WO2007076663A1

WO2007076663A1 - Pigment composition, the material color chip thereof and the method for making the same

Info

Publication number: WO2007076663A1
Application number: PCT/CN2006/002230
Authority: WO
Inventors: Weiping He; Yunlan Zhao
Original assignee: Shenzhen Ocean Power Industrial Co., Ltd.
Priority date: 2005-12-31
Filing date: 2006-08-30
Publication date: 2007-07-12
Also published as: CN1995232A

Abstract

A pigment composition, the material color chip thereof and the method for making the same, are disclosed in the present invention. The pigment composition comprises 995-1005 parts in weight of film-forming binder; 2.85-3.05 parts in weight of PY42 whose pigment content is 60%; 0.34-0.36 parts in weight of PR101 whose pigment content is 65%; and 0.04 parts in weight of PBK7 whose pigment content is 9%. The major components of the film-forming binder are acrylic copolymer and TiO2, wherein the amount of acrylic copolymer is 30-40% and the amount of TiO2 is 8-12%. The TiO2 which is used as white pigment is ISO 591 R2 type, and the purity≥95%, the oil absorption < 20 g/100 g, the lightening power Reynold’s number is 1800. The contrast ratio of the film-forming binder is 0.78-0.82, and the Stormer viscosity is 90-100KU. When the angle of incidence is 85°, the glossiness is 5-10°. Both of the weathering resistance and stability of the present composition are high and the fidelity of the formulation is good. The material and the process used fulfill the requirements and the standards of environment-protection on low VOC and non-VOC. Comparing to the standard value of theoretical model in China Color System, the chromatic aberration of the obtained material color chip is very little, and the accuracy degree for color-realizing is perfect. Besides, the process is proficient and the practical value is very high.

Description

Pigment composition, solid color block of pigment composition and preparation method thereof

Technical field

The present invention relates to a composition, in particular to a pigment composition having a standard lightness (L*) value of 87.13, a standard red/green (A*) value of 4.02, and a standard yellow/blue (B*) value of 12.51. A solid color block prepared by the pigment composition and a preparation method thereof. Background technique

The three attributes of color include hue, lightness, and chroma, and as long as hue, lightness, and chroma are determined, a unique color can be determined. The Chinese color system GB/T 15608-1995 stipulates that in the theoretical model of the Chinese color system, any color can be calibrated with the hue, brightness and chroma of the color stereo, and given a certain number. The calibration method is to write the hue H first, then write the brightness V, and write the chroma C after the slash, expressed as H V/C. Taking color 10BG 5.5/6 as an example, 10BG means hue, 5.5 means lightness, and 6 means chroma.

From the theoretical value of the color in the theoretical model to the production process of the physical color block, it will involve the control of many important aspects such as color difference (ΔΕ), raw materials, formulation and process. Among them, color difference control is a hard indicator to measure the ability of a country's color reproduction technology. The smaller the color difference, the higher the closeness of the color theoretical value to the color sample, the greater the technical difficulty, and the stronger the scientific research strength of the country. The higher the process level. Therefore, the research and development technology and research and development results of physical color blocks in the theoretical model of China's color system reflect China's technological innovation capability in the field of color, and it is extremely important for promoting the development of color science and technology in the whole country and improving the status of the country in the world color field. Far-reaching significance.

Apply pigments according to regulations to obtain physical color blocks. Physical color blocks are widely used in all aspects of national life, radiating and affecting every color-related field, for example, non-ferrous manufacturing, electronic imaging, color recording, multimedia storage and transmission, and liquid crystal display. Etc., covering practical samples of Chinese national standards under the color representation method, related industries include: modern construction and decorative materials, clothing, textile materials, news media and printing industry, multimedia display color and other industries.

At present, from the theoretical value in the theoretical model to the technical aspect of the real color block, it is still in the stage of inaccurate control, and this is the core of the application value of color theory. Summary of the invention

The object of the present invention is to provide a pigment composition, a solid color block of a pigment composition and a preparation method thereof, which have high weather resistance and stability, good specific gravity, and light resistance of the prepared solid color block coating. Good denaturation and reproducibility, moderate gloss and environmental friendliness.

In order to achieve the above object, the present invention provides a pigment composition which is numbered 10Y 8.5/2 in the Chinese color system, has a standard brightness value of 87.13, a standard red/green value of 4.02, and a standard yellow/blue color. The value is 12.51, and the color composition is composed by weight:

Film-forming binder 995~1005 parts;

PY42, the pigment content is 60%, 2.85~3.05 parts;

PR101, the pigment content is 65%, 0.34~0.36 parts;

PBK7, pigment content 9%, 0.04 parts.

The main component of the film-forming binder is an acrylic copolymer and Ti0 ₂ , wherein the content of the acrylic copolymer is 30 to 40%, and the average molecular weight of the acrylic copolymer ranges from 15 to 200,000, and the average particle diameter is 0.1 to 0.2. Ηηι, the minimum film forming temperature is 10 to 22 ° C, the glass transition temperature is 25 to 35 ° C, the acrylic copolymer is anionic, the pH is 8.5 to 10.0; the TiO 2 is the main white pigment, and its content is 8 ~: 12%, the Ti0 ₂ is ISO 591 R2 type, purity ≥95%, oil absorption <20g/100g, colorless Reynolds number 1800. The film-forming base has a contrast ratio of 0.78 to 0.82, a Stormer viscosity of 90 to 100 KU, and a gloss of 5 to 10 at an incident angle of 85°. The invention also provides a physical color block of a pigment composition, which has a label of 10YR 8.5/2 in the Chinese color system, a standard brightness value of 87.13, a standard red/green value of 4.02, and a standard yellow/blue value of 12.51. The physical color block is prepared according to the raw materials and the ratio of the above pigment composition, and the composition thereof is in parts by weight:

Film forming base 995~1005 parts;

PY42, the pigment content is 60%, 2.85~3.05 parts;

PR101, the pigment content is 65%, 0.34~0.36 parts;

PBK7, pigment content of 9%, 0.04 parts;

The main component of the film-forming binder is an acrylic copolymer and Ti0 ₂ , wherein the content of the acrylic copolymer is 30 to 40%, and the average molecular weight of the acrylic copolymer ranges from 15 to 200,000, and the average particle diameter is 0.1~ 0.2μηι, the minimum film forming temperature is 10~22°C, and the glass transition temperature is 25~35°C. The acrylic copolymer is anionic, the pH is 8.5~10.0 _; the Ti0 _{2 is the} main white pigment, the content is 8~12%, the Ti〇 ₂ is IS0 591 R2, the purity is 95%, the oil absorption is <20g/ 100 g, achromatic Reynolds number 1800; the film-forming base has a contrast ratio of 0.78 to 0.82, a Stormer viscosity of 90 to 100 KU, and an incident angle of 85°, and a gloss of 5 to 10°.

When the incident angle is 85°, the gloss of the physical color block is 4°~6°, and the color difference ΔΕ≤0.5 from the standard value is much lower than the national standard of GB/T 15608-1995 China Color System. There is a requirement for the color difference latitude ΔΕ ≤ 3 of the color sample.

The present invention also provides a method of preparing a solid color patch of the above pigment composition, the method comprising the steps of:

1. Mixing raw materials: Weigh the raw materials according to the ratio of the above pigment compositions, and mix them evenly;

2. Coating: Apply the coating evenly and evenly on the coated paper under the environmental conditions of relative humidity 50% ± 5%, room temperature 23 ± 2 ° C, coating wet film thickness Is 250μιη _;

3. Drying: The coated paper coated with the composition is dried in a precision oven at 50 ± 2 ° C for 3 to 4 hours to constant weight, taken out, and cooled to room temperature to obtain a solid color block.

The invention has the beneficial effects that the pigment composition of the invention has high weather resistance and stability, good specific gravity, and the raw materials and processes used meet the requirements and standards of low VOC and zero VOC environmental protection; physical color blocks and "Chinese color system" The standard value in the theoretical model is very small compared to the color difference, the accuracy of the color realization is very high, the physical color block coating has good light resistance and reproducibility, the gloss is moderate, the environment is environmentally friendly, and the preparation process is refined, which is extremely strong. Practical value. detailed description

Preferred pigments of the invention include the international pigment index codes PR101 (pigment content 65%), PY42 (pigment content 60%), and PBK7 (pigment content 9%). Among them, PR101 (pigment content is 65%) iron red, is one of the most commonly used inorganic pigments. Commonly used iron red has the difference of yellow phase and blue phase, has strong tinting strength, and has a blue phase in dark red. Often combined with organic color paste to improve the weather resistance of bright colors, it has a strong hiding power; PY42 (60% pigment content) iron yellow, is one of the most commonly used inorganic pigments, high light yellow Vividness, a certain dark phase when deepening yellow, often combined with organic color paste to improve the weather resistance of bright colors, and has a strong hiding power; PBK7 (pigment content is 9%) is a high pigment carbon black with a particle size range of 10~15nm. It is used to adjust the dilution and reduce the saturation and brightness of the color. It plays a decolorizing effect and does not cause hue generation. Large deviations are a safer and more effective pigment for fine-tuning of colors.

The contrast ratio is 0.78~0.82, the Stormer viscosity is 90~100KU, and the glossiness (85°) 5~

The film forming base of 10° is used as the basic carrier for realizing the color. The main component of the film forming base is acrylic copolymer and Ή0 ₂ , wherein the content of the acrylic copolymer is 30~40%, and the average molecular weight of the acrylic copolymer The range is from 15 to 200,000, the average particle size is 0.1~0.2μηι, the minimum film forming temperature is 10~22 °C, the glass transition temperature is 25~35 °C, the acrylic copolymer is anionic, the pH is 8.5~ 10.0; The Ti0 _{2 is} a main white pigment, and its content is 8 to 12%. The Ti0 ₂ is IS0 591 R2 type, the purity is 95%, the oil absorption is <20 g/100 g, and the colorlessness Reynolds number is 1800. The film-forming base material can be used by CSC-B base provided by Shenzhen Haichuan Industrial Co., Ltd. with a contrast ratio of 0.78~0.82, a Stormer viscosity of 90~100KU, and a glossiness (85°) of 5~10°. material.

We will refer to the generated physical color block as CSC0985002. The label in Chinese color system is 10Y 8.5/2. The standard L* value, standard A* value and standard B* value are 87.13, 4.02, 12.51, respectively. The color difference ΔΕ ≤ 0.5 between the measured value of the block and the standard value. Example 1:

2.95 g of ΡΥ42, 0.35 g of PR101, 0.04 g of ΡΒΚ7, and a film-forming base of 1000 g were weighed by weight. The above raw materials are mixed and mixed, and then the mixed composition is uniformly coated on the coating under the conditions of relative humidity of 50%±5% and room temperature of 23±2° C. by mechanical coating. On the paper, the wet film thickness of the coating is 250 μm, and then the coated paper coated with the composition is placed in a precision oven at 50±2° C. for 3 to 4 hours to constant weight, taken out, and cooled to room temperature to obtain a physical color block. . Example 2:

2.85 g of PY42, 0.34 g of PR101, 0.04 g of ruthenium 7, and 1000 g of a film-forming base were weighed by weight. The procedure for preparing the physical color block is the same as in Example 1. Example 3: 3.05 g of PY42, 0.36 g of PR101, 0.04 g of PBK7, and a film-forming base of 1005 g were weighed by weight. The procedure for preparing the physical color block is the same as in Example 1.

Weigh 2.96 g of PY42, 0.35 g of PR101, 0.04 g of PBK7, and a film-forming base of 995 g. The procedure for preparing a solid color block is the same as in Example 1. A list of the results of the physical color block test prepared in Examples 1 to 4:

Table 1

Remarks: In the CIE1976 LAB uniform color space, L represents the brightness value; A represents the red/green value; B represents the yellow/blue value; ΔΕ represents the total color difference, used to determine the closeness of the sample to the standard, ΔΕ = [(L- L* ) ² + (Α- Α* ) ² + (Β- Β* ) ² ] ^{1 2} ; Glossiness refers to the degree of gloss on the surface of an object expressed by data. Detected by DATACOLOR 600 spectrophotometer, in the example of Table 1, the color difference ΔΕ ≤ 0.5 between the measured average value and the standard value is much lower than the color difference of the colored sample according to the national standard of GB/T 15608-1995 China Color System. The requirement of tolerance ΔΕ≤3 (GB/T 15608-1995).

During the process of the composition, there are no coating defects such as floating color, delamination and flocculation. During the process of production, the volatile organic compound (VOC) release amount is <200g/L, free formaldehyde ≤0.1 _§ /13⁄4, soluble lead ≤90mg /kg, soluble cadmium ≤75 ₁ ^/13⁄4, soluble chromium ≤60113⁄4/13⁄4, solubility ≤60mg/kg, LD50/ oral/rat: >7000mg/kg. The color of the physical color block is good in reproducibility.

Some of the other test performances are shown in the following table: Table 2

It can be clearly seen from the above Table 2 that the weather resistance test data of the composition obtained by the selected examples conforms to the values of the Chinese national standard, and the color change is less than 0.30 by the heat storage stability test, which ensures Achieve the accuracy and long-term stability of the physical color.

Claims

Spur request

A pigment composition having a standard brightness value of 87.13, a standard red/green value of 4.02, and a standard yellow/blue value of 12.51, characterized in that it is composed of parts by weight - a film-forming base material of 995 to 1005 parts;

PY42, the pigment content is 60%, 2.85~3.05 parts;

PR101 with a pigment content of 65°/. , 0.34~0.36 parts; PBK7, pigment content is 9%, 0.04 parts;

The main component of the film-forming binder is an acrylic copolymer and Ti0 ₂ , wherein the content of the acrylic copolymer is 30 to 40%, and the average molecular weight of the acrylic copolymer ranges from 15 to 200,000, and the average particle diameter is 0.1~ 0.24m, the minimum film forming temperature is 10~22°C, the glass transition temperature is 25~35°C, the acrylic copolymer is anionic, the pH is 8.5~10.0; the Ti0 _{2 is the} main white pigment, the content thereof It is 8~12%, the Ti0 ₂ is IS0 591 R2 type, the purity is 95%, the oil absorption is <20g/100g, the achromatic force Reynolds number is 1800; the contrast ratio of the film-forming base is 0.78~0.82, Stowe The viscous viscosity is 90 to 100 KU, and the gloss is 5 to 10 ° when the incident angle is 85°.

2. A solid color block of a pigment composition having a standard brightness value of 87.13, a standard red/green value of 4.02, and a standard yellow/blue value of 12.51, characterized in that it consists of parts by weight - film-forming binder 995 ~ 1005 copies;

PY42, pigment content is 60%, 2.85~3.05 parts; PR101, pigment content is 65%, 0.34~0.36 parts;

PBK7, pigment content of 9%, 0.04 parts;

The main component of the film-forming binder is an acrylic copolymer and Ti0 ₂ , wherein the content of the acrylic copolymer is 30 to 40%, and the average molecular weight of the acrylic copolymer ranges from 15 to 200,000, and the average particle diameter is 0.1~ 0.2μιη, the minimum film forming temperature is 10~22°C, the glass transition temperature is 25~35°C, the acrylic copolymer is anionic, the pH is 8.5~10.0; the Ti0 _{2 is the} main white pigment, the content thereof It is 8~12%, the Ti0 ₂ is IS0 591 R2 type, the purity is 95%, the oil absorption is <20g/100g, the achromatic force Reynolds number is 1800; the contrast ratio of the film-forming base is 0.78~0.82, Stowe The viscous viscosity is 90 to 100 KU, and the gloss is 5 to 10 ° when the incident angle is 85°.

3. A solid color patch of a pigment composition according to claim 2, wherein: when the incident angle is 85, the gloss is 4 to 6 and the color difference Δ Ε 0.5 from the standard value.

4. The method of preparing the physical color block of claim 2, comprising: the following steps:

(1) Mixing raw materials: Weigh the raw materials according to the ratio and mix well;

(2) Coating: Under ambient conditions, the relative humidity is 50% ± 5 ° /. , at room temperature 23 ± 2 ° C, using a mechanical coating method, the composition is evenly and evenly coated on the coated paper, the coating wet film thickness is 250 μιη _;

(3) Drying: The coated paper coated with the composition was dried in a precision oven at 50 ± 2 ° C for 3 to 4 hours to constant weight, taken out, and cooled to room temperature to obtain a solid color block.

The preparation method according to claim 4, characterized in that: when the incident angle is 85°, the gloss of the prepared solid color block is 4° to 6°, and the color difference Δ E^0.5 from the standard value.