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Iron oxide red aqueous color paste for wood coating and preparation thereof

A technology of iron oxide red and water-based color paste, applied in the direction of pigment paste, etc., can solve the problems of high pigment density, poor dispersion stability, precipitation and agglomeration, etc., achieve good thixotropic performance, avoid adverse effects, and be compatible sex effect

Inactive Publication Date: 2011-08-10
DONGGUAN DAXING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main problem of the existing iron oxide red water-based color paste is that the storage stability is relatively poor, and water separation, precipitation and agglomeration may occur in a short period of time; power loss etc.
The main reason is that the density of iron oxide red pigment is relatively high, and it is easy to sink under the action of gravity; the second is that the dispersion stability is not good, and the pigment particles are agglomerated
In the final analysis, the selection and ratio of raw materials for iron oxide red water-based color paste are not reasonable, and the preparation process also has deficiencies.

Method used

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  • Iron oxide red aqueous color paste for wood coating and preparation thereof
  • Iron oxide red aqueous color paste for wood coating and preparation thereof
  • Iron oxide red aqueous color paste for wood coating and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: Preparation of iron oxide red water-based color paste

[0051] Color paste formula:

[0052]

[0053] Preparation process: Mix 650g of H130, 4.4g of DC-35B, and 20g of deionized water evenly, heat it under stirring, and keep it at 80°C for 1.5h; after cooling down to room temperature, disperse it in a high-speed disperser at 3000rpm for 15min to obtain Surface modified iron oxide red pigment. Place the dispersing tank containing 320g deionized water under the high-speed dispersing machine, turn on 1500rpm, add 5.0g propylene glycol, 4.0g FoamStar A34, 2.4g Dehydran 1620 and 22.0g Hydropalat 140, 16.0gSN-dispersant 5020, mix for 10min; To 1000rpm, slowly add the above-mentioned surface-modified iron oxide red pigment, increase to 3000rpm after adding, disperse for 30min; reduce to 1500rpm, add 1.2g SN-thickener 612, 8.5g lithium magnesium silicate, 2.4g Alex F-252 Mix with 2g FoamStarA34 and 1.2g Dehydran1620 for 15 minutes; stop the machine, let it st...

Embodiment 2

[0060] Embodiment 2: Preparation of iron oxide red dark water-based wood coating

[0061] Coating Formulation:

[0062]

[0063] Preparation process: Place the dispersing tank containing 760g NeoPacE-114 under the high-speed dispersing machine, adjust the speed to 1500rpm, add 70g deionized water, 15g propylene glycol and 25g EFC 300 uniform mixture, mix for 5min; add 1.0g FoamStarA34, 2.0g Dehydran1620, 10.0g Hydropalat140, 20.0g BYK190, mix for 5min; add 100.0gDH-600A, 4.0g magnesium lithium silicate, 40.0g iron oxide red water-based color paste of Example 1 of the present invention, disperse at 2500rpm for 45min; 1500rpm, add 2.0g Perenol 1097A, 5.0g Perenol S5, disperse for 10min; then add 0.5gFoamStarA34, 0.5g Dehydran1620, 1.0g DSX 3800, disperse for 10min; stand for defoaming, filter with 200 mesh screen to get about 1000g iron oxide red Dark water-based paint.

[0064] Main performance indicators (measured according to GB / T23999-2009):

[0065] color dark red

...

Embodiment 3

[0075] Embodiment 3: Preparation of iron oxide red light-colored water-based wood coating

[0076] Coating Formulation:

[0077]

[0078] Preparation process: Place the dispersion tank containing 740g UC81 under the high-speed disperser, adjust the speed to 1500rpm, add a uniform mixture of 70g deionized water, 15g propylene glycol and 25g EFC 300, mix for 5min; add 3.0g DispelairCF707, 25g Dispers 715W, mixed for 5min; added 120.0g R-706, 4.5g lithium magnesium silicate, 50.0g iron oxide red water-based color paste of Example 1 of the present invention, dispersed for 45min at 2500rpm; adjusted the speed to 1500rpm, added 2.0g Perenol1097A, 5.0g BYK 380N, disperse for 10 minutes; add 1.0g Dispelair CF707, 0.8g DSX 3800, disperse for 10 minutes; stand for defoaming, filter with 200-mesh sieve, and obtain about 1000g iron oxide red light-colored water-based paint.

[0079] Main performance indicators (measured according to GB / T23999-2009):

[0080] color light red

[0081]...

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Abstract

The invention relates to an iron oxide red aqueous color paste for wood coating, which comprises the following components in percentage by weight: 50-70% of iron oxide red pigment, 0.5-2.0% of surface modifier, 2.0-8.0% of wetting dispersant, 0.5-2.0% of defoamer, 0.05-0.2% of thickening agent, 0.5-2.0% of thixotropic agent, 0.1-0.5% of preservative and 20-40% of water. The color paste solid content is more than or equal to 60%, and fineness is less than 20 meshes; the color paste has strong tinting strength, stable color strength, high thixotropy and big viscosity during standby; viscosity is lowered when cutting; the color paste can be stably stored and does not have the defects of water distribution, clotting and the like; the color paste does not contain resin, can be compatible with various polymer emulsions and avoids the phenomena of flooding and floating of coating; the color paste takes water as dispersion medium and protects environment. The preparation method is as follows:firstly, preparing the surface-modified iron oxide red pigment powder, then preparing color paste predisperse body by the iron oxide red pigment powder, water and other assistants, and finally grinding to obtain the iron oxide red aqueous color paste. The color paste is used for mixing scarlet and light red aqueous wood true color coating and can be mixed with aqueous yellow color paste and aqueous blue color paste to prepare aqueous wood true color coatings with other colors.

Description

technical field [0001] The invention relates to a water-based color paste, in particular to an iron oxide red water-based color paste used for preparing wood solid-color paints and a preparation method thereof. Background technique [0002] A development trend in the coatings industry is that solid-color coatings use a new process of colorant toning to replace the traditional process of directly mixing and grinding pigments. At present, not only solvent-based paints are widely used for color matching of solvent-based colorants, but also water-based architectural coatings have also been widely used for color matching of water-based colorants. With the advancement of water-based coating technology, water-based wood coatings have begun to be applied, which puts forward new requirements for water-based colorants. Compared with architectural coatings, wood coatings not only have higher requirements on hardness, fineness, film-forming properties, adhesion, tinting strength, hidin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00
Inventor 何晓明蔡双儿叶斌
Owner DONGGUAN DAXING CHEM
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