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Application

Application Of Direct Dyes

1. Recommended dyeing
1.1

Acid dyestuff leveling agent
0.5~1.5%
Na2SO4
0~10%
Ammonium sulfate or Acetate
2~4%
Acetic acid 80%
X%
Adjust PH 4-5, light color PH to 6.0
 

1.2 Y% Dyes

Note: Dyeing 30-60min in 98-100℃ (Dyeing time of salt depend on the dyeing depth); For the light color or difficult to dye, recommended keeping in 65-75℃ for 10-15min.

2. Post-processing and acidizing
Recommend add 1-2% formic acid in the last shower bath. Improving the wooi and the spinning performan.ce of scattered wool and woolen sliver. also the fabric’s heat water washing fastness and mouldproof .

3. Fixing
Usually less dosage of dyes are used in light and extra light color . so no need to fix color with good color fastness. But also accords to demands; in deep color, the technology and formula of fixation like below:

Bath ratio
1:10
Dye•fixing agent
1-2g/L
Acetic acid
0.5g/L
PH
4.5-5.0
Temperature • time
70℃·20min

For Reference only

Application Of Direct Dyes

1. Exhaust dyeing
1.1 Recipe of dyeing bath

Dyeing method
Weak Alkli
Neutral
Dyestuff,%(owf)
x
y
Na2CO3,g/L
1~2
-
Na2SO4,g/L
0~30
0~30

1.2 Dyeing procedure
1.2.1 Common dyeing

1.2.2 Dyeing bath with disperse dyes


2. Padding
2.1 Recipe of padding tiquor

Dyestuff
X  g/L
Levelling agent
20  g/L
Na3PO4
200 g/L
Other Additives
20  g/L

2.2 Procedure
Padding(Liquor pick-up 80%,Temp,60℃)→Steaming (Temp 100~103℃.Time.1-4min)→Rinsing→Fixing→Drying.
For Reference only

Add: Tianhu Town, Song County, Luoyang City, Henan Province
Tel: +86-379-66578111 Fax: +86-379-66578287
Sales Department: Manager Su 13721671000
E-mail: luoyanghuasu1@163.com
Copyright(C)2017 , Luoyang Huasu Dyestuff Co., Ltd All Rights Reserved.  Supported by  ChemNet  ChinaChemNet
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