CA1334602C - Suspension aqueuse stable de silice de precipitation - Google Patents
Suspension aqueuse stable de silice de precipitationInfo
- Publication number
- CA1334602C CA1334602C CA000590814A CA590814A CA1334602C CA 1334602 C CA1334602 C CA 1334602C CA 000590814 A CA000590814 A CA 000590814A CA 590814 A CA590814 A CA 590814A CA 1334602 C CA1334602 C CA 1334602C
- Authority
- CA
- Canada
- Prior art keywords
- silica
- suspension according
- suspension
- anhydrous
- dispersant
- 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 - Fee Related
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 42
- 238000001556 precipitation Methods 0.000 title claims abstract description 13
- 239000007900 aqueous suspension Substances 0.000 title claims abstract description 6
- 239000000725 suspension Substances 0.000 claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 14
- 125000000129 anionic group Chemical group 0.000 claims abstract description 7
- 239000012065 filter cake Substances 0.000 claims abstract description 7
- -1 aluminum compound Chemical class 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 8
- 229910052700 potassium Inorganic materials 0.000 claims description 8
- 239000011591 potassium Substances 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 239000000123 paper Substances 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 150000001991 dicarboxylic acids Chemical class 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 229920001519 homopolymer Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- 229920000388 Polyphosphate Polymers 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 239000011111 cardboard Substances 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 150000002734 metacrylic acid derivatives Chemical class 0.000 claims description 2
- 239000011087 paperboard Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000001205 polyphosphate Substances 0.000 claims description 2
- 235000011176 polyphosphates Nutrition 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims 3
- 150000007513 acids Chemical class 0.000 claims 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims 1
- 241000352333 Amegilla alpha Species 0.000 claims 1
- 150000001253 acrylic acids Chemical class 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000009472 formulation Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 235000021395 porridge Nutrition 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical compound [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 150000001990 dicarboxylic acid derivatives Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 150000002689 maleic acids Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
- C01B33/1415—Preparation of hydrosols or aqueous dispersions by suspending finely divided silica in water
- C01B33/1417—Preparation of hydrosols or aqueous dispersions by suspending finely divided silica in water an aqueous dispersion being obtained
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Silicon Compounds (AREA)
- Colloid Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8801621A FR2627176B1 (fr) | 1988-02-11 | 1988-02-11 | Suspension aqueuse stable de silice de precipitation |
| FR88/01621 | 1988-02-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1334602C true CA1334602C (fr) | 1995-02-28 |
Family
ID=9363176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000590814A Expired - Fee Related CA1334602C (fr) | 1988-02-11 | 1989-02-10 | Suspension aqueuse stable de silice de precipitation |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US5418273A (cg-RX-API-DMAC7.html) |
| EP (1) | EP0329509B1 (cg-RX-API-DMAC7.html) |
| JP (1) | JPH029708A (cg-RX-API-DMAC7.html) |
| KR (1) | KR910009575B1 (cg-RX-API-DMAC7.html) |
| AR (1) | AR246728A1 (cg-RX-API-DMAC7.html) |
| AT (1) | ATE91272T1 (cg-RX-API-DMAC7.html) |
| AU (1) | AU626287B2 (cg-RX-API-DMAC7.html) |
| BR (1) | BR8900722A (cg-RX-API-DMAC7.html) |
| CA (1) | CA1334602C (cg-RX-API-DMAC7.html) |
| DE (1) | DE68907419T2 (cg-RX-API-DMAC7.html) |
| DK (1) | DK172922B1 (cg-RX-API-DMAC7.html) |
| ES (1) | ES2057156T3 (cg-RX-API-DMAC7.html) |
| FR (1) | FR2627176B1 (cg-RX-API-DMAC7.html) |
| IE (1) | IE63288B1 (cg-RX-API-DMAC7.html) |
| PT (1) | PT89682B (cg-RX-API-DMAC7.html) |
| ZA (1) | ZA891057B (cg-RX-API-DMAC7.html) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1241040B (it) * | 1989-12-18 | 1993-12-29 | Ausidet Srl | Sospensioni acquose stabili di materiali inorganici a base di silice insolubili in acqua |
| US6169135B1 (en) | 1993-09-29 | 2001-01-02 | Rhone Poulenc Chimie | Precipitated silica |
| US6001322A (en) * | 1993-09-29 | 1999-12-14 | Rhone-Poulenc Chimie | Precipitated silicas |
| FR2710630B1 (fr) * | 1993-09-29 | 1995-12-29 | Rhone Poulenc Chimie | Nouvelles silices précipitées, leur procédé de préparation et leur utilisation au renforcement des élastomères. |
| WO1995009127A1 (fr) | 1993-09-29 | 1995-04-06 | Rhone-Poulenc Chimie | Silice precipitee |
| FR2722185B1 (fr) * | 1994-07-07 | 1996-09-27 | Rhone Poulenc Chimie | Suspension concentree de silice de precipitation, procedes pour sa preparation et utilisations de cette suspension |
| FR2732327B1 (fr) * | 1995-04-03 | 1997-05-09 | Rhone Poulenc Chimie | Suspension aqueuse de silice et de sulfate d'aluminium ou d'alun, procedes de preparation et utilisations de ladite suspension |
| FR2732260B1 (fr) * | 1995-04-03 | 1997-05-09 | Rhone Poulenc Chimie | Procede de projection de beton ou de mortier |
| FR2766849B1 (fr) * | 1997-08-01 | 1999-12-24 | Rhodia Chimie Sa | Procede de fabrication de papier utilisant un nouveau systeme de retention comprenant une silice precipitee et un polymere cationique |
| US6083997A (en) | 1998-07-28 | 2000-07-04 | Nalco Chemical Company | Preparation of anionic nanocomposites and their use as retention and drainage aids in papermaking |
| US6299795B1 (en) | 2000-01-18 | 2001-10-09 | Praxair S.T. Technology, Inc. | Polishing slurry |
| WO2003067684A2 (en) * | 2002-02-07 | 2003-08-14 | Kvg Technologies, Inc. | Lead acid battery with gelled electrolyte formed by filtration action of absorbent separators, electrolyte therefor, and absorbent separators therefor |
| US6861112B2 (en) * | 2002-11-15 | 2005-03-01 | Cabot Corporation | Dispersion, coating composition, and recording medium containing silica mixture |
| CN101495409B (zh) * | 2006-07-31 | 2011-07-27 | 扶桑化学工业股份有限公司 | 硅溶胶及其制造方法 |
| DE102006044520A1 (de) * | 2006-09-21 | 2008-04-03 | H.C. Starck Gmbh | Verfahren zur Herstellung feststoffreicher Kieselsole |
| DE102010001135A1 (de) * | 2010-01-22 | 2011-07-28 | Evonik Degussa GmbH, 45128 | Stabile wässrige Dispersionen aus gefällter Kieselsäure |
| FR2994963B1 (fr) * | 2012-08-31 | 2014-10-03 | Rhodia Operations | Nouveau procede de preparation de silices precipitees, nouvelles silices precipitees et leurs utilisations, notamment pour le renforcement de polymeres |
| FR2994962B1 (fr) | 2012-08-31 | 2014-12-26 | Rhodia Operations | Nouveau procede de preparation de silices precitees, nouvelles silices precipitees et leurs utilisations, notamment pour le renforcement de polymeres |
| FR2994961B1 (fr) * | 2012-08-31 | 2014-10-03 | Rhodia Operations | Nouveau procede de preparation de silices precipitee, nouvelles silices precipitees et leur utilisations, notamment pour le renforcement de polymeres |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3284380A (en) * | 1961-07-14 | 1966-11-08 | Hercules Inc | Polar polymer modified-ethylene-propylene copolymer latices |
| US3291626A (en) * | 1962-12-26 | 1966-12-13 | Huber Corp J M | Stabilized pigment slurries |
| US3953421A (en) * | 1970-07-30 | 1976-04-27 | Cabot Corporation | Paper coating compositions and organic pigments used therein |
| DE2721053C2 (de) * | 1977-05-11 | 1981-10-08 | Degussa Ag, 6000 Frankfurt | Verfahren zur Herstellung einer stabilen Dispersion einer gefällten Kieselsäure in Wasser |
| US4416941A (en) * | 1982-07-30 | 1983-11-22 | E. I. Du Pont De Nemours & Co. | Additive for coating compositions of silica and a fluorinated ethylene oxide polymer |
| FR2536380B1 (fr) * | 1982-11-24 | 1985-12-13 | Rhone Poulenc Chim Base | Procede pour ameliorer les proprietes rheologiques d'une suspension de silice precipitee |
| JPS60146097A (ja) * | 1983-12-29 | 1985-08-01 | 神崎製紙株式会社 | キヤスト塗被紙の製造方法 |
| JPS61141613A (ja) * | 1984-12-12 | 1986-06-28 | Kao Corp | 貯蔵安定性の良好な微粒子シリカスラリ−及びその製造方法 |
| JPH0641222B2 (ja) * | 1988-04-07 | 1994-06-01 | 株式会社巴川製紙所 | 印刷用シート |
-
1988
- 1988-02-11 FR FR8801621A patent/FR2627176B1/fr not_active Expired - Lifetime
-
1989
- 1989-02-01 EP EP89400275A patent/EP0329509B1/fr not_active Expired - Lifetime
- 1989-02-01 DE DE89400275T patent/DE68907419T2/de not_active Expired - Fee Related
- 1989-02-01 ES ES89400275T patent/ES2057156T3/es not_active Expired - Lifetime
- 1989-02-01 AT AT89400275T patent/ATE91272T1/de not_active IP Right Cessation
- 1989-02-09 AU AU29815/89A patent/AU626287B2/en not_active Ceased
- 1989-02-10 DK DK198900615A patent/DK172922B1/da not_active IP Right Cessation
- 1989-02-10 JP JP1030104A patent/JPH029708A/ja active Granted
- 1989-02-10 CA CA000590814A patent/CA1334602C/fr not_active Expired - Fee Related
- 1989-02-10 PT PT89682A patent/PT89682B/pt not_active IP Right Cessation
- 1989-02-10 AR AR89313194A patent/AR246728A1/es active
- 1989-02-10 IE IE42989A patent/IE63288B1/en not_active IP Right Cessation
- 1989-02-10 ZA ZA891057A patent/ZA891057B/xx unknown
- 1989-02-11 KR KR1019890001580A patent/KR910009575B1/ko not_active Expired
- 1989-02-13 BR BR898900722A patent/BR8900722A/pt not_active IP Right Cessation
-
1993
- 1993-01-07 US US08/001,399 patent/US5418273A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AU2981589A (en) | 1989-08-17 |
| PT89682A (pt) | 1989-10-04 |
| JPH0565446B2 (cg-RX-API-DMAC7.html) | 1993-09-17 |
| JPH029708A (ja) | 1990-01-12 |
| DK61589A (da) | 1989-08-12 |
| AR246728A1 (es) | 1994-09-30 |
| DE68907419T2 (de) | 1993-10-14 |
| KR890012888A (ko) | 1989-09-19 |
| FR2627176A1 (fr) | 1989-08-18 |
| IE890429L (en) | 1989-08-11 |
| DE68907419D1 (de) | 1993-08-12 |
| PT89682B (pt) | 1994-03-31 |
| FR2627176B1 (fr) | 1990-06-15 |
| BR8900722A (pt) | 1989-10-17 |
| EP0329509B1 (fr) | 1993-07-07 |
| EP0329509A1 (fr) | 1989-08-23 |
| ATE91272T1 (de) | 1993-07-15 |
| KR910009575B1 (ko) | 1991-11-21 |
| AU626287B2 (en) | 1992-07-30 |
| ES2057156T3 (es) | 1994-10-16 |
| DK61589D0 (da) | 1989-02-10 |
| DK172922B1 (da) | 1999-10-04 |
| US5418273A (en) | 1995-05-23 |
| ZA891057B (en) | 1990-02-28 |
| IE63288B1 (en) | 1995-04-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |