CN105002775A - Rheological modifier - Google Patents
Rheological modifier Download PDFInfo
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- CN105002775A CN105002775A CN201510315234.XA CN201510315234A CN105002775A CN 105002775 A CN105002775 A CN 105002775A CN 201510315234 A CN201510315234 A CN 201510315234A CN 105002775 A CN105002775 A CN 105002775A
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- gelatin
- modifying agent
- rheology modifying
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Abstract
The invention discloses a rheological modifier. Preparing raw materials of the rheological modifier comprise gelatin and/or oxidized gelatin, urea or isourea. The preparing raw materials of the rheological modifier comprise the gelatin and/or the oxidized gelatin, the urea or the isourea, ylate emulsion A, ylate emulsion B, a sterilizing agent and water. The rheological property of coating can be effectively improved, the solid content of the coating is improved, the integration between an adhesive agent (a film-forming agent) and pigment in the coating with the high solid content is improved, the thixotropic property of the coating is lowered, the rheological property is improved, the dosage of the film forming agent in the coating can be lowered, the dosage of calcium carbonate is increased, and therefore the cost of the coating can be lowered.
Description
Technical field
The present invention relates to a kind of rheology modifying agent.
Background technology
Coating is the important component part of coated paper, and the solid content of coating is the key factor affecting coating quality, along with the progress of paper technology and equipment, require more and more higher to the solid content of coating, to improve the hiding rare of coating, reduce the vertical migration of water and liquid parts, thus reduce energy consumption for drying, improve rate of drying, and then improve production capacity.
Along with the raising of coating solids, along with the rising of dope viscosity, rheological property declines, coating is caused to produce scratch in coating operations, coating weight is difficult to control, and occurs the problems such as coating injustice, coating defects, and the increase of dope viscosity makes troubles also can to conveying operation.
For the problems referred to above, work out the rheological property that effectively can improve coating, improve the solid content of coating, promote the amalgamation between adhesive (film forming agent) and pigment in high solids coatings, the thixotropy of coating is declined, rheological characteristic increases, and the rheology modifying agent of raw material environmental protection has great importance.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of above prior art: provide a kind of raw material natural environmental-protective, effectively can improve the rheological property of coating, improves the solid content of coating, the thixotropy of coating is declined, the rheology modifying agent that rheological characteristic increases.
Technical solution of the present invention is as follows: a kind of rheology modifying agent, and its raw materials comprises gelatin and/or oxidized gelatin, urea or isourea.
As preferably, the raw materials of described rheology modifying agent is: gelatin and/or oxidized gelatin, urea or isourea, polyacrylate dispersion A, polyacrylate dispersion B, bactericide, water.
As preferably, described rheology modifying agent is prepared by the raw material of following percentage by weight: gelatin and/or oxidized gelatin 2-20%, urea or isourea 19-36%, polyacrylate dispersion A 0.5-7%, polyacrylate dispersion B 0.5-7%, bactericide 0.01-0.1%, all the other are water.
Another conduct is preferred, described rheology modifying agent is prepared by the raw material of following percentage by weight: gelatin and/or oxidized gelatin 7-17%, urea or isourea 20-30%, polyacrylate dispersion A 0.2-1%, polyacrylate dispersion B 0.2-1%, bactericide 0.01-0.1%, all the other are water.
Described gelatin is the one in skin gelatin, bone gelatin, isinglass.Described gelatin can be used alone, and also can be used alone oxidized gelatin, can also by gelatin and oxidized gelatin used in combination with arbitrary proportion.
Described oxidized gelatin is obtained through hydrogen peroxide oxidation by gelatin.
Described oxidized gelatin is prepared through following concrete technology by gelatin: be added to the water by gelatin swelling, the weight ratio of gelatin and water is 1:9, after being heated to 40 DEG C of stirring and dissolving, to add weight be the concentration of 1% of gelatin and water gross weight is the hydrogen peroxide solution of 30g/L, pH=6 is regulated again with the acetum of 100g/L, stir 6 hours at 40 DEG C, then add sodium sulfite and remove unnecessary hydrogen peroxide.
Described polyacrylate dispersion A is Tao Shi DR-72, and polyacrylate dispersion B is Tao Shi DR-73.
Described bactericide is the K40 bactericide of German Shu Mei Co., Ltd.
The invention has the beneficial effects as follows: the present invention effectively can improve the rheological property of coating, improve the solid content of coating, promote the amalgamation between adhesive (film forming agent) and pigment in high solids coatings, the thixotropy of coating is declined, rheological characteristic increases; The consumption of film forming agent in coating can be reduced, increase the consumption of calcium carbonate, thus the cost of coating can be reduced; The rate of drying of unit interval coating can also be improved; Main raw material of the present invention takes from natural material, three-waste free discharge, and selected raw material is more easily degraded at occurring in nature, and relative to the environmental protection more of existing rheology modifying agent, production process is safer.
Detailed description of the invention
With specific embodiment, the present invention is described in further details below, but the present invention is not only confined to following specific embodiment.
Embodiment one
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add water 1040kg, start paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 500kg urea and 250kg gelatin, until completely dissolved, stop heating, drop into 10kg polyacrylate dispersion A, 30kg polyacrylate dispersion B; Add 1kg bactericide after being cooled to 40 DEG C, continue to stir after 3-5 minute, discharging.
Wherein said polyacrylate dispersion A is the DR-72 that Dow Chemical produces.
Described polyacrylate dispersion B is the DR-73 that Dow Chemical produces.
Described bactericide is the K40 bactericide that German Shu Mei Co., Ltd (Schulke & Mayr) produces.
Above raw material is all by commercially available.
Embodiment two
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add 10% oxidized gelatin 1500kg, start paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 450kg urea, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,30kg Dow Chemical production that 10kg Dow Chemical produces; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue to stir after 5-6 minute, discharging.
The oxidized gelatin of described 10% is prepared by following material rate: 100g gelatin is swelling in 900ml water, be heated to 40 DEG C of stirring and dissolving, add the hydrogen peroxide solution 10ml of concentration 30g/L, pH=6 is regulated with the acetum of 100g/L, stir 6 hours at 40 DEG C, then add sodium sulfite and remove unnecessary hydrogen peroxide.
Above raw material is all by commercially available.
Embodiment three
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add water 900kg, open reactor paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 550kg urea and 300kg isinglass, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,5kg Dow Chemical production that 5kg Dow Chemical produces successively; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue to stir after 5-6 minute, discharging.
Above raw material is all by commercially available.
Embodiment four
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add water 900kg, open reactor paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 500kg isourea and 350kg bone gelatin, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,5kg Dow Chemical production that 5kg Dow Chemical produces successively; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue to stir after 5-6 minute, discharging.
Above raw material is all by commercially available.
Embodiment five
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add water 1000kg, open reactor paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 500kg isourea and 300kg bone gelatin, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,6kg Dow Chemical production that 6kg Dow Chemical produces successively; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue stirring after 5 minutes, discharging.
Above raw material is all by commercially available.
Embodiment six
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add water 950kg, open reactor paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 500kg urea and 300kg skin gelatin, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,5kg Dow Chemical production that 5kg Dow Chemical produces successively; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue to stir after 5-6 minute, discharging.
Above raw material is all by commercially available.
Embodiment seven
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add 10% oxidized gelatin 1500kg, start paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 500kg urea, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,8kg Dow Chemical production that 8kg Dow Chemical produces; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue to stir after 5-6 minute, discharging.
The oxidized gelatin of described 10% is prepared by following material rate: 100g gelatin is swelling in 900ml water, be heated to 40 DEG C of stirring and dissolving, add the hydrogen peroxide solution 10ml of concentration 30g/L, pH=6 is regulated with the acetum of 100g/L, stir 6 hours at 40 DEG C, then add sodium sulfite and remove unnecessary hydrogen peroxide.
Above raw material is all by commercially available.
Embodiment eight
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add 10% oxidized gelatin 1500kg, skin gelatin 100kg, start paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 450kg isourea, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,20kg Dow Chemical production that 20kg Dow Chemical produces; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue to stir after 5-6 minute, discharging.
The oxidized gelatin of described 10% is prepared by following material rate: 100g gelatin is swelling in 900ml water, be heated to 40 DEG C of stirring and dissolving, add the hydrogen peroxide solution 10ml of concentration 30g/L, pH=6 is regulated with the acetum of 100g/L, stir 6 hours at 40 DEG C, then add sodium sulfite and remove unnecessary hydrogen peroxide.
Above raw material is all by commercially available.
Embodiment nine
Rheology modifying agent is prepared by following concrete steps:
1, in the reactor of 2000L, add 10% oxidized gelatin 1500kg, isinglass 200kg, start paddle and stir, be heated to 70 DEG C;
2, in aforesaid reaction vessel, drop into 450kg urea, until completely dissolved, stop heating, drop into the Tao Shi DR-73 of Tao Shi DR-72,5kg Dow Chemical production that 15kg Dow Chemical produces; Add the K40 bactericide that 1kg Shu Mei Co., Ltd of Germany (Schulke & Mayr) produces after being cooled to 40 DEG C, continue to stir after 5-6 minute, discharging.
The oxidized gelatin of described 10% is prepared by following material rate: 100g gelatin is swelling in 900ml water, be heated to 40 DEG C of stirring and dissolving, add the hydrogen peroxide solution 10ml of concentration 30g/L, pH=6 is regulated with the acetum of 100g/L, stir 6 hours at 40 DEG C, then add sodium sulfite and remove unnecessary hydrogen peroxide.
Above raw material is all by commercially available.
Experimental example one physical properties of coatings
The rheology modifying agent of preparation in embodiment six is used for coated paper coatings below to test:
From above-mentioned test, the present invention effectively can improve the rheological property of coating, improves the solid content of coating, reduces drying load, can greatly reduce costs.
Respectively to the coating made by the rheology modifying agent adding the embodiment of the present invention one to nine in coating, compared with the reference sample of not adding rheology modifying agent, viscosity is lower, and solid content, pH are all within controlled range.Rheology modifying agent of the present invention adopts gelatin and/or oxidized gelatin to be prepared from, and can reduce the consumption of latex in coating, increases the consumption of calcium carbonate, thus can reduce the cost of coating, can also improve the rate of drying of unit interval coating.
Experimental example two one-tenth paper printability
One, coating preparation and coating:
1, bottom-coating formula
| NO. | Composition | Solid content (%) | This test recipe |
| 1 | C-65 (sx) calcium carbonate | 75 | 100 |
| 2 | N7565 | 100 | 0.03 |
| 3 | PA-40 lubricant | 100 | 0.04 |
| 4 | NaOH(15％) | 15 | 0.16 |
| 5 | The biological latex of SW0520 | 35 | 6.0 |
| 6 | CMC | 11 | 0.42 |
| 7 | Latex latex | 50 | 8.0 |
| 8 | 341K | 50 | 0.3 |
| 9 | LY-K60 | 60 | 0.5 |
| 10 | Busan885 bactericide | / | 0.04 |
Primary coat is general primary coat formula
2, painting coating
Each raw material is added successively, high speed dispersion uniform coating, scraper for coating according to the formulation for coating material of test 2.The normal product of another useful reference sample coating in contrast.
Two, coating squence and one-tenth paper grammes per square metre:
First carry out the coating of primary coat, then carry out the coating of face painting; Two copper becomes paper grammes per square metre to be 200 grams.
Three, printing and one-tenth paper physical property:
1, test machine is Mei Kele plate-making Yin Wu company Heidelberg CD102
2, sky lion ink is used
3, process color sequence is KMCY
4, the speed of a motor vehicle 7000/hour is set
5, equipment adopts the drying mode that dusts
6, paper is tow sides printing
7, become paper to measure three times to average
Four, result:
RI paper strength is tested
| Dry strong W/F (TV16 tri-times) | Wet strong W/F (TV16 once) | |
| Test 2 | 3.6/3.6 | 3.0/2.8 |
| Normal product | 3.8/3.8 | 3.8/3.8 |
A. body paper physical property
B. coated paper physical property
| Project | Unit | 1st time | 2nd time | 3rd time | Average | Normal product |
| Basic weight | Gr/m 2 | 200.6 | 205.1 | 196.7 | 200.8 | 199.5 |
| Thickness | μ | 213 | 222.9 | 208.9 | 214.9 | 216.4 |
| Roughness WS | μm | 1.58 | 1.64 | 1.78 | 1.67 | 2.15 |
| Roughness FS | μm | 1.78 | 1.79 | 1.86 | 1.81 | 2.19 |
| Whiteness WS | ％ISO | 87.21 | 87.35 | 87.4 | 87.32 | 89.49 |
| Whiteness FS | ％ISO | 87.58 | 87.4 | 87.37 | 87.45 | 89.23 |
| Opacity | ％ | 99.41 | 99.73 | 99.36 | 99.50 | 99.43 |
| Moisture content | ％ | 4.6 | 5.3 | 4.5 | 4.8 | 4.2 |
| L | 93.28 | 93.41 | 93.35 | 93.35 | 93.30 | |
| a | 0.02 | 0.05 | 0.15 | 0.07 | 0.57 | |
| b | -2.29 | -2.19 | -2.31 | -2.26 | -4.21 |
C. chromo board physical property
| Project | Unit | 1st time | 2nd time | 3rd time | Average | Normal product |
| Basic weight | Gr/m 2 | 196.3 | 194.7 | 197.7 | 196.23 | 198.5 |
| Thickness | μ | 185.5 | 173.7 | 177.6 | 179 | 178.2 |
| Glossiness WS | ％ | 63.2 | 66 | 68.3 | 65.8 | 71.8 |
| Glossiness FS | ％ | 67.3 | 70.6 | 67.3 | 68.4 | 70.3 |
| Cohesive force | Kg.cm | 1.48 | 1.33 | 1.32 | 1.38 | 1.42 |
| Deflection MD | mN.m | 16.9 | 14.7 | 16.4 | 16 | / |
| Deflection CD | mN.m | 10.3 | 9.7 | 11.4 | 10.5 | / |
| Roughness WS | μm | 0.91 | 0.96 | 0.96 | 0.93 | 1.04 |
| Roughness FS | μm | 0.89 | 0.90 | 0.90 | 0.89 | 1.10 |
| Smoothness WS | ％ISO | 309 | 393 | 337 | 346 | 377 |
| Smoothness FS | ％ISO | 241 | 342 | 329 | 304 | 360 |
| Whiteness WS | ％ | 86.9 | 87.71 | 87.01 | 86.8 | 88.76 |
| Opacity | ％ | 99.41 | 99.39 | 99.41 | 99.40 | / |
| L | 93.08 | 93.05 | 93.07 | 93.07 | 92.86 | |
| a | 0.03 | -0.10 | -0.07 | -0.05 | 0.50 | |
| b | -2.27 | -2.32 | -2.49 | -2.36 | -4.42 |
From above-mentioned experiment, the coating of the high solids content formula adopting rheology modifying agent of the present invention to prepare, become paper printability good through being coated with the two copper 200 grams obtained, with normal product no significant difference, and the normal product of roughness ratio are low, and face sense better.
Claims (10)
1. a rheology modifying agent, is characterized in that: its raw materials comprises gelatin and/or oxidized gelatin, urea or isourea.
2. rheology modifying agent according to claim 1, is characterized in that: the raw materials of described rheology modifying agent is: gelatin and/or oxidized gelatin, urea or isourea, polyacrylate dispersion A, polyacrylate dispersion B, bactericide, water.
3. rheology modifying agent according to claim 2, it is characterized in that: described rheology modifying agent is prepared by the raw material of following percentage by weight: gelatin and/or oxidized gelatin 2-20%, urea or isourea 19-36%, polyacrylate dispersion A 0.5-7%, polyacrylate dispersion B 0.5-7%, bactericide 0.01-0.1%, all the other are water.
4. the rheology modifying agent according to claim 1 or 2 or 3, is characterized in that: described gelatin is the one in skin gelatin, bone gelatin, isinglass.
5. the rheology modifying agent according to claim 1 or 2 or 3, is characterized in that: described oxidized gelatin is obtained through hydrogen peroxide oxidation by gelatin.
6. rheology modifying agent according to claim 5, it is characterized in that: described oxidized gelatin is prepared through following concrete technology by gelatin: gelatin is added to the water swelling, the weight ratio of gelatin and water is 1:9, after being heated to 40 DEG C of stirring and dissolving, to add weight be the concentration of 1% of gelatin and water gross weight is the hydrogen peroxide solution of 30g/L, regulate pH=6 with the acetum of 100g/L again, stir 6 hours at 40 DEG C, then add sodium sulfite and remove unnecessary hydrogen peroxide.
7. the rheology modifying agent according to Claims 2 or 3, is characterized in that: described polyacrylate dispersion A is Tao Shi DR-72, and polyacrylate dispersion B is Tao Shi DR-73.
8. the rheology modifying agent according to Claims 2 or 3, is characterized in that: described bactericide is the K40 bactericide of German Shu Mei Co., Ltd.
9. rheology modifying agent according to claim 2, it is characterized in that: described rheology modifying agent is prepared by the raw material of following percentage by weight: gelatin and/or oxidized gelatin 7-17%, urea or isourea 20-30%, polyacrylate dispersion A 0.2-1%, polyacrylate dispersion B 0.2-1%, bactericide 0.01-0.1%, all the other are water.
10. the application of the liquid modification agent described in claim 1-9, is characterized in that: as papermaking coating white board and copperplate paint for papers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315234.XA CN105002775B (en) | 2014-06-25 | 2015-06-10 | Rheology modifying agent |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410286952.4A CN104074095A (en) | 2014-06-25 | 2014-06-25 | Rheological modifier |
| CN2014102869524 | 2014-06-25 | ||
| CN201510315234.XA CN105002775B (en) | 2014-06-25 | 2015-06-10 | Rheology modifying agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105002775A true CN105002775A (en) | 2015-10-28 |
| CN105002775B CN105002775B (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410286952.4A Pending CN104074095A (en) | 2014-06-25 | 2014-06-25 | Rheological modifier |
| CN201510315234.XA Active CN105002775B (en) | 2014-06-25 | 2015-06-10 | Rheology modifying agent |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410286952.4A Pending CN104074095A (en) | 2014-06-25 | 2014-06-25 | Rheological modifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115887732A (en) * | 2022-12-23 | 2023-04-04 | 稳得希林(沈阳)生物科技有限公司 | Medical gelatin dressing and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984004491A1 (en) * | 1983-05-16 | 1984-11-22 | Dow Chemical Co | High solids latexes for paper coatings |
| US20060121488A1 (en) * | 2003-02-26 | 2006-06-08 | Rothstein Jeffrey D | Glutamate transport modulatory compounds and methods |
| CN101255667A (en) * | 2007-02-27 | 2008-09-03 | 卡吉尔公司 | Coating compositions |
| CN102859068A (en) * | 2010-04-07 | 2013-01-02 | 可泰克斯有限合伙公司 | Use of a latex of styrene particles with a size of 100 nm as rheological agent in a coating slip for papermaking, coating slip and method for obtaining a paper coated with this slip |
-
2014
- 2014-06-25 CN CN201410286952.4A patent/CN104074095A/en active Pending
-
2015
- 2015-06-10 CN CN201510315234.XA patent/CN105002775B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984004491A1 (en) * | 1983-05-16 | 1984-11-22 | Dow Chemical Co | High solids latexes for paper coatings |
| US20060121488A1 (en) * | 2003-02-26 | 2006-06-08 | Rothstein Jeffrey D | Glutamate transport modulatory compounds and methods |
| CN101255667A (en) * | 2007-02-27 | 2008-09-03 | 卡吉尔公司 | Coating compositions |
| CN102859068A (en) * | 2010-04-07 | 2013-01-02 | 可泰克斯有限合伙公司 | Use of a latex of styrene particles with a size of 100 nm as rheological agent in a coating slip for papermaking, coating slip and method for obtaining a paper coated with this slip |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115887732A (en) * | 2022-12-23 | 2023-04-04 | 稳得希林(沈阳)生物科技有限公司 | Medical gelatin dressing and preparation method thereof |
| CN115887732B (en) * | 2022-12-23 | 2024-03-22 | 稳得希林(沈阳)生物科技有限公司 | Medical gelatin dressing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104074095A (en) | 2014-10-01 |
| CN105002775B (en) | 2017-11-17 |
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Effective date of registration: 20220215 Address after: 315033 room 112, building 10, No. 21, Lane 689, Changxing Road, Jiangbei District, Ningbo, Zhejiang 7057 (business trusteeship) Patentee after: Ningbo Huizhen New Material Co.,Ltd. Address before: 315145 No. 818, Qihang South Road, Yinzhou Economic Development Zone, Ningbo, Zhejiang Patentee before: NINGBO TIANYUAN TECHNOLOGY Co.,Ltd. |