CN1986674A - 7.5GY 7/2 pigment composition and color block made of the composition - Google Patents

Abstract

The present invention discloses a kind of 7.5GY 7/2 pigment composition and color block made of the composition. The pigment composition consists of: CSC-A base material in 995-1005 weight portions, PBK7 with pigment content 9 % in 0.84-0.86 weight portions, PG7 with pigment content 20 % in 4.06-4.46 weight portions and PY42 with pigment content 60 % in 24.35-26.35 weight portions. The CSC-A base material contains acrylic copolymer in 30-40 % as main component; ISO 591 R2 type pigment with TiO2 content not less than 95 %, oil absorption less than 20g/100g and reducing power of 1800 as main white pigment in the content of 18-22 %; contrast ratio of 0.90-0.96, viscosity of 90-100 KU, and gloss index of 5-10 deg at incident angle of 85 deg. The composition of the present invention has high weather resistance, high stability, high compounding reproductivity and environment friendship. The color block is accurate and practical.

Description

A kind of composition of 7.5GY 7/2 pigment and with the physical color lump of this preparation of compositions

[technical field]

The present invention relates to composition, particularly be the composition of pigment, and with the physical color lump of this preparation of compositions.

[background technology]

A kind of color comprises form and aspect, lightness and chroma, as long as determined form and aspect, lightness and chroma, just can determine unique a kind of color.Stipulate among the Chinese colour system GB/T 15608-1995 that in the Chinese colour system theoretical model, any color can be demarcated with the tone on the color solid, lightness and chroma, and gives certain label.Scaling method is to write out tone H earlier, writes lightness V then, writes chroma C behind oblique line, represent with H V/C, and be example with color 10BG 5.5/6,10BG represents tone, 5.5 expression lightness, 6 expression chromas.

Theoretical value from theoretical model can relate to multinomial important steps such as aberration Δ E, raw material, prescription and technology to the production process of physical color lump.Wherein, Difference Control is to weigh the unalterable quota of a national colours reproducing technology ability, and the degree of approach that aberration is more little, the color theory value is reduced into the color matter sample is high more, and technical difficulty is big more, the scientific research strength that indicates this state simultaneously is strong more, and state of the art is high more.Therefore the research and development technology of physical color lump and research and development achievement in the Chinese colour system theoretical model, embodied the sci-tech innovation ability of China, all had extremely profound significance in the status in color field, the world for development that promotes whole country color science technical field and raising country in the color field.

Coating pigment obtains physical color lump in accordance with regulations, and physical color lump is widely applied to the national life every aspect, radiation with have influence on each field relevant with color.For example, coloured manufacturing, electronic imaging, colored record, multi-media storage and transmission, liquid-crystal display, the practical sample of having contained the national standard under the method for expressing of color, relevant industries comprise: modern architecture and finishing material, clothes, textile materials, dissemination of news medium and printing industry, industries such as multimedia display color.

At present, domesticly also be in the stage of accurately to control to the technical elements that reproduces physical color lump, and this is only the core of color theory using value in the theoretical value from theoretical model.

[summary of the invention]

The composition that the purpose of this invention is to provide a kind of 7.5GY 7/2 pigment reaches the physical color lump of realizing with this composition, the fast light sex change and the favorable reproducibility of this physical color lump coating, and glossiness is moderate, and environmental protection.

A kind of composition of 7.5GY 7/2 pigment consists of by weight:

995～1005 parts of CSC-A base-materials;

PBK7, pigment content are 9%, 0.84～0.86 part;

PG7, pigment content are 20%, 4.06～4.46 parts;

PY42, pigment content are 60%, 24.35～26.35 parts.

Above-mentioned CSC-A base-material main component is an acrylic copolymer, and content is 30～40%, and its average molecular weight range is 15～200,000, median size is 0.1～0.2 μ m, and minimum film-forming temperature is 10～22 ℃, and second-order transition temperature is 25～35 ℃, anionic, pH value are 8.5～10.0.Select TiO for use ₂Content 〉=95%, oil number＜20g/100g, the reducing power Reynolds is several now 1800, and ISO 591 R2 types are as main white pigment, and content is 18～22%.The contrast ratio of this base-material is 0.90～0.96, and stormer viscosity is 90～100KU, when incident angle is 85 °, and 5 °～10 ° of glossiness.

A kind of physical color lump of 7.5GY 7/2 color, press above-mentioned raw materials and proportioning, when incident angle is 85 °, 4 °～6 ° of its glossiness, and aberration Δ E≤0.50 between the standard value, the Chromatic color that is significantly less than GB/T 15608-1995 " Chinese colour system " national Specification are the requirement of sample aberration latitude Δ E≤3.

The preparation method of the physical color lump of above-mentioned 7.5GY 7/2 color comprises the steps:

1. raw material blending: the proportioning by above-mentioned 7.5GY 7/2 color takes by weighing raw material, mixes.

2. coating: in envrionment conditions is relative humidity 50% ± 5%, in 23 ± 2 ℃ of the room temperatures, adopts mechanical coating method, and composition evenly entirely is coated on the White Board, and the coating wet-film thickness is 250 μ m.

3. dry: as to place 50 ± 2 ℃ of dry 3～4h of accurate baking oven to constant weight composition coating, take out, be cooled to room temperature, obtain physical color lump.

Advantage of the present invention: said composition weathering resistance and stability are high, and good proportion repeatability, raw materials used and technological process meet low VOC and zero VOC environmental protection requirement and standard; It is very little that this physical color lump and the standard value in " Chinese colour system " theoretical model are compared aberration, and the order of accuarcy that color realizes is very high, and manufacture craft is concise, has extremely strong practical value.

[embodiment]

Pigment preferred for this invention comprises that international pigment index codes is PBK7 (pigment content is 9%), PG7 (pigment content is 20%) and PY42 (pigment content is 60%).Wherein, pigment indices P BK7 (pigment content is 9%) is a kind of high-carbon black pigment, particle size range 10～15nm, be used for trace adjustment and water down and reduce the saturation ratio and the lightness of color, play the colour killing effect, not causing simultaneously the bigger deviation of generations on the form and aspect, is that a kind of security is higher and improve the very tangible pigment of effect for the fine setting of color; Selected pigment indices P G7 (pigment content is 20%) is a phthalocyanine green, because phthalocyanine pigment has excellent sun-proof and resistance toheat, be insoluble to any solvent, and have extremely bright-coloured form and aspect, belong to best performance in the current senior pigment, a class that cost is minimum; PY42 (pigment content is 60%) iron oxide yellow is one of the most frequently used mineral dye, transfers to have higher vividness when pale yellow, and transferring has certain dark phase when deep yellow, often improves with the composite weathering resistance of bright-colored that makes of organic mill base, itself has extremely strong opacifying power.

Adopting contrast ratio is 0.90～0.96, and stormer viscosity is 90～100KU, and the CSC-A base-material that glossiness (85 °) is 5 °～10 ° is realized the underlying carrier of color as us, and the CSC-A base-material is provided by the Hiachuan Industry Co., Ltd., Shenzhen.

We are called CSC1670002 with the physical color lump that generates, and its standard L* value, standard A * value, standard B* value are respectively 72.8 ,-8.29,12.17, the observed value of this physical color lump and aberration Δ E≤0.50 between the standard value.

Embodiment 1:

Take by weighing 0.85 gram PBK7 by weight, 4.26 gram PG7,25.35 gram PY42, CSC-A base-material 1000 grams.With above-mentioned raw materials mixing mixing, then with the composition behind the mixing, in envrionment conditions is relative humidity 50% ± 5%, in 23 ± 2 ℃ of the room temperatures, adopts mechanical coating method, evenly entirely be coated on the White Board, the coating wet-film thickness is 250 μ m, places 50 ± 2 ℃ of dry 3～4h of accurate baking oven to constant weight then, takes out, be cooled to room temperature, obtain physical color lump.

Embodiment 2: take by weighing 0.84 gram PBK7 by weight, 4.06 gram PG7,24.35 gram PY42, CSC-A base-material 1000 grams.Making processes is with embodiment 1.

Embodiment 3: take by weighing 0.86 gram PBK7 by weight, 4.16 gram PG7,25.35 gram PY42, CSC-A base-material 1005 grams.Making processes is with embodiment 1.

Embodiment 4: take by weighing 0.85 gram PBK7 by weight, 4.46 gram PG7,26.35 gram PY42, CSC-A base-material 995 grams.Making processes is with embodiment 1.

Physical color lump detected result tabulation with embodiment 1 to 4:

Table 1

Circulation ratio: 0.01	Measure the L value	Measure the A value	Measure the B value	Measure aberration Δ E	Glossiness (85 °)
						Embodiment 1	72.80	-8.19	12.17	0.10	5°
Embodiment 2	72.90	-8.19	12.17	0.14	5°
						Embodiment 3	72.80	-8.19	12.17	0.10	5°
Embodiment 4	72.71	-8.31	12.04	0.16	5°

Remarks: in CIE1976 LAB uniform colour space, L represents brightness value; Red/green value that A represents; B represents Huang/indigo plant value; Δ E represents total color difference, is used for the degree of closeness of judgement sample and standard, Δ E=[(L-L*) ²+ (A-A*) ²+ (B-B*) ²] ^1/2Glossiness refers to the gloss intensity with the body surface of data statement.

Detect through DATACOLOR 600 spectrophotometers, in the embodiment of table 1, aberration Δ E≤0.50 between average value measured and the standard value, the Chromatic color that is significantly less than GB/T 15608-1995 Chinese colour system national Specification are the requirement (GB/T 15608-1995) of sample aberration latitude Δ E≤3.

Composition does not have the disadvantages of filming such as loose colour, layering and flocculation in put procedure, volatile organic compounds in technology making processes (VOC) burst size＜200g/L, free formaldehyde≤0.1g/kg, dissoluble lead≤90mg/kg, soluble cadmium≤75mg/kg, soluble chromium≤60mg/kg, soluble mercury≤60mg/kg, LD50/ per os/mouse:＞7000 milligrams/kilogram.The physical color lump color reproducibility is good.

Other some test performances are as shown in the table:

Table 2

Composition weathering resistance (GB/T1865-1997)

Composition heat storage stability (GB 6753.3-86)

Embodiment 1	700h is no abnormal	ΔE≤0.30
			Embodiment 2	700h is no abnormal	ΔE≤0.30
Embodiment 3	700h is no abnormal	ΔE≤0.30
			Embodiment 4	700h is no abnormal	ΔE≤0.30

Can clearly be seen that by last table 2, the composition coating weathering resistance that selected embodiment obtains detects the prescribed value of data fit national standard, and detect by the heat storage stability experiment, colour-change is lower than 0.30, has guaranteed to realize the accuracy and the permanent stability of color in kind.

Claims (4)

1, a kind of composition of 7.5GY 7/2 pigment consists of by weight:

995～1005 parts of CSC-A base-materials;

PBK7, pigment content are 9%, 0.84～0.86 part;

PG7, pigment content are 20%, 4.06～4.46 parts;

PY42, pigment content are 60%, 24.35～26.35 parts;

Above-mentioned CSC-A base-material main component is an acrylic copolymer, and content is 30～40%, and its average molecular weight range is 15～200,000, median size is 0.1～0.2 μ m, and minimum film-forming temperature is 10～22 ℃, and second-order transition temperature is 25～35 ℃, anionic, pH value are 8.5～10.0; Select TiO for use ₂Content 〉=95%, oil number＜20g/100g, the reducing power Reynolds is several now 1800, and ISO 591 R2 types are as main white pigment, and content is 18～22%; The contrast ratio of this base-material is 0.90～0.96, and stormer viscosity is 90～100KU, when incident angle is 85 °, and 5 °～10 ° of glossiness.

2, a kind of physical color lump of 7.5GY 7/2 color is characterized in that: by the raw material and the proportioning preparation of claim 1.

3, the physical color lump of 7.5GY 7/2 color according to claim 2 is characterized in that: when incident angle is 85 °, and 4 °～6 ° of its glossiness, and aberration Δ E≤0.50 between the standard value.

4, the method for practicality color block of preparation claim 2 or 3 described 7.5GY 7/2 colors comprises the steps:

1. raw material blending: take by weighing raw material by proportioning, mix;

2. coating: in envrionment conditions is relative humidity 50% ± 5%, in 23 ± 2 ℃ of the room temperatures, adopts mechanical coating method, and composition evenly entirely is coated on the White Board, and the coating wet-film thickness is 250 μ m;

3. dry: as to place 50 ± 2 ℃ of dry 3～4h of accurate baking oven to constant weight composition coating, take out, be cooled to room temperature, obtain physical color lump.