RO85610B1 - Procedeu de preparare a colorantului negru acid cromatabil - Google Patents
Procedeu de preparare a colorantului negru acid cromatabilInfo
- Publication number
- RO85610B1 RO85610B1 RO108232A RO10823282A RO85610B1 RO 85610 B1 RO85610 B1 RO 85610B1 RO 108232 A RO108232 A RO 108232A RO 10823282 A RO10823282 A RO 10823282A RO 85610 B1 RO85610 B1 RO 85610B1
- Authority
- RO
- Romania
- Prior art keywords
- solution
- acid
- sulfonic acid
- chromatable
- preparing
- Prior art date
Links
- 239000002253 acid Substances 0.000 title abstract 3
- 239000000975 dye Substances 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- ULUIMLJNTCECJU-UHFFFAOYSA-N 3-amino-4-hydroxybenzenesulfonate;hydron Chemical compound NC1=CC(S(O)(=O)=O)=CC=C1O ULUIMLJNTCECJU-UHFFFAOYSA-N 0.000 abstract 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- 239000002518 antifoaming agent Substances 0.000 abstract 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000011541 reaction mixture Substances 0.000 abstract 1
- 235000010288 sodium nitrite Nutrition 0.000 abstract 1
- HIEHAIZHJZLEPQ-UHFFFAOYSA-M sodium;naphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 HIEHAIZHJZLEPQ-UHFFFAOYSA-M 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
Landscapes
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
Inventia se refera la un procedeu de preparare a colorantului negru acid cromatabil, prin tratarea acidului 2-amino-1-fenol-silfonic cu 1,5-dioxinaftalinam în care solutia de alfa -naftalinsulfonat de sodiu cu concentratia de 79%, se dizolva acidul 2-amino-1-fenol-4-sulfonic luat în exces de 10% fata de cantitatea stoichiometrica, se raceste masa de reactie la 5...10 degree C se diazoteaza apoi cu o solutie de NaNO2, se mentine amestecul de reactie la temperatura de 5...10 degree C, timp de 1h sub agitare, neutralizîndu-se acidul sulfonic, dupa care se adauga 1,5-dioxinaftalina si solutia de acvafil ca agent de umectare, în concentratie de 10%, iar dupa 1h se adauga lesie sub forma de solutie cu concentratia de 42% si antispumant, temperatura mentinîndu-se la 10...15 degree C, iar pH-ul la 5,5...6, raportul molar acid 2-aminofenol-4-sulfonic: 1,5-dioxinaftalina fiind de 1,11:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO108232A RO85610B1 (ro) | 1982-07-23 | 1982-07-23 | Procedeu de preparare a colorantului negru acid cromatabil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO108232A RO85610B1 (ro) | 1982-07-23 | 1982-07-23 | Procedeu de preparare a colorantului negru acid cromatabil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO85610A2 RO85610A2 (ro) | 1984-10-31 |
| RO85610B1 true RO85610B1 (ro) | 1984-11-30 |
Family
ID=20111851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO108232A RO85610B1 (ro) | 1982-07-23 | 1982-07-23 | Procedeu de preparare a colorantului negru acid cromatabil |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO85610B1 (ro) |
-
1982
- 1982-07-23 RO RO108232A patent/RO85610B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO85610A2 (ro) | 1984-10-31 |
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