RO81975B1 - PROCEDEU DE OBTINERE A HîRTIILOR NEGRE TERMOREZISTENTE - Google Patents
PROCEDEU DE OBTINERE A HîRTIILOR NEGRE TERMOREZISTENTEInfo
- Publication number
- RO81975B1 RO81975B1 RO104256A RO10425681A RO81975B1 RO 81975 B1 RO81975 B1 RO 81975B1 RO 104256 A RO104256 A RO 104256A RO 10425681 A RO10425681 A RO 10425681A RO 81975 B1 RO81975 B1 RO 81975B1
- Authority
- RO
- Romania
- Prior art keywords
- aluminum
- sodium hydroxide
- paper
- papaers
- hydroxide
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 9
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 abstract 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 2
- 229920002678 cellulose Polymers 0.000 abstract 2
- 239000001913 cellulose Substances 0.000 abstract 2
- 239000000835 fiber Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 238000000265 homogenisation Methods 0.000 abstract 1
Landscapes
- Paper (AREA)
Abstract
Procedeu de obtinere a hîrtiilor negre termorezistente prin tratarea pastei de celuloza sulfat natural de rasinoase sau a celulozei albita de rasinoase nuantate si macinate pîna la 33...37 degree SR cu un amestec format din sulfat de aluminiu si hidroxid de sodiu urmata de omogenizarea pastei de hîrtie pîna la fixarea pe fibra a hidroxidului de aluminiu rezultat din reactia dintre sulfatul de aluminiu si hidroxidul de sodiu mentinîndu-se pH-ul paste de hîrtir între 6,5 si 8, care în scopul cresterii rezistentei termice a hîrtiei se adauga în amestec sulfat de aluminiu si hidroxid de sodiu în proportie dozata pentru fixarea pe fibre a hidroxidului de aluminiu în proportie de 4...9% raportat la masa fibrelor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO81104256A RO81975A2 (ro) | 1981-05-11 | 1981-05-11 | Procedeu de obtinere a hirtiilor negre termorezistente |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO81104256A RO81975A2 (ro) | 1981-05-11 | 1981-05-11 | Procedeu de obtinere a hirtiilor negre termorezistente |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO81975B1 true RO81975B1 (ro) | 1983-06-30 |
| RO81975A2 RO81975A2 (ro) | 1983-07-07 |
Family
ID=20109932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO81104256A RO81975A2 (ro) | 1981-05-11 | 1981-05-11 | Procedeu de obtinere a hirtiilor negre termorezistente |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO81975A2 (ro) |
-
1981
- 1981-05-11 RO RO81104256A patent/RO81975A2/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO81975A2 (ro) | 1983-07-07 |
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