Material is divided into organic and inorganic two types, in fact, in the pigment industry can also be classified, pigment is often divided into two types of organic pigment and inorganic pigment, inorganic pigment is representative of iron oxide pigment, such as iron oxide blue, iron oxide brown and so on. Today, we are going to say that we are not an inorganic pigment, but the relative organic pigment, here we come to understand the type and application of organic pigment.
In industrial applications commonly known organic pigment as colouring agent, informally referred to it as a kind of insoluble in water, insoluble in water) and was coloring material is fully decentralized and change its absorption spectrum and color of a kind of organic matter.
Pigment can be divided into two major categories: organic pigment and inorganic pigment.
Due to the low price of inorganic pigment, high hiding power, and therefore the application of a large proportion of the paint industry. With the development of social economy, people's living standards improve, the application of organic pigment in paint industry is increasing rapidly. In recent years, with the rapid development of China's paint industry, new paint has been developed, the demand for organic pigment increased rapidly. This also provides a good opportunity for the development of pigment industry. Organic pigments manufacturers have the responsibility to cooperate closely to keep up with the development of coating industry needs, development and production with organic pigment coating products.
Classification and development of organic pigment
There are many kinds of organic pigment, which have different classification methods.
(1) according to the chromatographic can be divided into: yellow orange pigment, red (with yellow, green) pigment, purple, brown pigment and green pigment.
(2) according to its application areas can be divided into: paint, ink, plastic (rubber) with pigment, cosmetics, 4 kinds of pigment.
(3) classified according to their chemical structure type, it can be divided into 3 categories: azo, phthalocyanine and heterocyclic.
Azo pigment
Azo pigment is a kind of pigment which contains "NN" in the structure of pigment. The structure of this kind of variety is the largest, the output is the biggest, the chromatography is rich, mainly for yellow, orange, red variety, according to its structure can be divided into 4 categories.
(1) insoluble single even nitrogen pigment. In the molecular structure of pigment containing only one azo group (R - NN - R '). The pigment insoluble in water, its acid resistance, alkali resistance, seepage performance excellent, light performance is acceptable, but heat resistance, solvent slightly poor performance. Fast yellow G (Hansa yellow) P.Y.1, Hansa yellow 10g (Hansa yellow 10g) P.Y.3, YONGGU orange RNP.O.5, toluene amine red P.R.3, YONGGU red F4RP.R.8, toluene amine purple P.R.13 representative varieties such as. But there are also some light resistance, heat resistance, solvent resistance better genus of high-grade paint varieties such as: YONGGU red FRRP.R.2, YONGGU red FGRP.R.112, YONGGU pink FBBP.R.146, YONGGU red F3RKP.R.170, such as varieties.
(2) insoluble azo dyes. Pigment molecule structure contains 2 azo group (R 'R - NN - R - NN). Due to the pigment structure and relative molecular mass increase, improve the performance of the pigment, the varieties of heat resistance, resistance to solvent properties are excellent and high concentrations of coloring and typical varieties are: diphenyl amine yellow GP.Y.12, permanent yellow GRP.Y.13, permanent yellow GP.Y.14, permanent yellow HRP.Y.83, YONGGU orange GP.O.13, YONGGU orange F2GP.O.34.
(3) azo Toner (insoluble azo pigment). This kind of pigment in the manufacturing process through a metal salt lake. The pigment color bright, because of the lake and so its resistance to water permeability is poor, and heat resistance, resistance to solvent, due to its light performance is not excellent and thus less for that requires high weatherability of coatings. Representative varieties are mainly P.R.49 Li sol red, barium salt lake, P.R.48 fast red (2B erythroid series varieties): fast scarlet BBN barium salt lake yellow light red P.R.48:
1, fast red BBC calcium salt lake blue red P.R.48
2, fast red BBS strontium salt lake red light P.R.48
3, fast red BBM manganese salt lake P.R.48
4, C, yellow light red P.R.53 barium salt lake, vertical cable Bao Hong BK (magenta 4b) P.R.57, blue red calcium purple lake, fast red S2BL of barium salt lake yellow light red P.R.243 and heat resistance of the varieties can be reached 210 DEG C.
(4) condensation of azo pigment (large molecular pigment). Because of its pigment relative molecular weight is larger than that of the common azo pigment, and the molecular structure has 2 or more than 2 amide groups, so the physical properties of the pigment are better improved. Light fastness reached 7, and has excellent heat resistance and solvent resistance, high-grade pigments. Can be used for the high performance requirements of the paint varieties: such as large yellow GRLP.Y.166, macromolecular red RP.R.166, large red BRP.R.144, macromolecular brown 5RP.Br.23.