ATE40669T1 - Kieselsaeure mit hoher oelaufnahme und gesteuerter primaerer struktur sowie verfahren zu deren herstellung. - Google Patents
Kieselsaeure mit hoher oelaufnahme und gesteuerter primaerer struktur sowie verfahren zu deren herstellung.Info
- Publication number
- ATE40669T1 ATE40669T1 AT85401379T AT85401379T ATE40669T1 AT E40669 T1 ATE40669 T1 AT E40669T1 AT 85401379 T AT85401379 T AT 85401379T AT 85401379 T AT85401379 T AT 85401379T AT E40669 T1 ATE40669 T1 AT E40669T1
- Authority
- AT
- Austria
- Prior art keywords
- silica
- production
- oil absorption
- primary structure
- high oil
- Prior art date
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract 8
- 239000000377 silicon dioxide Substances 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 238000010521 absorption reaction Methods 0.000 title 1
- 238000001556 precipitation Methods 0.000 abstract 3
- 239000000084 colloidal system Substances 0.000 abstract 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 239000002535 acidifier Substances 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 239000012429 reaction media Substances 0.000 abstract 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- 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
- C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/11—Powder tap density
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/14—Pore volume
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/90—Other properties not specified above
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Silicon Compounds (AREA)
- Lubricants (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Fats And Perfumes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8411004A FR2567505B1 (fr) | 1984-07-11 | 1984-07-11 | Silice a prise d'huile elevee et a structure primaire controlee et procede pour son obtention |
| EP85401379A EP0170579B1 (fr) | 1984-07-11 | 1985-07-08 | Silice à prise d'huile élevée et à structure primaire controlée et procédé pour son obtention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE40669T1 true ATE40669T1 (de) | 1989-02-15 |
Family
ID=9306012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT85401379T ATE40669T1 (de) | 1984-07-11 | 1985-07-08 | Kieselsaeure mit hoher oelaufnahme und gesteuerter primaerer struktur sowie verfahren zu deren herstellung. |
Country Status (8)
| Country | Link |
|---|---|
| US (3) | US4708859A (https=) |
| EP (1) | EP0170579B1 (https=) |
| JP (1) | JPS61117113A (https=) |
| KR (1) | KR910009573B1 (https=) |
| AT (1) | ATE40669T1 (https=) |
| CA (1) | CA1285116C (https=) |
| DE (1) | DE3568155D1 (https=) |
| FR (1) | FR2567505B1 (https=) |
Families Citing this family (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2589871B1 (fr) * | 1985-09-13 | 1987-12-11 | Rhone Poulenc Chim Base | Charge renforcante pour elastomere a base de silice |
| GB8713263D0 (en) * | 1987-06-05 | 1987-07-08 | Unilever Plc | Spheroidal silica |
| US5614177A (en) * | 1987-11-04 | 1997-03-25 | Rhone-Poulenc Chimie | Dentifrice-compatible silica particulates |
| US5286478A (en) * | 1987-11-04 | 1994-02-15 | Rhone-Poulenc Chimie | Dentifrice-compatible silica particulates |
| FR2631620B1 (fr) * | 1988-05-19 | 1990-07-27 | Rhone Poulenc Chimie | Nouvelle silice precipitee absorbante et composition a base de cette s ilice |
| FR2632185B1 (fr) * | 1988-06-01 | 1992-05-22 | Rhone Poulenc Chimie | Silice pour compositions dentifrices compatible notamment avec le zinc |
| FR2649089B1 (fr) * | 1989-07-03 | 1991-12-13 | Rhone Poulenc Chimie | Silice a porosite controlee et son procede d'obtention |
| US5225177A (en) * | 1990-01-19 | 1993-07-06 | J. M. Huber Corporation | Dentifrice abrasives and compositions |
| US5094829A (en) * | 1990-06-21 | 1992-03-10 | Ppg Industries, Inc. | Reinforced precipitated silica |
| FR2678259B1 (fr) * | 1991-06-26 | 1993-11-05 | Rhone Poulenc Chimie | Nouvelles silices precipitees sous forme de granules ou de poudres, procedes de synthese et utilisation au renforcement des elastomeres. |
| US6001322A (en) * | 1993-09-29 | 1999-12-14 | Rhone-Poulenc Chimie | Precipitated silicas |
| US6169135B1 (en) | 1993-09-29 | 2001-01-02 | Rhone Poulenc Chimie | Precipitated silica |
| EP0670813B1 (fr) * | 1993-09-29 | 2003-03-12 | Rhodia Chimie | Silice precipitee |
| 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. |
| WO1995017459A1 (en) * | 1993-12-20 | 1995-06-29 | Ppg Industries, Inc. | Tire tread composition comprising highly reinforcing silica |
| WO1995017458A1 (en) * | 1993-12-20 | 1995-06-29 | Ppg Industries, Inc. | Tire tread composition comprising highly reinforcing silica |
| FR2714369B1 (fr) * | 1993-12-29 | 1996-01-26 | Rhone Poulenc Chimie | Silices abrasives pour compositions dentifrices. |
| FR2732331B1 (fr) * | 1995-03-29 | 1997-06-20 | Rhone Poulenc Chimie | Nouveau procede de preparation de silice precipitee, nouvelles silices precipitees contenant du zinc et leur utilisation au renforcement des elastomeres |
| JP2908253B2 (ja) * | 1994-09-26 | 1999-06-21 | 日本化学工業株式会社 | 水和珪酸とその製造方法 |
| US5846506A (en) * | 1994-10-07 | 1998-12-08 | Degussa Aktiengesellschaft | Precipitated silicas |
| US5571494A (en) * | 1995-01-20 | 1996-11-05 | J. M. Huber Corporation | Temperature-activated polysilicic acids |
| FR2732330B1 (fr) * | 1995-03-29 | 1997-06-20 | Rhone Poulenc Chimie | Nouveau procede de preparation de silice precipitee, nouvelles silices precipitees contenant du zinc et leur utilisation au renforcement des elastomeres |
| IL117915A (en) * | 1995-04-19 | 2001-05-20 | Ppg Ind Ohio Inc | Amorphous precipitated silica having large liquid carrying capacity |
| US5911963A (en) * | 1995-05-12 | 1999-06-15 | Ppg Industries Ohio, Inc. | Amorphous precipitated silica having a low proportion of small pores |
| DE19527278A1 (de) * | 1995-07-26 | 1997-01-30 | Degussa | Fällungskieselsäure |
| US5804293A (en) * | 1995-12-08 | 1998-09-08 | Ppg Industries, Inc. | Coating composition for recording paper |
| EP0902758B1 (en) * | 1996-05-31 | 2001-06-06 | PPG Industries Ohio, Inc. | Amorphous precipitated silica |
| KR100342941B1 (ko) * | 1996-05-31 | 2002-08-22 | 피피지 인더스트리즈 오하이오 인코포레이티드 | 무정형의침전된실리카 |
| FR2750692B1 (fr) * | 1996-07-05 | 1998-10-16 | Rhone Poulenc Chimie | Nouvelle silice abrasive, utilisable dans les dentifrices, son procede de preparation et compositions dentifrices la contenant |
| FR2762611B1 (fr) * | 1997-04-29 | 1999-06-11 | Atochem Elf Sa | Silice poreuse modifiee, son procede de fabrication et son utilisation dans les peintures et comme vecteur de pigments et colorants |
| US5891949A (en) * | 1997-05-02 | 1999-04-06 | J.M. Huber Corporation | Natural rubber compound |
| US5929156A (en) * | 1997-05-02 | 1999-07-27 | J.M. Huber Corporation | Silica product for use in elastomers |
| FR2763581B1 (fr) * | 1997-05-26 | 1999-07-23 | Rhodia Chimie Sa | Silice precipitee utilisable comme charge renforcante pour elastomeres |
| US6607648B1 (en) * | 1998-11-10 | 2003-08-19 | Integrity Technologies Llc | Method and apparatus for generating aqueous silica network particles |
| US6573032B1 (en) * | 1999-04-22 | 2003-06-03 | J. M. Huber Corporation | Very high structure, highly absorptive hybrid silica and method for making same |
| US6624233B2 (en) | 1999-05-31 | 2003-09-23 | Pirelli Pneumatici S.P.A. | Low rolling resistance tire for vehicles |
| BR0011098A (pt) * | 1999-05-31 | 2002-03-26 | Pirelli | Pneu com baixa resistência ao rolamento para veìculos, banda de rodagem com baixa resistência ao rolamento para pneus de veìculo, e, método para redução da resistência ao rolamento de um pneu |
| CA2292819A1 (en) * | 1999-12-22 | 2001-06-22 | Bayer Inc. | Process for the production of a precipitated silica slurry with a controlled aggregate particle size distribution |
| US7700062B2 (en) * | 2000-10-13 | 2010-04-20 | University Of Cincinnati | Methods for synthesizing precipitated silica and use thereof |
| EP1284277B1 (de) * | 2001-08-08 | 2004-10-20 | Degussa Aktiengesellschaft | Mit Siliziumdioxid umhüllte Metalloxidpartikel |
| US20030096900A1 (en) * | 2001-11-16 | 2003-05-22 | Holden Brian David | Organic plant derived precipitated silica aggregates, elastomers reinforced therewith and articles such as tires with component thereof |
| FR2833937B1 (fr) * | 2001-12-26 | 2004-11-12 | Rhodia Chimie Sa | Silices a faible reprise en eau |
| EP1495502A4 (en) * | 2002-02-07 | 2006-12-13 | Kvg Technologies Inc | GELIFIED ELECTROLYTE LEAD BATTERY BATTERY, FORMED BY FILTRATION OF ABSORBENT SEPARATORS, ITS ELECTROLYTES, AND ITS ABSORBENT SEPARATORS |
| JP2005053728A (ja) * | 2003-08-01 | 2005-03-03 | Dsl Japan Co Ltd | 高吸油性および高い構造性を有する非晶質シリカ粒子 |
| IN2007DE00954A (https=) * | 2007-05-03 | 2016-05-06 | ||
| FR2928363B1 (fr) * | 2008-03-10 | 2012-08-31 | Rhodia Operations | Nouveau procede de preparation de silices precipitees, silices precipitees a morphologie, granulometrie et porosite particulieres et leurs utilisations, notamment pour le renforcement de polymeres |
| US8790608B2 (en) * | 2008-09-12 | 2014-07-29 | Nalco Company | Siliceous materials having tunable porosity and surface morphology and methods of synthesizing same |
| CN102164853B (zh) * | 2008-09-26 | 2014-12-31 | 扶桑化学工业株式会社 | 含有具有弯曲结构和/或分支结构的二氧化硅二次颗粒的胶体二氧化硅及其制造方法 |
| US8609068B2 (en) | 2010-02-24 | 2013-12-17 | J.M. Huber Corporation | Continuous silica production process and silica product prepared from same |
| JP5495880B2 (ja) * | 2010-03-25 | 2014-05-21 | 扶桑化学工業株式会社 | コロイダルシリカの二次粒子径調整方法 |
| US20130109072A1 (en) * | 2010-06-09 | 2013-05-02 | National Institute Of Advanced Industrial Science And Technology | Support for protein immobilization, immobilized protein, and methods for producing the same |
| US9028605B2 (en) | 2011-02-25 | 2015-05-12 | J.M. Huber Corporation | Coating compositions comprising spheroid silica or silicate |
| JP2025542087A (ja) | 2022-11-08 | 2025-12-25 | エボニック オペレーションズ ゲーエムベーハー | 沈降シリカおよびその方法 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2466842A (en) * | 1945-11-15 | 1949-04-12 | Davison Chemical Corp | Method for making silica hydrosol |
| US2577485A (en) * | 1950-09-08 | 1951-12-04 | Du Pont | Process of making stable silica sols and resulting composition |
| GB710015A (en) * | 1950-12-02 | 1954-06-02 | Degussa | An improved process for the production of finely divided silica |
| CH341802A (de) * | 1955-02-03 | 1959-10-31 | Basf Ag | Verfahren zur kontinuierlichen Herstellung kieselsäurehaltiger Hydrogele |
| US2956957A (en) * | 1956-04-02 | 1960-10-18 | Grace W R & Co | Method for producing clear, homogeneous silica hydrosols |
| GB1044019A (en) * | 1963-10-17 | 1966-09-28 | Permutit Co Ltd | Improvements relating to the production of silica sol |
| DE1299617B (de) * | 1965-01-13 | 1969-07-24 | Degussa | Verfahren zur Herstellung von feinverteiltem gefaelltem Siliciumdioxid |
| US3337299A (en) * | 1965-05-24 | 1967-08-22 | Jr Oliver W Burke | Silica pigments and process for producing same |
| US4001379A (en) * | 1968-04-27 | 1977-01-04 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler | Process of making superfine amorphous high structural silicic acid |
| US3954944A (en) * | 1973-03-08 | 1976-05-04 | Joseph Crosfield & Sons, Ltd. | Fine silicas |
| US4191742A (en) * | 1974-05-22 | 1980-03-04 | J. M. Huber Corporation | Amorphous precipitated siliceous pigments and methods for their production |
| US4144321A (en) * | 1974-10-31 | 1979-03-13 | J. M. Huber Corporation | Amorphous precipitated siliceous pigments and methods for their production |
| US4127641A (en) * | 1975-12-10 | 1978-11-28 | Joseph Crosfield And Sons Limited | Process for the preparation of precipitated silicas having morphology similar to pyrogenic silicas |
| FR2353486A1 (fr) * | 1976-06-04 | 1977-12-30 | Rhone Poulenc Ind | Nouvelle silice de synthese amorphe, procede pour son obtention et application de ladite silice dans les vulcanisats |
| FR2444700A1 (fr) * | 1978-12-20 | 1980-07-18 | Rhone Poulenc Ind | Nouvel agent recurant non abrasif et composition lessivielle le renfermant |
| US4243428A (en) * | 1979-01-24 | 1981-01-06 | Donnet Jean Baptise | Processes for the manufacturing of precipitated silica |
| US4356107A (en) * | 1979-11-26 | 1982-10-26 | Nalco Chemical Company | Process for preparing silica sols |
| JPS59163306A (ja) * | 1983-03-08 | 1984-09-14 | Taki Chem Co Ltd | 歯磨用シリカ基剤及びその製法 |
| FR2562534B1 (fr) * | 1984-04-06 | 1986-06-27 | Rhone Poulenc Chim Base | Nouvelle silice precipitee a caracteres morphologiques ameliores, procede pour son obtention et application, notamment comme charge |
-
1984
- 1984-07-11 FR FR8411004A patent/FR2567505B1/fr not_active Expired
-
1985
- 1985-07-08 DE DE8585401379T patent/DE3568155D1/de not_active Expired
- 1985-07-08 EP EP85401379A patent/EP0170579B1/fr not_active Expired
- 1985-07-08 AT AT85401379T patent/ATE40669T1/de not_active IP Right Cessation
- 1985-07-09 CA CA000486487A patent/CA1285116C/en not_active Expired - Fee Related
- 1985-07-10 JP JP60152150A patent/JPS61117113A/ja active Granted
- 1985-07-11 KR KR1019850004952A patent/KR910009573B1/ko not_active Expired
-
1986
- 1986-06-24 US US06/879,492 patent/US4708859A/en not_active Expired - Lifetime
-
1987
- 1987-01-16 US US07/005,012 patent/US4842838A/en not_active Expired - Lifetime
- 1987-08-05 US US07/081,980 patent/US4874594A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4708859A (en) | 1987-11-24 |
| DE3568155D1 (en) | 1989-03-16 |
| JPH0130764B2 (https=) | 1989-06-21 |
| US4874594A (en) | 1989-10-17 |
| US4842838A (en) | 1989-06-27 |
| EP0170579B1 (fr) | 1989-02-08 |
| FR2567505A1 (fr) | 1986-01-17 |
| EP0170579A1 (fr) | 1986-02-05 |
| FR2567505B1 (fr) | 1986-11-21 |
| CA1285116C (en) | 1991-06-25 |
| KR860001008A (ko) | 1986-02-22 |
| JPS61117113A (ja) | 1986-06-04 |
| KR910009573B1 (ko) | 1991-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE40669T1 (de) | Kieselsaeure mit hoher oelaufnahme und gesteuerter primaerer struktur sowie verfahren zu deren herstellung. | |
| ATE135667T1 (de) | Kieselsäurexerogele und deren herstellung | |
| SE8402554L (sv) | Sett vid framstellning av gasfyllda glasperlor | |
| ATE40094T1 (de) | Verfahren zur herstellung von kieselsaeurekolloiden und sphaerischen kieselsaeuren. | |
| FR2566384B1 (fr) | Perfectionnements aux techniques de production de microspheres en verre | |
| NO303574B1 (no) | Ny fremgangsmÕte for fremstilling av 9-amino-6-demetyl-6-deoksytetracykliner | |
| SE7505742L (sv) | Sett att framstella finfordelad, amorf, felld kiseldioxid. | |
| DE69524788D1 (de) | Verfahren zum herstellen von mikrokügelchen aus gel | |
| DE2966007D1 (en) | Process for manufacture of silica by flame hydrolysis | |
| MA21874A1 (fr) | Procede de fabrication d'acide sulfurique avec absorption du gaz de conversion humide . | |
| DE60222164D1 (de) | Modifizierte stärke und verfahren zu deren herstellung | |
| HUT52480A (en) | Process for producing 3,5-dimethyl-4-methoxypyridine derivatives | |
| JPS51115298A (en) | Process for production of spherical silica gel | |
| JPS56164009A (en) | Pyrolytically produced silicic acid and its manufacture | |
| PT73314B (fr) | Procede pour la fabrication de l'acide beta-hydroxybutyrique etde ses oligocondensats | |
| SE8302052L (sv) | Forfarande for differentierad herdning av glasrutor, serskilt vindrutor for motorfordon | |
| DE69200014D1 (de) | Verfahren zur Herstellung von einem Binder. | |
| ATE128457T1 (de) | Optisch aktive n-aplha-fluoracryloylaminosäure- derivate, ihre herstellung, die daraus hergestellten optisch aktiven polymeren und deren verwendung zur spaltung von racematen. | |
| DE3483623D1 (de) | Wiederbelebung eines phosphorvanadium enthaltenden katalysators und dessen herstellungsverfahren, katalysator zur herstellung von maleinesaeureanhydrid, der mit phosphorsaeurealkylestern in anwesenheit von wasser behandelt worden ist. | |
| ATE119154T1 (de) | Verfahren zur herstellung von 2-chlor-5- chlormethyl-pyridin. | |
| GB1040462A (en) | A process for the manufacture of wet-precipitated silica | |
| ATE18036T1 (de) | Verfahren zur herstellung von saeurestabilen zeolithen und kieselsaeurereiche, nach dem verfahren hergestellte zeolithe. | |
| KR910700202A (ko) | 소듐 실리케이트 용액의 열수성 제조방법 | |
| BG45387A3 (bg) | Метод за регенериране на 6-флуор-4-хроманон при производство на сорбинил | |
| MA19030A1 (fr) | Procede de production d'un acide dialkylphosphorique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UEP | Publication of translation of european patent specification | ||
| REN | Ceased due to non-payment of the annual fee |