NO311756B1 - Process for preparing water repellent porous plaster molds - Google Patents
Process for preparing water repellent porous plaster molds Download PDFInfo
- Publication number
- NO311756B1 NO311756B1 NO19940615A NO940615A NO311756B1 NO 311756 B1 NO311756 B1 NO 311756B1 NO 19940615 A NO19940615 A NO 19940615A NO 940615 A NO940615 A NO 940615A NO 311756 B1 NO311756 B1 NO 311756B1
- Authority
- NO
- Norway
- Prior art keywords
- foam
- added
- water
- alkylhydrogenpolysiloxane
- mixing water
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000005871 repellent Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000011505 plaster Substances 0.000 title abstract description 13
- 230000002940 repellent Effects 0.000 title 1
- 239000006260 foam Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 229910052602 gypsum Inorganic materials 0.000 claims description 19
- 239000010440 gypsum Substances 0.000 claims description 19
- -1 alkyl hydrogen Chemical compound 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 239000004088 foaming agent Substances 0.000 description 5
- 238000005187 foaming Methods 0.000 description 4
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 150000003961 organosilicon compounds Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Medicinal Preparation (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Sealing Material Composition (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
Description
Foreliggende oppfinnelse angår en fremgangsmåte for fremstilling av vannavvisende porøse gipsformlegemer, spesielt porøse gipsplater av komponentene gipspulver, blandevann, skum så vel som eventuelt ytterligere vanlige tilsetningsstoffer, ved tilsetning av alkylhydrogenpolysiloksaner. The present invention relates to a method for the production of water-repellent porous plaster mouldings, in particular porous plasterboard from the components plaster powder, mixing water, foam as well as possibly further common additives, by adding alkylhydrogenpolysiloxanes.
Fra DE-AS-1223287 er det kjent en fremgangsmåte for fremstilling av vannavvisende formlegemer og overtrekk av uorganiske masser herdet ved tilsetning av vann, hvor den uorganiske massen for oppnåelse av vannavvisningen blir tilsatt i form av vandige emulsjoner før formgivingen av organosilisiumforbindelsene. Denne prefabrikerte emulsjonen har riktignok vist seg pålitelig i praksis, men den er betydelig dyrere enn de tilgjengelige organosilisiumforbindelsene i oljeform i ikke emulgert form. From DE-AS-1223287, a method for the production of water-repellent moldings and coatings of inorganic masses hardened by the addition of water is known, where the inorganic mass to achieve the water repellency is added in the form of aqueous emulsions before shaping the organosilicon compounds. This prefabricated emulsion has indeed proven reliable in practice, but it is considerably more expensive than the available organosilicon compounds in oil form in non-emulsified form.
Fra DE-OS 2740049 er det kjent å blande inn lineære monome-tylpolysiloksaner i gipspulvere i fravær av vann og først deretter røre ut gipsen med vann. Denne fremgangsmåten har i praksis vist seg lite pålitelig, da på den ene siden behovet for monometylpolysiloksan er relativt høyt og på den andre siden lar et gipspulver forbehandlet på denne måten seg bearbeide vesentlig dårligere. From DE-OS 2740049 it is known to mix linear monomethylpolysiloxanes into plaster powders in the absence of water and only then to stir the plaster with water. In practice, this method has proven to be unreliable, as on the one hand the need for monomethylpolysiloxane is relatively high and on the other hand a gypsum powder pre-treated in this way can be processed significantly worse.
Fra EP-PS 0171018 er det kjent en fremgangsmåte hvor det blir fremstilt vannavvisende porøse gipsformlegemer med alkylhydrogenpolysiloksaner, ved at man fra vann, tensid og polyalkylhydrogensiloksan oppnår et skum og tilsetter dette skummet til den vandige gipsrøren, bestående av blandevann, gipspulver så vel som eventuelt ytterligere tilsetningsstoffer. Denne fremgangsmåten har i praksis vist seg pålitelig, så fremt spesielle parametre som riktignok ikke er nevnt i patentskriftet, blir tatt hensyn til. En vesentlig ulempe ved denne fremgangsmåten består i at ved utførelsen av fremstillingen av gipsplater på slike store anlegg, blir doseringen av den utrørte gipsblandingen blant annet regulert ved variasjon av den tilsatte skummengden. Denne varierende skummengden fører således til forskjeller i hydrofobe egenskaper til sluttproduktet. From EP-PS 0171018, a method is known in which water-repellent porous gypsum moldings are produced with alkylhydrogenpolysiloxanes, by obtaining a foam from water, surfactant and polyalkylhydrogensiloxane and adding this foam to the aqueous gypsum pipe, consisting of mixing water, gypsum powder as well as possibly additional additives. This method has proven to be reliable in practice, as long as special parameters which are admittedly not mentioned in the patent document are taken into account. A significant disadvantage of this method consists in the fact that when carrying out the production of plasterboard on such large facilities, the dosage of the stirred plaster mixture is regulated, among other things, by varying the amount of foam added. This varying amount of foam thus leads to differences in the hydrophobic properties of the final product.
Foreliggende oppfinnelse har således stilt seg den oppgave å fremskaffe en fremgangsmåte for fremstilling av vannavvisende porøse gipsformlegemer, spesielt porøse gipsplater, hvorved det fra komponentene gipspulver, blandevann, skum, så vel som eventuelt ytterligere tilsetningsstoffer og alkylhydrogenpolysiloksaner kan fremstilles et feilfritt produkt, uten at det er nødvendig å tilsette alkylhydrogenpolysiloksanet i form av forfremstilt emulsjon eller i form av et skum dannet umiddelbart før fremstillingen. Ønsket var således å kombinere fordelen med samtidig dosering av alkylhydrogenpolysiloksanet ved tilsetning av emulsjoner med vesentlig lavere kostnader ved tilsetning av alkylhydrogenpolysiloksanet til skum, hvor det imidlertid som ulempe må tas hensyn til at doseringen av forskjellige skummengder også fører til svingninger i hydrofobe egenskaper. The present invention has thus set itself the task of providing a method for the production of water-repellent porous gypsum moldings, in particular porous gypsum boards, whereby a flawless product can be produced from the components gypsum powder, mixing water, foam, as well as possibly further additives and alkyl hydrogen polysiloxanes, without it is necessary to add the alkylhydrogen polysiloxane in the form of a pre-prepared emulsion or in the form of a foam formed immediately before the preparation. The desire was thus to combine the advantage of simultaneous dosing of the alkylhydrogenpolysiloxane by adding emulsions with significantly lower costs when adding the alkylhydrogenpolysiloxane to foam, where, however, the disadvantage must be taken into account that the dosing of different amounts of foam also leads to fluctuations in hydrophobic properties.
Ved foreliggende oppfinnelse tilveiebringes følgelig en fremgangsmåte for fremstilling av vannavvisende porøse gipsformlegemer, spesielt porøse gipsplater, av komponentene gipspulver, blandevann, skum så vel som eventuelt ytterligere vanlige tilsetningsstoffer ved tilsetning av alkylhydrogenpolysiloksan, kjennetegnet ved at alkylhydrogenpolysiloksanet ikke blir tilsatt i skumf remstilleren, men blir tilsatt blandevannet eller en delstrøm av dette som inneholder vanlige tilsetningsstoffer, men ingen skumdannende stoffer, hvorpå blandingen blir intensivt blandet i et flere meter langt rør med turbulent strømning. The present invention therefore provides a method for the production of water-repellent porous gypsum moldings, in particular porous gypsum boards, from the components gypsum powder, mixing water, foam as well as possibly further common additives by adding alkylhydrogenpolysiloxane, characterized in that the alkylhydrogenpolysiloxane is not added in the foam maker, but is added to the mixing water or a sub-stream of this containing common additives, but no foam-forming substances, after which the mixture is intensively mixed in a tube several meters long with turbulent flow.
Dette resultatet kunne ikke forutses med utgangspunkt i teknikkens stand. I EP-PS 0171018 blir det på spalte 1, linjene 27 til 39 uttrykkelig fastslått at det i praksis er umulig å fordele oljen på grunn av dens vannuoppløselighet i vandig gipsblanding bestående av blandevann og gipspulver. Selv om tilsetningen av ikke emulgerte oljer beskrives som den vesentlig mest lønnsomme form, angis det ingen fremgangs-måter for jevn fordeling av oljen i gipsblandingen. This result could not be predicted based on the state of the art. In EP-PS 0171018, column 1, lines 27 to 39 expressly state that it is practically impossible to distribute the oil due to its water insolubility in an aqueous gypsum mixture consisting of mixing water and gypsum powder. Although the addition of non-emulsified oils is described as the substantially most profitable form, no procedures are indicated for even distribution of the oil in the plaster mixture.
Forsøk i store anlegg i bestående produksjonsanlegg har vist at det ifølge oppfinnelsen også er mulig å arbeide med oljer og derved avstå fra dosering av skumdanner. Av stor betydning er at alkylhydrogenpolysiloksanet som olje blir intensivt blandet med blandevannet i et flere meter langt rør med turbulent strømming, før det kommer i berøring med gipspulveret. For denne typen intensiv blanding er det tilstrekkelig med et 2 m langt rør. Eørlengder på 4 til 6 m har vist seg meget pålitelige. Enda lengre rør kan også benyttes, imidlertid blir her effekten ikke ytterligere forbedret; den anvendte mengden blandevann kan nødvendiggjøre relativt stor rørdiameter. For å oppnå turbulent strømming i røret skal nemlig rørdiameteren maksimalt utgjøre 2% av rørlengden. Fortrinnsvis velger man rørdiametre på 0,1 til 1% av rørlengden. Ved turbulent strømming danner det seg i et rør først etter 50 til 100 rørdiametre en konstant hastighetsprofil i strømmingsretningen. Det Reynoldske tall spiller da ingen rolle lenger. Under disse turbulente strømningsbetingelsene lar vann og silikonolje seg bearbeide til en emulsjon som umiddelbart kan viderebearbeides. Experiments in large facilities in existing production facilities have shown that according to the invention it is also possible to work with oils and thereby refrain from dosing foam formers. Of great importance is that the alkylhydrogen polysiloxane as oil is intensively mixed with the mixing water in a tube several meters long with turbulent flow, before it comes into contact with the gypsum powder. For this type of intensive mixing, a 2 m long pipe is sufficient. Ear lengths of 4 to 6 m have proven very reliable. Even longer pipes can also be used, however, here the effect is not further improved; the amount of mixing water used may necessitate a relatively large pipe diameter. In order to achieve turbulent flow in the pipe, the pipe diameter must be a maximum of 2% of the pipe length. Pipe diameters of 0.1 to 1% of the pipe length are preferably chosen. In the case of turbulent flow, a constant velocity profile in the flow direction only forms in a pipe after 50 to 100 pipe diameters. The Reynolds number then no longer plays a role. Under these turbulent flow conditions, water and silicone oil allow themselves to be processed into an emulsion that can be immediately further processed.
Undersøkelsene har vist at det ikke kun er mulig å tilsette alkylhydrogenpolysiloksan til hovedstrømmen av blandevannet, men at det også er godt mulig å tilsette alkylhydrogenpolysiloksanet til de forskjellige delstrømmene som inneholder vanlige tilsetningsstoffer, men ingen skumdannende stoffer. Spesielt fordelaktig har tilsetning til delstrømmen av en tilberedt papirmasse vist seg å være. Da ikke alle porøse gipsplater inneholder papirmasse, kan man tilsette alkylhydrogenpolysiloksanet til delstrømmen som inneholder ikke-skumdannende overflateaktive stoffer, som først og fremst virker som flytendegjørende middel, som f.eks. 1igninsulfonat. Deretter kan man også tilsette alkylhydrogenpolysiloksanet til delstrømmen som inneholder forklistret stivelse. Disse delstrømmen er således alltid suspensjoner, emulsjoner eller oppløsninger, men ikke skum. The investigations have shown that it is not only possible to add alkylhydrogenpolysiloxane to the main stream of the mixing water, but that it is also quite possible to add the alkylhydrogenpolysiloxane to the various partial streams that contain normal additives, but no foam-forming substances. Addition to the partial stream of a prepared paper pulp has proven to be particularly advantageous. As not all porous plasterboards contain paper pulp, the alkylhydrogen polysiloxane can be added to the partial stream containing non-foaming surfactants, which primarily act as a liquefying agent, such as e.g. 1ignin sulfonate. The alkylhydrogen polysiloxane can then also be added to the partial stream containing pre-glued starch. These partial streams are thus always suspensions, emulsions or solutions, but not foams.
Som ytterligere overraskende fordel er det funnet at forbruket av skummesmiddelet ifølge oppfinnelsen kan reduseres med ca. 2056 i forhold til en fremgangsmåte hvor silikonoljen blir tilsatt skummemidlet. Det blir således til den ferdige gipsblandingen, for oppløsning(Auflockerung) av denne, tilsatt et skum som ikke inneholder noen silikonolje. As a further surprising advantage, it has been found that the consumption of the foaming agent according to the invention can be reduced by approx. 2056 in relation to a method where the silicone oil is added to the foaming agent. A foam that does not contain any silicone oil is thus added to the finished plaster mixture, for dissolution (Auflockerung) of this.
Undersøkelsen av den ferdige gipsplaten har vist at kvalite-ten av gipsplatene ifølge oppfinnelsen er fullstendig sammenlignbar med produkter hvor silikonoljen er tilsatt skummingsanlegget. The examination of the finished plasterboard has shown that the quality of the plasterboard according to the invention is completely comparable to products where the silicone oil has been added to the foaming system.
Utføringseksempel Execution example
I et stort anlegg for fremstilling av gipskartongplater ble det tidligere benyttet ca. 0,25 vekt-# silikonolje i forhold til den benyttede tørre gips, som ble tilsatt sammen med skummidlet og i form av skum, som ble blandet med vann og øvrige tilsetningsstoffer til den forhåndsfremstilte gipsmassen. Anlegget ble så omstilt til innmating av silikonoljen ved starten av det ca. 6 m lange tilledningsrø-ret for blandevannet. Diameteren var 5,1 cm, vannmengden var ca. 100 l/min. Det blir derved dannet en emulsjon som besto av silikonolje i vann. Blandingen ble umiddelbart blandet med tørt gipspulver, hvorved det ble dannet en gipsblandingen. Denne gipsblandingen blir bearbeidet for oppskumming med et på forhånd fremstilt skum av skummemiddel og vann og bearbeidet til gipskartongplater. Det ble tilsatt opp til 0,1 vekt-# ligninsulfonat som flytendegjøringsmiddel. Mengden silikonolje forble uforandret. Forbruket av skummemiddel i skummingsanlegget ble redusert med omkring 20%. De ferdige platene viste fullstendig sammenlignbare gode egenskaper. Vannopptaket etter 2 t var i alle tilfeller 9,0 ± 0,596. In a large plant for the production of plasterboard, approx. 0.25 weight-# of silicone oil in relation to the dry plaster used, which was added together with the foaming agent and in the form of foam, which was mixed with water and other additives to the pre-made plaster mass. The plant was then converted to feed in the silicone oil at the start of the approx. 6 m long supply pipe for the mixing water. The diameter was 5.1 cm, the amount of water was approx. 100 l/min. An emulsion consisting of silicone oil in water is thereby formed. The mixture was immediately mixed with dry gypsum powder, whereby a gypsum mixture was formed. This gypsum mixture is processed for foaming with a pre-made foam of foaming agent and water and processed into plasterboard sheets. Up to 0.1% by weight of lignin sulphonate was added as a liquefaction agent. The amount of silicone oil remained unchanged. The consumption of foaming agent in the foaming plant was reduced by around 20%. The finished boards showed completely comparable good properties. The water absorption after 2 h was in all cases 9.0 ± 0.596.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4128424A DE4128424A1 (en) | 1991-08-27 | 1991-08-27 | METHOD FOR THE PRODUCTION OF WATER REPELLENT POROUS PLASTER MOLDED BODIES |
| PCT/EP1992/001944 WO1993004009A1 (en) | 1991-08-27 | 1992-08-25 | Process for producing water-repellent, porous plaster moulded bodies |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO940615D0 NO940615D0 (en) | 1994-02-23 |
| NO940615L NO940615L (en) | 1994-02-23 |
| NO311756B1 true NO311756B1 (en) | 2002-01-21 |
Family
ID=6439243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19940615A NO311756B1 (en) | 1991-08-27 | 1994-02-23 | Process for preparing water repellent porous plaster molds |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0601007B2 (en) |
| JP (1) | JP3314931B2 (en) |
| AT (1) | ATE128444T1 (en) |
| CA (1) | CA2116443A1 (en) |
| DE (2) | DE4128424A1 (en) |
| DK (1) | DK0601007T3 (en) |
| ES (1) | ES2077430T5 (en) |
| FI (1) | FI114461B (en) |
| NO (1) | NO311756B1 (en) |
| WO (1) | WO1993004009A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19837170A1 (en) * | 1998-08-17 | 2000-02-24 | Dennert Kg Veit | Hydrophobic mineral insulation board and process for its production |
| CA2327430A1 (en) * | 1999-12-30 | 2001-06-30 | United States Gypsum Company | Application of polymethylhydrogen siloxane for producing a water resistant gypsum product and gypsum/wood fiber board and gypsum board |
| DE10003495C2 (en) | 2000-01-27 | 2003-04-03 | Wacker Polymer Systems Gmbh | Hydrophobing agent for the hydrophobization of gypsum-bound building materials, process for its production and its use |
| DE10060992C2 (en) * | 2000-11-11 | 2003-02-20 | Arwed Biedermann Fassadenrenov | Stucco component for building facades |
| FR2826360B1 (en) * | 2001-06-21 | 2003-10-17 | Strasservil Erovente S A | NOVEL HEMP CONCRETE AND MORTARS, THEIR PREPARATION PROCESS AND THEIR APPLICATIONS |
| US7892472B2 (en) | 2004-08-12 | 2011-02-22 | United States Gypsum Company | Method of making water-resistant gypsum-based article |
| FR2897863B1 (en) * | 2006-02-28 | 2008-07-11 | Bpb Plc | METHOD OF HYDROFUGATING A GYPSUM-BASED PRODUCT FROM A PLASTER-BASED COMPOSITION |
| US8070895B2 (en) | 2007-02-12 | 2011-12-06 | United States Gypsum Company | Water resistant cementitious article and method for preparing same |
| DE102007062773A1 (en) | 2007-12-27 | 2009-07-02 | Baerlocher Gmbh | Hydrophobic binder mixture and building materials made therefrom |
| US8329308B2 (en) | 2009-03-31 | 2012-12-11 | United States Gypsum Company | Cementitious article and method for preparing the same |
| EP3393995B1 (en) * | 2015-12-22 | 2024-05-29 | Knauf Gips KG | Method for porosification of construction materials using siloxanes and porosified building materials |
| US10829505B2 (en) | 2016-04-20 | 2020-11-10 | Dow Silicones Corporation | Lithium alkylsiliconate composition, coating, and method of making same |
| KR102072498B1 (en) * | 2018-08-23 | 2020-02-03 | 백혜나 | Gypsum Paste for Crafts, Method for Production Thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1389508A (en) * | 1973-09-17 | 1975-04-03 | Apv Co Ltd | Turbulence promoting devices |
| DE3429311C1 (en) * | 1984-08-09 | 1985-12-05 | Bayer Ag, 5090 Leverkusen | Process for the production of water-repellent porous molded body from plaster |
| JPS6242728A (en) * | 1985-08-14 | 1987-02-24 | Ono Bankin Kogyosho:Kk | Fluid mixer |
| DE3704439A1 (en) * | 1987-02-12 | 1988-08-25 | Wacker Chemie Gmbh | METHOD FOR PRODUCING WATER-REPELLENT OBJECTS FROM PLASTER AND HYDROPHOBIC AGENTS CONTAINING PLASTER POWDER |
| US5135805A (en) * | 1990-07-27 | 1992-08-04 | Georgia-Pacific Corporation | Method of manufacturing a water-resistant gypsum composition |
-
1991
- 1991-08-27 DE DE4128424A patent/DE4128424A1/en not_active Withdrawn
-
1992
- 1992-08-25 WO PCT/EP1992/001944 patent/WO1993004009A1/en active IP Right Grant
- 1992-08-25 DE DE59203860T patent/DE59203860D1/en not_active Expired - Fee Related
- 1992-08-25 CA CA 2116443 patent/CA2116443A1/en not_active Abandoned
- 1992-08-25 AT AT92918205T patent/ATE128444T1/en not_active IP Right Cessation
- 1992-08-25 EP EP19920918205 patent/EP0601007B2/en not_active Expired - Lifetime
- 1992-08-25 ES ES92918205T patent/ES2077430T5/en not_active Expired - Lifetime
- 1992-08-25 JP JP50413293A patent/JP3314931B2/en not_active Expired - Lifetime
- 1992-08-25 DK DK92918205T patent/DK0601007T3/en active
-
1994
- 1994-02-23 NO NO19940615A patent/NO311756B1/en not_active IP Right Cessation
- 1994-02-24 FI FI940868A patent/FI114461B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| EP0601007B2 (en) | 2003-03-12 |
| FI114461B (en) | 2004-10-29 |
| NO940615D0 (en) | 1994-02-23 |
| DE59203860D1 (en) | 1995-11-02 |
| FI940868A (en) | 1994-02-24 |
| DK0601007T3 (en) | 1996-02-05 |
| ES2077430T5 (en) | 2003-11-16 |
| ATE128444T1 (en) | 1995-10-15 |
| JP3314931B2 (en) | 2002-08-19 |
| CA2116443A1 (en) | 1993-03-04 |
| DE4128424A1 (en) | 1993-03-04 |
| EP0601007A1 (en) | 1994-06-15 |
| ES2077430T3 (en) | 1995-11-16 |
| JPH06510269A (en) | 1994-11-17 |
| NO940615L (en) | 1994-02-23 |
| FI940868A0 (en) | 1994-02-24 |
| EP0601007B1 (en) | 1995-09-27 |
| WO1993004009A1 (en) | 1993-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO311756B1 (en) | Process for preparing water repellent porous plaster molds | |
| US5643510A (en) | Producing foamed gypsum board using a foaming agent blend | |
| US4518652A (en) | Method for forming a lightweight cementitious structural product and product formed thereby | |
| CA1255078A (en) | Production of water-repellent moldings from plaster | |
| NO340936B1 (en) | Process for accelerating the solidification reaction of calcium sulphate semi-hydrate and water, and apparatus for producing a drywall panel | |
| CN109790077B (en) | Method for preparing lightweight gypsum compositions with internally generated foam and products prepared therefrom | |
| US11161783B2 (en) | Struvite-K and syngenite composition for use in building materials | |
| KR20190035747A (en) | Method for manufacturing gypsum board having polymer coating and gypsum board manufactured by the method | |
| US20030010419A1 (en) | Method of providing void spaces in gypsum wallboard and in a gypsum core composition | |
| US20090010093A1 (en) | Method of Adding STMP to a Gypsum Slurry | |
| AU2015334858B2 (en) | Method for producing a prefabricated building material | |
| US10464851B2 (en) | Method for treating gypsum | |
| EP1560800B1 (en) | Gypsum product and method therefor | |
| RU2683837C2 (en) | Struvite-k and syngenite composition for use in building materials | |
| EP3152181B1 (en) | Method for producing ultra-light mineral foam | |
| WO2015079835A1 (en) | Gypsum slurry, hardened gypsum body, gypsum-based building material, gypsum board, process for manufacturing gypsum slurry, process for manufacturing hardened gypsum body, process for manufacturing gypsum-based building material, and process for manufacturing gypsum board | |
| EA037830B1 (en) | Method for porosification of construction materials using siloxanes and porosified building materials | |
| US20230002287A1 (en) | Foamed Liquefiers in Gypsum Boards | |
| SU1677030A1 (en) | Method of foam generation | |
| RU2095333C1 (en) | Method of manufacturing products from foam-concrete mix | |
| NO791998L (en) | PROCEDURE FOR MAKING A PLASTERBOARD | |
| RU1792929C (en) | Method and equipment for continuous production of concrete articles | |
| SU1031941A1 (en) | Raw mix for making porous building products | |
| FI57967B (en) | SAETT ATT FRAMSTAELLA STAERKELSEBINDEMEDEL | |
| NO136978B (en) | PROCEDURE FOR MAKING 4- (1-ALKYL-4-PIPERIDYLIDENE) -4H-BENZO (4,5) CYCLOHEPTA (1,2-B) -TIOFEN-10 (9H) -ON COMPOUNDS. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM1K | Lapsed by not paying the annual fees |