating, comprise the following steps:
(1) C.I. fluorescent whitening agent 357 aqueous solution of 100 parts is put into the mixing chamber of high-speed mixer, rotate under the speed of 300 revs/min and stir;
(2) while rotation is stirred, in mixing chamber, then add Sodium Polyacrylate and each 0.5 part of calgon, and Sodium Polyacrylate and calgon are uniformly dispersed in optical brightener solutions;
(3) mixing speed of high-speed mixer being adjusted to rotating speed is that 1500 revs/min of continuation are stirred, and by the temperature to 70 in mixing chamber DEG C, starts high-speed stirred after 20 minutes while keeping temperature;
(4) continue the time remaining of 90 parts of kaolin with 10 minutes to add while stirring, continue stirring 10 minutes;
(5) time remaining continued with 6 minutes adds the poly-vinegar ethene of 8 parts and the mixture of converted starch while stirring again, continues high-speed stirred after 10 minutes, lower the temperature to mixing chamber after main adhesive adds;
(6) when temperature is down to 50 DEG C, add the casein of 4 parts and the mixture of carboxymethyl cellulose, continue stirring after 5 minutes, add 0.5 part 1 again, 2-benzisothiazole-3-ketone, the octanol of 0.5 part, continue stirring after 5 minutes, add 0.1 part of NaOH while stirring, the pH value of adjustment dispersion liquid is stop after 8.4 stirring, and is the fluorescent brightening agent dispersing liquid for Paper Coating.
Embodiment 2
The present embodiment is about a kind of fluorescent brightening agent dispersing liquid brightened for Paper Coating, comprises the component of following parts by weight:
C.I. 8 parts, mixture, BIT 1.5 parts, octanol 1.0 parts, 0.5 part, the NaOH of the mixture of each 1 part of part of fluorescent whitening agent 357 aqueous solution 100 parts, Sodium Polyacrylate and calgon, kaolin 110 parts, poly-vinegar ethene 11.2 parts and converted starch 2.8 parts, casein and carboxymethyl cellulose.
Prepare a method for the above-mentioned fluorescent brightening agent dispersing liquid brightened for Paper Coating, comprise the following steps:
(1) C.I. fluorescent whitening agent 357 aqueous solution of 100 parts is put into the mixing chamber of high-speed mixer, rotate under the speed of 300 revs/min and stir;
(2) while rotation is stirred, in mixing chamber, then add Sodium Polyacrylate and each 1 part of calgon, and Sodium Polyacrylate and calgon are uniformly dispersed in optical brightener solutions;
(3) mixing speed of high-speed mixer being adjusted to rotating speed is that 1500 revs/min of continuation are stirred, and by the temperature to 70 in mixing chamber DEG C, starts high-speed stirred after 20 minutes while keeping temperature;
(4) continue the time remaining of 110 parts of kaolin with 12 minutes to add while stirring, continue stirring 10 minutes;
(5) time remaining continued with 8 minutes adds the poly-vinegar ethene of 14 parts and the mixture of converted starch while stirring again, continues high-speed stirred after 10 minutes, lower the temperature to mixing chamber after main adhesive adds;
(6) when temperature is down to 50 DEG C, add the casein of 8 parts and the mixture of carboxymethyl cellulose, continue stirring after 5 minutes, add 1.5 parts 1 again, 2-benzisothiazole-3-ketone, the octanol of 1.0 parts, continue stirring after 5 minutes, add 0.5 part of NaOH while stirring, the pH value of adjustment dispersion liquid is stop after 8.9 stirring, and is the fluorescent brightening agent dispersing liquid for Paper Coating.
Embodiment 3
The present embodiment is about a kind of fluorescent brightening agent dispersing liquid brightened for Paper Coating, comprises the component of following parts by weight:
C.I. 6 parts, mixture, BIT 1 part, octanol 0.8 part, 0.3 part, the NaOH of each 0.75 part of fluorescent whitening agent 357 aqueous solution 100 parts, Sodium Polyacrylate and calgon, kaolin 100 parts, the mixture gathering vinegar ethene 9.6 parts and converted starch 2.4 parts, casein and carboxymethyl cellulose.
Prepare a method for the above-mentioned fluorescent brightening agent dispersing liquid brightened for Paper Coating, comprise the following steps:
(1) C.I. fluorescent whitening agent 357 aqueous solution of 100 parts is put into the mixing chamber of high-speed mixer, rotate under the speed of 300 revs/min and stir;
(2) while rotation is stirred, in mixing chamber, then add Sodium Polyacrylate and each 0.75 part of calgon, and Sodium Polyacrylate and calgon are uniformly dispersed in optical brightener solutions;
(3) mixing speed of high-speed mixer being adjusted to rotating speed is that 1500 revs/min of continuation are stirred, and by the temperature to 70 in mixing chamber DEG C, starts high-speed stirred after 20 minutes while keeping temperature;
(4) continue the time remaining of 100 parts of kaolin with 11 minutes to add while stirring, continue stirring 10 minutes;
(5) time remaining continued with 7 minutes adds the poly-vinegar ethene of 12 parts and the mixture of converted starch while stirring again, continues high-speed stirred after 10 minutes, lower the temperature to mixing chamber after main adhesive adds;
(6) when temperature is down to 50 DEG C, add the casein of 6 parts and the mixture of carboxymethyl cellulose, continue stirring after 5 minutes, add 1 part 1 again, 2-benzisothiazole-3-ketone, the octanol of 0.8 part, continue stirring after 5 minutes, add 0.3 part of NaOH while stirring, the pH value of adjustment dispersion liquid is stop after 8.6 stirring, and is the fluorescent brightening agent dispersing liquid for Paper Coating.
C.I. fluorescent whitening agent 357 aqueous solution in above-described embodiment can also be C.I. fluorescent whitening agent 71 aqueous solution with optical brightener solutions, C.I. fluorescent whitening agent 85 aqueous solution, C.I. fluorescent whitening agent 113 aqueous solution, C.I. fluorescent whitening agent 264 aqueous solution, in any one or multiple mixture replace.
The mixture that kaolin in above-described embodiment can also use any one or kaolin in grinding calcium carbonate, aluminium hydroxide, titanium dioxide, talcum powder, silica, zinc oxide, grinding calcium carbonate, aluminium hydroxide, titanium dioxide, talcum powder, silica, zinc oxide multiple replaces.
Poly-vinegar ethene in above-described embodiment and converted starch can also replace with the mixture of polyvinyl alcohol and converted starch, and the ratio of polyvinyl alcohol and converted starch is 4:1 ~ 8:1.
BIT in above-described embodiment can also replace with 5-chloro-2-methyl-4-different plug azoles quinoline-3-ketone or the mixture of BIT and 5-chloro-2-methyl-4-different plug azoles quinoline-3-ketone replaces.
Octanol in above-described embodiment can also replace with sec-octyl alcohol.
NaOH in above-described embodiment can also replace with sodium carbonate.
Use the obtained fluorescent brightening agent dispersing liquid of above each embodiment to carry out Paper Coating experiment, 70g/m selected by body paper
2wood-free paper, coating apparatus adopts lab coater, and coating weight control is at 10g/m
2one side is coated with.Concrete operations are as follows: by body paper by coating machine requirement smooth be placed on coating machine, pressure idler roller, again applicator roll is pressed in top of form, put down fixed-wing, draw a certain amount of fluorescent brightening agent dispersing liquid prepared with suction pipe, be evenly distributed in the front end of paper, start button, applicator roll is passed by entire paper sample, and Paper Coating completes.Then rapid not dry coated paper is put into 105 DEG C of electric heating constant-temperature blowing drying boxes, dry and take out after 5 seconds, namely complete the drying of coated paper.
According to GB/T7974-2002 " paper and cardboard measuring brightness method (diffusion/normal beam technique) " and HG/T3971-2007 " detect body paper and execute, be coated with the whiteness performance of rear pattern ", coated paper is through constant temperature, constant humidity after 24 hours, all meet by spectrum and geometrical property the HunterlabUltraScanPRO spectrophotometric color measurement instrument that GB/T7973 requires and carry out the test of coated paper whiteness, the 457Bt value of record coated paper and WICIE value.
Can find out from above data: the fluorescent brightening agent dispersing liquid prepared by the present invention, viscosity is low all lower than 200mPaS, and solid content, all higher than 50%, is applied to Paper Coating, and 457Bt promotes more than 3.4, WICIE and promotes more than 1.2 compared with body paper.
Claims (10)
1. for the fluorescent brightening agent dispersing liquid that Paper Coating brightens, it is characterized in that: the component comprising following parts by weight:
Optical brightener solutions 100 parts, dispersant 1 ~ 2 part, pigment 90 ~ 110 parts, main adhesive 8 ~ 14 parts, auxiliary adhesive 4 ~ 8 parts, preservative agent 0.5 ~ 1.5 part, defoamer 0.5 ~ 1.0 part, pH adjusting agent 0.1 ~ 0.5 part.
2. prepare a method for the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, it is characterized in that: comprise the following steps:
(1) optical brightener solutions of 100 parts is put into the mixing chamber of high-speed mixer, rotate under the speed of 300 revs/min and stir;
(2) while rotation is stirred, in mixing chamber, then add the dispersant of 1 ~ 2 part, and dispersant is uniformly dispersed in optical brightener solutions;
(3) mixing speed of high-speed mixer being adjusted to rotating speed is that 1500 revs/min of continuation are stirred, and is spent by the temperature to 70 in mixing chamber, starts high-speed stirred after 20 minutes while keeping temperature;
(4) continue the time remaining of 90 ~ 110 parts of pigment with 10 ~ 12 minutes to add while stirring, continue stirring 10 minutes;
(5) continue the main adhesive adding 8 ~ 14 parts with the time remaining of 6 ~ 8 minutes more while stirring, after main adhesive adds, continue high-speed stirred after 10 minutes, mixing chamber is lowered the temperature;
(6) when temperature is down to 50 degree, add the auxiliary adhesive of 4 ~ 8 parts, continue stirring after 5 minutes, add the preservative agent of 0.5 ~ 1.5 part, the defoamer of 0.5 ~ 1.0 part again, continue stirring after 5 minutes, add qs pH adjuster while stirring, the pH value of adjustment dispersion liquid is stop after 8.4 ~ 8.9 stirring, and is the fluorescent brightening agent dispersing liquid for Paper Coating.
3. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, is characterized in that: described optical brightener solutions is any one or multiple mixture in C.I. fluorescent whitening agent 71 aqueous solution, C.I. fluorescent whitening agent 85 aqueous solution, C.I. fluorescent whitening agent 113 aqueous solution, C.I. fluorescent whitening agent 264 aqueous solution, C.I. fluorescent whitening agent 357 aqueous solution.
4. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, it is characterized in that: described dispersant is the mixture of Sodium Polyacrylate and calgon, and the ratio of Sodium Polyacrylate and calgon is 1:1.
5. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, is characterized in that: described pigment is any one or multiple mixture in kaolin, grinding calcium carbonate, aluminium hydroxide, titanium dioxide, talcum powder, silica, zinc oxide.
6. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, it is characterized in that: described main adhesive is the mixture of polyvinyl alcohol or poly-vinegar ethene and converted starch, and the ratio of polyvinyl alcohol or poly-vinegar ethene and converted starch is 4:1 ~ 8:1.
7. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, it is characterized in that: the mixture that described auxiliary adhesive is, and the ratio of casein and carboxymethyl cellulose is 6:1.
8. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, is characterized in that: described preservative agent is BIT (BTC) or 5-chloro-2-methyl-4-different plug azoles quinoline-3-ketone (S
8) in the mixture of any one or two kinds.
9. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, is characterized in that: described defoamer is any one in octanol or sec-octyl alcohol.
10. the fluorescent brightening agent dispersing liquid brightened for Paper Coating according to claim 1, is characterized in that: described pH adjusting agent is any one in NaOH or sodium carbonate.
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| CN201510583279.5A CN105256651A (en) | 2015-09-14 | 2015-09-14 | Fluorescent whitening agent dispersion liquid used for paper coating whitening and preparation method therefor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087566A (en) * | 2016-06-20 | 2016-11-09 | 广州聚注专利研发有限公司 | A kind of papermaking brightening agent and preparation method |
| CN111036115A (en) * | 2018-10-12 | 2020-04-21 | 山西晋光化工有限公司 | Fluorescent whitening agent dispersion liquid manufacturing equipment for paper coating whitening |
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| JPH08209591A (en) * | 1995-01-30 | 1996-08-13 | New Oji Paper Co Ltd | Matte coated paper for printing |
| CN1650069A (en) * | 2002-05-03 | 2005-08-03 | 伊梅里斯矿物有限公司 | Paper coating pigments |
| CN101468971A (en) * | 2007-12-24 | 2009-07-01 | 深圳泛胜塑胶助剂有限公司 | Crystal form transformation technique for triazinyl amino diphenyl ethylene fluorescent whitening agent |
| CN103469690A (en) * | 2013-09-17 | 2013-12-25 | 山西青山化工有限公司 | Method for improving whitening efficiency of fluorescent whitening agent on paper surface |
| CN104177864A (en) * | 2014-08-28 | 2014-12-03 | 山西青山化工有限公司 | Liquid fluorescent whitening agent |
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|---|---|---|---|---|
| CN1107918A (en) * | 1993-05-08 | 1995-09-06 | 希巴-盖吉股份公司 | Fluorescent whitening of paper |
| JPH08209591A (en) * | 1995-01-30 | 1996-08-13 | New Oji Paper Co Ltd | Matte coated paper for printing |
| CN1650069A (en) * | 2002-05-03 | 2005-08-03 | 伊梅里斯矿物有限公司 | Paper coating pigments |
| CN101468971A (en) * | 2007-12-24 | 2009-07-01 | 深圳泛胜塑胶助剂有限公司 | Crystal form transformation technique for triazinyl amino diphenyl ethylene fluorescent whitening agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087566A (en) * | 2016-06-20 | 2016-11-09 | 广州聚注专利研发有限公司 | A kind of papermaking brightening agent and preparation method |
| CN111036115A (en) * | 2018-10-12 | 2020-04-21 | 山西晋光化工有限公司 | Fluorescent whitening agent dispersion liquid manufacturing equipment for paper coating whitening |
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Application publication date: 20160120 |