GB992740A - Process for the preparation of porous filamentary cellulose acetate - Google Patents

Process for the preparation of porous filamentary cellulose acetate

Info

Publication number
GB992740A
GB992740A GB1974960A GB1974960A GB992740A GB 992740 A GB992740 A GB 992740A GB 1974960 A GB1974960 A GB 1974960A GB 1974960 A GB1974960 A GB 1974960A GB 992740 A GB992740 A GB 992740A
Authority
GB
United Kingdom
Prior art keywords
precipitant
mixture
cellulose acetate
stream
proportion
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1974960A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VITOLD TITOW
Original Assignee
VITOLD TITOW
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 VITOLD TITOW filed Critical VITOLD TITOW
Priority to GB1974960A priority Critical patent/GB992740A/en
Priority to DE19611469153 priority patent/DE1469153A1/en
Priority to CH649961A priority patent/CH410271A/en
Publication of GB992740A publication Critical patent/GB992740A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B3/00—Preparation of cellulose esters of organic acids
    • C08B3/22—Post-esterification treatments, including purification
    • C08B3/26—Isolation of the cellulose ester
    • C08B3/28—Isolation of the cellulose ester by precipitation
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
    • D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Textile Engineering (AREA)
  • Organic Chemistry (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Artificial Filaments (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

Porous filamentary cellulose acetate having a micro-rugose surface is made by diluting a solution of cellulose acetate with a proportion of a liquid precipitant miscible with the solution which proportion is only just insufficient to precipitate the cellulose acetate and introducing the resultant mixture in the form of a thin stream or multiplicity of streams into a stream or moving body of the same or another liquid precipitant or on to the surface of such a moving body of precipitant. The cellulose acetate solution may be obtained from a cellulose acetylation process. The precipitant may be water. The mixture and/or the precipitant may contain a precipitant-soluble surface-active agent. A stream of the mixture may be deposited against a weir over which a stream of the precipitant is flowing at a rate exceeding the rate of flow of the stream of mixture. The mixture may be deposited on to the surface of a rotating drum or moving band which surface is continually covered with a layer or a film of precipitant. The mixture may be deposited from one or more supply means adapted to reciprocate transversely or diagonally across the width of the surface of the drum or band. The combined motions of the drum or band and the supply means may cause a mat of criss-cross filaments to form, a proportion of the filaments being lightly bonded together at points of intersection.
GB1974960A 1960-06-03 1960-06-03 Process for the preparation of porous filamentary cellulose acetate Expired GB992740A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1974960A GB992740A (en) 1960-06-03 1960-06-03 Process for the preparation of porous filamentary cellulose acetate
DE19611469153 DE1469153A1 (en) 1960-06-03 1961-05-31 Process for the production of cellulose acetate
CH649961A CH410271A (en) 1960-06-03 1961-06-03 Process for the production of fibrous cellulose acetate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1974960A GB992740A (en) 1960-06-03 1960-06-03 Process for the preparation of porous filamentary cellulose acetate

Publications (1)

Publication Number Publication Date
GB992740A true GB992740A (en) 1965-05-19

Family

ID=10134563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1974960A Expired GB992740A (en) 1960-06-03 1960-06-03 Process for the preparation of porous filamentary cellulose acetate

Country Status (3)

Country Link
CH (1) CH410271A (en)
DE (1) DE1469153A1 (en)
GB (1) GB992740A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4283186A (en) 1976-10-06 1981-08-11 Celanese Corporation Method of forming cigarette filter material
EP0711512A3 (en) * 1994-10-21 1997-06-18 Daicel Chem Tobacco smoke filter materials, fibrous cellulose esters, and production processes
WO1997022739A1 (en) * 1995-12-15 1997-06-26 Eastman Chemical Company Laminar flow process of preparing cellulose diacetate fibers
US6184373B1 (en) 1999-09-03 2001-02-06 Eastman Chemical Company Method for preparing cellulose acetate fibers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2719019A1 (en) * 1977-04-28 1978-11-02 Bayer Ag HYDROPHILIC FAEDS AND FIBERS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4283186A (en) 1976-10-06 1981-08-11 Celanese Corporation Method of forming cigarette filter material
EP0711512A3 (en) * 1994-10-21 1997-06-18 Daicel Chem Tobacco smoke filter materials, fibrous cellulose esters, and production processes
US5863652A (en) * 1994-10-21 1999-01-26 Daicel Chemical Industries Ltd. Tobacco smoke filter materials, fibrous cellulose esters, and production processes
WO1997022739A1 (en) * 1995-12-15 1997-06-26 Eastman Chemical Company Laminar flow process of preparing cellulose diacetate fibers
US5705631A (en) * 1995-12-15 1998-01-06 Eastman Chemical Company Laminar flow process of preparing cellulose diacetate fibers
US6184373B1 (en) 1999-09-03 2001-02-06 Eastman Chemical Company Method for preparing cellulose acetate fibers

Also Published As

Publication number Publication date
DE1469153A1 (en) 1968-11-28
CH410271A (en) 1966-03-31

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