中国化工网首页 >> 化工助手 >> 化学配方数据库
| 配方类型： |
TEXTILES AND THEIR TREATMENT |
| 配方说明： |
Full Stripping |
| 配制方法： |
The following procedure should be employed when maximum dye removal is desired. It will strip printed goods sufficiently to allow overprinting with very light grounds.
1. Set bath at 90'F with 12% owg DS-12. Add sulfuric acid to pH 2.5-3.0.
2. Heat to 212'F and hold hour.
3. Cool slowly to 150'F. Overflow rinse.
4. Set new bath at 70'F with sodium hypochlorite. Adjust pH to 6.5 with acetic acid. If corrosion of equipment is a problem add 2% owg "X-Tan" Special C.
5. Heat to 205'F and hold one hour.
6. Cool slowly to 150'F. Overflow rinse and check goods. (If sufficient stripping has been accomplished, omit the next 3 steps and proceed directly to step 10.) 7. Set new bath at 90'F with 5% owg "Cloritane," 2.5% owg "X-Tan" Special C and 5% ammonium sulfate. Add nitric acid to pH 3.
8. Heat to 205'F and hold 1 hour.
9. Cool slowly to 150'F Overflow rinse.
10. Set new bath at 110'F and antichlor with 4% soldium bisulfite.
Adjust pH to 5.0 with acetic acid.
11 |
|
