RO86548B1 - Celuloza microcristalina si procedeu de obtinere a acesteia - Google Patents
Celuloza microcristalina si procedeu de obtinere a acesteiaInfo
- Publication number
- RO86548B1 RO86548B1 RO109684A RO10968483A RO86548B1 RO 86548 B1 RO86548 B1 RO 86548B1 RO 109684 A RO109684 A RO 109684A RO 10968483 A RO10968483 A RO 10968483A RO 86548 B1 RO86548 B1 RO 86548B1
- Authority
- RO
- Romania
- Prior art keywords
- microcrystalline cellulose
- cellulose
- h2so4
- increase
- order
- Prior art date
Links
- 229920000168 Microcrystalline cellulose Polymers 0.000 title abstract 3
- 235000019813 microcrystalline cellulose Nutrition 0.000 title abstract 3
- 239000008108 microcrystalline cellulose Substances 0.000 title abstract 3
- 229940016286 microcrystalline cellulose Drugs 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 235000010980 cellulose Nutrition 0.000 abstract 2
- 229920002678 cellulose Polymers 0.000 abstract 2
- 239000001913 cellulose Substances 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- 240000000731 Fagus sylvatica Species 0.000 abstract 1
- 235000010099 Fagus sylvatica Nutrition 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Inventia de fata se refera la o celuloza microcristalina care, în scopul maririi capacitatii de retinere a ionilor metalici din condens si a cresterii stabilitii în timp, prezinta de 542 un indice de cristalizate de 74,4% un coeficient de filtrare de 0,94x10 la puterea -3, o suprafata specifica de 10,84 m la puterea 2/g densitatea în gramada si continutul în cenusa fiind de 0,127g/cm la puterea 3 respectiv 0,19 iar suma fractiilor sub 71 niu fiind de 70,08%. Procedeul de obtinere a celulozei conform inventiei se realizeaza prin hidroliza cu o solutie concentrata de H2SO4 a celulozei de fag, la un hidromodul de 1 : 20, urmata de filtrare, spalare cu apa demineralizata la un pH neutru a produsului hidrolizat, uscare si macinare. în scopul obtinerii unei celuloze microcristaline cu caracteristici structurale si fizico-chimice superioare se utilizeaza H2SO4 de concentratie 25% la temperatura de 45 degree C, timp de 4h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109684A RO86548B1 (ro) | 1983-01-12 | 1983-01-12 | Celuloza microcristalina si procedeu de obtinere a acesteia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO109684A RO86548B1 (ro) | 1983-01-12 | 1983-01-12 | Celuloza microcristalina si procedeu de obtinere a acesteia |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO86548A2 RO86548A2 (ro) | 1985-06-29 |
| RO86548B1 true RO86548B1 (ro) | 1985-07-01 |
Family
ID=20112531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO109684A RO86548B1 (ro) | 1983-01-12 | 1983-01-12 | Celuloza microcristalina si procedeu de obtinere a acesteia |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO86548B1 (ro) |
-
1983
- 1983-01-12 RO RO109684A patent/RO86548B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO86548A2 (ro) | 1985-06-29 |
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