WO1998050144A1 - Verfahren zur granulierung von aerogelen - Google Patents
Verfahren zur granulierung von aerogelen Download PDFInfo
- Publication number
- WO1998050144A1 WO1998050144A1 PCT/EP1998/002519 EP9802519W WO9850144A1 WO 1998050144 A1 WO1998050144 A1 WO 1998050144A1 EP 9802519 W EP9802519 W EP 9802519W WO 9850144 A1 WO9850144 A1 WO 9850144A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- aerogels
- mixing device
- agglomerates
- gel
- airgel particles
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
Definitions
- the present invention relates to a method for granulating aerogels.
- Aerogels in particular those with porosities above 60% and densities below 0.6 g / cm 3 , have an extremely low thermal conductivity and are therefore used as heat insulation material, as described in EP-A-0 1 71 722, as catalysts or Catalyst carrier, as well as an adsorbent material.
- the use for Cerenkov detectors is known due to their very low refractive index for solids.
- the literature describes a possible use as an impedance matching, for example in the ultrasound range, due to its special acoustic impedance.
- Aerogels in the broader sense ie in the sense of "gel with air as the dispersion medium" are produced by drying a suitable gel.
- airgel in this sense includes aerogels in the narrower sense, xerogels and cryogels.
- a dried gel is referred to as an airgel in the narrower sense if the liquid of the gel is largely removed at temperatures above the critical temperature and starting from pressures above the critical pressure. If, on the other hand, the liquid of the gel becomes subcritical, for example with the formation of a liquid-vapor boundary phase removed, the resulting gel is often referred to as xerogel.
- aerogels in the broad sense, i.e. in the sense of "gel with air as a dispersion medium”.
- the term does not include xerogels known from the older literature, which e.g. obtained by precipitation of silica (e.g. DE 3025437, DD 296 898), or as pyrogenic silica, e.g. Aerosil TM. In these cases, a homogeneous three-dimensional gel network is not formed over large distances during production.
- Inorganic aerogels have been known since 1 931 (SS Kistler, Nature 1 931, 1 27.741). Since then, aerogels have been made from a wide variety of starting materials.
- z. B. SiO 2 -, AI 2 O 3 -, TiO 2 -, ZrO 2 -, SnO 2 -, Li 2 0, CeO 2 -, V 2 0 5 -Aerogels and mixtures of these can be prepared (H .D. Gesser, PCGoswami, Chem. Rev. 1 989, 89.765ff).
- organic aerogels made from a wide variety of starting materials, e.g. from melamine formaldehyde, known (R.W. Pekala, J. Mater. Sci. 1 989, 24, 3221).
- Inorganic aerogels can be produced in different ways.
- SiO 2 aerogels can be produced, for example, by acid hydrolysis and condensation of tetraethyl orthosilicate in ethanol. This creates a gel that is obtained by supercritical drying while maintaining the structure can be dried. Manufacturing processes based on this drying technique are known, for example, from EP-A-0 396 076, WO 92/03378 or WO 95/0661 7.
- An alternative to supercritical drying is a method for subcritical drying of SiO 2 gels.
- the SiO 2 gel can be obtained, for example, by acid hydrolysis of tetraalkoxysilanes in a suitable organic solvent using water. After replacing the solvent with a suitable organic solvent, the gel obtained is reacted with a silylating agent in a further step. The resulting SiO 2 gel can then be dried in air from an organic solvent. This enables aerogels with densities below 0.4 g / cm 3 and porosities above 60% to be achieved. The manufacturing process based on this drying technique is described in detail in WO 94/251 49.
- the gels described above can also be mixed with tetraalkoxysilanes and aged in the alcohol-aqueous solution before drying in order to increase the gel network strength, as disclosed in WO 92/20623.
- the tetraalkoxysilanes used as starting materials in the processes described above also represent an extremely high cost factor.
- a not inconsiderable cost reduction can be achieved by using water glass as the starting material for the production of the SiO 2 gels.
- a silica can be produced from an aqueous water glass solution with the aid of an ion exchange resin, and this polycondenses into an SiO 2 gel by adding a base. After replacing the aqueous medium with a suitable organic solvent, the gel obtained is then reacted with a chlorine-containing silylating agent in a further step. The resulting, on the surface z. B. modified with methylsilyl groups SiO 2 gel can also be dried in air from an organic solvent. The manufacturing method based on this technique is known from DE-A-43 42 548.
- DE-A-1 95 02 453 also describes the use of chlorine-free silylating agents in the production of subcritically dried aerogels.
- DE-A-1 95 34 1 98 also describes organofunctionalization using organofunctionalized silylating agents in the production of subcritically dried aerogels.
- airgel particles are, however, for the sake of Process engineering and the manufacturing costs on an industrial scale limited to particle sizes smaller than 5 mm, preferably smaller than 2 mm.
- the object of the present invention is therefore to provide a method by means of which small airgel particles below 2 mm can be formed into larger airgel particles.
- This object is achieved by a method in which the airgel particles are placed in a mixing device and mixed, and a binder is fed to the mixing device.
- the binder can be added to the mixing device before, during and / or after the addition of the airgel particles, the subsequent addition being preferred.
- the airgel particles are set in motion so that they have a relative movement with one another.
- the binder is used as an aqueous or non-aqueous solution or suspension or as a melt, e.g. by spraying.
- the binder leads to the agglomeration of the primary airgel particles into larger agglomerates.
- the binder leads through chemical reaction, solidification, crystallization due to evaporation or evaporation of the solvent, possibly also under the influence of elevated temperatures, to a connection of the mixture components.
- the binder is added as a solid.
- the binding then takes place by chemical reaction of the solid with one or more components of the mixture, or by softening a solid binder, e.g. through elevated temperatures, which makes it sticky and binds the particles of the mixture together.
- Another expedient embodiment provides that, in addition to the airgel particles, additives and / or fillers, which may be in the form of particles or fibers, are added to the mixing device.
- a preferred embodiment provides that the size of the agglomerates is separated. This is advantageously done by screening the target fraction from the resulting granules in accordance with the desired particle size range. Granules that are too large can optionally be comminuted, for example with a chopper or knife head, and sieved so that they are in the desired particle size range or are fed back to the agglomerating apparatus after comminution. Granules that are too small can possibly be returned to the agglomerating apparatus. which are fed.
- the agglomerates are dried before further processing.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR19997010098A KR20010012153A (ko) | 1997-05-02 | 1998-04-29 | 에어로겔의 과립화 방법 |
CA002287849A CA2287849A1 (en) | 1997-05-02 | 1998-04-29 | Method for granulating aerogels |
JP54769598A JP2001523162A (ja) | 1997-05-02 | 1998-04-29 | エーロゲルの造粒方法 |
EP98925496A EP0979141A1 (de) | 1997-05-02 | 1998-04-29 | Verfahren zur granulierung von aerogelen |
US09/433,931 US6481649B1 (en) | 1997-05-02 | 1999-11-01 | Method for granulating aerogels |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19718740A DE19718740A1 (de) | 1997-05-02 | 1997-05-02 | Verfahren zur Granulierung von Aerogelen |
DE19718740.4 | 1997-05-02 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/433,931 Continuation US6481649B1 (en) | 1997-05-02 | 1999-11-01 | Method for granulating aerogels |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998050144A1 true WO1998050144A1 (de) | 1998-11-12 |
Family
ID=7828544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/002519 WO1998050144A1 (de) | 1997-05-02 | 1998-04-29 | Verfahren zur granulierung von aerogelen |
Country Status (8)
Country | Link |
---|---|
US (1) | US6481649B1 (de) |
EP (1) | EP0979141A1 (de) |
JP (1) | JP2001523162A (de) |
KR (1) | KR20010012153A (de) |
CN (1) | CN1126592C (de) |
CA (1) | CA2287849A1 (de) |
DE (1) | DE19718740A1 (de) |
WO (1) | WO1998050144A1 (de) |
Cited By (1)
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EP2581216A1 (de) | 2011-10-12 | 2013-04-17 | Dow Global Technologies LLC | Tafel mit Feuerschutzwand |
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---|---|---|---|---|
DE19648798C2 (de) * | 1996-11-26 | 1998-11-19 | Hoechst Ag | Verfahren zur Herstellung von organisch modifizierten Aerogelen durch Oberflächenmodifikation des wäßrigen Gels (ohne vorherigen Lösungsmitteltausch) und anschließender Trocknung |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0031166A1 (de) * | 1979-12-21 | 1981-07-01 | Grünzweig + Hartmann und Glasfaser AG | Verfahren zur Herstellung von Wärmeisolierkörpern sowie Vorrichtung zur Durchführung des Verfahrens |
WO1996015997A1 (de) * | 1994-11-23 | 1996-05-30 | Hoechst Aktiengesellschaft | Aerogelhaltiges verbundmaterial, verfahren zu seiner herstellung sowie seine verwendung |
WO1997010188A1 (de) * | 1995-09-11 | 1997-03-20 | Hoechst Research & Technology Deutschland Gmbh & Co. Kg | Faserhaltiges aerogel-verbundmaterial |
Family Cites Families (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE296898C (de) | ||||
DE261581C (de) | 1912-01-17 | 1913-06-25 | Krupp Ag | Aufschlagzünder mit ein- und ausschaltbarer Verzögerung |
US2093454A (en) | 1934-10-01 | 1937-09-21 | Samuel S Kistler | Method of producing aerogels |
US2385217A (en) | 1942-10-09 | 1945-09-18 | Socony Vacuum Oil Co Inc | Gel pellets |
GB607234A (en) | 1946-01-15 | 1948-08-27 | Standard Oil Dev Co | Improved process for the preparation of gel particles |
NL74665C (de) | 1949-04-07 | |||
GB682574A (en) | 1950-05-04 | 1952-11-12 | Dow Corning Ltd | Improvements in or relating to silica compositions |
US2680696A (en) | 1951-02-14 | 1954-06-08 | Du Pont | Method of esterifying the surface of a silica substrate having a reactive silanol surface |
US2786042A (en) | 1951-11-23 | 1957-03-19 | Du Pont | Process for preparing sols of colloidal particles of reacted amorphous silica and products thereof |
US2886460A (en) | 1954-09-14 | 1959-05-12 | Du Pont | Organophilic and hydrophilic composition |
GB783868A (en) | 1954-10-06 | 1957-10-02 | Midland Silicones Ltd | A process of preparing hydrophobic organo-silicon powders |
US3015645A (en) | 1954-10-06 | 1962-01-02 | Dow Corning | Silica powders |
US2978298A (en) | 1956-09-04 | 1961-04-04 | Gen Electric | Process for producing hydrophobic aerogels |
US3122520A (en) | 1959-10-05 | 1964-02-25 | Dow Corning | Method of making silicone rubber fillers |
US3024126A (en) | 1960-06-15 | 1962-03-06 | Dow Corning | Method of treating reinforcing silica |
DE1667078B2 (de) | 1967-10-31 | 1979-07-19 | W.R. Grace & Co., New York, N.Y. (V.St.A.) | Verfahren zur Herstellung von kugelförmigen Kieselsäurehydrogelen |
SE319161B (de) | 1968-01-30 | 1970-01-12 | Fosfatbolaget Ab | |
US3794713A (en) | 1968-08-06 | 1974-02-26 | Nat Petro Chem | Preparation of silica gels |
DE2103243C3 (de) | 1971-01-25 | 1979-01-11 | Basf Ag, 6700 Ludwigshafen | Verfahren und Vorrichtung zur Herstellung von weitgehend kugelförmigen, Kieselsäure enthaltenden Hydrogelen |
US4101443A (en) | 1976-06-01 | 1978-07-18 | Union Carbide Corporation | Transient antifoam compositions |
US4101442A (en) | 1976-06-01 | 1978-07-18 | Union Carbide Corporation | Non-aqueous antifoam compositions |
US4190457A (en) | 1978-06-09 | 1980-02-26 | Phillips Petroleum Co. | Preparation of inorganic xerogels |
CS208879B1 (en) | 1979-07-09 | 1981-10-30 | Ivan Novak | Preparation method of silicic acid xerogel with high volumen of pores |
US4344800A (en) | 1980-06-03 | 1982-08-17 | Dow Corning Corporation | Method for producing hydrophobic reinforcing silica fillers and fillers obtained thereby |
DE3329016A1 (de) | 1983-08-11 | 1985-02-28 | Basf Ag, 6700 Ludwigshafen | Verfahren zum herstellen von polymerisaten des ethylens mittels eines kieselsaeure-xerogel/chromtrioxid-katalysators |
DE3429671A1 (de) | 1984-08-11 | 1986-02-20 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von aerogelen |
JPS6169867A (ja) | 1984-09-13 | 1986-04-10 | Mitsubishi Rayon Co Ltd | シリカ微粒子含有樹脂組成物 |
US4649037A (en) | 1985-03-29 | 1987-03-10 | Allied Corporation | Spray-dried inorganic oxides from non-aqueous gels or solutions |
FR2584698B1 (fr) * | 1985-07-15 | 1990-05-18 | Rhone Poulenc Spec Chim | Procede de preparation de particules de silice spheroidales |
US5215733A (en) | 1986-04-25 | 1993-06-01 | Unilever Patent Holdings B.V. | Manufacture of silica gels using shear to reduce the particle size prior to washing with a hydrocyclone |
US4888369A (en) | 1987-01-21 | 1989-12-19 | Himont Incorporated | Polypropylene composition resistant to high energy radiation, and radiation sterilized articles therefrom |
FR2613708B1 (fr) | 1987-04-13 | 1990-10-12 | Rhone Poulenc Chimie | Silice de precipitation hydrophobe, son procede de preparation et son application au renforcement des elastomeres silicones |
US4950502A (en) | 1987-09-10 | 1990-08-21 | Dow Corning Corporation | Method of hydrophobing silica |
US5001183A (en) | 1987-09-10 | 1991-03-19 | Dow Corning Corporation | Method of hydrophobing silica |
US4873218A (en) | 1988-05-26 | 1989-10-10 | The United States Department Of Energy | Low density, resorcinol-formaldehyde aerogels |
JPH02152196A (ja) | 1988-12-03 | 1990-06-12 | Osaka Prefecture | 分散型el素子 |
DE3914850A1 (de) | 1989-05-05 | 1990-11-08 | Basf Ag | Thermisches isoliermaterial auf der basis von pigmenthaltigen kieselsaeureaerogelen |
WO1992003378A1 (en) | 1990-08-23 | 1992-03-05 | United States Department Of Energy | A METHOD FOR PRODUCING METAL OXIDE AEROGELS HAVING DENSITIES LESS THAN 0.02 g/cm?3¿ |
US5409683A (en) | 1990-08-23 | 1995-04-25 | Regents Of The University Of California | Method for producing metal oxide aerogels |
JP2646150B2 (ja) | 1990-08-27 | 1997-08-25 | 出光興産 株式会社 | 撥水性シリカゾルおよびその製造方法 |
US5674962A (en) | 1990-11-30 | 1997-10-07 | Mitsubishi Rayon Company Ltd. | Toner resin |
US5081163A (en) | 1991-04-11 | 1992-01-14 | The United States Of America As Represented By The Department Of Energy | Melamine-formaldehyde aerogels |
NO912006D0 (no) | 1991-05-24 | 1991-05-24 | Sinvent As | Fremgangsmaate for fremstilling av et silika-aerogel-lignende materiale. |
DE4201306A1 (de) | 1992-01-20 | 1993-07-22 | Basf Ag | Formteile oder platten aus silica-aerogelen |
US5565142A (en) | 1992-04-01 | 1996-10-15 | Deshpande; Ravindra | Preparation of high porosity xerogels by chemical surface modification. |
DE4231749A1 (de) | 1992-09-23 | 1994-03-24 | Basf Ag | Verfahren zur Herstellung eines Trägerkatalysators für die Polymerisation von alpha-Olefinen |
US5420168A (en) | 1993-04-01 | 1995-05-30 | The Regents Of The University Of California | Method of low pressure and/or evaporative drying of aerogel |
DE4316540A1 (de) | 1993-05-18 | 1994-11-24 | Hoechst Ag | Verfahren zur unterkritischen Trocknung von Aerogelen |
US5508341A (en) | 1993-07-08 | 1996-04-16 | Regents Of The University Of California | Organic aerogel microspheres and fabrication method therefor |
DE69424941T2 (de) | 1993-07-22 | 2000-11-02 | Huntsman Ici Chem Llc | Organische aerogele |
US5484818A (en) | 1993-07-22 | 1996-01-16 | Imperial Chemical Industries Plc | Organic aerogels |
CN1042822C (zh) | 1993-08-31 | 1999-04-07 | Basf公司 | 疏水白炭黑 |
JP2725573B2 (ja) | 1993-11-12 | 1998-03-11 | 松下電工株式会社 | 疎水性エアロゲルの製法 |
US5795556A (en) | 1993-12-14 | 1998-08-18 | Hoechst Ag | Xerogels and process for their preparation |
DE4342548A1 (de) | 1993-12-14 | 1995-06-22 | Hoechst Ag | Xerogele, Verfahren zu ihrer Herstellung, sowie ihre Verwendung |
DE4404701A1 (de) | 1994-02-15 | 1995-08-17 | Hoechst Ag | Verbundschaumstoffe, Verfahren zu ihrer Herstellung und ihre Verwendung |
US5494858A (en) | 1994-06-07 | 1996-02-27 | Texas Instruments Incorporated | Method for forming porous composites as a low dielectric constant layer with varying porosity distribution electronics applications |
DE4430669A1 (de) | 1994-08-29 | 1996-03-07 | Hoechst Ag | Verfahren zur Herstellung von faserverstärkten Xerogelen, sowie ihre Verwendung |
US5476878A (en) | 1994-09-16 | 1995-12-19 | Regents Of The University Of California | Organic aerogels from the sol-gel polymerization of phenolic-furfural mixtures |
DE4437424A1 (de) | 1994-10-20 | 1996-04-25 | Hoechst Ag | Aerogelhaltige Zusammensetzung, Verfahren zu ihrer Herstellung sowie ihre Verwendung |
DE4439217A1 (de) | 1994-11-03 | 1996-05-09 | Hoechst Ag | Verfahren zur Herstellung von Aerogelen |
CN1063246C (zh) | 1994-12-21 | 2001-03-14 | 卡伯特公司 | 含有双组分纤维的纤维网/气凝胶复合材料及其生产工艺和使用 |
DE19502453C1 (de) | 1995-01-27 | 1996-09-05 | Hoechst Ag | Verfahren zur Herstellung von modifizierten Si0¶2¶- Aerogelen und deren Verwendung |
DE19506141A1 (de) | 1995-02-22 | 1996-08-29 | Hoechst Ag | Verwendung von Aerogelen in der Pharmazie, in der Kosmetik und im Pflanzenschutz |
DE19534198A1 (de) | 1995-09-15 | 1997-03-20 | Hoechst Ag | Verfahren zur Herstellung organofunktionalisierter Aerogele |
DE19537821A1 (de) | 1995-10-11 | 1997-04-17 | Hoechst Ag | Aerogelbeschichtete Folie |
US5595593A (en) | 1995-10-12 | 1997-01-21 | Dow Corning Corporation | Treatment of fillers with oxa-silacycloalkanes |
DE19541279A1 (de) | 1995-11-06 | 1997-05-07 | Hoechst Ag | Verfahren zur Herstellung von organisch modifizierten Aerogelen unter Verwendung von Alkoholen |
DE19541715A1 (de) | 1995-11-09 | 1997-05-15 | Hoechst Ag | Verfahren zur Herstellung von organisch modifizierten Aerogelen, bei dem die gebildeten Salze ausgefällt werden |
DE19541992A1 (de) | 1995-11-10 | 1997-05-15 | Hoechst Ag | Verfahren zur Herstellung von organisch modifizierten Aerogelen unter Verwendung von Alkoholen, bei dem gebildeten Salze ausgefällt werden |
DE19648798C2 (de) | 1996-11-26 | 1998-11-19 | Hoechst Ag | Verfahren zur Herstellung von organisch modifizierten Aerogelen durch Oberflächenmodifikation des wäßrigen Gels (ohne vorherigen Lösungsmitteltausch) und anschließender Trocknung |
US5708069A (en) | 1997-02-24 | 1998-01-13 | Dow Corning Corporation | Method for making hydrophobic silica gels under neutral conditions |
US5750610A (en) | 1997-02-24 | 1998-05-12 | Dow Corning Corporation | Hydrophobic organosilicate-modified silica gels |
-
1997
- 1997-05-02 DE DE19718740A patent/DE19718740A1/de not_active Ceased
-
1998
- 1998-04-29 JP JP54769598A patent/JP2001523162A/ja not_active Ceased
- 1998-04-29 CA CA002287849A patent/CA2287849A1/en not_active Abandoned
- 1998-04-29 CN CN98805627A patent/CN1126592C/zh not_active Expired - Fee Related
- 1998-04-29 KR KR19997010098A patent/KR20010012153A/ko not_active Application Discontinuation
- 1998-04-29 WO PCT/EP1998/002519 patent/WO1998050144A1/de not_active Application Discontinuation
- 1998-04-29 EP EP98925496A patent/EP0979141A1/de not_active Ceased
-
1999
- 1999-11-01 US US09/433,931 patent/US6481649B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0031166A1 (de) * | 1979-12-21 | 1981-07-01 | Grünzweig + Hartmann und Glasfaser AG | Verfahren zur Herstellung von Wärmeisolierkörpern sowie Vorrichtung zur Durchführung des Verfahrens |
WO1996015997A1 (de) * | 1994-11-23 | 1996-05-30 | Hoechst Aktiengesellschaft | Aerogelhaltiges verbundmaterial, verfahren zu seiner herstellung sowie seine verwendung |
WO1997010188A1 (de) * | 1995-09-11 | 1997-03-20 | Hoechst Research & Technology Deutschland Gmbh & Co. Kg | Faserhaltiges aerogel-verbundmaterial |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2581216A1 (de) | 2011-10-12 | 2013-04-17 | Dow Global Technologies LLC | Tafel mit Feuerschutzwand |
WO2013053566A1 (en) | 2011-10-12 | 2013-04-18 | Dow Global Technologies Inc. | Panel with fire barrier |
EP3613583A1 (de) | 2011-10-12 | 2020-02-26 | Dow Global Technologies Llc | Platte mit brandschutzbarriere |
Also Published As
Publication number | Publication date |
---|---|
CN1258230A (zh) | 2000-06-28 |
DE19718740A1 (de) | 1998-11-05 |
CN1126592C (zh) | 2003-11-05 |
CA2287849A1 (en) | 1998-11-12 |
KR20010012153A (ko) | 2001-02-15 |
US6481649B1 (en) | 2002-11-19 |
EP0979141A1 (de) | 2000-02-16 |
JP2001523162A (ja) | 2001-11-20 |
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