NO169013C - Kationiske og anioniske ligninaminer samt anvendelse derav til utfelling av overflateaktive materialer fra avloepsvann - Google Patents
Kationiske og anioniske ligninaminer samt anvendelse derav til utfelling av overflateaktive materialer fra avloepsvannInfo
- Publication number
- NO169013C NO169013C NO882625A NO882625A NO169013C NO 169013 C NO169013 C NO 169013C NO 882625 A NO882625 A NO 882625A NO 882625 A NO882625 A NO 882625A NO 169013 C NO169013 C NO 169013C
- Authority
- NO
- Norway
- Prior art keywords
- cationic
- precipitation
- waste water
- active waste
- water effluents
- Prior art date
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)
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 (4)
Publication Number | Publication Date |
---|---|
NO882625D0 NO882625D0 (no) | 1988-06-15 |
NO882625L NO882625L (no) | 1989-01-24 |
NO169013B NO169013B (no) | 1992-01-20 |
NO169013C true NO169013C (no) | 1992-04-29 |
Family
ID=22135160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO882625A NO169013C (no) | 1987-07-23 | 1988-06-15 | Kationiske og anioniske ligninaminer samt anvendelse derav til utfelling av overflateaktive materialer fra avloepsvann |
Country Status (8)
Country | Link |
---|---|
US (1) | US4775744A (sv) |
JP (1) | JPS6436623A (sv) |
CA (1) | CA1298831C (sv) |
DE (1) | DE3824112A1 (sv) |
FI (1) | FI89367C (sv) |
GB (1) | GB2208384B (sv) |
NO (1) | NO169013C (sv) |
SE (1) | SE503057C2 (sv) |
Families Citing this family (41)
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 |
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 |
CA2733242A1 (en) * | 2008-09-19 | 2010-03-25 | The Procter & Gamble Company | Dual character polymer useful in fabric care products |
EP2324104B1 (en) * | 2008-09-19 | 2016-10-26 | The Procter and Gamble Company | Dual character biopolymer useful in cleaning products |
MX2011003032A (es) * | 2008-09-19 | 2011-04-12 | Procter & Gamble | Biopolimero de lignina modificada util en composiciones de limpieza. |
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 |
JP5671430B2 (ja) * | 2011-09-02 | 2015-02-18 | 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 |
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 (sv) * | 2013-05-17 | 2014-11-18 | Upm Kymmene Corp | Förfarande för framställning av härdare |
JP6461581B2 (ja) * | 2014-12-05 | 2019-01-30 | 株式会社日本触媒 | セメント混和剤 |
JP6588222B2 (ja) * | 2014-12-25 | 2019-10-09 | 株式会社日本触媒 | リグニン誘導体 |
JP6545993B2 (ja) * | 2015-04-02 | 2019-07-17 | 株式会社日本触媒 | リグニン誘導体の製造方法 |
PT3320140T (pt) | 2015-07-07 | 2022-03-22 | Solenis Tech Lp | Métodos para inibir a deposição de contaminantes orgânicos nos sistemas de produção de polpa e papel |
FI128252B (sv) | 2015-11-04 | 2020-01-31 | Kemira Oyj | Förfarande för optimering av materialåtervinning i kemisk massatillverkning |
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 |
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 |
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 |
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 |
Family Cites Families (9)
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 |
US3935101A (en) * | 1972-11-13 | 1976-01-27 | Georgia-Pacific Corporation | Clarification process |
US3857830A (en) * | 1972-11-13 | 1974-12-31 | Georgia Pacific Corp | Process for preparation of lignin epoxide compositions and composition thereof |
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 |
-
1987
- 1987-07-23 US US07/076,948 patent/US4775744A/en not_active Expired - Lifetime
-
1988
- 1988-06-14 FI FI882840A patent/FI89367C/sv not_active IP Right Cessation
- 1988-06-14 SE SE8802212A patent/SE503057C2/sv not_active IP Right Cessation
- 1988-06-15 NO NO882625A patent/NO169013C/no unknown
- 1988-06-17 CA CA000569746A patent/CA1298831C/en not_active Expired - Fee Related
- 1988-06-27 GB GB8815267A patent/GB2208384B/en not_active Expired - Fee Related
- 1988-07-13 JP JP63174859A patent/JPS6436623A/ja active Pending
- 1988-07-15 DE DE3824112A patent/DE3824112A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
SE503057C2 (sv) | 1996-03-18 |
JPS6436623A (en) | 1989-02-07 |
GB8815267D0 (en) | 1988-08-03 |
DE3824112A1 (de) | 1989-02-02 |
FI89367C (sv) | 1993-09-27 |
US4775744A (en) | 1988-10-04 |
SE8802212L (sv) | 1989-01-24 |
NO169013B (no) | 1992-01-20 |
NO882625L (no) | 1989-01-24 |
FI882840A0 (fi) | 1988-06-14 |
GB2208384A (en) | 1989-03-30 |
DE3824112C2 (sv) | 1990-07-26 |
GB2208384B (en) | 1991-05-29 |
SE8802212D0 (sv) | 1988-06-14 |
FI89367B (fi) | 1993-06-15 |
NO882625D0 (no) | 1988-06-15 |
FI882840A (fi) | 1989-01-24 |
CA1298831C (en) | 1992-04-14 |
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