DE3140808A1 - Flowable moulding sand and core sand with organic hardeners - Google Patents
Flowable moulding sand and core sand with organic hardenersInfo
- Publication number
- DE3140808A1 DE3140808A1 DE19813140808 DE3140808A DE3140808A1 DE 3140808 A1 DE3140808 A1 DE 3140808A1 DE 19813140808 DE19813140808 DE 19813140808 DE 3140808 A DE3140808 A DE 3140808A DE 3140808 A1 DE3140808 A1 DE 3140808A1
- Authority
- DE
- Germany
- Prior art keywords
- sulfates
- core sand
- weight
- sand
- flowable molding
- 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.)
- Granted
Links
- 239000004576 sand Substances 0.000 title claims abstract description 25
- 238000000465 moulding Methods 0.000 title claims abstract description 19
- 230000009969 flowable effect Effects 0.000 title claims abstract description 17
- 239000004848 polyfunctional curative Substances 0.000 title claims abstract description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003599 detergent Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000005187 foaming Methods 0.000 claims abstract description 5
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 5
- 239000004094 surface-active agent Substances 0.000 claims abstract description 5
- 150000002148 esters Chemical class 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 27
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 14
- 239000004088 foaming agent Substances 0.000 claims description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 9
- 239000004115 Sodium Silicate Substances 0.000 claims description 8
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 8
- -1 unsaturated ethoxy alcohols Chemical class 0.000 claims description 8
- 239000006004 Quartz sand Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 150000001298 alcohols Chemical class 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 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 3
- 150000003871 sulfonates Chemical class 0.000 claims description 2
- 150000008051 alkyl sulfates Chemical class 0.000 claims 2
- 150000008055 alkyl aryl sulfonates Chemical class 0.000 claims 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 1
- UDHMTPILEWBIQI-UHFFFAOYSA-N butyl naphthalene-1-sulfonate;sodium Chemical compound [Na].C1=CC=C2C(S(=O)(=O)OCCCC)=CC=CC2=C1 UDHMTPILEWBIQI-UHFFFAOYSA-N 0.000 abstract description 7
- 239000006260 foam Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 description 9
- 230000035699 permeability Effects 0.000 description 6
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 description 4
- 239000003110 molding sand Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- HXDLWJWIAHWIKI-UHFFFAOYSA-N 2-hydroxyethyl acetate Chemical compound CC(=O)OCCO HXDLWJWIAHWIKI-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000008050 dialkyl sulfates Chemical class 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- ASEFUFIKYOCPIJ-UHFFFAOYSA-M sodium;2-dodecoxyethyl sulfate Chemical compound [Na+].CCCCCCCCCCCCOCCOS([O-])(=O)=O ASEFUFIKYOCPIJ-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
- B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
- B22C1/188—Alkali metal silicates
-
- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
Abstract
Description
Die Erfindung betrifft einen fließfähigen Form- und Kernsand,The invention relates to a flowable molding and core sand,
der aus Quarzsand, Natriumsilikat und Wasser besteht.which consists of quartz sand, sodium silicate and water.
Die bisher zum Einsatz kommenden, fließfähigen Form- und Kernsande, welche in ihrer Zusammensetzung ein Bindemittel in Form von Natriumsilikat enthalten, sind mit Pulverstoffen gehärtet, deren Hauptkomponente Gamma- Dikalziumorthosilikat bildet.The flowable molding and core sands that have been used up to now, which contain a binder in the form of sodium silicate in their composition, are hardened with powder substances, the main component of which is gamma-dicalcium orthosilicate forms.
Die fließfähige Konsistenz dieser Sande wird durch Zugabe von oberflächenaktiven Mitteln, meistens Anionenmitteln, erzielt.The flowable consistency of these sands is made possible by the addition of surface-active substances Agents, mostly anion agents, achieved.
Eine der grundsätzlichen Nachteile der gegenwärtig angewandten Sande ist deren unzufriedenstellende Ausleerbarkeit aus den Gußstücken oder Formkästen, was eine zusätzliche Anwendung von Auflösungsmitteln erfordert, welche nicht immer wirksam sind, den Produktionsprozeß hingegen komplizieren. Außer der erschwerten Ausleerbarkeit, welche arbeitsaufwändige Maßnahmen beim Putzen der Gußstücke erforderlich macht, tritt bei der Anwendung von Pulverhärtern gemäß der bekannten Technologie eine starke, eine Bedrohung der Gesundheit der in der Formerei arbeitenden Arbeitskräfte durch Staubentwicklung auf.One of the fundamental disadvantages of the sands currently in use is their unsatisfactory emptying from the castings or molding boxes, which requires additional application of dissolving agents, which not always are effective, but complicate the production process. Except the difficult one Emptying, which labor-intensive measures are required when cleaning the castings power occurs when using powder hardeners according to known technology a severe threat to the health of the workers in the molding shop due to the development of dust.
Für Beschränkung oder Beseitigung der oben angeführten, durch die Pulverhärtemittel verursachten Nachteile, ist die Verwendung von flüssigen, organischen Härtemitteln vorgeschlagen worden. Die hydrophoben Eigenschaften der organischen Härter führen jedoch eine erhebliche Minderung der Aufschäumfähigkeit der zur Fließfähigmachung von Formsanden benutzten Schaumbildner herbei.For the limitation or elimination of the above, by the Powder hardeners caused disadvantages, is the use of liquid, organic Hardening agents have been proposed. The hydrophobic properties of the organic However, hardeners lead to a considerable reduction in the foamability of the fluidization foaming agents used by molding sands.
Beispielsweise, weist ein Formsand, der unter Verwendung von Natriumbutylnaphthalinsulfonat, als ein Schaummittel, und einem flüssigen Härtungsmittel in Form von Glykoldiazetat hergestellt ist, keine Dünnflüssigkeit und damit Gießbarkeit auf, da hydrophobes Polyalkoholazetat ein Löschen des Schaumes bewirkt. Deshalb, haben die organischen Härtungsmittel des Typs von Estern der Essigsäure und Polyalkohole bisher nur für Pulverform- und -kernsande ihren Einsatz gefunden (Polnische~Patentanmeldung Nr. P-194640).For example, a molding sand made using sodium butylnaphthalene sulfonate, as a foaming agent, and a liquid curing agent in the form of glycol diacetate is made, no thin liquid and thus pourability, as hydrophobic Polyalcohol acetate causes the foam to be extinguished. Therefore, have the organic Hardeners of the type of esters of acetic acid and polyalcohols so far only for Powder molding and core sands found their use (Polish patent application no. P-194640).
In durchgeführten Versuchen über die Anwendung von oberflächenaktiven Mitteln, wie Natriumdodezylbenzolsulfonsäureäthylester oder nichtionogene oberflächenaktive Mittel mit erhöhter Schaumbildungsfähigkeit und die zu einer hohen Stabilität des Schaums führen, im Medium von Natriumsilikat, mit Zugabe von organischen Härtungsmitteln des Typs von Glykolazetaten, wurden zwar Sande mit guter Fließfähigkeit und Festigkeit, jedoch mit sehr niedriger Durchlässigkeit des Sands nach dessen Aushärten erzielt.In experiments carried out on the application of surface-active Agents such as ethyl sodium dodecylbenzenesulfonate or nonionic surface-active agents Agent with increased foaming ability and which leads to a high stability of the Foam in the medium of sodium silicate, with the addition of organic hardeners of the glycol acetate type, sands with good flowability and strength, but achieved with very low permeability of the sand after it has hardened.
Der Erfindung liegt die Aufgabe zugrunde, einen fließfähigen Formsand zu schaffen, der sich durch lange Brauchbarkeit, gute Gießbarkeit, hohe Festigkeit, geringe Staubentwicklung und leichte Entfernung aus dem Formteil auszeichnet.The invention is based on the object of a flowable molding sand to create, which is characterized by long usefulness, good castability, high strength, characterized by low dust generation and easy removal from the molded part.
Zur Lösung dieser Aufgabe lehrt die Erfindung, daß der Formsand als flüssiges, organisches Härtemittel Ester der Essigsäure und Polyalkohole in einer Menge von 0,1...2 Gew.-Teilen, und als Schaumbildner eine Komposition von oberflächenaktiven Mitteln, wie Natriumbutylnaphtahlinsulfonat, in einer Menge von 0,2...1,0 Gew.-Teilen, mit Zugabe von stark schaumbildenden Detergentien in einer Menge von 0,1...1,0 Gew.-Teilen enthält, wobei hier vorteilhafte Dialkylsulfate und Arylalkylsulfonate, Äthoxyalkylsulfate, Sulfate Von ungesättigten Alkoholen und Sulfate von ungesättigten Athoxyalkoholen, Sulfate von äthoxylierten Alkylphenolen, nichtionogene oberflächenaktive Mittel angewandt werden.To solve this problem, the invention teaches that the molding sand as liquid, organic hardener, ester of acetic acid and polyalcohol in one Amount of 0.1 ... 2 parts by weight, and as a foaming agent a composition of surface-active substances Agents, such as sodium butylnaphtahlinsulfonate, in an amount of 0.2 ... 1.0 parts by weight, with the addition of strongly foaming detergents in an amount of 0.1 ... 1.0 Parts by weight contains, with advantageous dialkyl sulfates and arylalkyl sulfonates, ethoxyalkyl sulfates, Sulphates of unsaturated alcohols and sulphates of unsaturated ethoxy alcohols, Sulfates of ethoxylated alkyl phenols, nonionic surfactants can be applied.
Erst die Verwendung einer Mehrkomponentenkomposition der oberflächenaktiven Mittel, welche zugleich einen sich durch rasches Löschen des Schaums kennzeichnenden Schaumbildner, des Typs von Natriumbutylnaphthalinsulfonat, sowie eine Zugabe von Schaumbildnern mit erhöhter Schaumbildungsfähigkeit aufweist, führen nach der Erfindung zu Formsanden mit sehr langer Brauchbarkeit, sehr guter Gießbarkeit, hoher Festigkeit und sehr guter Durchlässigkeit.Only the use of a multi-component composition of the surface-active Means, which at the same time are characterized by the rapid extinguishing of the foam Foaming agent, of the type of sodium butylnaphthalene sulfonate, as well as an addition of Has foaming agents with increased foaming capacity, lead according to the invention to molding sands with a very long useful life, very good castability, high strength and very good permeability.
Zweckmäßig enthält der fließfähige Formsand als zusätzliche Detergentien eine Mischung von Dulfonaten, Alkyl- und Athoxyalkylsulfaten, Sulfaten von ungesättigten Alkoholen und ungesättigten Athoxyalkoholen sowie von nichtionogenen, oberflächenaktiven Mitteln.The flowable molding sand expediently contains additional detergents a mixture of sulfonates, alkyl and ethoxyalkyl sulfates, sulfates of unsaturated Alcohols and unsaturated ethoxy alcohols as well as nonionic, surface-active Means.
Nach der Erfindung wird eine vorteilhafte Verkürzung der Bindezeit von Sanden durch die flüssigen, organischen Härtungsmittel erreicht. Ferner werden die Eigenschaften und die Gießbarkeit der Form- und Kernsande durch die Wahl von Detergentien und deren Mischungen, die zur Herstellung von Gießformen undkernen dienen, verbessert.According to the invention, an advantageous shortening of the binding time of sands achieved by the liquid, organic hardening agent. Further be the properties and pourability of the molding and core sands through the choice of Detergents and their mixtures used in the manufacture of casting molds and cores serve, improved.
Beispiele von flüssigen Form- und Kerns anden und deren Eigenschaften: Beispiel I: Zusammensetzung des Sandes: Quarzsand 100 Gew -Teile Natriumsilikat/Wasserglas/ 5 Gew.-Teile Wasser 2 Gew.-Teile Äthylenglykoldiazetat 0,5 Gew.-Teile Schaumbildner: Natriumbutylnaphthalinsulfonat 0,5 Gew.-Teile Natriumlaurylsulfat 0,4 GewO-Teile Eigenschaften des Sandes: Gießbarkeit 20 cm Gebrauchsdauer 5 min Binde zeit 30 min Druckfestigkeit nach 1 Stunde 5 10 8 MPa nach 24 Stunden 17 10-8 MPa Durchlässigkeit nach 1 Stunde 600 10-8 m4/N.s Beispiel II: Zusammensetzung des Sandes: Quarzsand 100 Gew.-Teile Natriumsilikat 5 GewO-Teile Wasser 2 Gew.-Teile Athylenglykoldiazetat 05 5 Gew.-Teile Schaumbildner: Natriumbutylnaphthalinsulfonat 0,5 Gew.-Teile Natriumlauryläthoxysulfat 0.2 Gew.-Teile Natriumlaurylsulfat G 2 Gew.-Teile Eigenschaften des Sandes: Gießbarkeit 20 cm Gebrauchsdauer 7 min Bindezeit 35 min Druckfestigkeit nach 1 Stunde 6 10-1 MPa nach 24 Stunden 18 10-1 MPa Durchlässigkeit nach 1 Stunds 540 10-8 m4/N.s nach 24 Stunden 750 10-8 m4/N.s Beispiel III: Zusammensetzung des Sandes: Quarzsand 100 Gew.-Teile Natriumsilikat 5 Gew.-Teile Wasser 0 2 Gew.-Teile Äthylenglykoldiazetat 0,5 Gew.-Teile Schaumbildner: Natriumbutylnaphthalinsulfonat 0,5 Gew.-Teile Sulfate ungesättigter Alkohole 0,2 Gew.-Teile Sulfate äthoxylierter Alkylphenole 0,2 Gew.-Teile Eigenschaften des Sandes: Gießbarkeit 18 cm Gebrauchsdauer 6 min Bindezeit 35 min Druckfestigkeit nach 1 Stunde 6 10-1 MPa nach 24 Stunden 18 10-1 MPa Durchlässigkeit nach 1 Stunde 10-8 m4/N.s Beispiel IV: Zusammensetzung des Sandes: Quarzsand 100 Gew.-Teile Natriumsilikat 5 Gew.-Teile Wasser 2 Gew.-Teile Äthylenglykoldiazetat 0,5 Gew.-Teile Schaumbildner: Natriumbutylnaphthalinsulfonat 0,5 Gew.-Teile äthoxylierte Alkylphenole 0,1 Gew.-Teile Natriumalkylbenzolsulfonat 0,1 Gew-Teile Natriumalkylsulfat 0,2 Gew.-Teile Eigenschaften des Sandes: Gießbarkeit 20 cm Gebrauchsdauer 5 min Bindezeit 30 min Druckfestigkeit nach 1 Stunde 4 10 1 MPa nach 24 Stunden 16 101 MPa Durchlässigkeit nach 1 Stunde 300 10-8-8 m44/N.s nach 24 Stunden 650 10 m /Noe Darüber hinaus verbessert das Ersetzen der anorganischen Härtungsmittel mit den organischen das Entfernen des Sandes nach dem Abgießen beträchtlich. Beispielsweise beträgt die Ausleerungsarbeit von ausgebrannten selbsthärtenden Sanden mit einem anorganischen Härtungsmittel 22...28 J, im Falle von fließfähigen Sanden mit organischem Härtungsmittel wird diese auf 9...14 J reduziert.Examples of liquid mold and core sand and their properties: example I: Composition of the sand: quartz sand 100 parts by weight sodium silicate / water glass / 5 parts by weight water 2 parts by weight ethylene glycol diacetate 0.5 parts by weight foaming agent: Sodium butylnaphthalene sulfonate 0.5 part by weight sodium lauryl sulfate 0.4 part by weight Properties of the sand: pourability 20 cm, use time 5 min, binding time 30 min Compressive strength after 1 hour 5 10 8 MPa after 24 hours 17 10-8 MPa permeability after 1 hour 600 10-8 m4 / N.s Example II: Composition of the sand: quartz sand 100 parts by weight of sodium silicate 5 parts by weight of water 2 parts by weight of ethylene glycol diacetate 05 5 parts by weight foaming agent: sodium butylnaphthalene sulfonate 0.5 part by weight sodium lauryl ethoxysulfate 0.2 part by weight of sodium lauryl sulfate G 2 parts by weight properties of the sand: pourability 20 cm, service life 7 min, binding time 35 min compressive strength after 1 hour 6 10-1 MPa after 24 hours 18 10-1 MPa permeability after 1 hour 540 10-8 m4 / N.s after 24 hours 750 10-8 m4 / N.s Example III: Composition of the Sand: quartz sand 100 parts by weight sodium silicate 5 parts by weight water 0 2 parts by weight Ethylene glycol acetate 0.5 part by weight foaming agent: sodium butylnaphthalene sulfonate 0.5 part by weight of sulfates of unsaturated alcohols, 0.2 part by weight of ethoxylated sulfates Alkylphenols 0.2 parts by weight Properties of the sand: Pourability 18 cm service life 6 min binding time 35 min compressive strength after 1 hour 6 10-1 MPa after 24 hours 18 10-1 MPa permeability after 1 hour 10-8 m4 / N.s example IV: Composition of the sand: quartz sand 100 parts by weight sodium silicate 5 parts by weight Water 2 parts by weight ethylene glycol diacetate 0.5 part by weight foaming agent: sodium butylnaphthalene sulfonate 0.5 part by weight of ethoxylated alkylphenols 0.1 part by weight of sodium alkylbenzenesulfonate 0.1 part by weight sodium alkyl sulfate 0.2 part by weight Properties of the sand: Pourability 20 cm service life 5 min binding time 30 min compressive strength after 1 hour 4 10 1 MPa after 24 hours 16 101 MPa permeability after 1 hour 300 10-8-8 m44 / N.s after 24 hours 650 10 m / Noe In addition, the replacement of the inorganic improves Hardening agent with the organic removing the sand after pouring considerably. For example, the work of emptying burnt out self-hardening sands is with an inorganic hardener 22 ... 28 J, in the case of flowable sands with organic hardener this is reduced to 9 ... 14 J.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813140808 DE3140808C2 (en) | 1981-10-14 | 1981-10-14 | Flowable molding and core sand with organic hardeners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813140808 DE3140808C2 (en) | 1981-10-14 | 1981-10-14 | Flowable molding and core sand with organic hardeners |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3140808A1 true DE3140808A1 (en) | 1983-04-28 |
| DE3140808C2 DE3140808C2 (en) | 1984-10-25 |
Family
ID=6144094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19813140808 Expired DE3140808C2 (en) | 1981-10-14 | 1981-10-14 | Flowable molding and core sand with organic hardeners |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3140808C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2128110A1 (en) * | 2008-05-29 | 2009-12-02 | Sika Technology AG | Additive for hydraulic bonding agent with long processing time and high early stability |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62212254A (en) * | 1986-03-12 | 1987-09-18 | 而至歯科工業株式会社 | Low-dust powdery dental filling composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1902328A1 (en) * | 1968-01-26 | 1969-09-11 | Ministerstwo Przemyslo Ciezkie | Process for the production of self-adhesive compounds |
| DE2233667A1 (en) * | 1971-07-09 | 1973-01-25 | Foseco Trading Ag | CURING MIXTURES OF ALKALINE SILICATE AND REFRACTORY MATERIAL |
| DE2024861B2 (en) * | 1966-06-02 | 1978-10-19 | The British Cast Iron Research Association, Birmingham (Grossbritannien) | Casting mold or core mass |
-
1981
- 1981-10-14 DE DE19813140808 patent/DE3140808C2/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2024861B2 (en) * | 1966-06-02 | 1978-10-19 | The British Cast Iron Research Association, Birmingham (Grossbritannien) | Casting mold or core mass |
| DE1902328A1 (en) * | 1968-01-26 | 1969-09-11 | Ministerstwo Przemyslo Ciezkie | Process for the production of self-adhesive compounds |
| DE2233667A1 (en) * | 1971-07-09 | 1973-01-25 | Foseco Trading Ag | CURING MIXTURES OF ALKALINE SILICATE AND REFRACTORY MATERIAL |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2128110A1 (en) * | 2008-05-29 | 2009-12-02 | Sika Technology AG | Additive for hydraulic bonding agent with long processing time and high early stability |
| WO2009144293A1 (en) * | 2008-05-29 | 2009-12-03 | Sika Technology Ag | Additive for hydraulic binding agent with long processing time and high early strength |
| US8092592B2 (en) | 2008-05-29 | 2012-01-10 | Sika Technology Ag | Additive for hydraulic binding agent with long processing time and high early strength |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3140808C2 (en) | 1984-10-25 |
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