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DE1252853B - Binder for foundry sands - Google Patents

Binder for foundry sands

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Publication number
DE1252853B
DE1252853B DEK56485A DEK0056485A DE1252853B DE 1252853 B DE1252853 B DE 1252853B DE K56485 A DEK56485 A DE K56485A DE K0056485 A DEK0056485 A DE K0056485A DE 1252853 B DE1252853 B DE 1252853B
Authority
DE
Germany
Prior art keywords
resin
parts
silane
resins
amino
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.)
Pending
Application number
DEK56485A
Other languages
German (de)
Inventor
Dr Arno Mueller
Kurt Scholich
Guenter Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ARNO MUELLER DR
Original Assignee
ARNO MUELLER DR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ARNO MUELLER DR filed Critical ARNO MUELLER DR
Priority to DEK56485A priority Critical patent/DE1252853B/en
Priority to ES0328115A priority patent/ES328115A1/en
Priority to BE682865D priority patent/BE682865A/xx
Priority to GB27644/66A priority patent/GB1143351A/en
Priority to BR180737/66A priority patent/BR6680737D0/en
Priority to FR66861A priority patent/FR1484509A/en
Priority to NL6608856A priority patent/NL6608856A/xx
Publication of DE1252853B publication Critical patent/DE1252853B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/28—Chemically modified polycondensates
    • 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
    • B22C1/167—Mixtures of inorganic and organic binding agents
    • 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
    • B22C1/20—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 organic agents
    • B22C1/205—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 organic agents of organic silicon or metal compounds, other organometallic compounds
    • 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
    • B22C1/20—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 organic agents
    • B22C1/22—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 organic agents of resins or rosins
    • 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
    • B22C1/20—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 organic agents
    • B22C1/22—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 organic agents of resins or rosins
    • B22C1/2233—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 organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G16/00—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00
    • C08G16/02—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00 of aldehydes
    • C08G16/04—Chemically modified polycondensates

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)

Description

DEUTSCHES WTWWl· PATENTAMTGERMAN WTWWl PATENT OFFICE

AUSLEGESCHRIFT DeutscheKl.: 31 b1-1/22 EDITORIAL DEVELOPMENT German Cl .: 31 b1 -1/22

Nummer: 1 252 853Number: 1 252 853

Aktenzeichen: K 56485 VI a/31 b1File number: K 56485 VI a / 31 b1

1 252 853 Anmeldetag: 26. Juni 1965 1 252 853 filing date: June 26, 1965

Auslegetag: 26. Oktober 1967Opening day: October 26, 1967

Die vorliegende Erfindung betrifft die Herstellung von Kernen und Formen für Gießereizwecke unter Verwendung von Harzen als Bindemittel.The present invention relates to the manufacture of cores and molds for foundry purposes under Use of resins as binders.

Die Anwendung von Phenol-Formaldehyd-, Harnstoff- und Melaminharzen oder deren Modifikationen, insbesondere mit Furfurylalkohol als Bindemittel für den Gießereisand zur Herstellung von Gießereiformen und -kernen ist inzwischen auf weite Teile der Gießereien ausgedehnt worden. Derartige Bindemittel haben jedoch einige nachteilige Eigenschaften, die sich insbesondere beim Abguß auswirken. So treten bei mit Harnstoff- bzw. Harnstoff-Furan-Harz gebundenen Sanden im Gußstück immer wieder Pinholes und Gasblasen auf, die durch den schnellen Zerfall des Harzes und die dabei entstehenden großen Gasmengen hervorgerufen werden. Die Phenol-Formaldehyd-Harze dagegen verhalten sich in dieser Beziehung weit günstiger, ihrer Anwendung sind jedoch wiederum Grenzen gesetzt durch die geringe Endfestigkeit und Sprödigkeit der hiermit hergestellten Formen und Kerne, die während des Abgusses unter Umständen zum Bruch des Kernes oder der Form führen können. Auch ist während des Gießens eine sich durch die große Gasmenge stark auswirkende Geruchsbelästigung nicht vermeidbar.The use of phenol-formaldehyde, urea and melamine resins or their modifications, especially with furfuryl alcohol as a binding agent for the foundry sand for the production of foundry molds and cores has meanwhile been extended to large parts of the foundries. Such binders however, they have some disadvantageous properties which are particularly relevant during casting. So join Sands bound with urea or urea-furan resin in the casting consistently contain pinholes and gas bubbles, caused by the rapid disintegration of the resin and the large amounts of gas generated be evoked. The phenol-formaldehyde resins, on the other hand, behave in this Relationship far more favorable, but their application is again limited by the low final strength and brittleness of the molds and cores produced with it, which were under during the casting process Cause breakage of the core or the mold. There is also one during pouring unavoidable odor nuisance due to the large amount of gas.

Außerdem ist die Wirtschaftlichkeit dieser Harze nach wie vor zu bemängeln. Diese Nachteile treten insbesondere beim sogenannten Kalthärtungsverfahren auf. Diese Nachteile zu überwinden ist Aufgabe der vorliegenden Erfindung.In addition, the economy of these resins is still to be criticized. These disadvantages occur especially in the so-called cold hardening process. Overcoming these disadvantages is the task of the present invention.

Es wurde nun gefunden, daß man die vorbeschriebenen Nachteile dadurch überwinden kann, daß man bei der Herstellung von Kernen und Formen für Gießereizwecke im Kalthärtungsverfahren auf der Basis von Quarzsand u. dgl. als Bindemittel ein säurehärtbares Phenol-, Formaldehyd-, Harnstoff-, Melamin- oder Furfurylalkohol-Formaldehyd-Harz oder Mischprodukt aus diesen Harzen verwendet, das mit einer geringen Menge eines Silans der allgemeinen FormelIt has now been found that the above-described disadvantages can be overcome by in the production of cores and molds for foundry purposes in the cold hardening process on the Based on quartz sand and the like as a binder, an acid-hardenable phenol, formaldehyde, urea, Melamine or furfuryl alcohol-formaldehyde resin or a mixture of these resins is used with a small amount of a silane of the general formula

OROR

R' Si-OR
ORR 'Si-OR
OR

worin R' eine Alkylengruppe mit 2 bis 6 Kohlenstoffatomen ist, die mit einer Aminogruppe oder einer Amino-niederalkylaminogruppe, wie der Aminoäthylaminogruppe, endständig substituiert ist, und R eine niedere Alkylgruppe, wie die Methyl- oder Äthylgruppe, darstellt, modifiziert ist. Vorzugsweise werden solche Harze verwendet, die etwa 0,1 bis 3% des Bindemittel für Gießereisandewherein R 'is an alkylene group having 2 to 6 carbon atoms, those having an amino group or a Amino-lower alkylamino group, such as the aminoethylamino group, is terminally substituted, and R is a lower alkyl group, such as the methyl or ethyl group, is modified. Preferably be those resins are used that make up about 0.1 to 3% of the binder for foundry sands

Anmelder:Applicant:

Dr. Arno Müller, Hilden (Rhld.), Reisholzstr. 18Dr. Arno Müller, Hilden (Rhld.), Reisholzstr. 18th

Als Erfinder benannt:
Dr. Arno Müller, Hilden (Rhld.);
Günter Wagner, Düsseldorf;
Kurt Scholien, LangenfeldNamed as inventor:
Dr. Arno Müller, Hilden (Rhld.);
Günter Wagner, Düsseldorf;
Kurt Scholien, Langenfeld

genannten Silans enthalten. Dabei werden ganz besonders bevorzugt die unter Einsatz von Furfurylalkohol hergestellten Furanharze verwendet.contain mentioned silane. Those using furfuryl alcohol are very particularly preferred produced furan resins are used.

Es sind schon verschiedene organische Siliziumverbindungen zur Erhöhung der Festigkeit von Gießereikernen und -formen, die durch Erhitzen auf erhöhte Temperatur ausgehärtet werden, verwendet worden; in der USA.-Patentschrift 2 967 338 ist die Verwendung von teilweise hydrolysierten Trialkoxy- und Triacyloxy-alkylsilanen in Verbindung mit Kernölen beschrieben. Die USA.-Patentschrift 3 093 494 dagegen beschreibt die Verwendung solcher Produkte im Croning-Verfahren. Schließlich ist in der britischen Patentschrift 876 033 die Verwendung von erfindungsgemäß verwendeten Silanen im Heißhärtungsverfahren beschrieben. Für die Kalthärtung in Verbindung mit säurehärtbaren Harzen sind die Silane wegen ihrer bekannten leichten Hydrolysierbarkeit jedoch noch nicht verwendet worden.There are already various organic silicon compounds to increase the strength of Foundry cores and molds, which are hardened by heating to an elevated temperature, are used been; in U.S. Patent 2,967,338 is the use of partially hydrolyzed trialkoxy and triacyloxy-alkylsilanes in connection with kernel oils. U.S. Patent 3,093,494 however, describes the use of such products in the croning process. Finally is in the UK Patent specification 876 033 the use of silanes used according to the invention in the hot curing process described. For cold curing in connection with acid-curable resins, the silanes are because of their known ready hydrolyzability has not yet been used.

Durch die erfindungsgemäße Verwendung dieser Bindemittel wird bei den im Kalthärtungsverfahren hergestellten Kernen und Formen eine Steigerung der Kernfestigkeit von überraschend hohem Ausmaß, nämlich um etwa 100 bis etwa 400 °/0, erreicht, wodurch der Bindemittelanteil in der Formmasse um bis zu 50% gegenüber Iden bisher eingesetzten Harzen entsprechenden Typus ohne Festigkeitseinbuße reduziert werden kann. Hierdurch wird die beim Guß entstehende Gasmenge und damit gleichzeitig die Gefahr von Gußfehlern durch das Bindemittel wesentlich reduziert, die Geruchsbelästigung während des Gießens erheblich herabgesetzt, die Wirtschaftlichkeit erhöht und ein erhöhter AItsandzustand ermöglicht und hierdurch Neusand eingespart.The inventive use of these binders in the cores and molds produced in the cold curing process increases the core strength of a surprisingly high degree, namely by about 100 to about 400 ° / 0 , whereby the proportion of binder in the molding compound by up to 50% compared to Iden previously used resins of the corresponding type can be reduced without loss of strength. This significantly reduces the amount of gas produced during casting and, at the same time, the risk of casting defects due to the binding agent, considerably reduces odor nuisance during casting, increases economic efficiency and enables an increased state of sand, which saves new sand.

Die folgenden Beispiele erläutern die erfindungsgemäße Verwendung.The following examples illustrate the use according to the invention.

709 679/446709 679/446

Claims (3)

Beispiel I 100 Teile eines Phenolharzes, das in bekannter Weise unter Verwendung von Mg(OH)2 als Katalysator aus 1 Mol Phenol und 1,2 Mol Formaldehyd hergestellt wurde, werden nach Beendigung der Entwässerung mit 0,4 Gewichtsprozent y-Amino-n-propylen-triäthoxy-silan, berechnet auf 100 Teile Harzprodukt, versetzt und 40 Minuten bei 50 0C umgesetzt. IO Mit diesem Produkt wird eine Gießereisandmischung folgender Zusammensetzung hergestellt: 100 Teile Quarzsand, 0,5 Teile 60%ige wäßrige p-Toluolsulfosäure, 1,2 Teile des obigen Phenolharzes. Alle Mischkomponenten hatten 20°C Mischzeiten: 1 Minute mit Härter, 2 Minuten mit Harz. Aus der Mischung wurden +GF+-Prüf körper hergestellt, und nach verschiedenen Lagerzeiten bei 20 0C und 50% relativer Luftfeuchtigkeit wurde die Biegefestigkeit in kg/cm2 bestimmt. Zum Vergleich wurden Mischungen mit dem obigen Kondensationsharzprodukt ohne Silanzugabe, und zwar mit a) 1,2 % Harz und 0,5 % Härter und b) 2,0 % Harz und 8,3% Härter hergestellt und daraus, wie oben beschrieben, Prüfkörper bei Zimmertemperatur gehärtet. Daraus ergab sich: 30 Lagerung der Prüfkörper (in Stunden) PhenoIhaiz mit Silan 1,2% Zusatz Biegefestigkeit (in kg/cm2) Phenolharz ohne Silan 1,2 % Zusatz 2,0 % Zusatz 2832443664024444844 3649713101911211121 unter 1 beschrieben, hergestellt und gehärtet, wobei folgende Mischungen eingesetzt wurden: 100 Teile Quarzsand, 0,5 Teile H3PO4, 75%ig, 35 40 45 Beispiel 2 100 Teile eines Harnstoff-Furan-Harzes, das in bekannter Weise unter Verwendung von Ammoniak und Phosphorsäure als Katalysatoren aus 1 Mol Harnstoff, 2 Mol Formaldehyd und Furfurylalkohol kondensiert wurde, werden nach der Entwässerung mit 0,4% y-Amino-n-propylen-triäthoxy-silan 40 Minuten bei 50° C umgesetzt. Mit diesem Produkt und einer Probe, die vor der Silanzugabe entnommen wurde, werden Kerne, wie 1,2 Teile Harz; 100 Teile Quarzsand, 0,8 Teile H3PO4, 75%ig, 2,0 Teile Harz. Daraus ergab sich: LagerungBiegefestigkeit (in kg/cm2)derFuranharz nachFuranharz vorPrüfkerneSilanbehandlungSilanbehandlung(in Stunden)1,2%' 2,0%1,2%2,0%24104103101771442127102063040122624396015364842651538 Patentansprüche:Example I 100 parts of a phenolic resin which was prepared in a known manner using Mg (OH) 2 as a catalyst from 1 mole of phenol and 1.2 moles of formaldehyde are, after dehydration, with 0.4 percent by weight of y-amino-n- propylene-triethoxy-silane, calculated on 100 parts of resin product, added and reacted at 50 ° C. for 40 minutes. A foundry sand mixture of the following composition is produced with this product: 100 parts of quartz sand, 0.5 part of 60% strength aqueous p-toluenesulfonic acid, 1.2 parts of the above phenolic resin. All mixing components had mixing times of 20 ° C: 1 minute with hardener, 2 minutes with resin. + GF + test bodies were produced from the mixture, and after various storage times at 20 ° C. and 50% relative humidity, the flexural strength in kg / cm2 was determined. For comparison, mixtures were prepared with the above condensation resin product without the addition of silane, namely with a) 1.2% resin and 0.5% hardener and b) 2.0% resin and 8.3% hardener and, as described above, test specimens therefrom cured at room temperature. This resulted in: 30 Storage of the test specimens (in hours) Phenolhaiz with silane 1.2% additional flexural strength (in kg / cm2) Phenolic resin without silane 1.2% additional 2.0% additional 2832443664024444844 3649713101911211121 described, manufactured and cured under 1, the following mixtures were used: 100 parts of quartz sand, 0.5 part of H3PO4, 75%, 35 40 45 Example 2 100 parts of a urea-furan resin, which in a known manner using ammonia and phosphoric acid as catalysts from 1 mol of urea , 2 mol of formaldehyde and furfuryl alcohol was condensed, are reacted with 0.4% γ-amino-n-propylene-triethoxysilane for 40 minutes at 50 ° C. after dehydration. With this product and a sample taken before the addition of silane, cores such as 1.2 parts of resin; 100 parts of quartz sand, 0.8 parts of 75% H3PO4, 2.0 parts of resin. This resulted in: Storage Flexural strength (in kg / cm2) of the furan resin after furan resin before test coresSilane treatmentSilane treatment (in hours) 1.2% '2.0% 1.2% 2.0% 24104103101771442127102063040122624396015364842651538 Patent claims: 1. Verwendung von säurehärtbaren Phenol-Aldehyd-, Harnstoff-, Melamin- oder Furfurylalkohol-Formaldehyd-Harzen und Mischprodukten aus diesen Harzen, die mit einem Silan der allgemeinen Formel1. Use of acid-curable phenol-aldehyde, urea, melamine or furfuryl alcohol-formaldehyde resins and mixed products of these resins, which are formed with a silane of the general formula OROR R' Si^OR
ORR 'Si ^ OR
OR worin R' eine Alkylengruppe mit 2 bis 6 Kohlenstoffatomen ist, die mit einer Aminogruppe oder einer Amino-niederalkylaminogruppe endständig substituiert ist, und R eine niedere Alkylgruppe ist, modifiziert sind, als Bindemittel für den Quarzsand od. dgl. bei der Herstellung von Gießereikernen und -formen hieraus nach dem KaIthärtungsverfahren. wherein R 'is an alkylene group having 2 to 6 carbon atoms, those having an amino group or an amino-lower alkylamino group is terminally substituted, and R is a lower alkyl group is modified, as a binder for the quartz sand or the like in the manufacture of foundry cores and molds from it after the cold hardening process. 2. Verwendung von Harzen gemäß Anspruch 1, dadurch gekennzeichnet, daß die Harze etwa 0,1 bis 3% des Silans enthalten.2. Use of resins according to claim 1, characterized in that the resins are about 0.1 contain up to 3% of the silane. 3. Verwendung von Harzen gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Harze Furanharze eingesetzt werden.3. Use of resins according to claim 1 or 2, characterized in that the resins Furan resins are used. In Betracht gezogene Druckschriften:
Britische Patentschrift Nr. 876 033;
USA.-Patentschriften Nr. 2 967 338, 3 093 494.Considered publications:
British Patent No. 876,033;
U.S. Patent Nos. 2,967,338, 3,093,494.
DEK56485A 1965-06-26 1965-06-26 Binder for foundry sands Pending DE1252853B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DEK56485A DE1252853B (en) 1965-06-26 1965-06-26 Binder for foundry sands
ES0328115A ES328115A1 (en) 1965-06-26 1966-06-18 Procedure to obtain agglutinants for sand of foundry. (Machine-translation by Google Translate, not legally binding)
BE682865D BE682865A (en) 1965-06-26 1966-06-21
GB27644/66A GB1143351A (en) 1965-06-26 1966-06-21 A process for the manufacture of foundry cores comprising silane-modified synthetic resin binders
BR180737/66A BR6680737D0 (en) 1965-06-26 1966-06-24 PROCESS TO MODIFY USEFUL BINDING AGENTS IN FOUNDATION SANDS AND PERFECTED FOUNDATION SAND COMPOSITES CONTAINING THE SAME
FR66861A FR1484509A (en) 1965-06-26 1966-06-24 Binder for foundry sand
NL6608856A NL6608856A (en) 1965-06-26 1966-06-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK56485A DE1252853B (en) 1965-06-26 1965-06-26 Binder for foundry sands

Publications (1)

Publication Number Publication Date
DE1252853B true DE1252853B (en) 1967-10-26

Family

ID=7227873

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK56485A Pending DE1252853B (en) 1965-06-26 1965-06-26 Binder for foundry sands

Country Status (6)

Country Link
BE (1) BE682865A (en)
BR (1) BR6680737D0 (en)
DE (1) DE1252853B (en)
ES (1) ES328115A1 (en)
GB (1) GB1143351A (en)
NL (1) NL6608856A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021231A1 (en) * 1979-06-07 1980-12-11 Mitsui Toatsu Chemicals RESIN COMPOSITION SUITABLE FOR BINDING MOLDED SAND
US4626560A (en) * 1981-10-08 1986-12-02 Union Carbide Corporation Novel binding agent compositions, foundry sand compositions and ureido functional organosilicon compounds
USRE32812E (en) * 1982-01-21 1988-12-27 Borden (Uk) Limited Foundry moulds and cores
US4831067A (en) * 1986-04-23 1989-05-16 Lemon Peter H R B Process for the manufacture of frictional elements and frictional elements produced thereby
US5082876A (en) * 1988-04-08 1992-01-21 Borden, Inc. Compositions for foundry molding processes utilizing reclaimed sand
US5190993A (en) * 1988-04-08 1993-03-02 Borden, Inc. Process to enhance the tensile strength of reclaimed sand bonded with ester cured alkaline phenolic resin using an aminosilane solution
US5234973A (en) * 1988-04-08 1993-08-10 Acme Resin Corporation Compositions for foundry molding processes utilizing reclaimed sand
US5238976A (en) * 1990-06-15 1993-08-24 Borden, Inc. Process to enhance the tensile strength of reclaimed sand bonded with ester cured alkaline phenolic resin

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2427902A1 (en) * 1978-06-05 1980-01-04 Leclerc Georges Phenol!-formaldehyde! resin mouldings, partic. tile, prodn. - using resin contg. siliceous filler and wetting agent, pref. amino:silane
DE2829669C3 (en) * 1978-07-06 1981-04-16 Dynamit Nobel Ag, 5210 Troisdorf Resin binder with storage-stable adhesion promoters
US4782102A (en) * 1982-12-27 1988-11-01 Union Carbide Corporation Novel organofunctional silanes containing hindered group
EP3495073B1 (en) 2010-12-16 2020-07-15 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Low emission cold curing binders for foundry industry

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967338A (en) * 1958-01-16 1961-01-10 Dow Chemical Co Foundry core sand compositions
GB876033A (en) * 1958-04-25 1961-08-30 Hoeganasmetoder Ab Modified resin binders for siliceous materials
US3093494A (en) * 1961-06-12 1963-06-11 Dow Corning Preparation of molded articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967338A (en) * 1958-01-16 1961-01-10 Dow Chemical Co Foundry core sand compositions
GB876033A (en) * 1958-04-25 1961-08-30 Hoeganasmetoder Ab Modified resin binders for siliceous materials
US3093494A (en) * 1961-06-12 1963-06-11 Dow Corning Preparation of molded articles

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021231A1 (en) * 1979-06-07 1980-12-11 Mitsui Toatsu Chemicals RESIN COMPOSITION SUITABLE FOR BINDING MOLDED SAND
US4626560A (en) * 1981-10-08 1986-12-02 Union Carbide Corporation Novel binding agent compositions, foundry sand compositions and ureido functional organosilicon compounds
USRE32812E (en) * 1982-01-21 1988-12-27 Borden (Uk) Limited Foundry moulds and cores
US4831067A (en) * 1986-04-23 1989-05-16 Lemon Peter H R B Process for the manufacture of frictional elements and frictional elements produced thereby
US5082876A (en) * 1988-04-08 1992-01-21 Borden, Inc. Compositions for foundry molding processes utilizing reclaimed sand
US5190993A (en) * 1988-04-08 1993-03-02 Borden, Inc. Process to enhance the tensile strength of reclaimed sand bonded with ester cured alkaline phenolic resin using an aminosilane solution
US5234973A (en) * 1988-04-08 1993-08-10 Acme Resin Corporation Compositions for foundry molding processes utilizing reclaimed sand
US5238976A (en) * 1990-06-15 1993-08-24 Borden, Inc. Process to enhance the tensile strength of reclaimed sand bonded with ester cured alkaline phenolic resin

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BR6680737D0 (en) 1973-02-15
NL6608856A (en) 1966-12-27
GB1143351A (en) 1969-02-19
BE682865A (en) 1966-12-21
ES328115A1 (en) 1967-04-01

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