Matches 1 - 50 out of 100 1 2 >


Match Document Document Title
8029614 Dry mixture of an aggregate material, a molding process using the same, and a core mold  
There are provided a dry aggregate mixture wherein the binder, even when heated, does not evolve unpleasant odor or gas hazardous to human health; a method of foundry molding wherein a space for...
7984750 Binder degradation of sand cores  
A sand core is prepared for use in defining a surface of a cast metal article. The core is formed of sand particles bonded with a polyurethane resin, preferably a polyol moiety-containing...
7967053 Process for casting a part from a pour of molten metal into a mold assembly  
This invention relates to filters made from a refractory material, preferably an insulating material, and chemical binder. The filters are used in the foundry industry to filter molten metal. The...
7000680 Casting mold and method for manufacturing the same  
A casting mold which is molded by heating mulled sand including a mixture of refractory molding sand particles, an inorganic water soluble binder and water, wherein the inorganic water soluble...
6860319 Acid activated clay for use in foundry sand  
A foundry sand binder formed by reacting a smectite clay containing exchangeable calcium ions with an acid to enhance the ability of the clay to bind sand in forming a metal casting sand mold. The...
6664310 Hydrogenfluorides of aminosilanols and their use  
This invention relates to hydrogenfluorides of aminosilanols and their use. The hydrogenfluorides of aminosilanols are formed by the reaction of an aqueous solution of a fluorinated acid,...
6372032 Foundry exothermic assembly  
A foundry exothermic assembly is formed by mixing hollow glass microspheres and an inorganic or organic binder with matrix forming constituents including an oxidizable metal, an oxidizing agent, a...
6335387 Insulating sleeve compositions containing fine silica and their use  
This invention relates to insulating sleeve compositions comprising (1) a major amount of hollow aluminosilicate microspheres, and (2) fine silica. The sleeve compositions are used to form sleeve...
6286585 Sleeve mixes containing stabilized microspheres and their use in making riser sleeves  
This invention relates to exothermic and insulating sleeve mixes comprising (1) a sleeve composition comprising stabilized hollow aluminosilicate microspheres, and (2) a chemically reactive binder....
6232368 Ester cured binders  
An embodiment of the present invention provides a method for improving the tensile strength of foundry cores and molds over what may be conventionally achieved. The use of acidic methylene...
5983984 Insulating sleeve compositions and their uses  
Insulating sleeve mixes that contain hollow aluminosilicate microspheres, an organic binder, and boric acid and/or a phosphate, and their uses.
5884688 Methods for fabricating shapes by use of organometallic ceramic precursor binders  
This invention relates to the discovery of organometallic ceramic precursor binders used to fabricate shaped bodies by different techniques. Exemplary shape making techniques which utilize...
5880174 Amine modified polyisocyanates and their use in foundry binder systems  
The invention relates to amine modified polyisocyanates having urea linkages and their use in foundry binder systems. The modified polyisocyanates are prepared by reacting a polyisocyanate with an...
5643675 Addition for promotion of bench life extension in a hot box binder system  
The invention relates to the use of tripotassium citrate monohydrate and other alkali metal salts of polybasic acid as bench life extenders in heat curable hot box foundry mixtures comprising sand,...
5602192 Process for producing sand mold  
A foundry mold is produced from sand by blending, with one another, sand, a binder comprising a ester cured-phenolic resin, a curing agent comprising an organic ester compound and one or more...
5431367 Multilayer injection molds having improved surface properties  
Articles such as molds for thermoplastics, having an insulating layer preferably of resin deposited on the metal core materials, have a second layer of metal suspended in resin deposited on said...
5391460 Resin composition and process for investment casting using stereolithography  
A resin composition for investment casting contains a moderate boiling temperature liquid inert diluent, having a boiling point in the range of about 200° to 300° C. The presence of the liquid i...
5275648 Heat curable organic resin foundry sand binder composition  
A heat curable organic sand binder based upon epoxide or epoxide novolac resin and a latent dicyandiamide or imidazole curing agent, with or without an imidazole accelerator, which may be used as a...
5250110 Dustfree investment material for accurately fitting cast pieces and method of producing these investment materials  
Dustfree investment materials, for the production of accurately fitting cast parts, are described which contain water-soluble phosphates, magnesium oxide and silicon dioxide. The investment...
5238976 Process to enhance the tensile strength of reclaimed sand bonded with ester cured alkaline phenolic resin  
The present invention provides methods for treating reclaimed sand obtained from dismantled foundry molds and cores which contain a cured binder derived from an ester cured alkaline phenolic resin....
5162393 Production of foundry sand moulds and cores  
Foundry sand cores are produced by a method comprising the steps of: (1) providing a core box to contain the core (2) injecting into the core box a mixture of sand and a binder capable of being...
4985489 Production of articles of bonded particulate material and binder compositions for use therein  
A binder composition for producing articles of bonded particulate material such as foundry moulds or cores comprises an alkaline aqueous solution of a resol phenol-aldehyde resin and an oxyanion...
4961458 Method of forming a die casting with coated expendable cores  
A method for producing high pressure die castings with undercut regions comprises forming an expendable coated core of specific composition, placing it in the die in a die casting machine,...
4921038 Process for preparing mold for investment casting  
A process for preparing an investment casting mold is provided. A kneaded compound composed of an aggregate and an organic binder is cast into a core molding mold to be solidified therein to...
4884620 Hot box process for preparing foundry shapes with certain aqueous phenolic resin solutions  
This invention relates to heat curable foundry mixes and binder compositions particularly suitable for making foundry shapes by a hot box process. The binders used are aqueous basic solutions of...
4867225 Coated expendable cores for die casting dies  
The coatings are for an expendable sand core for die casting dies, which sand core has spaces between its contacting sand grains at least partially filled with resin binder. The first, base, hard,...
4852636 Process for preparing foundry shapes and castings utilizing certain polyurethane binders  
This invention relates to phenolic resin compositions containing propylene glycol mono methyl ether acetate as a solvent. It also relates to the use of these compositions in foundry binders.
4848443 Preparation of foundry molds or cores  
Foundry molds and cores are prepared by using as a binder a phenolic resin in solution in aqueous sodium hydroxide and using an ester to cure the binder. The ester may be incorporated in the...
4848442 Resin binders for foundry sand cores and molds  
An alkoxy-modified phenolic resole resin providing an improved binder for foundry cores and molds. The resin has predominantly ortho-ortho benzylic ether bridges joining the phenolic nuclei in the...
4821400 Method of making brake shoe stock  
Pre-glued, coil-coated brake shoe stock is manufactured on a continuous coil coating line wherein a heavy gauge steel strip is continuously fed through abrasion and surface cleaning steps, spray...
4780489 Modifiers for aqueous basic solutions of phenolic resole resins  
The subject invention relates to modifiers for aqueous basic solutions of phenolic resins. The modifiers are open-chain ether alcohols or ketone alcohols. They assist in stabilizing the aqueous...
4766943 Expendable die casting sand core  
Sand cores containing an acid curable binding agent are used in the production of die castings having undercut regions because of the favorable combination of shakeout properties, resistance to...
4723592 Process for preparing foundry cores and molds  
A process for preparing an alkoxy-modified phenolic resole resin useful as the polyhydroxy component of a urethane binder composition. A phenol is reacted with a molar excess of an aldehyde in the...
4678817 Novel desensitized ketone peroxide compositions and their use in the manufacture of foundry cores or moulds  
This disclosure relates to novel desensitized ketone peroxide compositions containing as desensitizing agent 2,2,4-trimethyl-1,3-pentanediol diisobutyrate. It further relates to the use of these...
4607067 Foundry sand binder  
A binder is used for binding foundry sand to form a mold and a core for casting, and consists of a condensation-reactive first compound (resin) having at least one methylol group in a molecule,...
4605052 Curing binders for foundry moulds and cores  
A foundry binder of the water-soluble alkali metal polyacrylate type having additives that include lime is cured by the use of the vapour of a low-boiling point organic ester having not more than...
4584328 Method of accelerating the breakdown of phenolic resin bonded cores  
A method of accelerating the breakdown of phenolic resin bonded cores by means of adding a basic salt of alkali metals in powder form to phenolic resin coated sand is disclosed. The basic salt is...
4487868 Foundry core compositions  
A foundry core composition containing a rapid-curing furfuryl alcohol and phenolic resole resin system useful in the "hot-box" process is provided. This composition includes an acidic curing agent...
4469517 Silicate treatment of impure silica sands  
A process is provided for treating impure silica-containing sands to make them more suitable for foundry use. The sands are treated with aqueous alkali metal silicate solutions and the resulting...
4465116 Process for preparing sand cores and molds  
In combination, a binder for a foundry aggregate and a hardener therefor, as the binder, polyvinylammonium phosphate and, as the hardener, a linear alkali polyphosphate, ammonium polyphosphate, a...
4464492 Foundry binder  
A binder composition for a foundry aggregate and a hardener therefor, as the binder, polyvinylammonium phosphate and, as the hardener, a linear alkali polyphosphate, ammonium polyphosphate, a...
4451577 Catalyst composition and method for curing furan-based foundry binders  
A catalyst composition and a foundry method for the rapid production of cured, high tensile strength foundry sand shapes from a foundry mixture containing a furan-based binder and polyvinyl alcohol...
4448234 Method for forming sand cores and molds  
A hydrogen peroxide system or composition for use in resin polymerization comprises a mixture of a major part of concentrated (70%) hydrogen peroxide admixed with minor amounts of phosphoric acid,...
4381813 Method for manufacturing foundry cores  
In-situ formation of metal sulfonate curing agents for foundry sand binders.
4381354 Resin coated sand and casting molds prepared therefrom  
The invention relates to improvements of RCS and casting molds therefrom. The improvement resides that the resinous coating contains halogen-containing compound(s) which accelerate(s) carburizing...
4366266 Binder compositions and process for making molded products therewith  
A binder composition for making molded products in conjunction with an aggregate includes in admixture a resin component comprising an organic solvent solution of a non-aqueous phenolic resin, a...
4362203 Process for preparing foundry cores or molds and binder materials used therefor  
A novel process for preparing foundry cores or molds and binder materials used therefor are provided. The binder materials comprise (a) an alcohol-soluble phenolic resin, (b) a polyvalent metal...
4345003 Resol phenolic resin binder for hot coating of foundry sand  
A phenolic resin binder useful for hot coating foundry sand and comprising a mixture of a solid resol phenolic resin and a lubricant is provided in the form of beads or rods of diameter of about...
4314599 Process for making a starting material for the manufacture of artificial graphite articles  
A heat-coalescible graphitic aggregate for making graphite molds, graphite uel elements or moderating elements for nuclear reactors, and so on, is made by first forming a suspension of carbon...
4310045 Process for forming shell sand with molten phenolformaldehyde resin  
A process of coating sand with a phenolformaldehyde resin to produce a shell sand for use in shell molds and cores. The process comprises the steps of reacting phenol and formaldehyde at an...
Matches 1 - 50 out of 100 1 2 >