DE2551308B2 - Verfahren zur Herstellung von Calciumaluminattrisulfathydrat - Google Patents
Verfahren zur Herstellung von CalciumaluminattrisulfathydratInfo
- Publication number
- DE2551308B2 DE2551308B2 DE2551308A DE2551308A DE2551308B2 DE 2551308 B2 DE2551308 B2 DE 2551308B2 DE 2551308 A DE2551308 A DE 2551308A DE 2551308 A DE2551308 A DE 2551308A DE 2551308 B2 DE2551308 B2 DE 2551308B2
- Authority
- DE
- Germany
- Prior art keywords
- caso
- water
- cao
- tsh
- reaction
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- CJONZFZTOGYADY-UHFFFAOYSA-N O.OS(O)(=O)=O.OS(O)(=O)=O.OS(O)(=O)=O Chemical compound O.OS(O)(=O)=O.OS(O)(=O)=O.OS(O)(=O)=O CJONZFZTOGYADY-UHFFFAOYSA-N 0.000 title claims 2
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 238000006243 chemical reaction Methods 0.000 claims description 32
- 239000000292 calcium oxide Substances 0.000 claims description 30
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 24
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 10
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 2
- 108010010803 Gelatin Proteins 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 239000008273 gelatin Substances 0.000 claims description 2
- 229920000159 gelatin Polymers 0.000 claims description 2
- 235000019322 gelatine Nutrition 0.000 claims description 2
- 235000011852 gelatine desserts Nutrition 0.000 claims description 2
- 239000000174 gluconic acid Substances 0.000 claims description 2
- 235000012208 gluconic acid Nutrition 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- WPUINVXKIPAAHK-UHFFFAOYSA-N aluminum;potassium;oxygen(2-) Chemical compound [O-2].[O-2].[Al+3].[K+] WPUINVXKIPAAHK-UHFFFAOYSA-N 0.000 claims 1
- 229910052925 anhydrite Inorganic materials 0.000 claims 1
- XPFJYKARVSSRHE-UHFFFAOYSA-K trisodium;2-hydroxypropane-1,2,3-tricarboxylate;2-hydroxypropane-1,2,3-tricarboxylic acid Chemical compound [Na+].[Na+].[Na+].OC(=O)CC(O)(C(O)=O)CC(O)=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O XPFJYKARVSSRHE-UHFFFAOYSA-K 0.000 claims 1
- 239000000047 product Substances 0.000 description 45
- 239000000203 mixture Substances 0.000 description 36
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 24
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 22
- 239000002002 slurry Substances 0.000 description 18
- 239000010440 gypsum Substances 0.000 description 14
- 229910052602 gypsum Inorganic materials 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 13
- 238000006703 hydration reaction Methods 0.000 description 10
- 238000002441 X-ray diffraction Methods 0.000 description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 8
- 150000004683 dihydrates Chemical class 0.000 description 8
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000004580 weight loss Effects 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000011505 plaster Substances 0.000 description 3
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 2
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- -1 aromatic carboxylic acids Chemical class 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000010303 mechanochemical reaction Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 239000001509 sodium citrate Substances 0.000 description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 2
- 239000000176 sodium gluconate Substances 0.000 description 2
- 235000012207 sodium gluconate Nutrition 0.000 description 2
- 229940005574 sodium gluconate Drugs 0.000 description 2
- 101100391181 Dictyostelium discoideum forH gene Proteins 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 102100029530 Thyrotropin subunit beta Human genes 0.000 description 1
- 101710087584 Thyrotropin subunit beta Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
- C01F7/76—Double salts, i.e. compounds containing, besides aluminium and sulfate ions, only other cations, e.g. alums
- C01F7/767—Alkaline earth metal aluminium sulfates
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
- C04B7/323—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49132187A JPS5157693A (en) | 1974-11-15 | 1974-11-15 | Mukishitsuzairyono seiho |
| JP49133061A JPS5159094A (en) | 1974-11-18 | 1974-11-18 | Mukishitsuzairyono seiho |
| JP49142352A JPS5168625A (en) | 1974-12-10 | 1974-12-10 | Mukikeikokataino seiho |
| JP5179775A JPS51127117A (en) | 1975-04-29 | 1975-04-29 | Production method of inorganic cured object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2551308A1 DE2551308A1 (de) | 1976-05-26 |
| DE2551308B2 true DE2551308B2 (de) | 1980-02-21 |
Family
ID=27462692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2551308A Ceased DE2551308B2 (de) | 1974-11-15 | 1975-11-14 | Verfahren zur Herstellung von Calciumaluminattrisulfathydrat |
Country Status (5)
| Country | Link |
|---|---|
| BR (1) | BR7507544A (enExample) |
| CA (1) | CA1070478A (enExample) |
| DE (1) | DE2551308B2 (enExample) |
| FR (1) | FR2291153A1 (enExample) |
| GB (1) | GB1535208A (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2900613A1 (de) * | 1979-01-09 | 1980-07-10 | Mitsubishi Mining & Cement Co | Verfahren zur herstellung eines faserverstaerkten ausgehaerteten formkoerpers des gipssystems und das dabei erhaltene produkt |
| DE2949390A1 (de) * | 1978-12-26 | 1980-07-17 | Matsushita Electric Works Ltd | Zusammensetzung zur bildung eines anorganischen gehaerteten produkts und verfahren zur herstellung von gehaerteten produkten daraus |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53137093A (en) * | 1977-03-15 | 1978-11-30 | Hiyougoken | Method of synthesizing ettringite |
| US4255398A (en) * | 1977-03-15 | 1981-03-10 | Hyogo Prefectural Government Of Japan | Novel ettringite whiskers, production and uses |
| DE2965242D1 (en) * | 1978-06-22 | 1983-05-26 | Kubota Ltd | Process for producing tobermorite and ettringite |
| FR2832401B1 (fr) * | 2001-11-19 | 2004-12-10 | Carrieres Du Boulonnais | Ciment blanc, procede et installation de fabrication |
| GB2586951B (en) * | 2019-06-12 | 2024-01-31 | Ardex Group Gmbh | A method and apparatus for processing water treatment residuals |
-
1975
- 1975-11-14 DE DE2551308A patent/DE2551308B2/de not_active Ceased
- 1975-11-14 GB GB47007/75A patent/GB1535208A/en not_active Expired
- 1975-11-14 BR BR7507544*A patent/BR7507544A/pt unknown
- 1975-11-17 FR FR7535060A patent/FR2291153A1/fr active Granted
- 1975-11-17 CA CA239,933A patent/CA1070478A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2949390A1 (de) * | 1978-12-26 | 1980-07-17 | Matsushita Electric Works Ltd | Zusammensetzung zur bildung eines anorganischen gehaerteten produkts und verfahren zur herstellung von gehaerteten produkten daraus |
| DE2900613A1 (de) * | 1979-01-09 | 1980-07-10 | Mitsubishi Mining & Cement Co | Verfahren zur herstellung eines faserverstaerkten ausgehaerteten formkoerpers des gipssystems und das dabei erhaltene produkt |
Also Published As
| Publication number | Publication date |
|---|---|
| BR7507544A (pt) | 1976-08-10 |
| FR2291153A1 (fr) | 1976-06-11 |
| DE2551308A1 (de) | 1976-05-26 |
| FR2291153B1 (enExample) | 1980-05-30 |
| AU8667775A (en) | 1977-04-07 |
| CA1070478A (en) | 1980-01-29 |
| GB1535208A (en) | 1978-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1267160B (de) | Verfahren zur Herstellung von gegossenen Formkoerpern aus Gips | |
| DE2551140A1 (de) | Magnesiazementmischung auf basis von magnesiumoxid und einem mit diesem reaktionsfaehigen ammoniumphosphat | |
| DE3727907A1 (de) | Wiederaufbereitung von betonmischungen | |
| DE2922815C2 (de) | Sorel-Zementmasse | |
| GB1602645A (en) | Process of treating calcined gypsum | |
| DE3319017C2 (enExample) | ||
| DE2551308B2 (de) | Verfahren zur Herstellung von Calciumaluminattrisulfathydrat | |
| DE2551311C3 (de) | Verfahren zur Herstellung von hydrothermal gehärteten Massen, die Verstärkungsmittel enthalten und gegebenenfalls anschließend carbonisiert werden | |
| DE2949390C2 (de) | Härtbare Zusammensetzung zur Bildung von Ettringit (TSH), Zement, Gips, sowie bis zu 40 Gew.-% Fasermaterial enthaltenden Produkten | |
| DE2330728B2 (de) | Verfahren zur herstellung eines synthetischen anhydrits einheitlicher qualitaet und dessen verwendung | |
| DE2545244C3 (de) | Schnell zu hitzebeständigem Material härtendes Gemisch | |
| DE2836984C3 (de) | Selbsthärtende Formmasse für die Herstellung von Sandformen | |
| AT370387B (de) | Verfahren zur herstellung von calciumaluminat -trisulfathydrat, gegebenenfalls in mischung mit calciumaluminatmonosulfathydrat | |
| DE2739275C3 (de) | Calciumsulfatmaterial zur Herstellung von gehärteten Formkörpern | |
| DE2821014A1 (de) | Zementpraeparat | |
| US4076545A (en) | Process of producing calcium aluminate monosulfate hydrate | |
| DE3620284A1 (de) | Aus einem stueck bestehende feuerfeste masse | |
| DE2507010C3 (de) | Cyclopropantetracarbonsäure und deren Alkali-, Ammonium- und Erdalkalisalze in hydraulischen Zusammensetzungen | |
| EP1926692B1 (de) | Verfahren zur herstellung eines chromatreduzierers für zementzusammensetzungen | |
| EP0056163A1 (de) | Hochexpansionsgips | |
| JPH0753204A (ja) | リン酸カルシウム系自己硬化型組成物 | |
| AT370399B (de) | Baumaterial | |
| DE1224190B (de) | Verfahren zur Aufbereitung von synthetischem Gips | |
| DE3038242C2 (de) | Verfahren zur Herstellung von Monualuminiumorthophosphat | |
| AT393267B (de) | Wasserbestaendige sorel-zementzusammensetzung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8235 | Patent refused |