A dye is a substance with color. But the color of the material is not necessarily a dye. As a dye, must be able to make a certain color attached to the fiber, and not easy to fall off, discoloration. The dye is usually dissolved in water, a part of the dye mordant dyes can adhere to the needs of the fiber. Dyes and pigments absorb part of the wavelength of light, so look with color. Compared with dyes, pigment is not soluble in water, it will not be attached to other substances. Archaeological data show that dyeing technology in India and the Middle East has more than five thousand years of history. At that time, the dye was driven by plants or minerals and was rarely treated. Most dyes from plants (such as roots, berries, bark, leaves and wood etc), but little of this dye is widely used for business on.
Dye name
All kinds of dyes mentioned above not only have a large number, but also have different properties and methods of use. In order to distinguish and master, the unified naming method of dyes has been formally adopted. As long as you see the name of the dye, you can probably know what kind of dye is a dye, as well as its color, luster, etc.. The three section named unified use of nomenclature of dyes in China, the name of the dye is divided into three parts, namely, color and endnotes called crown.
The name of the 1 crown is the name of a dye that is classified according to its method of application or nature, such as dispersion, reduction, activity, direct, etc.. Plastic online plastic Encyclopedia http://baike.21cp.com
The 2 color is said to use the dye in accordance with the standard method of dyeing the fabric can be obtained after the color of the name, generally have the following four methods
(1) use physical names such as red, green, blue, etc..
(2) with botanical names such as orange, pink, green, rose, etc..
(3) expressed by natural phenomena, such as blue, yellow etc..
(4) expressed by animal names, such as gray, yellow etc..
3 color, endnote said performance, state, concentration and what is fabric, - like represented by the letters and numbers.
The three paragraph of the dye, the use of more convenient. For example, reducing purple RR, you can know that this is a red purple vat dye, the crown is said to restore, the color is said to be purple, R said with red light, two R red light heavier.
At present, the name of the dye has not been uniform in all countries in the world, the dyeing plant for their production of each dye to take a name, so there is the same kind of dye may have several situations.
Chinese dye named plastic plastic online encyclopedia http://baike.21cp.com
1 crown said
Direct, direct, direct covelline, direct diazo, acid, acid, acid complex, acidic, neutral, cationic, active, soluble reduction, reduction, dispersion, vulcanization, seikkyi, naphthol, blue color, soluble sulfide, oxidation, condensation, fast color, blending.
2 color yellow, golden yellow, called yellow, deep yellow, orange, red, red, pink, red, magenta, red, purple, red, purple, blue, blue, blue, blue, green, light green, dark green, yellow brown, red brown, brown, dark brown, olive green, grass green. Gray, black etc..
3 color light blue or green light with B-; G- with yellow and green light; R- with the red light quality F- color pure dark or darker; D-; T- said deep.
Properties and uses
C- resistant to chlorine, cotton
I- 'vat dye fastness; plastic plastic online encyclopedia http://baike.21cp.com
K- cold dyeing (China's reactive dyes K said heat stain) plastic online plastic Encyclopedia http://baike.21cp.com
L- light fastness or good levelness;
M- mixture; plastic online plastic Encyclopedia http://baike.21cp.com
N- new or standard; plastic online plastic Encyclopedia http://baike.21cp.com
P- suitable for printing;
High concentration of X- (X of Chinese reactive dyes).
The crown said basically the same dye, and color that suffix is somewhat different, often because of different manufacturers. China needs to adopt a unified naming rule.