GB933804A - Improvements in processing hydroxyethyl cellulose - Google Patents

Improvements in processing hydroxyethyl cellulose

Info

Publication number
GB933804A
GB933804A GB36242/61A GB3624261A GB933804A GB 933804 A GB933804 A GB 933804A GB 36242/61 A GB36242/61 A GB 36242/61A GB 3624261 A GB3624261 A GB 3624261A GB 933804 A GB933804 A GB 933804A
Authority
GB
United Kingdom
Prior art keywords
hydroxyethyl cellulose
crumb
surfactant
pellets
pellet
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
GB36242/61A
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.)
Rayonier Inc
Original Assignee
Rayonier Inc
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 Rayonier Inc filed Critical Rayonier Inc
Publication of GB933804A publication Critical patent/GB933804A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/26—Cellulose ethers
    • C08L1/28—Alkyl ethers
    • C08L1/284—Alkyl ethers with hydroxylated hydrocarbon radicals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B11/00—Preparation of cellulose ethers
    • C08B11/02—Alkyl or cycloalkyl ethers
    • C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
    • C08B11/08—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B11/00—Preparation of cellulose ethers
    • C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/903—Microfiber, less than 100 micron diameter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2965—Cellulosic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/298—Physical dimension

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Medicinal Preparation (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

An alkali-soluble hydroxyethyl cellulose pellet is made from fibrous hydroxyethyl cellulose crumb having from 2 to 8% of ethylene oxide substitution, the pellet having a bulk density which varies from the high range of 30 to 35 lbs. per cu. ft. when the moisture content of the crumb is 40%, to the low range of 20 to 25 lbs. per cu. ft. when the moisture content of the crumb is 58%, the pellets being free of surplus glazing and readily dispersible in water. The hydroxyethyl cellulose, suitably derived from cotton linters or wood pulp (see U.S.A. Specification 2,847,411), is preferably shredded or fluffed before extrusion in a pellet mill. Preferably, 0,05 to 0,20% by weight of a surfactant is added to the hydroxyethyl cellulose crumb before shredding or fluffing. Such a surfactant, e.g. polyethylene glycols and polyethylene-polypropylene glycols, acts p both as a fibre lubricant and dispersant, allowing easy fluffing and improved re-dispersion of the formed pellets. Addition of such a surfactant allows the bulk density of the pellet at each moisture level to be raised by 10 to 20%, without loss of dispersibility. In an example, a hydroxyethyl cellulose feed stock (4% ethylene oxide substitution), of moisture content 45% and containing 0,1% of surfactant, is shredded and extruded into pellets. The pellets are dried to 7% moisture content, and have a bulk density of 30 lbs. per cu. ft.
GB36242/61A 1960-11-07 1961-10-09 Improvements in processing hydroxyethyl cellulose Expired GB933804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67471A US3054705A (en) 1960-11-07 1960-11-07 Hydroxyethylcellulose pellets and process

Publications (1)

Publication Number Publication Date
GB933804A true GB933804A (en) 1963-08-14

Family

ID=22076213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36242/61A Expired GB933804A (en) 1960-11-07 1961-10-09 Improvements in processing hydroxyethyl cellulose

Country Status (6)

Country Link
US (1) US3054705A (en)
BE (1) BE609960A (en)
CH (1) CH417941A (en)
DE (1) DE1404986A1 (en)
ES (1) ES271296A1 (en)
GB (1) GB933804A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476844A (en) * 1965-12-20 1969-11-04 Novacel Sa Process for producing artificial sponges
US4182582A (en) * 1976-01-27 1980-01-08 A. T. Ramot Plastics Ltd. Porous tubes and hollow profile structures and method of making same
USRE32408E (en) * 1982-09-29 1987-04-28 Masonite Corporation Lignosulfonate-phenol-formaldehyde resin binder
DE102005004893B4 (en) * 2005-02-03 2011-02-10 Dow Global Technologies Inc., Midland Process for shaping cellulose ethers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2168020A (en) * 1937-02-24 1939-08-01 Du Pont Black powder manufacture
US2508112A (en) * 1946-07-12 1950-05-16 Kraft Foods Co Animal food manufacture
US2594894A (en) * 1950-05-26 1952-04-29 Plax Corp Apparatus for pelletizing
US2814618A (en) * 1955-01-03 1957-11-26 Atlantic Res Corp Spherical non-porous water-insoluble cellulose ethers
US2875473A (en) * 1955-08-10 1959-03-03 Rayonier Inc Process of forming solid particulate hydroxyethoxycellulose

Also Published As

Publication number Publication date
CH417941A (en) 1966-07-31
BE609960A (en) 1962-03-01
US3054705A (en) 1962-09-18
ES271296A1 (en) 1962-01-01
DE1404986A1 (en) 1969-07-31

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