CN101805547A - Method for preparing aqueous latex paint by using modified cellulose gum - Google Patents
Method for preparing aqueous latex paint by using modified cellulose gum Download PDFInfo
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- CN101805547A CN101805547A CN201010148038A CN201010148038A CN101805547A CN 101805547 A CN101805547 A CN 101805547A CN 201010148038 A CN201010148038 A CN 201010148038A CN 201010148038 A CN201010148038 A CN 201010148038A CN 101805547 A CN101805547 A CN 101805547A
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Abstract
The invention relates to a method for preparing aqueous latex paint by using modified cellulose gum. The method comprises the following steps of: firstly, adding deionized water into a container, adding the modified cellulose gum with a mass percent of 0.3 to 0.6 into the deionized water with stirring to obtain a mixture, and uniformly stirring the mixture; secondly, adding a PH regulator, a dispersant, a deforming agent and a bactericide into the mixture and uniformly stirring the mixture; thirdly, adding kaolinite, talcpowder, titanium oxide and heavy calcium carbonate into the mixture in turn, adding ethylene glycol with stirring at a middle speed, and uniformly stirring the mixture; fourthly, performing high-speed dispersion for 40 to 60 minutes and grinding the products by using a sand mill; fifthly, slowly adding phenylethylene-acrylic emulsion and the deforming agent into the mixture and stirring the mixture; and finally, adding an leveling agent of acrylic polymers and the deionized water into the mixture. The aqueous latex paint prepared by the method not only guarantees product performance but also has low production cost.
Description
Technical field
The present invention relates to a kind of aqueous latex paint, refer more particularly to a kind of making method of aqueous latex paint.
Background technology
Generally emulsion paint is divided into organic class thickening material and mineral-type thickening material two big classifications with thickening material.Wherein organic class thickening material has three types: natural polymer, derivatived cellulose and synthetic macromolecule.Wherein the main representative products of derivatived cellulose has Natvosol, Vltra tears, methylcellulose gum derivative and Xylo-Mucine.This class thickening material has thickening effectiveness preferably.
In the market, the derivatived cellulose thickening material is to use Natvosol and Xylo-Mucine, and wherein Natvosol accounts for 55-50%, and Xylo-Mucine accounts for 35-40%.Large-scale foreign capitals and private coatings enterprises are mainly used Natvosol, and medium-sized, small-sized coatings enterprises is mainly used Xylo-Mucine.Natvosol costs an arm and a leg, the water tolerance of product and biologically stable are good, the Xylo-Mucine price comparison is cheap, but biologically stable is poor, cleanliness factor and sterilant performance requriements to the coating material production environment are very high, and the coating products that uses common Xylo-Mucine to make thickening material has the risk of great viscosity reduction or loses viscosity.
Modified cellulose gum is that Mierocrystalline cellulose reacts the cellulose ether product that post-modification obtains with aldehydes under certain conditions, mainly be a cellulosic hydroxyl and oxalic dialdehyde the aldehyde radical generation aldol condensation of an end, and oxalic dialdehyde the other end aldehyde radical meet with a hydroxyl on another Mierocrystalline cellulose and the macromolecular structure of a formed unsettled netted stereoscopic after another aldol condensation take place, carry out crosslinked ether of cellulose with oxalic dialdehyde, changed original character, powdered ether of cellulose dispersing property is improved, in water, can not embrace into bulk at once, and the particle of ether of cellulose is very fast under agitation condition scatter in water molecules.
Modified cellulose gum belongs to the thickening material product of cellulose family equally, and it is a lot of that price is lower than Natvosol, only a little higher than carboxymethyl cellulose.But also have at present modified cellulose gum is not applied to method in the emulsion paint.
Summary of the invention
Technical problem to be solved by this invention is: a kind of method of using modified cellulose gum to make aqueous latex paint is provided.
For addressing the above problem, the technical solution used in the present invention is: use modified cellulose gum to make the method for aqueous latex paint, comprise the steps:
(1), to add mass percent in container be the deionized water of 0.1-30%, adds the modified cellulose gum that mass percent is 0.3-0.6% while stirring, and stir, the time is 5-10 minute;
(2), to add mass percent be that the PH conditioning agent of 0.1-0.5%, the dispersion agent that mass percent is 0.1-0.5%, defoamer and the mass percent that mass percent is 0.01-0.5% are the sterilant of 0.1-0.5%, stirred 10-20 minute;
(3), adding the kaolin that mass percent is 0.1-20%, the talcum powder that mass percent is 0.1-10%, titanium dioxide and the mass percent that mass percent is 0.1-5% successively is the water-ground limestone of 0.1-50%, stirring the adding mass percent is the ethylene glycol of 0.1-3%, stirs;
(4), under 2000-4000 rev/min speed, disperseed 40-60 minute the sand milling grinding;
(5), slowly the styrene-propene acid and the mass percent that add mass percent and be 0.1-15% are the defoamer of 0.01-0.5%, stir 10-30 minute;
(6), adding mass percent is that the acrylate copolymer of 0.1-0.5%, flow agent and the mass percent that mass percent is 0.1-0.6% are the deionized water of 0.1-30%;
Described PH conditioning agent is ammoniacal liquor, sodium hydroxide or potassium hydroxide.
Described dispersion agent is poly carboxylic acid sodium, sodium polyacrylate or polyphosphoric acid salt.
Described defoamer is tributyl phosphate or polypropylene glycol.
Described sterilant is to phenol between chlorine or tetradecyl dimethyl benzyl ammonium chloride.
Described flow agent is an alcohol ester 12.
The invention has the beneficial effects as follows: modified cellulose gum is used in water-thinned latex paint as thickening material, the performance of coating products is close with the water-thinned latex paint that uses Natvosol to make as thickening material, be much better than to use the water-thinned latex paint of Xylo-Mucine as the thickening material making, but the price of modified cellulose gum is far below Natvosol, only a little higher than Xylo-Mucine, thus the production cost of water-thinned latex paint saved.Resulting water-thinned latex paint all has a clear superiority in than the resulting water-thinned latex paint of the common Xylo-Mucine of use from aspects such as outward appearance, dispersiveness, operation simplification, water tolerance and biologically stablies.
Embodiment
The method of using modified cellulose gum to make aqueous latex paint to the present invention is described in further detail below.
Embodiment 1
Use modified cellulose gum to make the method for aqueous latex paint, comprise the steps:
(1), to add mass percent in container be 28% deionized water, adds mass percent while stirring and be 0.3% modified cellulose gum, and stir, the time is 5 minutes;
(2), add mass percent be 0.1% ammoniacal liquor, mass percent be 0.2% poly carboxylic acid sodium, mass percent be 0.06% tributyl phosphate and mass percent be 0.2% to phenol between chlorine, stirred 10 minutes;
(3), adding mass percent successively is that 10% kaolin, mass percent are that 4.5% talcum powder, mass percent are that 3% titanium dioxide and mass percent are 32% water-ground limestone, middling speed stirring adding mass percent is 1% ethylene glycol, stirs;
(4), under 2000 rev/mins speed, disperseed 60 minutes the sand milling grinding;
(5), slowly add mass percent and be 8% styrene-propene acid and mass percent and be 0.06% tributyl phosphate, stirred 30 minutes;
(6), adding mass percent is that 0.5% acrylate copolymer, mass percent are that 0.6% alcohol ester 12 and mass percent are 11.48% deionized water;
Embodiment 2
Use modified cellulose gum to make the method for aqueous latex paint, comprise the steps:
(1), to add mass percent in container be 20% deionized water, adds mass percent while stirring and be 0.6% modified cellulose gum, and stir, the time is 10 minutes;
(2), to add mass percent be that 0.3% sodium hydroxide, mass percent are that 0.4% sodium polyacrylate, mass percent are that 0.3% polypropylene glycol and mass percent are 0.3% tetradecyl dimethyl benzyl ammonium chloride, stirred 20 minutes;
(3), adding mass percent successively is that 15% kaolin, mass percent are that 1% talcum powder, mass percent are that 1% titanium dioxide and mass percent are 20% water-ground limestone, middling speed stirring adding mass percent is 0.5% ethylene glycol, stirs;
(4), under 4000 rev/mins speed, disperseed 40 minutes the sand milling grinding;
(5), slowly add mass percent and be 10% styrene-propene acid and mass percent and be 0.3% polypropylene glycol, stirred 20 minutes;
(6), adding mass percent is that 0.2% acrylate copolymer, mass percent are that 0.2% alcohol ester 12 and mass percent are 28.9% deionized water;
Embodiment 3
Use modified cellulose gum to make the method for aqueous latex paint, comprise the steps:
(1), to add mass percent in container be 10% deionized water, adds mass percent while stirring and be 0.4% modified cellulose gum, and stir, the time is 8 minutes;
(2), add mass percent be 0.4% potassium hydroxide, mass percent be 0.3% polyphosphoric acid salt, mass percent be 0.2% tributyl phosphate and mass percent be 0.4% to phenol between chlorine, stirred 15 minutes;
(3), adding mass percent successively is that 18% kaolin, mass percent are that 8% talcum powder, mass percent are that 4% titanium dioxide and mass percent are 30% water-ground limestone, middling speed stirring adding mass percent is 3% ethylene glycol, stirs;
(4), under 3000 rev/mins speed, disperseed 50 minutes the sand milling grinding;
(5), slowly add mass percent and be 15% styrene-propene acid and mass percent and be 0.5% tributyl phosphate, stirred 20 minutes;
(6), adding mass percent is that 0.4% acrylate copolymer, mass percent are that 0.4% alcohol ester 12 and mass percent are 9% deionized water;
(7), in the time of 24 ℃, place test emulsion paint coating pH and viscosity KU value after 3 hours.
According to the method described above, modified cellulose gum is replaced to Natvosol respectively and Xylo-Mucine makes other two kinds of aqueous latex paints, with the pH value and the record of three kinds of aqueous latex paints of pH meter mensuration, with the KU value and the record of three kinds of aqueous latex paints of stormer viscosity meter STM-III test.Detected result sees the following form:
| The sample title | The aqueous latex paint that uses modified cellulose gum to make | The aqueous latex paint that uses Natvosol to make | The aqueous latex paint that uses Xylo-Mucine to make |
| ??KU | ??101 | ??103 | ??106 |
| ??pH | ??8.22 | ??8.21 | ??8.41 |
The experiment of emulsion paint coating thermostability
Coating sample is packed in the transparent sealed vessel, place to take out after 15 days to observe in 50 ± 2 ℃ baking oven and have or not branch water, have or not precipitation, be cooled to room temperature test pH and KU, detected result sees the following form:
| The sample title | The aqueous latex paint that uses modified cellulose gum to make | The aqueous latex paint that uses Natvosol to make | The aqueous latex paint that uses Xylo-Mucine to make |
| ??KU | ??106 | ??107 | ??118 |
| ??pH | ??8.18 | ??8.24 | ??8.56 |
| Divide the water height | ??4.0 | ??3.5 | ??12.0 |
| Have or not precipitation | Do not have | Do not have | Do not have |
The result shows: the aqueous latex paint that uses modified cellulose gum to make, and performance is approaching with the aqueous latex paint that uses Natvosol to make, but the price of modified cellulose gum is far below Natvosol, thus saved cost; The aqueous latex paint that uses modified cellulose gum to make all has a clear superiority in than the resulting water-thinned latex paint of the common Xylo-Mucine of use from aspects such as outward appearance, dispersiveness, operation simplification, water tolerance and biologically stablies.
Claims (6)
1. use modified cellulose gum to make the method for aqueous latex paint, comprise the steps: it is characterized in that:
(1), to add mass percent in container be the deionized water of 0.1-30%, adds the modified cellulose gum that mass percent is 0.3-0.6% while stirring, and stir, the time is 5-10 minute;
(2), to add mass percent be that the PH conditioning agent of 0.1-0.5%, the dispersion agent that mass percent is 0.1-0.5%, defoamer and the mass percent that mass percent is 0.01-0.5% are the sterilant of 0.1-0.5%, stirred 10-20 minute;
(3), adding the kaolin that mass percent is 0.1-20%, the talcum powder that mass percent is 0.1-10%, titanium dioxide and the mass percent that mass percent is 0.1-5% successively is the water-ground limestone of 0.1-50%, stirring the adding mass percent is the ethylene glycol of 0.1-3%, stirs;
(4), under 2000-4000 rev/min speed, disperseed 40-60 minute the sand milling grinding;
(5), slowly the styrene-propene acid and the mass percent that add mass percent and be 0.1-15% are the defoamer of 0.01-0.5%, stir 10-30 minute;
(6), adding mass percent is that the acrylate copolymer of 0.1-0.5%, flow agent and the mass percent that mass percent is 0.1-0.6% are the deionized water of 0.1-30%;
2. use modified cellulose gum according to claim 1 is made the method for aqueous latex paint, and it is characterized in that: described PH conditioning agent is ammoniacal liquor, sodium hydroxide or potassium hydroxide.
3. use modified cellulose gum according to claim 1 and 2 is made the method for aqueous latex paint, and it is characterized in that: described dispersion agent is poly carboxylic acid sodium, sodium polyacrylate or polyphosphoric acid salt.
4. use modified cellulose gum according to claim 1 and 2 is made the method for aqueous latex paint, and it is characterized in that: described defoamer is tributyl phosphate or polypropylene glycol.
5. use modified cellulose gum according to claim 1 and 2 is made the method for aqueous latex paint, it is characterized in that: described sterilant is to phenol between chlorine or tetradecyl dimethyl benzyl ammonium chloride.
6. use modified cellulose gum according to claim 1 and 2 is made the method for aqueous latex paint, and it is characterized in that: described flow agent is an alcohol ester 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010148038A CN101805547A (en) | 2010-04-07 | 2010-04-07 | Method for preparing aqueous latex paint by using modified cellulose gum |
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| CN201010148038A CN101805547A (en) | 2010-04-07 | 2010-04-07 | Method for preparing aqueous latex paint by using modified cellulose gum |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10196318B2 (en) * | 2014-02-28 | 2019-02-05 | Croda International Plc | Micronutrient compositions |
| CN109896776A (en) * | 2017-12-11 | 2019-06-18 | 乐天精密化学株式会社 | Mineral varnish composition |
-
2010
- 2010-04-07 CN CN201010148038A patent/CN101805547A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10196318B2 (en) * | 2014-02-28 | 2019-02-05 | Croda International Plc | Micronutrient compositions |
| US20190112239A1 (en) * | 2014-02-28 | 2019-04-18 | Croda International Plc | Micronutrient compositions |
| US10822286B2 (en) * | 2014-02-28 | 2020-11-03 | Croda International Plc | Micronutrient compositions |
| CN109896776A (en) * | 2017-12-11 | 2019-06-18 | 乐天精密化学株式会社 | Mineral varnish composition |
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Open date: 20100818 |