RU2223971C1 - Cellulose acetate manufacture process - Google Patents
Cellulose acetate manufacture process Download PDFInfo
- 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
- Authority
- RU
- Russia
- Prior art keywords
- cellulose acetate
- water
- membranes
- cigarette filters
- acetone
- Prior art date
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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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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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)
Publication Number | Publication Date |
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RU2223971C1 true RU2223971C1 (en) | 2004-02-20 |
RU2002123620A RU2002123620A (en) | 2004-03-10 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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RU2002123620/04A RU2223971C1 (en) | 2002-09-05 | 2002-09-05 | Cellulose acetate manufacture process |
Country Status (1)
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RU (1) | RU2223971C1 (en) |
Cited By (1)
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 |
-
2002
- 2002-09-05 RU RU2002123620/04A patent/RU2223971C1/en not_active IP Right Cessation
Non-Patent Citations (2)
Title |
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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)
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 |
Also Published As
Publication number | Publication date |
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RU2002123620A (en) | 2004-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC4A | Invention patent assignment |
Effective date: 20060207 |
|
MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20070906 |