The introduction of direct dyes

(1) class 2 amino 2 disulfonic acid styrene direct dye: this kind of bright color and dye fastness is moderate, direct fast orange GGL (ci directly orange 39) is with good performance and environmentally friendly dyes. Direct fast yellow three BLL (ci direct yellow 106) for the three azole nitrogen direct dye, resistant to sunlight fastness grade 6 ~ 7. Direct fast green IRC (ci directly green 34) dyeing rate is high, has excellent color fastness, resistance to sunlight fastness grade 6 ~ 7, resistant to washing fastness grade 3 ~ 4.

(2) 4.4 ` - diamino diphenyl urea class direct dye: this kind of no carcinogenic dyes, the sun high fastness. There are kinds of applications, environment-friendly dyes. Such as direct fast yellow RSC (ci directly yellow 50), direct fast red F3B (ci direct red 80), 112, ci ci direct brown brown 126, ci direct brown 152 directly.

(3) 4.4 ` - diamino benzoyl for aniline dyes directly: this kind of dye fastness is good, is environment-friendly dyes. Such as direct green N - B (89) ci directly green, yellow brown N - directly D3G (ci direct brown 223), direct black N - BN (ci direct black 166), etc.

(4) 4.4 ` - 2 amino benzene sulfonyl for aniline dyes directly: this kind of dyes are direct dye 2 amino compounds for synthesis of black, dyeing properties and fastness are good. It is widely used for cotton, linen, viscose fiber, silk, leather dyeing. Developed and select alternative disable direct dye products, such as ci direct black 166 direct black N - (BN), ci acid black 210 acid black (NT), ci acid black 234, etc.

(5) 2 amino heterocyclic direct dye, the dye is 2 amino heterocyclic compound synthesis of direct dyes, such as two benzene and two oxazine direct dye, the dye colour and lustre bright-coloured, high tinting strength and color fastness, resistance to sunlight fastness grade 7. Representative varieties have C.I. direct blue 106 (direct fast brilliant blue FF2GL), C.I. direct blue 108 (direct fast blue FFRL), etc.

(6) polyester/cotton, polyester/viscose fabric dye directly with environmentally friendly: polyester/cotton, polyester/viscose blended fabric with different properties, such as fiber dyeing, this requires direct dye with excellent high temperature stability, good lift and reproducibility, has good fastness and environmental performance. Shanghai dye company development directly blended type D dye, is able to achieve the performance of environmental protection dye, the breed has amounted to more than 25, such as ci directly yellow 86 (direct blending yellow D - R), ci directly yellow 106 (direct blending yellow D - 3 RLL), ci 224 direct blending red D - GLN, ci directly purple 66 (directly blended purple D - 5 bl), ci direct blue 70 (direct blending blue D - RGL), ci 95 directly blended brown D - RS, ci direct black 166 (direct blending black D - ANBA), etc. In which individual species is copper complex, the limit value of free copper shall, in accordance with the provisions of the ETAD (250 mg/kg).

(7) Japanese medicine company development and screening Kayaeelon C type dye: 161 ci directly Yellow (Yellow C - 3 RL), ci direct red 83 (Rubine C - BL), C.I. direct Blue 288 (Blue C - BK), ci directly green 59 (Caeen C - CK), ci direct black 117 (Crey C - RL), etc.

Thailand hyundai introduced Modern Direct series advanced Direct dye, Dystar company developed a series of Sirius Plus Direct dye, Ciba company launched Cibafix ECO Direct dye, BASF company launched Diazol series Direct dye, Yorkshire Benganil series Direct dye, etc. These dyes with similar functions, such as bright color, fast, high fastness, is environment-friendly dyes do not contain heavy metals, has excellent high temperature stability, is suitable for polyester/cotton blended fabric dyeing one bath one step method.