RU2223971C1 - Cellulose acetate manufacture process - Google Patents

Cellulose acetate manufacture process Download PDF

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Publication number
RU2223971C1
RU2223971C1 RU2002123620/04A RU2002123620A RU2223971C1 RU 2223971 C1 RU2223971 C1 RU 2223971C1 RU 2002123620/04 A RU2002123620/04 A RU 2002123620/04A RU 2002123620 A RU2002123620 A RU 2002123620A RU 2223971 C1 RU2223971 C1 RU 2223971C1
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RU
Russia
Prior art keywords
cellulose acetate
water
membranes
cigarette filters
acetone
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RU2002123620/04A
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Russian (ru)
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RU2002123620A (en
Inventor
Г.Н. Тимофеева
А.Б. Шиповска
А.Б. Шиповская
Original Assignee
Тимофеева Галина Николаевна
Шиповская Анна Борисовна
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Application filed by Тимофеева Галина Николаевна, Шиповская Анна Борисовна filed Critical Тимофеева Галина Николаевна
Priority to RU2002123620/04A priority Critical patent/RU2223971C1/en
Application granted granted Critical
Publication of RU2223971C1 publication Critical patent/RU2223971C1/en
Publication of RU2002123620A publication Critical patent/RU2002123620A/en

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  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Artificial Filaments (AREA)

Abstract

FIELD: cellulose derivatives. SUBSTANCE: cellulose acetate solution suitable in fabrication of fibers, films, membranes, and cigarette filters is prepared via first providing powdered cellulose acetate, washing thereof in water, drying to moisture 5.1 to 30%, and dissolution in acetone or water/acetone mixture. Thus obtained polymer is characterized by new spatial structure enabling higher selectivity of membranes and improved retention capacity of sorbents in cigarette filters. Application of cellulose acetate of invention also leads to considerable rise in cholesterol-retentive capacity of biofilters. EFFECT: enhanced useful properties of product. 4 tbl, 9 ex

Description

Текст описания в факсимильном виде (см. графическую часть) Description text in facsimile form (see graphic part)

Claims (1)

Способ получения ацетата целлюлозы в виде раствора для формования волокон, пленок, мембран, сигаретных фильтров, включающий получение порошкообразного ацетата целлюлозы, его промывку в воде, сушку и растворение в ацетоне или смеси его с водой, отличающийся тем, что сушку осуществляют до влажности 5,1-30% от массы сухого полимера.A method of producing cellulose acetate in the form of a solution for forming fibers, films, membranes, cigarette filters, comprising obtaining a powdered cellulose acetate, washing it in water, drying and dissolving it in acetone or a mixture thereof with water, characterized in that it is dried to a moisture content of 5, 1-30% by weight of dry polymer.
RU2002123620/04A 2002-09-05 2002-09-05 Cellulose acetate manufacture process RU2223971C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2002123620/04A RU2223971C1 (en) 2002-09-05 2002-09-05 Cellulose acetate manufacture process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2002123620/04A RU2223971C1 (en) 2002-09-05 2002-09-05 Cellulose acetate manufacture process

Publications (2)

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RU2223971C1 true RU2223971C1 (en) 2004-02-20
RU2002123620A RU2002123620A (en) 2004-03-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2602151C2 (en) * 2014-11-05 2016-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Саратовский государственный технический университет имени Гагарина Ю.А. (ФГБОУ ВПО "СГТУ имени Гагарина Ю.А.") Method of modifying cellulose acetates to obtain filtration membranes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
АКИМ Э.Л. и др. Целлюлоза для ацетилирования и ацетаты целлюлозы. Изд. 2-е, испр. и доп. - Лесная промышленность, 1971, c. 232. *
РОГОВИН З.А. Основы химии и технологии химических волокон. - М.: Химия, 1964, т.1, 592 с. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2602151C2 (en) * 2014-11-05 2016-11-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Саратовский государственный технический университет имени Гагарина Ю.А. (ФГБОУ ВПО "СГТУ имени Гагарина Ю.А.") Method of modifying cellulose acetates to obtain filtration membranes

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PC4A Invention patent assignment

Effective date: 20060207

MM4A The patent is invalid due to non-payment of fees

Effective date: 20070906