SU64107A1 - The method of obtaining viscose - Google Patents
The method of obtaining viscoseInfo
- Publication number
- SU64107A1 SU64107A1 SU39712A SU321374A SU64107A1 SU 64107 A1 SU64107 A1 SU 64107A1 SU 39712 A SU39712 A SU 39712A SU 321374 A SU321374 A SU 321374A SU 64107 A1 SU64107 A1 SU 64107A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- viscose
- cellulose
- alphacellulose
- xanthate
- weight
- Prior art date
Links
- 229920000297 Rayon Polymers 0.000 title description 10
- 238000000034 method Methods 0.000 title description 6
- 229920002678 cellulose Polymers 0.000 description 9
- 239000001913 cellulose Substances 0.000 description 9
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 7
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 4
- 239000012991 xanthate Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 235000010265 sodium sulphite Nutrition 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005517 mercerization Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
Вопрос получени вискозы с относительпо большим содержанием целлюлозы не нов, ему посв щён р д работ, но рационального способа не имеетс .The issue of obtaining viscose with a relatively high content of cellulose is not new, it is dedicated to a number of works, but there is no rational way.
Автором насто щего изобретени предлагаетс получать вискозу с содержанием 9-10% целлюлозы из целлюлозы, мерсеризированной с применением сульфита натри , по сл1едующему методу. Алкалицеллюлозу измельчают и оставл ют на досозревание при 20-21° в течение 24 часов. Далее массу обрабатывают при температуре 30-35° сероуглеродом , вз тым в количестве 20-25% от веса альфацеллюлозы. Из полученного таким образом ксантогената обычными методами приготовл ют вискозу.The author of the present invention proposes to obtain viscose with a content of 9-10% cellulose from cellulose, mercerized using sodium sulphite, according to the next method. The alkali cellulose is crushed and allowed to mature at 20-21 ° for 24 hours. Next, the mass is treated at a temperature of 30-35 ° carbon disulfide, taken in an amount of 20-25% by weight of alphacellulose. Viscose is prepared from the xanthate thus obtained by conventional methods.
По прин тым в насто щее врем рецептам получени ксантогената примен ют 30-34% сероуглерода от веса альфацеллюлозы; таким образом расход этого продукта при применении предлагаемого метода снижаетс на 40%.According to currently accepted recipes for xanthate, 30-34% carbon disulfide is used based on the weight of alphacellulose; thus, the consumption of this product in the application of the proposed method is reduced by 40%.
П р и м е р. Мерсеризуют сульфитную целлюлозу по общеприн тому технологическому режиму, добавл к щёлочи 20-25 г сульфита натри на один литр раствора . Алкалицеллюлозу измельчают и подвергают 24-часовому досозреванию при температуре 20-21°, после чего обрабатывают при 30- 35° сероуглеродом, вз тым в количестве 20% от веса альфацеллюлозы . Общее врем ксантогенировани , включа загрузку и разгрузку, занимает около трёх часов. Температура в 30-35° при проведении процесса создаётс пропусканием в рубащку барата тёплой воды. Из полученного таким образом ксантогената обычным образом получают вискозу, содержащую 9-10% целлюлозы в растворе. Полученна вискоза имеет в зкость 40-50 секунд (из растворител ) и зрелость 7-9 по хлористому аммонию.PRI me R. Sulfite cellulose is mercerized in accordance with the generally accepted technological regime, adding 20-25 g of sodium sulfite to one liter of solution to the alkali. Alkalicellulose is crushed and subjected to 24-hour maturation at a temperature of 20-21 °, then treated at 30-35 ° with carbon disulfide, taken in an amount of 20% of the weight of alphacellulose. The total xanthogenesis time, including loading and unloading, takes about three hours. A temperature of 30-35 ° during the process is created by passing warm water to the barant. From the xanthate thus obtained, viscose is obtained in the usual manner, containing 9-10% cellulose in solution. The resulting viscose has a viscosity of 40-50 seconds (from solvent) and a maturity of 7–9 for ammonium chloride.
Несколько пониженна зрелость вискозы требует несколько иного, чем обычно, состава осадительной ванны. Пр едмет изобретени Способ получени вискозы, содержащей до 9-10% целлюлозы, с применением сульфита натри при мерсеризации исходной целлюлозы, отличающийс тем, что дл понижени содержани сероуглерода в вискозе измельчённую алкалицеллюлозу оставл ют на досозревание в течение около 24 часов при , после чего её сульфадиг руют, при температуре 30-35°, 20-25% сероуглерода от веса альфацеллюлозы и из полученного ксантогената готов т по-обычному вискозу, The slightly reduced maturity of viscose requires a slightly different than usual composition of the precipitation bath. Method of Invention A method of producing viscose containing up to 9-10% cellulose using sodium sulfite during the mercerization of the original cellulose, characterized in that to reduce the content of carbon disulphide in viscose, the crushed alkali cellulose is left for maturity for about 24 hours at which point sulphadium, at a temperature of 30-35 °, 20-25% carbon disulphide based on the weight of alphacellulose and prepared from xanthate obtained in the usual viscose,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU39712A SU64107A1 (en) | 1939-06-03 | 1939-06-03 | The method of obtaining viscose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU39712A SU64107A1 (en) | 1939-06-03 | 1939-06-03 | The method of obtaining viscose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU64107A1 true SU64107A1 (en) | 1943-11-30 |
Family
ID=48244905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU39712A SU64107A1 (en) | 1939-06-03 | 1939-06-03 | The method of obtaining viscose |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU64107A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6725919B2 (en) | 1998-12-07 | 2004-04-27 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
-
1939
- 1939-06-03 SU SU39712A patent/SU64107A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6725919B2 (en) | 1998-12-07 | 2004-04-27 | Shell Oil Company | Forming a wellbore casing while simultaneously drilling a wellbore |
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