Environmental Protection Requirements And The Latest Results Of Dye
Green dye should meet the following conditions:
Free or do not produce harmful aromatic amines; dye their non-carcinogenic, allergenic, acute toxicity; the use of formaldehyde and heavy metals can be extracted in the limit the following; without environmental hormone; non-persistent organic pollutants; not polluting the environment of hazardous chemicals; not produce the chemical pollution of the environment; color fastness and superior to disable the use of dyes.
Environmental Disperse Dyes Easier to disperse through the REACH registration requirements have BASF polyester and blended fabrics for the continuous dyeing of DispersolC-VS dyes, Japan-based drug company applies to polyester and nylon fabrics dyed Kayalon POlyestersLW disperse dyes, Huntsman Cibacet EL disperse dyes, BASF Corporation CompactEco-CC-E (Eco-CC-S) dyes, DyStar DianixAC-E (UPH) dye.
Environment-friendly reactive dyes Reactive with China's cotton fabric and cotton fabric of the main dye, but the individual dyes are banned dyes, such as the activity of yellow KR, Reactive Blue KD-7G, Reactive Yellow Brown K-GR, Reactive Red H-10B, Reactive Yellow KE-4RN, etc., these dyes can not meet the REACH registration requirements.
Pair of reactive dyes in a dark stain in recent years is widely used in environment-friendly reactive dyes have been double-key development, the basic line with REACH registration requirements, new environmental protection needs of the corresponding dye application technology, should be targeted for new techniques and new technology development. On the part of the environmentally friendly two-Reactive Dyes in continuous pad-baking solid method, vapor-solid method and the rolling process steam method results show that green dyes equally adaptive process, should be targeted to use.
Environment-friendly dyes Banned dyes and direct dyes in the majority, so the development of environment-friendly dyes dyestuff industry has become the focus of new product development. In recent years newly developed environment-friendly dyes are the following:
1, amino-stilbene disulfonic acid class of dyes: These dyes bright color, fastness moderate, direct light
Orange GGL (CI Direct Orange 39) is the good performance of environmental protection dye. CI Direct Yellow 3BLL (CI Direct Yellow 106) for the triazole dyes, light fastness resistance of 6 ~ 7. Direct light green IRC (CI Direct Green 34) dyeing rate, has excellent color fastness, light fastness resistance of 6 ~ 7, washing fastness up to 3 ~ 4.
2,4.4 `- diaminodiphenyl urea dyes: These dyes non-carcinogenic, high light fastness. Application of more varieties, are environmentally friendly dyes. Such as CI Direct Yellow RSC (CI Direct Yellow 50), CI Direct Red F3B (CI Direct Red 80), CI Direct Brown 112, CI Direct Brown 126, CI Direct Brown 152, and so on.
3,4.4 `- 2-amino-benzoyl for aniline dyes: good fastness of these dyes are environment-friendly dyes. Such as direct green NB (CI Direct Green 89), direct yellow brown N-D3G (CI Direct Brown 223), Direct Black N-BN (CI Direct Black 166), etc..
4,4.4 `- Diaminobenzenesulfonanilide for aniline dyes: These dyes are diamino compounds to synthetic black dyes, dyeing and fastness properties are good. It is widely used in cotton, linen, viscose, silk, leather dyeing. Have been developed and selected alternative products banned direct dyes CI Direct Black 166 (Direct Black N-BN), CI Acid Black 210 (Acid Black NT), CI Acid Black 234 and so on.
5, 2-amino-heterocyclic dyes: These dyes are 2-amino-heterocyclic compounds synthesized dyes, such as dibenzodioxins triazine dyes, such dyes bright color, color intensity and staining prison high resistance, light fastness up to seven. Representative varieties of CI Direct Blue 106 (CI Direct Blue FF2GL), CI Direct Blue 108 (CI Direct Blue FFRL) and so on.
6, polyester / cotton (T / R) fabric with environment-friendly dyes: polyester / cotton, polyester / rayon blended fabrics with different types of fiber dyeing bath, which requires direct dyes with excellent high temperature stability, has good lifting power and the recurrence of, and has good fastness and environmental performance. Shanghai has developed a direct blend dyes D-dye, is to achieve the performance of environment-friendly dyes, the current has reached more than 25 varieties, such as CI Direct Yellow 86 (direct blending yellow DR), CI Direct Yellow 106 (direct blending yellow D -3RLL), CI224 directly blended red D-GLN, CI Direct Violet 66 (direct blending purple D-5BL), CI Direct Blue 70 (Direct blending Blue D-RGL), CI95 directly blended Brown D-RS, CI Direct Black 166 (direct blending black D-ANBA) and so on. Some individual species are copper complex, copper should be free ETAD prescribed limits (250mg/kg) range.
7, Japan-based pharmaceutical companies to develop and screening KayaeelonC dye: a CI Direct Yellow 161 (Yellow C? 3RL), CI Direct Red 83 (RubineC? BL), CI Direct Blue 288 (Blue C? BK), CI Direct Green 59 (CaeenC? CK), CI Direct Black 117 (Crey C? RL) and so on.
8, natural plant dyes Natural dye is extracted from plants, animal or mineral resources available, little or no dye through chemical processing. According to the source of natural dyes can be divided into vegetable dyes, animal dyes and mineral dyes. Madder plant dyes, Lithospermum, hematoxylin, indigo, saffron, pomegranate, gardenia, tea. Animal dye worm (purple) plastic, carmine and insect. Mine a variety of inorganic metal salt dye materials and metal oxides. Carotene by chemical composition can be divided into categories, anthraquinone, naphthoquinone type, flavonoids, curcuminoids, indigo, chlorophyll a total of 7 categories.
Classic colors of natural dyes in culture, has been playing a very exciting role. Natural dyes include: mineral, animal and plant dyes, plant dyes of which the most diversified and most extensive range of applications. Ancient historical records dating back to the earliest plant dyes the Chou dynasty, dynasties and then stained more specialized in managing the institutions.
Addition to natural color, the plant quiet strength and stability of soft and full of temperament, with many dye plants also tasked with the role of herbs or evil, making the color of plants infected with a unique charm outstanding. Blue dye, such as grass infected with the bacteria detoxification, bleeding swelling of the effect; and stained yellow wormwood, is the good fortune of amulets in folk; Others, such as Su-Fang, safflower, Lithospermum, onions and other dye plants, are also used as folk medicine. The identity of both herbs and dye plants, can
Environmental Protection Requirements And The Latest Results Of Dye
By: zhangbetty
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