CN108285710B

CN108285710B - Pigment composition and preparation method and application thereof

Info

Publication number: CN108285710B
Application number: CN201810132600.1A
Authority: CN
Inventors: 陈慧
Original assignee: Shanghai Marie Painting Materials Sales Co ltd
Current assignee: Shanghai Marley painting materials Co.,Ltd.
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2020-05-01
Anticipated expiration: 2038-02-09
Also published as: CN108285710A

Abstract

The invention provides a pigment composition, which comprises 10-30 parts of toner, 10-25 parts of extender pigment and 28-55 parts of polyacrylate emulsion by weight; the invention also provides a preparation method of the pigment composition; the pigment composition provided by the invention has the same color expression degree in a wet state and a dry state, does not have a color difference phenomenon, has an anti-yellowing effect when used outdoors, does not have the yellowing phenomenon completely even if placed at 50 ℃ for 1 month or exposed for 8 hours, and also has good fastness, water resistance, scratch resistance and weather resistance.

Description

Pigment composition and preparation method and application thereof

Technical Field

The invention belongs to the field of art painting pigments, and relates to a pigment composition, and a preparation method and application thereof.

Background

Acrylic art pigments, also known as acrylic paints, are pigment compositions comprising an aqueous polyacrylate, also commonly referred to as a "binder", as a binder, and a pigment toner dispersed in an aqueous system, and are mostly present as an aqueous emulsion. The water-based propylene painting pigment has the advantages of high drying speed, environmental protection, low smell, easy color mixing and the like, and is widely applied once coming out. The method is widely applied to the fields of buildings, woods, artworks, art creation teaching, decorative articles, clothes and the like.

The acrylic art pigment is a viscous aqueous pigment dispersion system which is formed by grinding and dispersing toner into water under the auxiliary action of a dispersing agent, and then mixing and thickening the water-based acrylic latex serving as a binding agent. Compared with the traditional oil painting pigment, the pigment has a plurality of unique advantages, such as: (1) can be diluted by water, which is beneficial to cleaning; (2) quick drying, the pigment can be dried within minutes after falling, the pigment does not need to be completely dried within weeks or months after finishing like oil pigment, and the drying time can be adjusted by using a retardant; (3) the dyed layer will lose solubility rapidly after drying, and form tough, elastic and water-impermeable film similar to rubber, so that the next procedure is easier to be carried out; (4) the color is full, dense and fresh, no dirty or gray feeling exists no matter how the color is blended, and the coloring layer does not absorb oil and stain; (5) the durability is long, and particularly for artistic works and artware, the phenomenon that an oil film in an oil painting is easy to oxidize after being used for a long time, and the oil film turns yellow and becomes hard to cause the picture to crack easily can not occur; (6) the acrylic pigment can be used as watercolor and gouache in the use mode, which is an effect which cannot be achieved by oil painting pigments; (7) the propylene pigment is prepared by dispersing toner in water, so that heat in the grinding process is easily dissipated, the grinding time is short, energy consumption is greatly saved, and water is used as a main carrier, so that the propylene pigment is nonflammable and safer to store, transport and use.

Although the many advantages of acrylic pigments have led to its wider and wider use, from professional painting applications to architectural painting, the colouring of sculptures and the use on fabrics. However, the propylene pigment has some defects which are not completely overcome at present, and compared with the oil painting pigment, the propylene pigment has the great defect that the color difference between a wet state and a dry state is larger, because the water dispersible latex is particles suspended in water and is milky liquid, and the color of the latex in the wet state can influence the integral color difference; after drying, the latex becomes a transparent, coherent film and no color difference occurs. This phenomenon causes a difference between the design and actual use of many colors, because the colors are wet when they are toned and tried, and it is difficult to predict the color expression in the dry state. Another drawback is that yellowing easily occurs during outdoor use, and even though acrylic pigments are far better than oily pigments in terms of resistance to yellowing, the change of yellowing color occurs in some transparent and light-colored colors over time. Limiting wider use, especially in some long term outdoor conditions.

CN104151903B discloses a high-gloss propylene pigment containing graphene, which comprises the following components in parts by weight: 20-35 parts of an acrylate emulsion; 5-20 parts of pigment toner; 10-25 parts of graphene slurry; 2-15 parts of an emulsifier; 8-8 parts of nekal BX 2; 5-30 parts of a filler; 0.5-5 parts of a pH regulator; 0.2-2 parts of a mildew preventive BCM; 0.5-1.2 parts of a wetting agent; 0.2-1.5 parts of a dispersing agent; 0.2-2.5 parts of SPA-202 defoaming agent; 5-10 parts of water, and the final service performance of the pigment is influenced and color difference can occur due to the use of the water-based acrylic emulsion in the preparation process. CN102796410A discloses a pigment composition and its application in textile fiber pigment, the pigment composition comprises the following components in parts by weight: 12-16 parts of universal color paste, 18-23 parts of waterborne elastic acrylic resin, 0.18-0.43 part of pH regulator, 0.02-0.06 part of defoamer and 2-6 parts of thickener, wherein the universal color paste also comprises the waterborne elastic acrylic resin to influence the dry-wet color difference. It can be seen that the binders used in the currently prepared acrylic pigments are all aqueous acrylic emulsions, and the difference between the wet and dry color difference cannot be avoided. Furthermore, if triethanolamine is used as a neutralizing agent, yellowing of the paint film outdoors is easily caused, and the water resistance is also affected. Although the use of water-soluble resins as binders can reduce the color difference between wet and dry, water-soluble resins tend to be poor in performance and fail to achieve good adhesion and water, scuff, wash and weather resistance.

Thus, there is a need to develop propylene pigments which are free from color differences in the dry and wet state, without loss of performance.

Disclosure of Invention

In view of the deficiencies of the prior art, the present invention aims to provide a pigment composition, a preparation method and a use thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the invention provides a pigment composition, which comprises 10-30 parts of toner, 10-25 parts of extender pigment and 28-55 parts of polyacrylate emulsion by weight.

The pigment composition provided by the invention combines polyacrylate emulsion with toner and extender pigment; the polyacrylate emulsion replaces waterborne acrylic emulsion such as acrylate emulsion, waterborne elastic acrylic resin and the like in the prior art, has the advantages of same wet and dry color expression degrees, no color difference and yellowing resistance when used outdoors, and a product dyed by the pigment composition has no yellowing phenomenon completely even if placed at 50 ℃ for 1 month or exposed for 8 hours, and also has good fastness, water resistance, scratch resistance and weather resistance.

In the present invention, the toner is contained in an amount of 10 to 30 parts by weight, and may be, for example, 10 parts, 12 parts, 15 parts, 20 parts, 24 parts, 25 parts, 28 parts or 30 parts.

The toner in the pigment composition plays a role in simply, conveniently and quickly adjusting the color of the pigment, namely, the color of the pigment composition can be changed by adding the toner, the proofing time is short, and the required color can be quickly finished.

Preferably, the toner is an inorganic toner and/or an organic toner.

Preferably, the inorganic toner comprises one or a combination of at least two of yellow iron oxide, red iron oxide, black iron oxide or titanium dioxide, wherein typical but non-limiting combinations are: yellow and red iron oxides; black iron oxide and titanium dioxide; yellow iron oxide, black iron oxide and titanium dioxide.

Preferably, the organic toner comprises one or a combination of at least two of phthalocyanine blue, toluidine purplish red, ultramarine, fast yellow G, hansa yellow 10G or phthalocyanine green G, wherein a typical but non-limiting combination is: phthalocyanine blue and toluidine purplish red; toluidine purplish red and ultramarine; ultramarine and fast yellow G; fast yellow G, hansha yellow 10G and phthalocyanine green G.

In the present invention, the selection of the toner is not limited to the above-mentioned kinds, and the toner used may be any combination of plural kinds of toners according to the actual needs of those skilled in the art, thereby obtaining a mixed color colorant; in addition, the matching amount of each toner in the combined toner can be adjusted within the above range of the amount of the toner according to actual needs, which mainly depends on the chromaticity and the tinting strength of the toner.

In the present invention, the content of the extender pigment is 10 to 25 parts by weight, and may be, for example, 10 parts, 12 parts, 15 parts, 17 parts, 20 parts, 24 parts or 25 parts.

The extender pigment in the pigment composition plays a role in filling the whole pigment composition and increasing the solid content, namely, the pigment composition can reduce the cost, improve the solid content and enhance the wear resistance by adding the extender pigment.

Preferably, the extender pigment comprises one or a combination of at least two of barium sulfate, silica, calcium carbonate, mica powder or kaolin, wherein a typical but non-limiting combination is: barium sulfate and silica; silica and calcium carbonate; mica powder and kaolin; calcium carbonate and/or silica are preferred.

In the present invention, it is preferable to use a combination of calcium carbonate and silica as an extender pigment, which enables the pigment composition to have better pigment-wrapping and color-developing effects by employing the combination.

In the present invention, the weight content of the polyacrylate emulsion is 28 to 55 parts, and may be, for example, 28 parts, 30 parts, 35 parts, 40 parts, 42 parts, 45 parts, 48 parts, 50 parts, 52 parts or 55 parts.

According to the invention, by adopting the polyacrylate emulsion, compared with the acrylate emulsion, the waterborne elastic acrylic resin and other waterborne acrylic emulsions adopted in the prior art, the pigment composition can have the effects of no dry-wet color difference and yellowing resistance.

Preferably, the polyacrylate emulsion is a transparent polyacrylate dispersion.

In the invention, the transparent polyacrylate dispersion is adopted, which can be changed into a transparent state from milky white in the process of preparing the pigment, has the function of forming a compact protective film at 0-25 ℃, has the performances of water insolubility, water washing resistance and scrubbing resistance after being dried and formed into a film, avoids the use of volatile organic solvents such as film forming aids, and is green and environment-friendly.

Preferably, the solids content of the transparent polyacrylate dispersion is 40% to 50%, for example 40%, 42%, 43%, 45%, 46%, 47%, 48% or 50%.

In the present invention, the solids content of the transparent polyacrylate dispersion is preferably controlled to 40% to 50%, by which it is possible to make the pigment composition exhibit more excellent dry-wet color difference free and yellowing resistance, and the color yellowing grade of the paint film under outdoor exposure is less than 1 (according to ISO Standard 4628-1-2003).

In the invention, compared with the same emulsion, the pigment has the defects of whitening and nonuniform dry and wet colors in a solvent type pigment system, the dry and wet colors are close to those of the same emulsion obtained by water solubility, but the water resistance and yellowing resistance can not be used, and the water is easy to fall off and bleed; the polyacrylate dispersion liquid which is transparent when the pH value is higher than 7.0 can achieve uniform dry and wet colors, has relatively excellent water resistance, does not have the phenomena of falling and bleeding, does not have a milky white state, does not have color covering after being mixed with pigment slurry, and has the same color after film forming and drying under a wet state.

Preferably, the transparent polyacrylate dispersion has a particle size of 80nm to 150nm, which may be, for example, 80nm, 90nm, 100nm, 110nm, 115nm, 120nm, 130nm, 140nm or 150 nm.

In the present invention, the pigment composition further comprises a dispersant in an amount of 0.5 to 5 parts by weight, for example, 0.5 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts or 5 parts.

Preferably, the dispersant is a polyacrylate.

Preferably, the polyacrylate salt comprises one or a combination of at least two of sodium polyacrylate, potassium polyacrylate, ammonium polyacrylate or a hydrophobically modified polyacrylate salt, preferably a hydrophobically modified polyacrylate salt.

Wherein, the hydrophobically modified polyacrylate is salt obtained by performing hydrophobic copolymerization modification on alkyl acrylate and styrene.

In the present invention, the pigment composition can achieve better water resistance by using the hydrophobically modified polyacrylate salt.

In the present invention, the pigment composition further comprises an antifoaming agent in an amount of 0.2 to 1 part by weight, and for example, may be 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.8 part, 0.9 part or 1 part.

Preferably, the defoamer comprises one or a combination of at least two of a mineral oil defoamer, a silicone defoamer or a polyether defoamer.

In the present invention, the pigment composition further comprises a pH adjusting agent in an amount of 0.3 to 1.5 parts by weight, for example, 0.3 part, 0.5 part, 0.6 part, 0.8 part, 1 part, 1.2 parts, 1.4 parts or 1.5 parts.

Preferably, the pH adjusting agent comprises one or a combination of at least two of sodium hydroxide, potassium carbonate, or AMP-95, preferably AMP-95.

In the present invention, AMP-95 is preferably used as the pH adjuster, and the pigment is more resistant to water, while if an organic neutralizing agent such as triethanolamine, diethanolamine, dimethylethanolamine, monoethanolamine or the like is used, the pigment is yellowed outdoors.

In the present invention, the pigment composition further comprises a thickener, a bactericide and water.

Preferably, the weight content of the thickener is 0.4-2 parts. For example, it may be 0.4 parts, 0.6 parts, 0.7 parts, 0.8 parts, 1 part, 1.3 parts, 1.5 parts, 1.7 parts or 2 parts.

Preferably, the thickener is a polyacrylic acid thickener and/or a polyurethane thickener.

In the present invention, the content of the bactericide is 0.1 to 0.5 parts by weight, and may be, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part or 0.5 part.

Preferably, the bactericide is Methylisothiazolinone (MIT) and/or 1, 2-benzisothiazolin-3-one (BIT).

In the present invention, biocides such as cason, N-Octyl Isothiazolinone (OIT) or zinc pyrithione, which can cause yellowing of the pigment, are selected to be avoided.

In the present invention, the water is contained in an amount of 15 to 30 parts by weight, and may be, for example, 15 parts, 18 parts, 20 parts, 22 parts, 24 parts, 25 parts, 28 parts or 30 parts.

Preferably, the pigment composition comprises the following components in parts by weight:

in a second aspect, the present invention also provides a process for preparing a pigment composition as described in the first aspect, the process comprising: and mixing the toner, the extender pigment and the polyacrylate emulsion, and optionally a dispersing agent, an antifoaming agent, a pH regulator, a thickening agent, a bactericide and water to obtain the pigment composition.

Preferably, the preparation method specifically comprises the following steps:

(1) adding a dispersing agent, a defoaming agent and a pH regulator into water to be dissolved to obtain a mixture;

(2) adding toner and extender pigment into the mixture obtained in the step (1), stirring and grinding the mixture, and then adding polyacrylate emulsion to obtain dispersion liquid;

(3) adding a bactericide and a thickener to the dispersion liquid obtained in the step (2) to obtain the pigment composition.

Preferably, the rotation speed of the stirring in step (2) is 1500rpm/min-2000rpm/min, and may be 1500rpm/min, 1550rpm/min, 1600rpm/min, 1700rpm/min, 1800rpm/min, 1900rpm/min or 2000rpm/min, for example.

Preferably, the stirring time in step (2) is 20min to 50min, and may be, for example, 20min, 25min, 30min, 35min, 40min, 45min or 50 min.

Preferably, the grinding in step (2) is carried out by adding zirconium beads and grinding under stirring until the fineness of the mixture scraper reaches 5 μm-35 μm, which may be 5 μm, 8 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm or 35 μm.

Preferably, the polyacrylate emulsion in step (2) is added at a stirring speed of 400rpm/min to 800rpm/min, which may be, for example, 400rpm/min, 450rpm/min, 500rpm/min, 600rpm/min, 650rpm/min, 700rpm/min, 750rpm/min or 800 rpm/min.

In the step (3), the bactericide and the thickener are added to adjust the viscosity of the pigment to be within the range of 8000-10000cPs, so as to obtain the pigment composition of the invention.

Further preferably, the preparation method of the pigment comprises the following steps:

(2) adding toner and extender pigment into the mixture obtained in the step (1), stirring at the rotating speed of 1500rpm/min-2000rpm/min for 20min-50min, adding zirconium beads, grinding under a stirring state until the fineness of a mixture scraper reaches 5 mu m-35 mu m, then adding polyacrylate emulsion, and stirring at the rotating speed of 400rpm/min-800rpm/min to obtain dispersion liquid;

The preparation method provided by the invention can keep the color consistent all the time in the whole preparation process, and does not generate any color difference.

In a third aspect, the present invention also provides the use of a pigment composition according to the first aspect in a building material, ceramic or textile pigment.

The pigment composition provided by the invention can be used for color decoration and drawing of ceramics, linen, wood boards, cement substrates, paper and textiles.

The pigment composition provided by the invention has the same color expression degree in a wet state and a dry state, has no color difference, has an anti-yellowing effect when being used outdoors, and also has the characteristics of good adhesive force and washing resistance.

The pigment composition provided by the present invention is preferably used for the color decoration and painting of paper or textiles, most preferably for the color decoration and painting of textiles. When the pigment composition is applied to color decoration and painting of textiles, the pigment composition can show more excellent adhesion, the pigments are not completely penetrated into water after the textiles are baked for 1 hour at a high temperature of 50 ℃, and the textiles still keep soft and washable.

Compared with the prior art, the invention has the following beneficial effects:

the pigment composition provided by the invention has the same color expression degree in wet state and dry state, does not have the phenomenon of color difference, has the anti-yellowing effect when being used outdoors, and has no yellowing phenomenon even if being placed at 50 ℃ for 1 month or being exposed for 8 hours; meanwhile, the paint has good fastness, water resistance, scratch resistance and weather resistance, and when the paint is applied to the pigment of the textile, the adhesive force is good, the textile is baked for 1 hour at the high temperature of 50 ℃ and then soaked in water, the pigment is not permeated into the water completely, the textile still keeps soft and washable, and the paint has high application value.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.

Example 1

The pigment composition prepared by the implementation comprises the following components in parts by weight:

the preparation method comprises the following steps:

adding 17.3 parts of water, 1.5 parts of sodium polyacrylate dispersant, 0.3 part of organic silicon defoamer and 1.2 parts of AMP-95pH regulator into a high-speed stirring dispersion kettle in sequence, starting stirring for 300 r/min, then adding 25 parts of titanium dioxide and 12 parts of 1250-mesh calcium carbonate, and then increasing the stirring speed to 1500rpm/min for dispersing for 30 minutes; then, 40 parts by weight of zirconium beads were added and ground at a rate of 2000rpm/min for 1 hour. The fineness was measured to 33 μm using a blade fineness gauge, and the dispersion was stopped, and 100-mesh filtration was carried out to obtain a white slurry.

Adding the prepared slurry into a stirring kettle provided with a vacuum stirrer, slowly adding 49.7 parts of transparent polyacrylate emulsion (with the solid content of 45%) while stirring (at the speed of 600rpm/min), then adding 0.2 part of bactericide MIT, and then adding 0.8 part of alkali-swollen polyacrylic acid thickener to adjust the viscosity to 8000-10000 cps. And starting vacuum defoaming to obtain the white pigment composition without chromatic aberration and yellowing resistance.

Example 2

the preparation method comprises the following steps:

sequentially adding 21.5 parts of water, 1.2 parts of sodium polyacrylate dispersant, 0.3 part of mineral oil defoamer and 0.5 part of AMP-95pH regulator into a high-speed stirring dispersion kettle, stirring for 300 r/min, then adding 18 parts of titanium dioxide, 8 parts of iron oxide black and 12 parts of 1200-mesh barium sulfate, and then increasing the stirring speed to 2000rpm/min for dispersion for 20 minutes; then, 40 parts of zirconium beads were added and ground at a rate of 2000rpm/min for 1 hour. The fineness was measured to 22 μm using a blade fineness gauge, and the dispersion was stopped and filtered through a 100-mesh filter to obtain a white slurry.

Adding the prepared slurry into a stirring kettle provided with a vacuum stirrer, slowly adding 38 parts of transparent polyacrylate emulsion (with the solid content of 40%) while stirring (at the speed of 700rpm/min), then adding 0.3 part of bactericide MIT, and adding 1 part of alkali-swollen polyacrylic acid thickener to adjust the viscosity to 8000-10000 cps. And starting vacuum defoaming to obtain the white pigment composition without chromatic aberration and yellowing resistance.

Example 3

the preparation method comprises the following steps:

sequentially adding 24.2 parts of water, 2.5 parts of hydrophobic modified sodium polyacrylate dispersant, 0.5 part of mineral oil defoamer and 1 part of AMP-95pH regulator into a high-speed stirring dispersion kettle, stirring for 300 r/min, then adding 8 parts of titanium dioxide, 8 parts of fast yellow G and 12 parts of 1200-mesh barium sulfate, and then increasing the stirring speed to 1600rpm for dispersion for 30 minutes; then, 40 parts of zirconium beads were added and ground at a rate of 2000rpm/min for 1 hour. The fineness was measured to 30 μm using a blade fineness gauge, and the dispersion was stopped, and 100-mesh filtration was carried out to obtain a white slurry.

Adding the prepared slurry into a stirring kettle provided with a vacuum stirrer, slowly adding 35 parts of transparent polyacrylate emulsion (with the solid content of 50%) while stirring (at the speed of 600rpm/min), then adding 0.3 part of bactericide MIT, and adding 1 part of alkali-swollen polyacrylic acid thickener to adjust the viscosity to 8000-10000 cps. And starting vacuum defoaming to obtain the white pigment composition without chromatic aberration and yellowing resistance.

Example 4

the preparation method comprises the following steps:

Adding the prepared slurry into a stirring kettle provided with a vacuum stirrer, slowly adding 35 parts of transparent polyacrylate emulsion (with the solid content of 50%) while stirring (at the speed of 500rpm/min), then adding 0.3 part of bactericide MIT, and adding 1 part of alkali-swollen polyacrylic acid thickener to adjust the viscosity to 8000-10000 cps. And starting vacuum defoaming to obtain the white pigment composition without chromatic aberration and yellowing resistance.

Example 5

the preparation method comprises the following steps:

sequentially adding 15 parts of water, 0.5 part of hydrophobically modified sodium polyacrylate dispersant, 0.2 part of mineral oil defoamer and 0.3 part of potassium carbonate pH regulator into a high-speed stirring dispersion kettle, starting stirring for 300 r/min, then adding 10 parts of phthalocyanine green G and 25 parts of 1200-mesh silicon dioxide, and then increasing the stirring speed to 1600 r/min for dispersion for 20 minutes; then, 40 parts of zirconium beads were added and ground at a rate of 2000rpm/min for 1 hour. The fineness was measured to 35 μm using a blade fineness gauge, and the dispersion was stopped and filtered through a 100-mesh filter to obtain a white slurry.

Adding the prepared slurry into a stirring kettle provided with a vacuum stirrer, slowly adding 55 parts of transparent polyacrylate emulsion (with the solid content of 50%) while stirring (at the speed of 800rpm/min), then adding 0.1 part of bactericide BIT, and then adding 0.4 part of alkali-swollen polyurethane thickener to adjust the viscosity to 8000-10000 cps. And starting vacuum defoaming to obtain the white pigment composition without chromatic aberration and yellowing resistance.

Example 6

the preparation method comprises the following steps:

sequentially adding 30 parts of water, 0.5 part of hydrophobic modified potassium polyacrylate dispersant, 1 part of organic silicon defoamer and 1.5 parts of AMP-95pH regulator into a high-speed stirring dispersion kettle, stirring for 300 r/min, then adding 30 parts of ultramarine blue and 10 parts of 1200-mesh mica powder, and then raising the stirring speed to 1600rpm/min for dispersing for 50 minutes; then, 40 parts of zirconium beads were added and ground at a rate of 2000rpm/min for 1 hour. The fineness was measured to be 5 μm using a blade fineness meter, and the dispersion was stopped and filtered with 100 mesh to obtain a white slurry.

Adding the prepared slurry into a stirring kettle provided with a vacuum stirrer, slowly adding 28 parts of transparent polyacrylate emulsion (with the solid content of 50%) while stirring (at the speed of 400rpm/min), then adding 0.5 part of bactericide BIT, adding 2 parts of alkali-swollen polyurethane thickener, and adjusting the viscosity to 8000-10000 cps. And starting vacuum defoaming to obtain the white pigment composition without chromatic aberration and yellowing resistance.

Comparative example 1

The comparative example differs from example 1 in that a pigment composition was prepared by replacing the transparent polyacrylate emulsion with a conventional polyacrylate emulsion, Rohm and Haas AC-261P, in 48.7 parts by weight, and the remaining components, parts by weight, and preparation method were completely the same.

Comparative example 2

The comparative example differs from example 1 in that the transparent polyacrylate emulsion was replaced with the elastic polyacrylic emulsion Rohm and Haas E-2468 in 48.7 parts by weight, the kaempferol was used as a bactericide in 0.2 part by weight, and the remaining components, parts by weight and preparation method were completely the same to prepare a pigment composition.

Comparative example 3

This comparative example differs from example 1 in that 48.7 parts by weight of the water-soluble polyacrylic resin basf Joncryl 678 was substituted for the transparent polyacrylate emulsion, 1.2 parts by weight of triethanolamine was substituted for AMP-95, 0.2 parts by weight of carson as a bactericide, and the remaining components, parts by weight, and the preparation method were completely the same to prepare a pigment composition.

Comparative example 4

The comparative example is different from example 1 in that 15 parts by weight of a transparent polyacrylate emulsion, and the rest of components, parts by weight, and preparation method are completely the same to prepare a pigment composition.

Comparative example 5

The comparative example differs from example 1 in that the transparent polyacrylate emulsion has a solids content of 30% and is prepared in the same manner as example 1, except that the remaining components, parts by weight and preparation process are identical.

Comparative example 6

The comparative example differs from example 1 in that the transparent polyacrylate emulsion has a solids content of 60% and is prepared in the same manner as example 1, except that the components and parts by weight and the preparation process are identical.

The pigment compositions prepared in examples 1 to 6 and comparative examples 1 to 6 were subjected to a color difference comparison test, a water resistance test, an adhesion test (tile adhesion, fabric adhesion), a water resistance test, a hot storage yellowing test, and a weather resistance test, according to the following methods:

(1) and (3) color difference comparison test:

wet color difference: and comparing the colors of the ground slurry and the prepared pigment composition, and observing whether color difference exists or not and whether a whitening phenomenon exists or not.

Dry color difference: the prepared pigment composition is knife-coated on a black-white polyester sheet, and the color of the dried pigment composition is compared with the color difference of the ground slurry after drying.

Dry-wet color difference: the prepared pigment composition was knife-coated onto a polyester sheet alternating between black and white, and the color of the dried pigment composition was compared to the color of the prepared pigment composition in the wet state.

(2) Water resistance: the prepared pigment composition was spread on a glass plate by a 150 μm wire bar, dried for 24 hours, and then immersed in tap water for 6 hours, and then examined for the occurrence of whitening, swelling, peeling, etc., and scored. The score was 1-5, with 5 being the best and 1 being the worst. Description of the different scores:

and 5, dividing: it has no blushing, swelling, and falling

And 4, dividing: slight whitish, do not swell and do not fall off

And 3, dividing: severe blushing, partial swelling, no detachment

And 2, dividing: severe blushing, partial swelling and partial exfoliation

1 minute: severe blushing, complete swelling and complete exfoliation

(3) Ceramic chip adhesion: the prepared pigment composition was uniformly brushed on the tile with a brush, then baked in an oven at 50 ℃ for 1 hour, removed and cooled to room temperature. Soaking in water, and observing whether the color turns white and drops.

(4) The invention emphasizes the test of the adhesive force of the fabric: the prepared pigment composition is uniformly brushed on the textile fiber cloth by a brush, then the textile fiber cloth is baked in an oven at 50 ℃ for 1 hour, taken out and cooled to room temperature. Soaking in water, and observing whether color permeates into water.

(5) Water washing resistance: the prepared pigment composition is uniformly brushed on the textile fiber cloth by a brush, then the textile fiber cloth is baked in an oven at 50 ℃ for 1 hour, taken out and cooled to room temperature. Rubbing with hands for 100 times, and observing whether there is thick line bleeding or whitish phenomenon. The score is 1-3, 1 is serious bleeding, 2 is white bleeding, and 3 is white non-bleeding.

(6) Thermal storage yellowing: to avoid the influence of highly hiding color, the white and light gray of examples 1,2 and comparative examples 2, 3 were selected for heat-storage comparison under conditions of 1 month at 50 ℃.

(7) Weather resistance and yellowing: to avoid the influence of high-hiding color, white and light gray of examples 1,2 and comparative examples 2, 3 were selected for comparison, provided that a 5 μm film was prepared on black and white polyester sheets and left to be exposed for 1 month in the open air where sunlight was visible for more than 8 hours per day.

The specific results of the above tests are shown in table 1:

TABLE 1

From the above results, it can be seen that when the transparent polyacrylate emulsion is replaced with the common polyacrylic emulsion or the water-soluble polyacrylic emulsion, the color difference, the adhesion and the water resistance of the pigment composition are affected, and when the content of the transparent polyacrylate emulsion is out of the range defined in the present invention, the adhesion of the pigment composition is also decreased; when triethanolamine is used as the pH adjuster and cason is used as the bactericide, the pigment composition is yellowed and the water resistance is reduced.

When the pigment composition provided by the invention is applied to textiles, the textiles are baked at a high temperature of 50 ℃ for 1 hour and then soaked in water, the pigment is not completely permeated into the water, the textiles still keep soft and washable, and when the polyacrylate emulsion in the pigment composition is replaced by other substances or the content is not in the limited range of the invention, the good effect produced by the invention can not be achieved by using other existing pigments for testing.

The pigment composition prepared in the embodiment 1 of the invention is subjected to adhesion test on the surfaces of textiles, ceramic sheets, paper and wood boards, the prepared pigment composition is uniformly brushed on the surfaces of the textile fiber cloth, the ceramic sheets, the paper and the wood boards by a brush, then the surfaces are baked in a 50 ℃ oven for 1 hour, and then the pigment composition is taken out and cooled to room temperature. Soaking in water, testing whether color is permeated into water,

distinguishing according to the color bleeding grade:

level 0 is no color spread and no color change in water;

level 1 is that the edge of the painting pigment is expanded, and the color in water is not changed;

grade 2 is that the falling part of the coating pigment is less than 10 percent, and the pigment enters water with color and changes color;

grade 3 is that the paint part falls off by 10 to 50 percent, and the color in water changes;

and 4, the paint part completely falls off, and the dyeing is darker in water.

The specific test results obtained are shown in table 2:

TABLE 2

	Textile fabric	Ceramic wafer	Paper sheet	Wood board
					Adhesion (grade)	0	0	1	1

Therefore, the conclusion that the pigment composition provided by the invention has better effect when applied to textiles and ceramic chips than other materials can be drawn through the test results in the table.

The applicant states that the present invention is illustrated by the above examples of the pigment composition of the present invention and the preparation method and application thereof, but the present invention is not limited to the above detailed methods, i.e. it does not mean that the present invention must be implemented by relying on the above detailed methods. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. A pigment composition, characterized in that the pigment composition comprises, in parts by weight: 10-30 parts of toner, 10-25 parts of extender pigment, 28-55 parts of polyacrylate emulsion and 0.5-5 parts of dispersant;

the polyacrylate emulsion is transparent polyacrylate dispersion liquid, and the solid content of the transparent polyacrylate dispersion liquid is 40% -50%;

the dispersant is polyacrylate.

2. The pigment composition according to claim 1, wherein the toner is an inorganic toner and/or an organic toner.

3. The pigment composition according to claim 2, wherein the inorganic toner comprises any one of yellow iron oxide, red iron oxide, black iron oxide or titanium dioxide or a combination of at least two thereof.

4. The pigment composition according to claim 2, wherein the organic toner comprises any one of or a combination of at least two of phthalocyanine blue, toluidine purplish red, ultramarine, fast yellow G, hansa yellow 10G, or phthalocyanine green G.

5. The pigment composition according to claim 1, wherein the extender pigment comprises any one or a combination of at least two of barium sulfate, silica, calcium carbonate, mica powder or kaolin.

6. Pigment composition according to claim 5, characterized in that the extender pigment is calcium carbonate and/or silica.

7. The pigment composition according to claim 1, wherein the transparent polyacrylate dispersion has a particle size of 80nm to 150 nm.

8. The pigment composition according to claim 1, wherein the polyacrylate salt comprises any one of sodium polyacrylate, potassium polyacrylate, ammonium polyacrylate or hydrophobically modified polyacrylate salt or a combination of at least two thereof.

9. The pigment composition according to claim 8, wherein the polyacrylate salt is a hydrophobically modified polyacrylate salt.

10. The pigment composition according to claim 1, further comprising an antifoaming agent.

11. The pigment composition according to claim 10, wherein the defoaming agent is contained in an amount of 0.2 to 1 part by weight.

12. The pigment composition according to claim 10, wherein the defoamer comprises any one of a mineral oil defoamer, a silicone defoamer or a polyether defoamer or a combination of at least two thereof.

13. The pigment composition according to claim 1, further comprising a pH adjusting agent.

14. The pigment composition according to claim 13, wherein the pH adjusting agent is contained in an amount of 0.3 to 1.5 parts by weight.

15. The pigment composition according to claim 13, wherein the pH adjusting agent comprises any one of sodium hydroxide, potassium carbonate or AMP-95 or a combination of at least two thereof.

16. The pigment composition according to claim 15, wherein the pH adjusting agent is AMP-95.

17. The pigment composition according to claim 1, further comprising a thickener.

18. The pigment composition according to claim 17, wherein the thickener is present in an amount of 0.4 to 2 parts by weight.

19. Pigment composition according to claim 17, wherein the thickener is a polyacrylic thickener and/or a polyurethane thickener.

20. The pigment composition according to claim 1, further comprising a biocide.

21. The pigment composition according to claim 20, wherein the amount of the bactericide is 0.1 to 0.5 part by weight.

22. Pigment composition according to claim 20, characterized in that the fungicide is methylisothiazolinone and/or 1, 2-benzisothiazolin-3-one.

23. The pigment composition according to claim 1, further comprising water.

24. The pigment composition according to claim 23, wherein the pigment composition comprises 15 to 30 parts by weight of water.

25. A pigment composition according to any one of claims 1 to 24, characterized in that the pigment composition comprises, in parts by weight:

26. a process for the preparation of a pigment composition according to any one of claims 1 to 25, characterized in that the process comprises: the pigment composition is obtained by mixing a toner, an extender pigment and a polyacrylate emulsion, and optionally a dispersant, a defoaming agent, a pH regulator, a thickener, a bactericide and water.

27. The method according to claim 26, characterized in that it comprises the steps of:

28. The method of claim 27, wherein the stirring in step (2) is performed at a speed of 1500rpm/min to 2000 rpm/min.

29. The method of claim 27, wherein the stirring time in step (2) is 20min to 50 min.

30. The method as claimed in claim 27, wherein the grinding in step (2) is carried out by adding zirconium beads and grinding under stirring until the fineness of the mixture scraper reaches 5 μm to 35 μm.

31. The method according to claim 27, wherein the polyacrylate emulsion in step (2) is added with stirring at a speed of 400rpm/min to 800 rpm/min.

32. Use of the pigment composition according to any of claims 1 to 25 in building material, ceramic or textile pigments.