RU2007118824A - METHOD FOR PRODUCING CELLULOSE TRIACETATE - Google Patents

METHOD FOR PRODUCING CELLULOSE TRIACETATE Download PDF

Info

Publication number
RU2007118824A
RU2007118824A RU2007118824/04A RU2007118824A RU2007118824A RU 2007118824 A RU2007118824 A RU 2007118824A RU 2007118824/04 A RU2007118824/04 A RU 2007118824/04A RU 2007118824 A RU2007118824 A RU 2007118824A RU 2007118824 A RU2007118824 A RU 2007118824A
Authority
RU
Russia
Prior art keywords
cellulose triacetate
acetylation
producing cellulose
catalyst
temperature
Prior art date
Application number
RU2007118824/04A
Other languages
Russian (ru)
Other versions
RU2353627C2 (en
Inventor
Владимир Андреевич Лекарев (RU)
Владимир Андреевич Лекарев
Дамир Шамилович Муратов (RU)
Дамир Шамилович Муратов
Владимир Алексеевич Петров (RU)
Владимир Алексеевич Петров
Original Assignee
Открытое акционерное общество ОАО "Холдингова компани "Тасма" (RU)
Открытое акционерное общество ОАО "Холдинговая компания "Тасма"
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 Открытое акционерное общество ОАО "Холдингова компани "Тасма" (RU), Открытое акционерное общество ОАО "Холдинговая компания "Тасма" filed Critical Открытое акционерное общество ОАО "Холдингова компани "Тасма" (RU)
Priority to RU2007118824/04A priority Critical patent/RU2353627C2/en
Publication of RU2007118824A publication Critical patent/RU2007118824A/en
Application granted granted Critical
Publication of RU2353627C2 publication Critical patent/RU2353627C2/en

Links

Landscapes

  • Polysaccharides And Polysaccharide Derivatives (AREA)

Claims (1)

Способ получения триацетата целлюлозы ацетилированием хлопковой целлюлозы смесью уксусного ангидрида и уксусной кислоты в среде ксилола в присутствии кислотного катализатора, отличающийся тем, что ацетилирование ведут во вращающейся центрифуге при циркуляции смеси состава: уксусный ангидрид 49-51%, уксусная кислота 12-14%, ксилол 36-39%, в качестве катализатора процесса ацетилирования используют хлорную кислоту в количестве 0,75-0,85% от массы целлюлозы, который вводят при температуре процесса 17-19°С, после чего в течение 1-1,5 ч поднимают температуру до 28-30°С и затем поддерживают такую температуру в течение 6-7 ч до начала нейтрализации катализатора.A method of producing cellulose triacetate by acetylation of cotton cellulose with a mixture of acetic anhydride and acetic acid in xylene in the presence of an acid catalyst, characterized in that the acetylation is carried out in a centrifuge during the circulation of a mixture of the composition: acetic anhydride 49-51%, acetic acid 12-14%, xylene 36-39%, as a catalyst for the acetylation process, perchloric acid is used in an amount of 0.75-0.85% by weight of cellulose, which is introduced at a process temperature of 17-19 ° C, after which the temperature is raised for 1-1.5 hours y to 28-30 ° C and then maintained at that temperature for 6-7 hours prior to catalyst neutralization.
RU2007118824/04A 2007-05-21 2007-05-21 Method of obtaining cellulose triacetate RU2353627C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2007118824/04A RU2353627C2 (en) 2007-05-21 2007-05-21 Method of obtaining cellulose triacetate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2007118824/04A RU2353627C2 (en) 2007-05-21 2007-05-21 Method of obtaining cellulose triacetate

Publications (2)

Publication Number Publication Date
RU2007118824A true RU2007118824A (en) 2008-11-27
RU2353627C2 RU2353627C2 (en) 2009-04-27

Family

ID=41019218

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2007118824/04A RU2353627C2 (en) 2007-05-21 2007-05-21 Method of obtaining cellulose triacetate

Country Status (1)

Country Link
RU (1) RU2353627C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114075299A (en) * 2022-01-04 2022-02-22 江苏瑞佳新材料有限公司 Cellulose triacetate and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114075299A (en) * 2022-01-04 2022-02-22 江苏瑞佳新材料有限公司 Cellulose triacetate and preparation method thereof
CN114075299B (en) * 2022-01-04 2022-08-09 江苏瑞佳新材料有限公司 Cellulose triacetate and preparation method thereof

Also Published As

Publication number Publication date
RU2353627C2 (en) 2009-04-27

Similar Documents

Publication Publication Date Title
JP2009235096A5 (en)
BR112013010865A2 (en) production of comb-type polymers by esterification
EA200870581A1 (en) Method of converting nitrile compounds to carbonic acids and related esters
RU2014124695A (en) PARTLY SOLUBLE HIGH-MOLECULAR DEXTRINS
NZ609191A (en) Methods of making l-ornithine phenyl acetate
WO2012099734A3 (en) Improved process for preparation of low molecular weight molybdenum succinimide complexes
JP2013521224A5 (en)
DE10347863A1 (en) Process for the preparation of benzoic acid esters
RU2011148101A (en) NEW SOLVENT CRYSTALS
RU2016134404A (en) CRYSTAL FORM α of COMPOUND A MONOBENZOATE A, METHOD FOR PRODUCING IT AND CONTAINING ITS PHARMACEUTICAL COMPOSITION
RU2007118824A (en) METHOD FOR PRODUCING CELLULOSE TRIACETATE
CN104447919A (en) Refining method of 20,23-dipiperidinyl-5-O-mycaminose-tylonolide bulk drug
NZ591870A (en) Crystalline form of an alkoxyimidazol-1-ylmethyl biphenyl carboxylic acid
RU2006115883A (en) COMPLEX COMPOUND 1,3-BIS (2-HYDROXYETHYL) -5-HYDROXY-6-METHYLURACYL WITH FUMARIC ACID MANIFESTING ANTIHYPOXIC ACTIVITY AND METHOD FOR ITS PREPARATION
TWI525103B (en) Modified cellulose and composite material using the same
EA201790659A1 (en) METHOD FOR OBTAINING COMPLEX ESTERS OF CARBONIC ACIDS IN PRESENCE OF TITANIUM-CONTAINING CATALYST
EA200971019A1 (en) METHODS OF OBTAINING (R) -2-METHILPYRROLIDINE AND (S) -2-METHILPYRROLIDINE AND THEIR SALTS OF WINE ACID
PL400256A1 (en) Method for preparing soluble chitin esters
RU2011114776A (en) Ethyl 1,6-diaryl-4-aroyl-3-hydroxy-2-oxo-8-phenyl-1,7-diazaspiro [4.4] nona-3,6,8-trien-9-carboxylates and a process for the preparation thereof
RU2007122914A (en) METHOD FOR PRODUCING MODIFIED CIS-1,4-POLYISOPRENE
BR112012021386A2 (en) process for the preparation of an alkene
CN102417482A (en) Method for synthesizing ozagrel ethyl ester or ozagrel methyl ester
RU2016123360A (en) METHOD FOR POLYAMIDE SYNTHESIS
WO2012148108A3 (en) Method for preparing lactide from alkyl lactate
RU2010102546A (en) METHOD OF WATER-DISPERSION POWDER FLEGMATIZATION

Legal Events

Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20090522