EP1794101A1 - Systeme et procede de production d'une matiere moussee contenant du platre - Google Patents
Systeme et procede de production d'une matiere moussee contenant du platreInfo
- Publication number
- EP1794101A1 EP1794101A1 EP05770702A EP05770702A EP1794101A1 EP 1794101 A1 EP1794101 A1 EP 1794101A1 EP 05770702 A EP05770702 A EP 05770702A EP 05770702 A EP05770702 A EP 05770702A EP 1794101 A1 EP1794101 A1 EP 1794101A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gypsum
- organic polymer
- setting
- foamed
- dispersion
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
Definitions
- the invention is in the field of plasters and gypsum-containing building materials.
- the present invention relates to a system for producing a foamed gypsum material and the gypsum material ("gypsum foam”) obtainable with this system itself.
- the present invention relates to a method for producing a foamed gypsum material or a method for foaming a gypsum material as well as to this Way available gypsum material (“gypsum foam”) itself.
- gypsum When in the context of the present invention of "gypsum" is mentioned, so it is generally gypsum in an unbound, d. H. So meant in a still settable form.
- unbound or settable gypsum can be produced industrially by partial dewatering of calcium sulphate hydrates, in particular calcium sulphate dihydrate. The dehydration is usually up to about the level of hemihydrate hemihydrate.
- Such calcium sulphate hemihydrates occur in various modifications, for example in the modifications referred to as ⁇ - and ⁇ -modifications.
- the calcium sulfate In completely anhydrous form, the calcium sulfate is present in particular in the form of the anhydrite.
- Abbindeschreiber or not-bound gypsum in the context of the present invention therefore denotes in particular the Calciumsulfathemihydrate and anhydrous calcium sulfate, in particular anhydrite.
- raw material for drainage to settable or non-gypsum gypsum can be used, for example, occurring in natural deposits or gypsum incurred in flue gas desulphurisation plants.
- gypsum or gypsum-containing mortar mixtures are mixed with water.
- the lower hydrates of the gypsum formed during dewatering finally form the crystalline calcium sulfate dihydrate.
- the gypsum or mortar cures the gypsum or mortar.
- retarders can be added to the gypsum; These are additives or additives (additives) that delay setting - also known as curing.
- Such retarders are described, for example, in German patent application DE 101 27 060 A1, which is based on the applicant himself, or in EP-A-0 607 039, EP-AO 633 390, EP-A-1 270 530, US Pat. 5,488,991, US-A-5,484,478 and US-A-5,908,885, the entire contents thereof
- the disclosure is hereby incorporated by reference. Due to their setting retarding effect, the retarders are sometimes synonymously referred to as hydration retardants or hydration inhibitors.
- the setting times of the gypsum can be shortened by means of so-called accelerators or the effect of the retarders prolonging the setting time can be canceled.
- Foamed materials have the advantage of lower weight per volume over non-foamed materials, i. H. So a lower density. In this way, in the application - compared to non-foamed material - more volume can be filled with less raw materials, resulting in a considerable combins ⁇ and thus cost savings.
- Foamed building materials in particular polyurethane foams (PU foams) or acrylic-based plastic foams, are used in particular for filling cavities and interstices.
- PU foams polyurethane foams
- acrylic-based plastic foams are used in particular for filling cavities and interstices.
- PU foams polyurethane foams
- PU foams polyurethane foams
- Existing dispersion-based foams from the aerosol can z. B. GREAT STUFF ® Acrylic Latex Foam Sealant by the company. DAP
- An object of the present invention is thus to provide a system and a method for producing a foamed gypsum-containing material ("gypsum foam”), which in particular avoids the disadvantages of the prior art described above.
- foamed gypsum-containing materials having relatively short drying times, preferably less than 24 hours, and shortly after application Removable or wiped with water.
- foamed gypsum materials which show no or no significant post-expansion and no or no appreciable shrinkage.
- Foamed materials should be producible in this way, which have sufficient strength and dimensional stability after drying or setting.
- the present invention - according to a first aspect of the present invention - is thus a system for producing a foamed gypsum-containing material, in particular in the form of an aqueous-based dispersion, wherein the system
- the settable or non-gypsum plaster used in accordance with the invention in particular all settable or non-bonded calcium sulfates are suitable according to the invention.
- the settable gypsum may be in the form of a settable hydrated calcium sulfate or in the form of a settable anhydrous calcium sulfate, especially in the form of anhydrite.
- the settable gypsum is particularly preferably in the form of a calcium sulfate hemihydrate.
- the amount of settable gypsum in the system according to the invention can vary within wide ranges.
- the gypsum in amounts of 5 to 70 wt .-%, in particular 10 to 60 wt .-%, preferably 25 to 40 % By weight, based on the system according to the invention.
- the amount of gypsum can be - in addition to the drying time - specifically set and control the hardness and strength achieved after drying or setting and the weight of the generated "gypsum foam 11 .
- the organic polymer acts as a binder and hardens after application of the foamed material together with the gypsum into a solid mass ("solidified foam"), which has sufficient strength or dimensional stability to be used as a building material or building material become. Therefore, in the context of the present invention, the organic polymer is also referred to as "polymeric organic binder".
- the organic polymer is a water-soluble or water-dispersible polymer.
- the organic polymer is used in dissolved or dispersed form, in particular in the form of an aqueous-based dispersion or solution. Therefore, so-called dispersion polymers are used in particular in the context of the present invention.
- the amounts with which the organic polymer used according to the invention is used in the system according to the invention can vary within wide limits.
- the organic polymer used according to the invention based on the system according to the invention, in amounts of 5 to 85 wt .-%, in particular 20 to 75 wt .-%, preferably 30 to 70 wt .-%, used.
- this aqueous dispersion containing the polymer is generally used in amounts of from 20 to 90% by weight, in particular from 30 to 75% by weight. .
- polymer dispersions having a solids content (polymer content) of from 20 to 80% by weight, in particular from 30 to 70% by weight, preferably from 40 to 65% by weight, based on the dispersion, are used. Similarly, it is also possible to deviate from the aforementioned amounts, if this should be required by the application.
- gypsum foam In conjunction with the amount of gypsum can be adjusted by the amount of polymer used - in addition to the drying time - specifically achieved after drying or setting hardness and strength and the weight of the generated "gypsum foam" or control.
- the organic polymer has film-forming properties.
- the organic polymer used according to the invention has number-average molecular masses M n > 100,000, in particular M n > 500,000, preferably M n > 750,000, particularly preferably M n > 1,000,000.
- the organic polymer used according to the invention may be selected from the group of polymers and / or copolymers based on
- Alkylene and alkadienylene especially ethylene, propylene, butadiene and isoprene
- Vinyl esters of versatic acid in particular VeoVa 9, 10 and 11;
- Reactive monomers in particular methylolacrylamide
- Silane-containing monomers such as vinylalkoxysilanes
- the organic polymer may also be selected from the group of polyvinyl alcohols, polyvinyl pyrrolidones, polyethylene glycols and hydroxyethyl cellulose and mixtures thereof.
- the organic polymer used according to the invention may be a polyurethane-based polymer, in particular in the form of an aqueous-based polyurethane dispersion.
- polymer dispersions are for example aqueous dispersion of an acrylate polymer with a solids content of about 50% from Rohm & Haas with the label Primax ® 310 and of the BASF AG distributed dispersion of a styrene / butyl acrylate polymer called Acronal ® 290D having a solids content of about 50%,
- this causes the actual foaming process, d. H. the production of the foamed gypsum-containing material based on the above-described settable gypsum together with the organic polymer described above.
- the propellant should in particular be selected such that it acts at least substantially with respect to the organic polymer or at most only slightly swelling.
- the blowing agent should be selected such that from the organic polymer at most 0 to 25 wt .-%, in particular at most 1 to 20 wt .-%, preferably at most 5 to 15 wt .-%, based on the organic polymer, of the blowing agent are receivable. In this way, a Nachexpansion or shrinkage of the foamed gypsum-containing material is prevented.
- blowing agents according to the invention are liquid at room temperature under atmospheric pressure.
- Propellants preferred in accordance with the invention are emulsifiable in the aqueous phase.
- the aforementioned properties facilitate the application of the system according to the invention.
- Blowing agents which are liquid at room temperature under atmospheric pressure also have the advantage that, for example when they leave a closed container (eg a can), the volume expansion is greater than with gaseous propellants. A high volume expansion of the propellant in turn leads to a low density of the applied foam, d. H. descriptive spoken, can be produced with little starting material, a larger foam volume.
- propellants which are liquid at room temperature under atmospheric pressure have the advantage that the gypsum and the polymer are dispersible therein, so that homogeneous dispersions can be produced after intensive mixing (for example by shaking).
- Propellants which are suitable according to the invention are selected, for example, from the group of alkanes, in particular propane, butane and isobutane, and also mixtures of propane and butane; Ethers, in particular dimethyl ether; fluorinated hydrocarbons, in particular 1, 1, 1, 2-tetrafluoroethane and 1, 1-difluoroethane; carbon dioxide; Nitrous oxide (nitrous oxide, N 2 O); and mixtures of the aforementioned blowing agents.
- fluorinated hydrocarbons are relatively expensive and can also cause ozone depletion and carbon dioxide can lead to acidification of the system according to the invention and thus to coagulation of the dispersion are propellants based on alkanes, especially propane, butane and isobutane and mixtures of propane and Butane, and ethers, in particular
- Dimethyl ether preferred. Since isobutane has a lower pressure than propane and butane, propane and butane and propane / butane mixtures are particularly preferred. The same applies to dimethyl ether.
- the amount of blowing agent used in the system according to the invention can vary within wide limits. In general, based on the system according to the invention, it is in the range from 5 to 30% by weight, in particular 7.5 to 15% by weight. Nevertheless, it may be possible to derogate from the above amounts if required by the application.
- setting retarders synonymously also sometimes referred to as hydration retardants or hydration inhibitors - may be added to the system according to the invention.
- setting retarders synonymously also sometimes referred to as hydration retardants or hydration inhibitors -
- hydration retardants or hydration inhibitors -
- hydration retardants or hydration inhibitors -
- Examples of preferred setting retarders according to the invention are organic acids and their salts, in particular acrylic acid and methacrylic acid polymers and copolymers, such as (meth) acrylic acid / maleic acid (anhydride) copolymers, tartaric acid and citric acid; Succinimide and aspartate polymers and copolymers; carboxyl-substituted polymers (eg, carboxyl group-containing polymerized amino acids, carboxyl-substituted polymeric sugars, carboxyl-substituted modified polyacrylates, etc.); Phosphates, such as hexamethaphosphate and tetrasodium pyrophosphate; and mixtures of the aforementioned compounds.
- acrylic acid and methacrylic acid polymers and copolymers such as (meth) acrylic acid / maleic acid (anhydride) copolymers, tartaric acid and citric acid; Succinimide and aspartate polymers and copolymers; carboxyl-substi
- the amount of optionally existing retarder can equally vary within wide limits. It should in particular be chosen such that a significant setting retardant effect is effected.
- the setting retarder if present, in amounts of 0.1 to 5 wt .-%, in particular 0.5 to 2 wt .-%, based on the inventive system used. Similarly, it is also possible to deviate from the aforementioned amounts, if this should be required by the application.
- the system according to the invention comprises a setting retarder
- it should moreover also contain a setting accelerator, which is advantageously added to the system only immediately before or during the application in order to remove the setting-delaying effect of the setting retarder or to accelerate the setting process.
- the ab ⁇ -accelerating effect or the setting-retarding effect of the set retarder can be explained by the fact that the calcium complexes reversibly formed by the set retardants prevent the setting process Addition of Abbindebelixers be resolved so that the previously complexed calcium ions are released again and then can lead with the existing sulfate ions to hardened gypsum.
- setting accelerator known from the prior art as such compounds can be used.
- setting accelerator compounds from the group of aluminum, iron, zinc, alkali and Alkaline earth salts.
- the setting accelerators are preferably aluminum (III), zinc (II) and iron (III) salts, in particular aluminum, iron and zinc sulfate.
- the binding accelerator is used in amounts of from 0.01 to 5% by weight, preferably from 0.1 to 0.5% by weight, based on the system according to the invention. Similarly, it is also possible to deviate from the aforementioned amounts, if this should be required by the application.
- the system according to the invention also contains so-called film-forming aids - also known as “film-forming aids”, “film-forming auxiliaries”. or “film former”.
- film-forming aids also known as “film-forming aids”, “film-forming auxiliaries”. or “film former”.
- the film-forming aids in this way support the film formation on the substrate, on which the foamed gypsum-containing material is applied, and thus facilitate the filming of the polymer.
- high-boiling solvents due to their low
- the effectiveness of the solvents which can be used as film-forming aids is highly dependent on the particular type of dispersion, ie one and the same solvent lowers the minimum film-forming temperature (MFT) of different polymer dispersions to varying degrees.
- Unlimited water-miscible solvents such.
- As ethanol or ethylene glycol, are as film-forming aids in the present This invention is generally not particularly suitable because it remains in the outer, aqueous phase of a dispersion and does not migrate into the polymer; they also lower the original viscosity of the dispersion, while better suitable film-forming aids according to the invention increase the viscosity as a result of solvation of the polymer particles. Therefore suitable film-forming aids according to the invention, in particular based on solvents or plasticizers, have only limited water miscibility or water solubility.
- film-forming auxiliaries are high-boiling solvents and plasticizers, particularly with boiling points above 200 0 C, preferably above 250 0 C.
- examples include glycols and glycol derivatives such. As butyl triglycol and its derivatives, for. B. Butyltrigklykolacetat.
- the amount of optionally used film-forming agent can equally vary within wide ranges. In general, it is based on the system according to the invention in the range of 0.1 to 3 wt .-%, in particular 0.5 to 1 wt .-%. Similarly, it is also possible to deviate from the aforementioned amounts, if this should be required by the application.
- the system according to the invention additionally contains at least one foam stabilizer.
- suitable foam stabilizers are, for example, higher alcohols, in particular C 10 -C 3 o-alcohols, or so-called fatty alcohols, especially C16-Ci8 fatty alcohols, or optionally alkoxylated, in particular ethoxylated higher alcohols and fatty alcohols or fatty amines and their salts (e.g. B. ammonium stearate).
- fatty alcohols especially C16-Ci8 fatty alcohols, or optionally alkoxylated, in particular ethoxylated higher alcohols and fatty alcohols or fatty amines and their salts (e.g. B. ammonium stearate).
- foam stabilizers which are particularly suitable according to the invention are hexadecanol, oleylcetyl alcohol + 5-EO,
- the amount of foam stabilizers in the system according to the invention can vary within wide limits.
- the foam stabilizers in amounts of 0.05 to 5 wt .-%, in particular 0.3 to 1, 5 wt .-%, based on the inventive system used.
- the system according to the invention contains at least one solvent.
- solvent for example, known per se
- Solvents are used, for. As lower hydrocarbons or preferably lower alcohols, such as methanol, ethanol or isopropanol.
- lower hydrocarbons or preferably lower alcohols such as methanol, ethanol or isopropanol.
- the use of solvents has the advantage that optionally used as foam stabilizers higher alcohols or fatty alcohols are dissolved in the solvent and thereby can be distributed homogeneously in the dispersion.
- the amount of optionally present solvents can equally vary within wide ranges. In general, it is in the range of 0 to 5 wt .-%, in particular 1, 5 to 3 wt .-%, based on the inventive system.
- the system according to the invention for producing the foamed gypsum-containing material advantageously as a so-called two-component system, wherein the two components are brought together only immediately before or during their application, preferably with intensive mixing (eg Shaking, etc.).
- intensive mixing eg Shaking, etc.
- the individual components can be arranged in the two components.
- setting accelerators on the one hand and setting retarders, on the other hand are advantageously present in different, in particular separate, ie in particular spatially separated components which are combined only immediately before or during use.
- the settable gypsum is generally used together with the setting retarder in one component, and in the other component the setting accelerator is brought into contact with the gypsum and set retarder only immediately before or during use ,
- the component which contains the settable gypsum and / or the component which contains the organic polymer are advantageously present in the form of a preferably aqueous dispersion.
- the settable gypsum, the organic polymer which can be foamed with the settable gypsum, the propellant and all other, optionally present furthermore, the settable gypsum, the organic polymer which can be foamed with the settable gypsum, the propellant and all other, optionally present, further
- Ingredients especially setting retarders, foam stabilizers, film-forming aids, solvents, etc. are present in a first component, while the setting accelerator is present in another, second component. Immediately before or during the application of the system according to the invention, the two components are then combined, generally under intimate
- the two components of the 2-component system in a closable container for.
- a spray can or an aerosol can are combined with each other, which has a spray head from which then the foamed gypsum-containing material can be applied.
- the organic polymer in the first component, is present together with the blowing agent and the setting accelerator and in the second component the settable gypsum together with the setting retarder, while the remaining optional ingredients (film forming aids, , Foam stabilizers, solvents, etc.) may be present in the first and / or in the second component.
- the organic polymer in the first component of the system according to the invention, may be present together with the setting accelerator, while in the second component the settable gypsum is present together with the blowing agent and optionally the setting retarder, whereas the optionally present, other further ingredients (film-forming agents, foam stabilizers, solvents, etc.) may be present in the first and / or in the second component.
- the components which comprise the settable gypsum and / or the organic polymer are advantageously present as dispersions, preferably as aqueous-based dispersions.
- Tables 1 to 3 schematically represent the three previously described variants of the system according to the invention in its construction as a two-component system: Table i: "Variant 1"
- the system according to the invention can be designed as follows:
- a water-based polymer dispersion having a foam stabilizer Plaster retarder (carboxyl group-containing polymers, such as. For example Sokalan ® CP5 ex BASF AG) and abbindestillem gypsum added ( "mixture A"). Due to the gypsum retarder, the gypsum does not yet bind in the dispersion. A stable mixture of dispersion and settable gypsum is obtained. This "mixture A” is placed in an aerosol can and mixed with propellant (for example propane / butane or dimethyl ether).
- propellant for example propane / butane or dimethyl ether
- an accelerator eg based on aluminum or iron (III) salts
- 2-component can, second nozzle, accelerator in powder form in order tubes
- simple mixing etc.
- gypsum-containing materials can readily be foamed.
- foamed gypsum materials can be used (“Gypsum foams") produce that harden or dry relatively quickly.
- the curing or drying times are generally less than 24 hours.
- the applied after application generally water-based "gypsum foam” dries relatively quickly, especially within a few hours, and is dimensionally stable due to the set gypsum and has relatively high strengths on.
- amount of gypsum can - in addition to the drying time - also set after drying or setting hardness and strength of the produced "gypsum foam” set.
- foamed volume can be set or controlled relatively precisely.
- the system according to the invention is generally water-based and therefore very environmentally friendly. Since only harmless ingredients or ingredients are used, in particular no organic isocyanates, it is harmless in its application and therefore not subject to labeling.
- Another object of the present invention - according to a second aspect of the present invention - is a method for producing a foamed gypsum-containing material or a method for foaming a gypsum-containing material, wherein the settable gypsum, as defined above, with at least one together with the settable gypsum foamable organic polymer, as defined above, by means of at least one suitable propellant, optionally in the presence of at least one setting retarder, at least one setting accelerator and optionally further ingredients, in particular foam stabilizers, film-forming agents, solvents and the like, to a gypsum-containing material ("gypsum foam”) foaming, followed by drying and / or
- Another object of the present invention - according to a third aspect of the present invention - is the foamed gypsum-containing material produced with the system according to the invention or obtainable by the process according to the invention and subsequently dried and set.
- the present invention thus relates to a foamed gypsum-containing material which comprises set gypsum together with an organic polymer previously foamed with the gypsum and, if appropriate, further ingredients, in particular as defined above (for example setting retarder, setting accelerator,
- Foam stabilizers, film-forming aids, solvents, etc. preferably in homogeneous distribution.
- foamed gypsum-containing materials are dimensionally stable and have in particular bulk densities in the range of 20 to 100 g / l, preferably 30 to 50 g / l, on.
- Another object of the present invention - according to a fourth aspect of the present invention - a container, in particular a for Foaming suitable can ("aerosol can") containing the inventive system described above.
- Foam stabilizer 1, 9 g Sokalan ® CP5 (BASF AG, offset setting retarder based on carboxyl-containing polymers) and mixed. 19.03 g of alpha-30 gypsum (Südharzer gypsum works) are stirred into this mixture. Just before filling into the aerosol can, the total mixture is mixed with 1.2 g of a 13% strength aluminum sulfate solution. After the aluminum sulfate has been stirred in, the total mixture is filled into an aerosol can; the can is closed and 5 g propane / butane propellant are poured into the can. After vigorous shaking, the mixture is immediately foamed. A foam is obtained which has dried through within 15 hours.
- Example 2 Example 2:
- the total mixture is mixed with 1, 2 g of a 13% solution of aluminum sulfate. After the aluminum sulfate has been stirred in, the total mixture is filled into an aerosol can; the can is closed and 5 g propane / butane propellant are poured into the can. After vigorous shaking, the mixture is immediately foamed. A foam is obtained which has dried through within 14 hours.
- Texapon ® NSO (Fa. Cognis) was added and mixed. The total mixture is filled into an aerosol can and, after closing the can, 5 g of propane / butane propellant are poured into the can. After vigorous shaking, the mixture is filled with foam. This gives a foam that takes more than 24 hours to dry.
- Texapon ® NSO (Fa. Cognis) was added and mixed. The total mixture is filled into an aerosol can, and after sealing the can, 5 g of the propellant Propane / butane filled in the can. After vigorous shaking, the mixture is filled with foam. This gives a foam that takes more than 24 hours to dry.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410043968 DE102004043968A1 (de) | 2004-09-11 | 2004-09-11 | System und Verfahren zur Erzeugung eines aufgeschäumten gipshaltigen Materials |
PCT/EP2005/006456 WO2006027035A1 (fr) | 2004-09-11 | 2005-06-16 | Systeme et procede de production d'une matiere moussee contenant du platre |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1794101A1 true EP1794101A1 (fr) | 2007-06-13 |
Family
ID=35064882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05770702A Withdrawn EP1794101A1 (fr) | 2004-09-11 | 2005-06-16 | Systeme et procede de production d'une matiere moussee contenant du platre |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1794101A1 (fr) |
DE (1) | DE102004043968A1 (fr) |
WO (1) | WO2006027035A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106947050B (zh) * | 2017-05-03 | 2020-02-18 | 湖北博天体育设施有限公司 | 一种环保无毒的水性聚氨酯材料及其制备方法 |
EP3461858A1 (fr) | 2017-09-28 | 2019-04-03 | HILTI Aktiengesellschaft | Système de mousse à deux composants et son utilisation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4804688A (en) * | 1985-03-22 | 1989-02-14 | Vassileff Neiko I | Open-cell foamed gypsum insulation |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2940785A1 (de) * | 1979-10-08 | 1981-04-16 | Hoechst Ag, 6000 Frankfurt | Schaumgips, verfahren zu seiner herstellung, seine verwendung und daraus bestehendes bauelement |
CA2084494C (fr) * | 1992-04-28 | 1997-06-24 | Peter Paul Roosen | Composition de gypse plastifie |
ATE205174T1 (de) * | 1995-12-20 | 2001-09-15 | Henkel Kgaa | Zusammensetzung zur erzeugung von leichtgips und ihre verwendung |
US6171388B1 (en) * | 1998-03-17 | 2001-01-09 | Rhodia Inc. | Lightweight gypsum composition |
US20030125405A1 (en) * | 2001-09-03 | 2003-07-03 | Hilton Dennis M. | Foamed fireproofing composition and method |
-
2004
- 2004-09-11 DE DE200410043968 patent/DE102004043968A1/de not_active Withdrawn
-
2005
- 2005-06-16 EP EP05770702A patent/EP1794101A1/fr not_active Withdrawn
- 2005-06-16 WO PCT/EP2005/006456 patent/WO2006027035A1/fr active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4804688A (en) * | 1985-03-22 | 1989-02-14 | Vassileff Neiko I | Open-cell foamed gypsum insulation |
Non-Patent Citations (1)
Title |
---|
See also references of WO2006027035A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006027035A1 (fr) | 2006-03-16 |
DE102004043968A1 (de) | 2006-03-30 |
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