JPS6436623A - Lignin derivative and its utilization - Google Patents

Lignin derivative and its utilization

Info

Publication number
JPS6436623A
JPS6436623A JP63174859A JP17485988A JPS6436623A JP S6436623 A JPS6436623 A JP S6436623A JP 63174859 A JP63174859 A JP 63174859A JP 17485988 A JP17485988 A JP 17485988A JP S6436623 A JPS6436623 A JP S6436623A
Authority
JP
Japan
Prior art keywords
utilization
lignin derivative
lignin
derivative
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.)
Pending
Application number
JP63174859A
Other languages
English (en)
Japanese (ja)
Inventor
Shiringu Piitaa
Ii Buraun Pateii
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.)
Westvaco Corp
Original Assignee
Westvaco Corp
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 Westvaco Corp filed Critical Westvaco Corp
Publication of JPS6436623A publication Critical patent/JPS6436623A/ja
Pending 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
    • C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
    • C04B24/121—Amines, polyamines
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
    • C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
    • C09K8/487—Fluid loss control additives; Additives for reducing or preventing circulation loss
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/84—Compositions based on water or polar solvents
    • C09K8/86—Compositions based on water or polar solvents containing organic compounds
    • C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/14—Nitrogen-containing compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/23—Lignins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/17—Ketenes, e.g. ketene dimers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Paper (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
JP63174859A 1987-07-23 1988-07-13 Lignin derivative and its utilization Pending JPS6436623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/076,948 US4775744A (en) 1987-07-23 1987-07-23 Cationic and anionic lignin amines

Publications (1)

Publication Number Publication Date
JPS6436623A true JPS6436623A (en) 1989-02-07

Family

ID=22135160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63174859A Pending JPS6436623A (en) 1987-07-23 1988-07-13 Lignin derivative and its utilization

Country Status (8)

Country Link
US (1) US4775744A (enExample)
JP (1) JPS6436623A (enExample)
CA (1) CA1298831C (enExample)
DE (1) DE3824112A1 (enExample)
FI (1) FI89367C (enExample)
GB (1) GB2208384B (enExample)
NO (1) NO169013C (enExample)
SE (1) SE503057C2 (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883878A (ja) * 1981-11-14 1983-05-19 Daikin Ind Ltd 非粘着導電性弾性体ロ−ル
WO2013031039A1 (ja) * 2011-09-02 2013-03-07 ハリマ化成株式会社 変性リグニンおよびそれを含有するフェノール樹脂成形材料
JP2016108183A (ja) * 2014-12-05 2016-06-20 株式会社日本触媒 セメント混和剤
JP2016121321A (ja) * 2014-12-25 2016-07-07 株式会社日本触媒 リグニン誘導体
JP2016196540A (ja) * 2015-04-02 2016-11-24 株式会社日本触媒 リグニン誘導体の製造方法

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5012870A (en) * 1989-02-21 1991-05-07 Westvaco Corporation Aminated sulfonated or sulformethylated lignins as cement fluid loss control additives
US4990191A (en) * 1989-02-21 1991-02-05 Westvaco Corporation Aminated sulfonated or sulfomethylated lignins as cement fluid loss control additives
US5183575A (en) * 1991-08-29 1993-02-02 Betz Laboratories, Inc. Methods for the flocculation of coal fines and insoluble metals in coal mine waters
DE4136289A1 (de) * 1991-11-04 1993-05-06 Bayer Ag, 5090 Leverkusen, De Verfahren zur herstellung von polykondensaten
US5256304A (en) * 1992-06-05 1993-10-26 Betz Laboratories, Inc. Methods of removing oil and metal ions from oily wastewater
CN1045450C (zh) * 1996-07-12 1999-10-06 清华大学 木质素季铵盐阳离子絮凝剂合成工艺
US5698108A (en) * 1996-11-13 1997-12-16 Vinings Industries, Inc. Formaldehyde-reduction composition and methods of use therefor
US6077888A (en) * 1997-04-11 2000-06-20 Westvaco Corporation High viscosity cationic slow-set and medium-set emulsions
US5777086A (en) * 1997-05-12 1998-07-07 Thermo Fibergen, Inc. Method of recovering lignin from pulp and paper sludge
DE19729268C2 (de) * 1997-07-09 2000-07-06 Aventis Res & Tech Gmbh & Co Thermoplastische Mischung auf Basis von Polysacchariden zur Herstellung von biologisch abbaubaren Formkörpern mit verbesserten Eigenschaften, Herstellung der Mischung sowie Verwendung
US6238475B1 (en) * 1999-04-21 2001-05-29 Lignotech Usa, Inc. Ammoxidized lignosulfonate cement dispersant
DE10017012A1 (de) * 2000-03-16 2001-09-27 Bioconsult Ges Fuer Biotechnol Schwefelfreies Lignin und dessen Derivate zur Herabsetzung der Bildung von Schleim und Ablagerungen in industriellen Anlagen
US20030136534A1 (en) * 2001-12-21 2003-07-24 Hans Johansson-Vestin Aqueous silica-containing composition
US7278487B1 (en) 2006-06-19 2007-10-09 Halliburton Energy Services, Inc. Methods of using chemical wash compositions for removing drilling fluids
US7662752B2 (en) * 2006-06-19 2010-02-16 Halliburton Energy Services, Inc. Chemical wash compositions for removing drilling fluids
US8383572B2 (en) * 2008-09-19 2013-02-26 The Procter & Gamble Company Detergent composition containing suds boosting and suds stabilizing modified biopolymer
CN102159624A (zh) * 2008-09-19 2011-08-17 宝洁公司 可用于清洁组合物中的改性的木质素生物聚合物
US8383573B2 (en) * 2008-09-19 2013-02-26 The Procter & Gamble Company Dual character biopolymer useful in cleaning products
BRPI0918535A2 (pt) * 2008-09-19 2015-12-08 Procter & Gamble polímero de caráter dual útil em produtos para tratamento de tecidos.
CN101560002B (zh) * 2009-06-02 2011-04-27 福州大学 一种污水处理剂及其制备方法
US8497359B2 (en) * 2010-02-26 2013-07-30 Ppg Industries Ohio, Inc. Cationic electrodepositable coating composition comprising lignin
US9181405B2 (en) 2012-01-13 2015-11-10 General Electric Company Formaldehyde-free lignin-amine coagulants
CN102827341B (zh) * 2012-08-29 2014-04-02 中科院广州化学有限公司 一种木素胺改性水性聚氨酯材料及其制备方法与应用
FI20135527L (fi) * 2013-05-17 2014-11-18 Upm Kymmene Corp Menetelmä kovetteen valmistamiseksi
CN108138440B (zh) 2015-07-07 2023-07-07 索理思科技公司 用于抑制有机污染物沉积在纸浆和造纸系统中的方法
FI128252B (en) 2015-11-04 2020-01-31 Kemira Oyj Process for optimizing material recycling in chemical pulping
CN106701045B (zh) * 2016-12-06 2020-08-07 江苏苏博特新材料股份有限公司 一种高效封堵型钻井液防塌剂、生产方法及其使用方法
CN107522299B (zh) * 2017-09-30 2018-05-29 张忠诚 一种多功能生物制药水处理剂及制作方法
CN108532362A (zh) * 2018-05-09 2018-09-14 上海昶法新材料有限公司 一种木质素施胶剂及其制备方法
CN108642959A (zh) * 2018-05-09 2018-10-12 上海昶法新材料有限公司 一种木质素表面施胶剂及其制备方法
DE102018127267A1 (de) * 2018-10-31 2020-04-30 Technische Universität Darmstadt Aminiertes Lignin und Verfahren zu dessen Herstellung
CN109928447A (zh) * 2019-04-26 2019-06-25 汇科琪(天津)水质添加剂有限公司 一种锅炉给水用高效脱氧剂及其制备方法与应用
CN111333859A (zh) * 2020-02-17 2020-06-26 南京工业大学 一种胺化木质素及其制备方法与应用
CN111576086B (zh) * 2020-04-29 2022-06-10 上海昶法新材料有限公司 一种表面施胶剂、原料组合物及其制备方法和应用
CN114133922B (zh) * 2020-09-04 2023-03-14 中国石油化工股份有限公司 一种水溶性洗油剂及其制备方法和应用
CN113337084B (zh) * 2021-04-20 2022-11-15 宁波坚锋新材料有限公司 一种高效屏蔽紫外的生物降解薄膜材料及其制备方法
CN116693784A (zh) * 2022-02-24 2023-09-05 中石化石油工程技术服务有限公司 一种超高温生物质合成树脂降滤失剂的制备方法和应用

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709696A (en) * 1950-06-23 1955-05-31 Du Pont Reaction of unsulfonated lignin, formaldehyde and secondary amines and product
US2863780A (en) * 1957-03-04 1958-12-09 West Virginia Pulp & Paper Co Inhibition of corrosion of iron in acids
US3407188A (en) * 1965-09-01 1968-10-22 West Virginia Pulp & Paper Co Quaternary ammonium salts of lignin
US3470148A (en) * 1966-12-16 1969-09-30 Weyerhaeuser Co Reaction products of lignin and bark extracts and process for same
US3857830A (en) * 1972-11-13 1974-12-31 Georgia Pacific Corp Process for preparation of lignin epoxide compositions and composition thereof
US3935101A (en) * 1972-11-13 1976-01-27 Georgia-Pacific Corporation Clarification process
US3912706A (en) * 1972-11-13 1975-10-14 Georgia Pacific Corp Lignin composition and process for its preparation
CA1018519A (en) * 1973-12-13 1977-10-04 Allan B. Mckague Quaternary ammonium flocculating agent derived from kraft lignin
US4455257A (en) * 1982-10-12 1984-06-19 Reed Lignin, Inc. Cationic reaction product of kraft lignin with aldehyde and polyamine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883878A (ja) * 1981-11-14 1983-05-19 Daikin Ind Ltd 非粘着導電性弾性体ロ−ル
WO2013031039A1 (ja) * 2011-09-02 2013-03-07 ハリマ化成株式会社 変性リグニンおよびそれを含有するフェノール樹脂成形材料
JP2016108183A (ja) * 2014-12-05 2016-06-20 株式会社日本触媒 セメント混和剤
JP2016121321A (ja) * 2014-12-25 2016-07-07 株式会社日本触媒 リグニン誘導体
JP2016196540A (ja) * 2015-04-02 2016-11-24 株式会社日本触媒 リグニン誘導体の製造方法

Also Published As

Publication number Publication date
FI89367B (fi) 1993-06-15
CA1298831C (en) 1992-04-14
US4775744A (en) 1988-10-04
GB8815267D0 (en) 1988-08-03
SE8802212L (sv) 1989-01-24
FI882840A0 (fi) 1988-06-14
NO882625L (no) 1989-01-24
SE503057C2 (sv) 1996-03-18
GB2208384B (en) 1991-05-29
FI882840L (fi) 1989-01-24
NO882625D0 (no) 1988-06-15
NO169013B (no) 1992-01-20
GB2208384A (en) 1989-03-30
DE3824112A1 (de) 1989-02-02
FI89367C (fi) 1993-09-27
DE3824112C2 (enExample) 1990-07-26
NO169013C (no) 1992-04-29
SE8802212D0 (sv) 1988-06-14

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