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WO2002092669A8 - A method for preparation of absorbing substances - Google Patents

A method for preparation of absorbing substances

Info

Publication number
WO2002092669A8
WO2002092669A8 PCT/FI2002/000415 FI0200415W WO02092669A8 WO 2002092669 A8 WO2002092669 A8 WO 2002092669A8 FI 0200415 W FI0200415 W FI 0200415W WO 02092669 A8 WO02092669 A8 WO 02092669A8
Authority
WO
WIPO (PCT)
Prior art keywords
monomer
polymerization
initiation
forming
removal
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.)
Ceased
Application number
PCT/FI2002/000415
Other languages
French (fr)
Other versions
WO2002092669A1 (en
Inventor
Yrjoe Maelkki
Merja Marjut Toikka
Antti Jussi Sipilae
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.)
Suomen Viljava Oy
Original Assignee
Suomen Viljava Oy
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 Suomen Viljava Oy filed Critical Suomen Viljava Oy
Priority to US10/477,809 priority Critical patent/US20040231059A1/en
Priority to EP02722325A priority patent/EP1397419A1/en
Priority to CA002447520A priority patent/CA2447520A1/en
Publication of WO2002092669A1 publication Critical patent/WO2002092669A1/en
Publication of WO2002092669A8 publication Critical patent/WO2002092669A8/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H8/00—Macromolecular compounds derived from lignocellulosic materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
    • C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Graft Or Block Polymers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerisation Methods In General (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The invention relates to a method for preparing absorptive substances from lignocellulosic materials, such as straw of cereal plants, peels or hulls of cereal grains, plant leaves, bagasse, jute or wood chips. The method according to the invention comprises as its essential stages an alkaline pretreatment for partial removal of lignin and hemicellulose, an initiation treatment for forming reactive radicals, addition of at least one monomer and cross-linking agent, and finally a polymerization. As a preceding treatment, washing with water for removal of extraneous matter and/or disturbing components can be included, and potentially a wet milling or another defibration for increasing the reactive surface. For initiation, an oxidative chemical such as hydrogen peroxide is suitable, for the monomer especially compounds containing a vinyl group, such as acrylic acid. For obtaining or improving ion exchange properties, an ionizable atomic group can be included either as a part of a monomer, or forming it after the polymerization.
PCT/FI2002/000415 2001-05-16 2002-05-15 A method for preparation of absorbing substances Ceased WO2002092669A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/477,809 US20040231059A1 (en) 2001-05-16 2002-05-15 Method for preparation of absorbing substances
EP02722325A EP1397419A1 (en) 2001-05-16 2002-05-15 A method for preparation of absorbing substances
CA002447520A CA2447520A1 (en) 2001-05-16 2002-05-15 A method for preparation of absorbing substances

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20011034 2001-05-16
FI20011034A FI113375B (en) 2001-05-16 2001-05-16 A method for making absorbent materials from a lignocellulosic material

Publications (2)

Publication Number Publication Date
WO2002092669A1 WO2002092669A1 (en) 2002-11-21
WO2002092669A8 true WO2002092669A8 (en) 2003-07-24

Family

ID=8561214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2002/000415 Ceased WO2002092669A1 (en) 2001-05-16 2002-05-15 A method for preparation of absorbing substances

Country Status (5)

Country Link
US (1) US20040231059A1 (en)
EP (1) EP1397419A1 (en)
CA (1) CA2447520A1 (en)
FI (1) FI113375B (en)
WO (1) WO2002092669A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122815B (en) 2005-04-18 2012-07-13 Cerefi Oy Method for fractionating lignocellulosic materials and parts obtained from them
FI20096198A0 (en) * 2009-11-18 2009-11-18 Valtion Teknillinen Oxidized lignin-containing material, its use and process for the purification of contaminated liquids
JP6063416B2 (en) * 2014-06-10 2017-01-18 デクセリアルズ株式会社 Water purification agent and water purification method
CN110603094B (en) * 2017-03-29 2022-10-28 拉普兰塔拉赫蒂理工大学 Extracted lignocellulosic material as adsorbent and its use
WO2018236293A1 (en) * 2017-06-20 2018-12-27 Mitr Phol Sugarcane Research Center Co., Ltd. ABSORBENT CELLULOSIC MATERIAL
CN109731435B (en) * 2019-01-17 2021-10-29 江苏省农业科学院 Application of a cellulose-based formaldehyde adsorbent in adsorbing formaldehyde
CN119019753B (en) * 2024-10-25 2025-05-30 宁波尼可海绵科技有限公司 Sponge product and preparation method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028290A (en) * 1975-10-23 1977-06-07 Hercules Incorporated Highly absorbent modified polysaccharides
US4036588A (en) * 1976-03-09 1977-07-19 Research Corporation Method of increasing the water absorption of cellulose-containing materials
US4806475A (en) * 1983-12-28 1989-02-21 The United States Of America As Represented By The Secretary Of Agriculture Alkaline peroxide treatment of agricultural byproducts
FR2574826B1 (en) * 1984-12-14 1987-01-09 Du Pin Cellulose PROCESS FOR THE PREPARATION OF MODIFIED CELLULOSE PROVIDING IMPROVED ABSORBENT PROPERTIES
US4818598A (en) * 1985-06-28 1989-04-04 The Procter & Gamble Company Absorbent structures
FR2628764B1 (en) * 1988-03-16 1990-10-12 Du Pin Cellulose PROCESS FOR PRODUCING MODIFIED CELLULOSE FIBROUS PRODUCTS HAVING IMPROVED ABSORBENT PROPERTIES AND PRODUCTS OBTAINED
US4842877A (en) * 1988-04-05 1989-06-27 Xylan, Inc. Delignification of non-woody biomass

Also Published As

Publication number Publication date
FI113375B (en) 2004-04-15
CA2447520A1 (en) 2002-11-21
US20040231059A1 (en) 2004-11-25
FI20011034L (en) 2002-11-17
WO2002092669A1 (en) 2002-11-21
FI20011034A0 (en) 2001-05-16
EP1397419A1 (en) 2004-03-17

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