SU64107A1 - The method of obtaining viscose - Google Patents

The method of obtaining viscose

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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
Application number
SU39712A
Other languages
Russian (ru)
Inventor
З.М. Ризов
Original Assignee
З.М. Ризов
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by З.М. Ризов filed Critical З.М. Ризов
Priority to SU39712A priority Critical patent/SU64107A1/en
Application granted granted Critical
Publication of SU64107A1 publication Critical patent/SU64107A1/en

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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,

SU39712A 1939-06-03 1939-06-03 The method of obtaining viscose SU64107A1 (en)

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

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Family Applications (1)

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SU (1) SU64107A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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