EP1928804A2 - Procede de preparation d'une composition de platre - Google Patents
Procede de preparation d'une composition de platreInfo
- Publication number
- EP1928804A2 EP1928804A2 EP06808174A EP06808174A EP1928804A2 EP 1928804 A2 EP1928804 A2 EP 1928804A2 EP 06808174 A EP06808174 A EP 06808174A EP 06808174 A EP06808174 A EP 06808174A EP 1928804 A2 EP1928804 A2 EP 1928804A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- plaster
- crosslinking
- water
- polymer
- 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- Withdrawn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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/16—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing anhydrite, e.g. Keene's cement
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0067—Function or property of ingredients for mortars, concrete or artificial stone the ingredients being formed in situ by chemical reactions or conversion of one or more of the compounds of the composition
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
- C04B2111/0062—Gypsum-paper board like materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
Definitions
- the invention relates to a new process for preparing a plaster composition containing a polymer.
- Plaster tiles and gypsum boards intended for damp environments, containing a hydrophobic agent, are known for protecting them against moisture.
- the mechanical properties are degraded in a humid environment. Even if the water recovery is satisfactory, the so-called "hydro" plates present do not exhibit satisfactory mechanical behavior in a humid environment.
- WO-A-03/040055 describes the use of starch and a crosslinker in the manufacture of plasterboard.
- the crosslinking of the starch takes place in the plaster, but this is not done by action of the temperature.
- Crosslinking is described as occurring under the action of a high pH, by the mere presence of reactive chemical compounds. Drying occurs after crosslinking.
- US-A-2002/0128352 discloses a composition for use in gypsum board, comprising an organic binder which is polymerized in situ to form a network.
- the action of temperature is not described as associated with crosslinking.
- removal on a cladding type element takes place after setting.
- This document relates to acoustic panels, in which the Open porosity is obtained by the action of a swelling agent, which may be physical or chemical.
- EP-A-1035088 describes a mixture of plaster with a polymer. The polymer is pre-formed before being added to the plaster paste. There is no mention of crosslinking in the dough and even less of the effect of heat on the crosslinking.
- DE-A-3721668 discloses a mixture of plaster and a composition containing epoxy resin, a crosslinking agent and quartz flour. There is no indication of when the crosslinking takes place and there is no mention of the application of heat.
- US-A-4042409 discloses a plaster composition containing an oxidized paraffin and paraffin emulsion, and optionally a polymer emulsion.
- the emulsions are prepared before mixing with the plaster. There is no mention of crosslinking.
- US-A-4021259 discloses a composition containing plaster, PVA (polyvinyl alcohol) and a metal. There is no indication as to the time of crosslinking with respect to setting, or the action of heat or temperature. In this case, cross-linking occurs simply by the presence of chemical compounds.
- JP-54-33532 describes a process for the preparation of plaster compositions by heating at a temperature of 60 to 80 ° C. of a mixture of hemihydrate, a reaction mixture resulting from the condensation of a monomer of type (meth) acrylamide and urea or melamine and optionally formalin, and an initiator.
- the condensation reactions that take place between the monomers lead to a three-dimensional network, but which is not cross-linked (the crosslinking may be defined as "a polymer-chain bridge reaction leading to a three-dimensional network").
- the crosslinking may be defined as "a polymer-chain bridge reaction leading to a three-dimensional network"
- the composition is left after casting for a time between 5 and 168 hours, then the composition is subjected to the action of the temperature for a time between 2 to 6 hours.
- the minimum duration of the cycle is thus 7 hours, which is not compatible with an industrial production.
- JP-53-44489 discloses a method for preparing a plate from a plaster-based composition by heating at a temperature of 50 to 110 ° C. of a mixture of hemihydrate, a monomer of the type (meth) ) acrylamide in the presence of an amino resin (or a precursor) and fibers.
- This document presents a technique that is similar to that described in the previous document and the same comments apply mutatis mutandis.
- the example implements durations of at least one day, which makes this process incompatible again with industrial production.
- the invention is therefore aimed at improving the preparation processes, in particular making it possible to obtain elements based on plaster having a mechanical behavior in a higher humid environment.
- the invention therefore provides a method for preparing a plaster composition containing a crosslinked polymer, comprising the steps of: preparing a paste of the plaster composition by mixing the various constituents of the composition or precursors of these with water, in a mixer, - hydraulic setting, - and drying and crosslinking in the presence of heat.
- the hydraulic grip has a duration such that the drying can begin on the external parts of the object while the grip continues on the internal parts of the object.
- the water engaged initially is greater than the amount of water strictly necessary for the hydration reaction.
- the hydraulic setting reaction can continue while the amount of water present in the medium decreases by drying action.
- the steps of taking Hydraulic and drying are therefore not exactly sequential, but may overlap to a certain extent.
- Hydraulic setting is typically up to at least 80%, preferably at least 90%, preferably at least 95%.
- the measure of the hydration is done in a classical way, namely measurement on a curve, which can be the rise in temperature, the gain in weight (or the water intake), the hardening, etc. All the classical methods are appropriate.
- the temperature at which the crosslinking is carried out is greater than or equal to 100 ° C., preferably greater than 120 ° C. and / or less than 250 ° C.
- the temperature referred to is that of the atmosphere.
- the invention applies to the manufacture of gypsum board, as well as to the manufacture of plaster tiles.
- the invention also relates to a plaster composition containing a crosslinked polymer, and further comprising a water-resistant additive in an amount such that the water uptake is less than 10%, preferably less than 5%, and advantageously less than 3%.
- This composition is useful as a core composition for plasterboard, comprising a core based on said composition and at least one, advantageously two, facing (s).
- Figure 1 shows the device for measuring the breaking stress.
- DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION The invention uses a composition based on plaster.
- plaster-based composition is meant here a conventional plaster composition, that is to say consisting essentially of plaster.
- plaster in the present disclosure, the product resulting from the hydraulic setting and the hardening of a hydratable calcium sulfate, that is to say an anhydrous calcium sulfate (anhydrite II or III) or a calcium sulphate semihydrate (CaSO 4 , H 2 O) under its various crystalline forms.
- a hydratable calcium sulfate that is to say an anhydrous calcium sulfate (anhydrite II or III) or a calcium sulphate semihydrate (CaSO 4 , H 2 O) under its various crystalline forms.
- the preferred crystalline form is the ⁇ -form, which can be stabilized or not.
- These compounds are well known to those skilled in the art and are generally obtained by baking a gypsum.
- the composition may also include other hydraulic binders in small amounts.
- the density of the core can vary from 700 kg / m 3 to 1100 kg / m 3 , in particular from 750 kg / m 3 to 950 kg / m 3 .
- the E / P ratio used in the invention is variable; by way of non-limiting example, it may vary from 0.2 to 1.5, in particular from 0.5 to 1.2, and especially from 0.55 to 1.2.
- the composition according to the invention comprises a polymer crosslinked by heat.
- the crosslinking provides a three-dimensional network that provides mechanical properties in the presence of water while maintaining the plaster matrix mechanical cohesion. Compared with the Japanese applications cited above, this difference brings significant advantages (the invention obtains a three-dimensional network solely from monomers or polymer).
- the amount of this polymer (crosslinked) can vary widely, for example between 0.1% and 10%, especially 1 to 5%, by weight relative to the weight of the final plaster composition.
- the polymer can be used in any form, but it is preferably in the form of solution or emulsion.
- the plaster is mixed with a solution containing the monomers.
- Polymerization initiators and reagents can be used if needed.
- Initiators of peroxide or azo or persulfate type (ammonium, aluminum or potassium) are suitable, and more broadly any molecule that can form free radicals under the action of temperature.
- acrylic monomers such as acrylamide and N-methylol acrylamide can be used; of methacrylic type such as methacrylamide, or esters of these monomers such as acrylates and PEG methacrylate (MPEG) or PEG methyl methacrylate derivative (MMPEG) or PEG ethyl methacrylate (EMPEG). Mixtures are possible and advantageous.
- Acrylic monomers such as acrylamide and N-methylol acrylamide can be used; of methacrylic type such as methacrylamide, or esters of these monomers such as acrylates and PEG methacrylate (MPEG) or PEG methyl methacrylate derivative (MMPEG) or PEG ethyl methacrylate (EMPEG).
- MPEG PEG methacrylate
- MMPEG PEG methyl methacrylate derivative
- EMPEG PEG ethyl methacrylate
- Crosslinking agents are typically difunctional and are for example methylene-bis-acrylamide (MBA) or PEG dimethacrylate (DMPEG). Crosslinking agents enter the main chain during the polymerization reaction, forming a bridging between two chains.
- MCA methylene-bis-acrylamide
- DMPEG PEG dimethacrylate
- the crosslinking agent used is advantageously of reactivity similar to that of the constituent monomer, and in particular of the same acrylic / acrylic nature; methacrylic / methacrylic.
- polymers are used that will post-crosslink by reaction of a crosslinking agent on the pendant chemical functions of the polymer, or on certain functions of its main chain.
- the crosslinking agent is here any chemical molecule capable of reacting with certain functional groups of the polymer.
- PHPA partially hydrolysed polyacrylamides
- These polymers may be post-crosslinked by the action of chromium acetate, the reaction being carried out between the carboxylic functions (COCfNa + ) incorporated during the synthesis of the polymer, for example at a height of 0.1 to 5%.
- crosslinking agent it is also possible to use polyethylene glycol diglycidylether (PEGDE), adipic acid, glyoxal or glutaraldehyde, and in general any di-functional molecule capable of reacting with the polymer.
- PEGDE polyethylene glycol diglycidylether
- adipic acid glyoxal or glutaraldehyde
- any di-functional molecule capable of reacting with the polymer.
- the molecular weight of the polymer will be relatively low.
- its molecular weight will be between 1,000 and 500,000 g / mol, preferably between 1,000 and
- the amount of polymer will generally be dictated by the viscosity of the aqueous solution obtained by dissolving the polymer in water (in the case of water-soluble polymers).
- the viscosity of the solution obtained depends on the one hand on the polymer concentration and on the other hand on its molecular weight.
- a final concentration by weight, based on the weight of the plaster composition, is in general from 1 to 5%, advantageously from 2 to 4%.
- polymers are used which will self-crosslink on exposure to heat.
- the hanging functions are reactive to heat.
- self-crosslinkable polymers with heat mention may be made of silylated polymers.
- the monomer or polymer is not substantially polymerizable or crosslinkable in the presence of water before the temperature rise step.
- this hydrolysis is not necessarily troublesome; for example polyacrylamide probably hydrolyzes in temperature (at least partially) but this hydrolysis which occurs in temperature only accelerates the crosslinking by chromium acetate.
- the second and third embodiments involve polymers, which in some cases is beneficial over monomers, since the possible toxicity of the monomers is no longer present in the polymer. The handling of these products is thus facilitated.
- Water resistance additives may be added, in particular to reduce the water uptake.
- latex in general; polyvinyl alcohol, with or without a minor amount of polyvinyl acetate; resinates of metal; wax or asphalt or mixtures thereof; water insoluble organic thermoplastic materials, such as, for example, bitumens, synthetic thermoplastic resins such as polyvinyl acetate, polyvinyl chloride and copolymer of vinyl acetate and vinyl chloride, and acrylic resins; metal soaps of resin acids, an alkaline earth metal salt; mixtures of petroleum waxes, especially in the form of an emulsion; silicone derivatives, such as polysiloxane, optionally in admixture with aminosilanes; clay particles coated with silicone derivatives such as polysiloxane
- the amount may vary widely, for example from 0.05% to 5%, preferably 0.5% to 3%, by weight relative to the total weight of the material of heart. In general, the quantity is such that the water up
- the water recovery value of a standard plate is about 40% or more but this value can be decreased to 3% or less by the action of the aforementioned additives. If the starting value of the plate is lower, this value of 3% or less will be even more easily achievable with a lesser amount of water resistance additive.
- composition containing both a crosslinked polymer and a water resistance additive is novel as such.
- the plaster-based composition according to the invention may further comprise additives conventionally used in plaster-based compositions and well known to those skilled in the art.
- additives conventionally used in plaster-based compositions and well known to those skilled in the art.
- setting accelerators setting retarders, binding agents, adhesion promoters, fluidifiers, water retenters, air entraining agents, thickeners, bactericides and fungicides.
- pH adjusters reinforcing materials, flame retardants and / or fillers.
- a foaming agent is added to the plaster paste composition before it is set.
- alkyl sulphates, alkyl ether sulphates or mixtures thereof can be used.
- air is also introduced into the plaster-based composition, for example by adding a foam or by injecting air directly into the dough.
- This foam or plaster paste
- This foam can be made using any suitable foaming agent, for example, the foaming agent of formula ROSO 3 M, as defined on page 14, line 20 to page 15, line 16, of international application WO99 / 08978.
- the plaster composition may further comprise fibers, particularly glass fibers, if necessary.
- the temperature (of air or gas) at which the crosslinking is carried out is in general greater than or equal to 100 ° C., preferably greater than 120 ° C., generally less than 250 ° C. for example, this temperature is between 120 and 250 ° C.
- the plaster-based composition according to the invention may advantageously be formed into a plate with at least one and advantageously two facing (s), to give, after setting and curing hydraulics, a gypsum board that is resistant to moisture.
- the facing may be a hydrophobic cardboard or a mat of fibers, in particular glass fibers.
- the subject of the invention is a process for continuously manufacturing gypsum board, essentially comprising the following steps: preparing a paste of the gypsum composition according to the invention by mixing the various constituents of the composition with gypsum water, in a mixer, - - depositing the dough thus prepared on at least one facing, followed by forming into a ribbon possibly with the coating of the upper face of the dough using a second facing; in particular, the forming consists in thinning the edges of the plate, if necessary, forming the edges of the ribbon of the plate obtained previously by molding the ribbon on profiled strips; hydraulic setting of the plaster on a manufacturing line while the plate ribbon travels on a treadmill; cutting the ribbon at the end of the line, according to determined lengths; and drying the resulting plates (with crosslinking).
- the composition of the plaster paste is obtained in a conventional manner by mixing the hemihydrate with water.
- the additives can be introduced with the hemihydrate in particular when they are in powder form or with part of the mixing water when they are water-soluble or available in liquid form. If a foam is injected into the mixer, the additives may also be possibly present in this foam. In the case of the monomers, they are generally available in liquid form and are simply added to the water without any appreciable change in the viscosity.
- crosslinking agent In the case of polymers, self-crosslinking or crosslinkable with a crosslinking agent, they are generally available in the form of a solution. It may be possible to note an influence on the viscosity of the solution, which is taken into account during the implementation of the process.
- a crosslinking agent When a crosslinking agent is used, it may be added in a filler separate from that containing the monomer or polymer, or on the contrary be added in the same filler. In general, the crosslinking agent is added to the mixing water, or optionally in the aqueous foam if such a foam is used.
- the drying step can be carried out at conventional temperatures in the plasterboard production lines.
- the drying time can be between 30 minutes and 2 hours.
- the temperature (drying air) is generally greater than 100 ° C., preferably greater than 120 ° C., for example, between 120 (or even 150) and 250 ° C., for at least one section of the dryer.
- This temperature in the traditional dryer of plasterboard allows crosslinking, at least in part. Given the kinetics, it is understood that this crosslinking can even continue out of the dryer, as long as the temperature of the plates during storage is still sufficient.
- the invention can be implemented in a conventional plasterboard installation without major modification of the equipment installed.
- the invention also relates to the manufacture of plaster tiles, comprising the steps of casting the plaster paste in a mold and the drying and crosslinking step.
- the setting step (between on the one hand the manufacture of the paste and its casting and the entry into the dryer) has a duration of between 2 and 30 minutes, preferably between 3 and 20 minutes.
- the hydration start step up to the shears typically lasts a few minutes, typically about 3 to 4 minutes or more, the next step of wet transfer and end of hydration up to the dryer inlet lasts 5 to 10 minutes.
- Plaster strips of 20x2x2 cm are prepared by mixing the half-hydrate with water in an E / P ratio of 0.8. The taking takes place in 15 to 20 minutes. The sample is then subjected to a heat treatment of up to 5 hours, preferably 2 hours, at 90 ° C. to 100% RH and then drying at 45 ° C. for 24 hours.
- Monomers are used at varying concentrations, with crosslinking agents in varying concentration.
- the monomer concentration is given relative to the weight of hemihydrate engaged while the concentration of crosslinking agent is given in ppm relative to the amount of monomer.
- the breaking strength values are given in MPa. The uncertainty in the values is less than 15%.
- the experimental setup for measuring the breaking stress is shown in Figure 1.
- the speed of movement of the force measuring probe is 1 mm / min.
- the breaking stress is defined as follows:
- Constraint (MPa) 3Pc / bh 2 , where P is the Force at break.
- P the Force at break.
- 8% acrylamide is used relative to the hemihydrate.
- MMA methylenebisacrylamide
- Ammonium persulfate is used as a 0.1% initiator with respect to the semi-hydrate.
- Example A is pure semihydrate.
- PEG methacrylate (MPEG) monomer or PEG methylmethacrylate (MMPEG) derivative of variable molecular weight, given in brackets in the examples, is used.
- PEG dimethacrylate 200 ppm is used as crosslinking agent with respect to the organic addition of PEG dimethacrylate. (DMPEG).
- An initiator is used at a rate of 0.1% of APS (ammonium persulfate) relative to the hemihydrate except in Example 13 in which 0.1% of DuPont V50 azoic is used.
- MMPEG PEG methylmethacrylate
- MMPEG 1100 molecular weight 1100
- MMPEG 1100 molecular weight 1100
- Methacrylamide is used as a monomer at a concentration of 8%.
- PEG dimethacrylate is used as a crosslinking agent to concentration of 1000 ppm.
- DMPEG PEG dimethacrylate
- a hydrophobic agent a mixture of polysiloxane and aminosilane is used in an amount of 3: 1. The total concentration of this mixture is here 0.7% relative to the hemihydrate. The results are shown in Table 5. Table 5
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0509678A FR2890959B1 (fr) | 2005-09-22 | 2005-09-22 | Procede de preparation d'une composition de platre. |
PCT/FR2006/002152 WO2007034073A2 (fr) | 2005-09-22 | 2006-09-20 | Procede de preparation d'une composition de platre |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1928804A2 true EP1928804A2 (fr) | 2008-06-11 |
Family
ID=36570975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06808174A Withdrawn EP1928804A2 (fr) | 2005-09-22 | 2006-09-20 | Procede de preparation d'une composition de platre |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080206599A1 (fr) |
EP (1) | EP1928804A2 (fr) |
KR (1) | KR20080047621A (fr) |
AU (1) | AU2006293818A1 (fr) |
CA (1) | CA2622819A1 (fr) |
FR (1) | FR2890959B1 (fr) |
WO (1) | WO2007034073A2 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8323400B2 (en) | 2007-11-30 | 2012-12-04 | Celanese International Corporation | Additive composition for mortars, cements and joint compounds and cementitious compositions made therefrom |
US8882907B2 (en) | 2007-11-30 | 2014-11-11 | Celanese International Corporation | Additive composition for mortars, cements and joint compounds and cementitious compositions made therefrom |
US20170107151A1 (en) * | 2015-10-19 | 2017-04-20 | United States Gypsum Company | Water-resistant gypsum products and methods |
WO2018234835A1 (fr) * | 2017-06-19 | 2018-12-27 | Toeroecsik Ferencne | Mélange de gypse résistant de façon permanente à l'humidité et plaque de plâtre préparée à partir de celui-ci |
EP3883904A1 (fr) * | 2018-11-21 | 2021-09-29 | Knauf Gips KG | Utilisation de co2 en tant que réducteur de la demande en eau dans des mortiers par réhydratation de stuc de gypse |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5344489B1 (fr) * | 1970-06-30 | 1978-11-29 | ||
US4021259A (en) * | 1972-06-19 | 1977-05-03 | Japan Synthetic Rubber Co., Ltd. | Gypsum composition |
JPS51115533A (en) * | 1975-04-03 | 1976-10-12 | Mitsubishi Chem Ind | Water repellent gypsum compound |
JPS5433532A (en) * | 1977-08-19 | 1979-03-12 | Kogyo Gijutsuin | Production of gypsummresin complex |
AT388550B (de) * | 1987-06-27 | 1989-07-25 | Muanyagipari Kutato Intezet | Verfahren zur hydrophobierung von gipsgegenstaenden |
FR2789679B1 (fr) * | 1999-02-12 | 2001-03-30 | Lafarge Platres | Element de construction prefabrique a base de platre, presentant une resistance a l'eau |
US6492450B1 (en) * | 1999-03-05 | 2002-12-10 | Rohm And Haas Company | Use of polymers in gypsum wallboard |
US6743830B2 (en) * | 2001-03-07 | 2004-06-01 | Innovative Construction And Building Materials | Construction board materials with engineered microstructures |
US20030084980A1 (en) * | 2001-11-06 | 2003-05-08 | Seufert James F | Lightweight gypsum wallboard and method of making same |
-
2005
- 2005-09-22 FR FR0509678A patent/FR2890959B1/fr not_active Expired - Fee Related
-
2006
- 2006-09-20 AU AU2006293818A patent/AU2006293818A1/en not_active Abandoned
- 2006-09-20 EP EP06808174A patent/EP1928804A2/fr not_active Withdrawn
- 2006-09-20 CA CA002622819A patent/CA2622819A1/fr not_active Abandoned
- 2006-09-20 KR KR1020087009565A patent/KR20080047621A/ko not_active Application Discontinuation
- 2006-09-20 WO PCT/FR2006/002152 patent/WO2007034073A2/fr active Application Filing
- 2006-09-20 US US12/065,998 patent/US20080206599A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2007034073A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007034073A2 (fr) | 2007-03-29 |
KR20080047621A (ko) | 2008-05-29 |
US20080206599A1 (en) | 2008-08-28 |
CA2622819A1 (fr) | 2007-03-29 |
FR2890959B1 (fr) | 2008-04-18 |
AU2006293818A1 (en) | 2007-03-29 |
FR2890959A1 (fr) | 2007-03-23 |
WO2007034073A3 (fr) | 2007-06-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2899225A1 (fr) | Plaque de platre allegee et composition de pate de platre utile pour sa fabrication. | |
EP1928804A2 (fr) | Procede de preparation d'une composition de platre | |
JP4956398B2 (ja) | コンクリートの処理法 | |
JP2008542520A (ja) | 水性分散液および溶融押出成形品に使用するビニルアルコールコポリマー | |
EP1751218A2 (fr) | Nouvel agent hydrofugeant hydrodispersable, sa preparation et son utilisation dans le domaine de la construction et plus particulierement dans les compositions de liants mineraux | |
FR2852312A1 (fr) | Un procede pour augmenter l'hydrofugation de compositions de liants mineraux ainsi que les compositions susceptibles d'etre obtenues par ce procede et leurs utilisations | |
KR101250492B1 (ko) | 보존-안정성의 실레인-개질된 수성 분산 중합체 | |
EP0890621B1 (fr) | Revêtement | |
JP4965236B2 (ja) | 高い含有量の不飽和流動促進剤を伴う水性ポリマー分散物 | |
EP1274663A1 (fr) | Procede de preparation de copolymeres acryliques hydrosolubles | |
JP2013006932A (ja) | シーラー用樹脂組成物 | |
FR3097866A1 (fr) | Composition comprenant un composé renfermant deux groupes polymérisables, un polymère à étages multiples et un polymère thermoplastique, son procédé de préparation, son utilisation et article la comprenant | |
FR2476669A1 (fr) | Composition d'appret applicable sur fonds de mortier de ciment ou de beton | |
JPS6131434A (ja) | 無機成形体改質用エマルジヨン及びその製造法 | |
TW201004974A (en) | Solution polymerization process and adhesive, sealant, and mastic compositions made therefrom | |
EP0030881B1 (fr) | Nouvelles compositions à base de polymères synthétiques et leur utilisation comme adjuvants des mélanges de liants hydrauliques | |
FR2842188A1 (fr) | Composition a base de liant hydraulique | |
JPS5832050A (ja) | セメント混和用水性分散体 | |
JP2003523476A (ja) | 水性分散体の床用接着剤配合物での使用 | |
JP4397237B2 (ja) | 多孔性無機板用シーラー | |
FR3107057A1 (fr) | Un panneau de construction ayant une stabilité dimensionnelle améliorée | |
CN117777358A (zh) | 一种含噁唑啉基的共聚物、制备方法、应用、组合物 | |
TW202212376A (zh) | 改質乙烯醇系聚合物、水溶液、及改質乙烯醇系聚合物之製造方法 | |
JPH11349770A (ja) | ビニル樹脂系エマルジョン | |
JPH0459272B2 (fr) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080422 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20080718 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: THOUILLEUX, PHILIPPE Inventor name: BOISVERT, JEAN-PHILIPPE Inventor name: JAVIERRRE, ISABELLE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20110205 |