[특허]Process and arrangement for preparing a solution of cellulose

Process and arrangement for preparing a solution of cellulose 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08J-003/11
출원번호	US-0742093 (1991-08-02)
우선권정보	AU-0002036 (1988-08-16)
발명자 / 주소	Zikeli Stefan (Regau ATX) Wolschner Bernd (Vcklabruck ATX) Eichinger Dieter (Vcklabruck ATX) Jurkovic Raimund (Lenzing ATX) Firgo Heinrich (Vcklabruck ATX)
출원인 / 주소	Lenzing Aktiengesellschaft (Lenzing ATX 03)
인용정보	피인용 횟수 : 44 인용 특허 : 0

초록 ▼

There is disclosed a process for preparing solutions of cellulose in aqueous tertiary amine oxides from a suspension of cellulose in an aqueous solution of the tertiary amine oxide by supplying heat at a reduced pressure. The suspension is transported over a heating surface, spread in layers or coats, until a homogenous solution of the cellulose has formed, which has a viscosity of between 50 and 15,000 Pas.s. Feeding of the suspension and drawing-off of the homogenous solution are carried out continuously. The solutions are prepared in an indirectly heated evacuatable vessel provided with a stirring device. The vessel is designed as a cylindrical container including a centrically mounted stirring shaft having agitators joined thereto, the radial distance of the agitators from the internal wall of the container being 20 mm at the most. There are provided an intake for the cellulose suspension in the upper part of the container and an outlet for the homogenous collulose solution in its lower end.

대표청구항 ▼

A process for preparing a solution of cellulose in aqueous tertiary amine oxide from a suspension of cellulose in an aqueous solution of said tertiary amine oxide by supplying heat at a reduced pressure, comprising the steps of providing an elongated heating surface having an input end and an output end, continuously supplying said suspension to the input end of said heating surface, mechanically spreading all of said suspension to form a coat or layer as it is supplied to said input end of said heating surface, said coat or layer having one surface in contact with the heating surface and an opposed surface which is exposed to reduced pressure, thereby enabling water to evaporate from said opposed surface, transporting said formed coat or layer of said suspension along said heating surface from said input end to said output end while simultaneously intensively mixing said suspension, and continuously discharging said homogeneous solution from the output end of said heating surface.

이 특허를 인용한 특허 (44)

Lange, Rainer; Rosato, Pietro; Wersuhn, Astrid, Absorbent personal care and/or cleansing product for cosmetic and/or dermatological applications comprising at least one absorbent sheet.
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Sealey ; II James E. ; Persinger ; Jr. W. Harvey ; Luo Mengkui ; Roscelli Vincent A. ; Neogi Amar N., Alkaline pulp having low average degree of polymerization values and method of producing the same.
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Ducharme, Jr., Paul Edmund; Nicholson, Myron Donald; Portnoy, Norman Abbye, Cellulose food casing, cellulose composition and production method therefor.
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Luo, Mengkui; Roscelli, Vincent A.; Neogi, Amar N., Cellulosic pulp having low degree of polymerization values.
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Harmut Ruf AT, Composition containing fine solid particles.
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Quigley Michael,GBX ; Armistead Roger James Rees,GBX ; Naef Rainer,CHX ; Ronchetti Andrew,GBX ; Nussberger Werner,CHX ; Ronchetti Katharine Anne,GBX, Forming solutions of cellulose in aqueous teritary amine oxide.
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Kwon,Ik Hyeon; Choi,Soo Myung; Wang,Young Soo; Kim,Sung Ryong; Choi,Jae Shik; Lee,Tae Jung; Han,Seok Jong; Kim,Myung Woo, Homogeneous cellulose solution and high tenacity lyocell multifilament using the same.
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James E. Sealey, II ; W. Harvey Persinger, Jr. ; Mengkui Luo ; Vincent A. Roscelli ; Amar N. Neogi, Lyocell fiber made from alkaline pulp having low average degree of polymerization values.
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Luo, Mengkui; Roscelli, Vincent A.; Camarena, Senen; Neogi, Amar N.; Yancey, Michael J.; Gaddis, Paul G., Lyocell fibers having high hemicellulose content.
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Mengkui Luo ; Vincent A. Roscelli ; Amar N. Neogi ; James E. Sealey, II ; Richard A. Jewell, Lyocell fibers produced from kraft pulp having low average degree of polymerization values.
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Luo Mengkui ; Roscelli Vincent A. ; Neogi Amar N. ; Sealey ; II James E. ; Jewell Richard A., Lyocell fibers, and compositions for making same.
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Mengkui Luo ; Vincent A. Roscelli ; Amar N. Neogi ; James E. Sealey, II ; Richard A. Jewell, Lyocell fibers, and compositions for making the same.
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Mengkui Luo ; Vincent A. Roscelli ; Amar N. Neogi ; James E. Sealey, II ; Richard A. Jewell, Lyocell film made from cellulose having low degree of polymerization values.
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Kwon, Ik-Hyeon; Choi, Soo-Myung; Wang, Young-Soo; Kim, Sung-Ryong; Choi, Jae-Shik; Lee, Tae-Jung; Han, Seok-Jong, Lyocell multifilament.
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Luo, Mengkui; Roscelli, Vincent A.; Camarena, Senen; Neogi, Amar N.; Selby, John S., Meltblown process with mechanical attenuation.
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Diener, Andreas; Tretzack, Oliver; Schildknecht, Helmut; Witte, Daniel, Method and device for the production of molded bodies.
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DuCharme ; Jr. Paul Edmund, Method of making a cellulose food casing including solvent recovery.
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Mulleder Eduard,ATX ; Schrempf Christoph,ATX ; Ruf Hartmut,ATX ; Feilmair Wilhelm,ATX, Method of producing cellulose fibers.
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Connor Hans-Georg,DEX ; Wachsmann Ulrich W.,DEX ; Kruger Richard A. G.,DEX, Method of producing in water-containing celluose solutions in water-containing tertiary amine N-oxides.
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Luo, Mengkui; Roscelli, Vincent A.; Neogi, Amar N.; Sealey, II, James E.; Jewell, Richard A., Molded bodies made from compositions having low degree of polymerization values.
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Daniel Mason B. ; Creekmore Erman L. ; Hedrick Jeffery A., Nonwoven needlepunch fabric and articles produced therefrom.
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Lee Wha S. (Seoul KRX) Jo Seong M. (Seoul KRX) Kang Ho J. (Seoul KRX) Kim Dong B. (Seoul KRX) Park Chong S. (Seoul KRX), Pelletized pre-dope granules of cellulose and tertiary amine oxide, spinning solution, of cellulose and process for maki.
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Sealey, II,James E.; Persinger, Jr.,W. Harvey; Luo,Mengkui; Roscelli,Vincent A.; Neogi,Amar N., Process for making a composition for conversion to lyocell fiber from an alkaline pulp having low average degree of polymerization values.
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Roelofs Wilhelmus Marie,NLX ; Spieker Antonius Hendrikus Maria,NLX ; Waringa Johannes Gerrit,NLX, Process for making fibres from poly(p-phenylene terephthalamide).
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James E. Sealey, II ; W. Harvey Persinger, Jr. ; Mengkui Luo ; Vincent A. Roscelli ; Amar N. Neogi, Process for making lyocell fibers from alkaline pulp having low average degree of polymerization values.
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Luo, Mengkui; Roscelli, Vincent A.; Neogi, Amar N.; Sealey, II, James E.; Jewell, Richard A., Process for making lyocell fibers from pulp having low average degree of polymerization values.
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Luo Mengkui ; Roscelli Vincent A. ; Camarena Senen ; Neogi Amar N. ; Yancey Michael J. ; Gaddis Paul G., Process for melt blowing continuous lyocell fibers.
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Steiner, Manuel; Diener, Andreas; Tretzack, Oliver; Zhao, Wangqian, Process for producing a product.
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Ruf Harmut,ATX ; Firgo Heinrich,ATX ; Ambrosch Siegfried,ATX ; Schlossnikl Christian,ATX ; Jurkovic Raimund,ATX, Process for producing a strengthened fiber assembly.
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Eibl Markus,ATX ; Eichinger Dieter,ATX, Process for producing cellulose fibres.
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Bhushan,Koutu Brij; Chand,Salgiya Suresh, Process for the preparation of a cellulose solution for spinning of fibres, filaments or films therefrom.
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Zikeli Stefan (Regau ATX) Ecker Friedrich (Timelkam ATX) Rauch Ernst (Schorfling ATX) Renner Klaus (Lenzing ATX) Schonberg Anton (Regau ATX), Process for the preparation of cellulose sheet.
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Zikeli Stefan (Regau ATX) Hinterholzer Peter (Schorfling ATX), Process for the preparation of cellulose solutions.
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Firgo Heinrich (Vocklabruck ATX) Eichinger Dieter (Vocklabruck ATX) Eibl Markus (Lambach ATX), Process for the production of a cellulose moulded body.
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Mulleder Eduard,ATX ; Schrempf Christoph,ATX ; Schild Gabriele,ATX, Process for the production of a cellulose moulded body.
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Firgo Heinrich (Vocklabruck ATX) Eibl Markus (Lambach ATX) Schickermuller Johann (Vocklamarkt ATX), Process for the production of cellulose fibres having a reduced tendency to fibrillation.
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Firgo Heinrich,ATX ; Eibl Markus,ATX ; Schickermuller Johann,ATX, Process for the production of cellulose fibres having a reduced tendency to fibrillation.
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Mulleder Eduard,ATX ; Mangeng Bruno,ATX ; Schwenninger Franz,ATX ; Manner Johann,ATX, Process for the purification of an aqueous solution of a tertiary amine-oxide.
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Kalt Wolfram,ATX ; Manner Johann,ATX ; Firgo Heinrich,ATX ; Schwenninger Franz,ATX, Process for transporting a solution of cellulose in an aqueous tertiary amine-oxide.
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Zikeli Stefan (Regau ATX) Ecker Friedrich (Timelkam ATX) Rauch Ernst (Schorfling ATX), Process of making cellulose fibers.
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Zikeli Stefan (Regau ATX) Ecker Friedrich (Timelkam ATX) Schwenninger Franz (Lenzing ATX) Jurkovic Raimund (Lenzing ATX) Ruf Hartmut (Vocklbruck ATX), Process of making cellulose fibres.
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Olson, David A., Reactor pump for catalyzed hydrolytic splitting of cellulose.
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Olson, David A., Reactor pump for catalyzed hydrolytic splitting of cellulose.
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Robert B. Login ; Otto Bella ; Calvin McIntosh Wicker, Jr. ; Lynn Hosie, Utility of selected amine oxides in textile technology.
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