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| Number | Title | Issue Date |
| 7275643 | Environmentally safe promoter for use in flotation separation of carbonates from minerals An environmentally safe composition of matter for use as a promoter chemical in flotation separation of carbonates from industrial sand is disclosed. The promoter chemical replaces the standard petroleum sulfonate, glycol ether and nonphenol used in promoter chemica... | 10/02/2007 |
| 7129283 | Binders containing an epoxy resin, an ester of a fatty acid, and a fluorinated acid This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an ester of a fatty acid; (c) a fluorinated acid, preferably hydrofluoric acid; (d) an effective amount of a oxi... | 10/31/2006 |
| 7125914 | Heat-cured furan binder system This invention relates to a heat-cured furan foundry binder system comprising a furan binder and a furan monomer or oligomer containing at least two terminal hydroxymethyl groups. The binders are particularly useful as warm-box binders, because they cure faster and ... | 10/24/2006 |
| 7122583 | Cold-box binders containing an epoxy resin, acrylate, and certain akyl esters This invention relates to foundry binder systems, which will cure in the presence of sulfur dioxide and a free radical initiator, comprising (a) an epoxy resin; (b) an acrylate; (c) an alkyl ester of a fatty acid, wherein the alkyl group of the ester is an aliphatic... | 10/17/2006 |
| 7119131 | Urethane binder compositions for foundry applications Foundry cores and molds for casting metals are prepared by forming a binder comprising a polyol, an isocyanato urethane polymer and a urethane catalyst. The binder additives and resin formulations of the invention are especially useful for casting non-ferrous metals... | 10/10/2006 |
| 7081487 | Cold-box binders containing an epoxy resin and ester of a fatty acid This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an ester of a fatty acid; (c) an effective amount of a oxidizing agent, and (d) no ethylenically unsaturated mon... | 07/25/2006 |
| 7060410 | Novolak resin solution, positive photoresist composition and preparation method thereof There is provided a method of producing a resist composition which yields a resist composition with good storage stability, and no fluctuation in characteristics between production lots. There are provided: a novolak resin solution formed by adding benzoquinone to a... | 06/13/2006 |
| 7019047 | Acrylate-free binders containing an epoxy resin and an alkyl silicate This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an alkyl silicate; (c) an ester of a fatty acid, (d) an effective amount of a oxidizing agent, and (e) no ethyle... | 03/28/2006 |
| 6918956 | Binder for aggregate, foundry cores, and other products A foundry mold and the method of making it is disclosed and claimed. Black liquor is extracted from a pulping process and used as a resin which when combined with an aggregate forms a foundry mold, foundry core or a briquette. The black liquor can be combined with a... | 07/19/2005 |
| 6720366 | Binder system on the basis of polyurethane for molding material mixtures for use in the production of casting molds and cores This invention describes the use of higher fatty acid methyl esters, i.e. of methyl monoesters of fatty acids having a carbon chain of 12 C atoms or more, for example of rapeseed oil methyl ester, as solvent for the individual or both components of polyurethane bind... | 04/13/2004 |
| 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, preferably, hydrofluoric acid, with an aminoalkoxysilane. The hydro... | 12/16/2003 |
| 6632856 | Polyurethane-forming binders This invention relates to a polyurethane-forming no-bake foundry binder comprising a (a) polyether polyol component comprising (1) a polyether polyol, (2) hydrofluoric acid, and (3) an aminoalkoxysilane, (b) a polyisocyanate component, (c) a liquid tertia... | 10/14/2003 |
| 6602931 | Polyurethane-forming binders This invention relates to a polyurethane-forming no-bake foundry binder comprising a (a) polyol component comprising (1) a polyol selected from the group consisting of polyether polyols, aminopolyols, polyester polyols, and mixtures thereof, and (2) a hyd... | 08/05/2003 |
| 6559203 | Foundry binder systems containing an alkyl resorcinol and their use This invention relates to an organic foundry binder containing an alkyl resorcinol, or preferably a readily available mixture of alkyl resorcinols, and derivatives thereof. Preferably, the organic foundry binder is a furan binder. Foundry mixes are prepar... | 05/06/2003 |
| 6544445 | Fire-resistant opening seal A fire-resistant composite substrate for use in making structural openings fire-resistant, the substrate containing: (a) elastically compressible particles; (b) at least one heat-activated expanding agent; (c) at least one heat-activated binder; and (d) a... | 04/08/2003 |
| 6509392 | Foundry binder and process No-bake foundry binders that produce foundry shapes with improved hot strength are provided. The binder comprises a polyether polyol component, a polyisocyanate component and a catalyst component that promotes the trimerization of polyisocyanates to polyi... | 01/21/2003 |
| 6465542 | Binder system for moulding mixtures for the production of moulds and cores Two-component binder system with reduced release of aromatic compounds during foundry operations, the system consisting of a phenol resin component and a polyisocyanate component, the phenol resin component comprising a phenol resin having at least two OH... | 10/15/2002 |
| 6441060 | Foundry binder of epoxy resin, acrylated polyisocyanate and acrylic The subject invention relates to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin, (b) an acrylated organic polyisocyanate, (c) a reactive unsaturated acrylic monomer, acrylic polymer, o... | 08/27/2002 |
| 6387983 | Foundry mixes containing an aliphatic mercaptan This invention relates to foundry mixes and their use in preparing foundry shapes (molds and cores) and in casting metals. The foundry mixes comprise a foundry aggregate and an organic foundry binder that contains an organic polyisocyanate and an aliphati... | 05/14/2002 |
| 6365646 | Method to improve humidity resistance of phenolic urethane foundry binders An embodiment of the present invention provides a method for improving the tensile strength of foundry cores and molds. More particularly, an embodiment of the present invention provides an improved binder for foundry cores and molds that include a fluori... | 04/02/2002 |
| 6342543 | Amine curable foundry binder system The subject invention relates to a foundry binder system that cures in the presence of a volatile amine curing catalyst. The binder system comprises (a) a compound containing at least two active methylene hydrogen atoms, (b) an organic polyisocyanate (c) ... | 01/29/2002 |
| 6291550 | Solventless polyurethane no-brake foundry binder This invention relates to a solventless polyurethane no-bake foundry binder system comprising, as individual components (a) a polyol component comprising a polyether polyol, glycol, and an aromatic polyester polyol, (b) an organic polyisocyanate component... | 09/18/2001 |
| 6288139 | Foundry binder system containing an ortho ester and their use This invention relates to polyurethane-forming foundry binder systems comprising a phenolic resin component and a polyisocyanate component, where the polyisocyanate component contains an ortho ester. The invention also relates to foundry mixes prepared fr... | 09/11/2001 |
| 6271284 | Sleeves, their preparation, and use The subject invention relates to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin,(b) an organic polyisocyanate, (c) a reactive unsaturated acrylic monomer or polymer, and (d) an oxidizi... | 08/07/2001 |
| 6136888 | Binder system on the basis of polyurethane for molding material mixtures for use in the production of casting molds and cores This invention describes the use of higher fatty acid methyl esters, i.e. of methyl monoesters of fatty acids having a carbon chain of 12 C atoms or more, for example of rapeseed oil methyl ester, as solvent for the individual or both components of polyur... | 10/24/2000 |
| 6133340 | Sleeves, their preparation, and use This invention relates to exothermic and/or insulating sleeves, their method of preparation, and their use. The sleeves are prepared by shaping a sleeve mix comprising (1) a sleeve composition capable of providing a sleeve, and (2) a chemical binder. The ... | 10/17/2000 |
| 6124375 | Foundry binder systems which contain alcohol modified polyisocyanates The invention relates to foundry binder systems which use modified polyisocyanates. The modified polyisocyanates are prepared by reacting a polyisocyanate with an aliphatic alcohol having one active hydrogen atom. These modified polyisocyanates, along wit... | 09/26/2000 |
| 6063833 | Solventless polyurethane no-bake foundry binder This invention relates to a solventless polyurethane no-bake foundry binder system comprising, as individual components (a) a polyol component comprising a polyether polyol, glycol, and an aromatic polyester polyol, (b) an organic polyisocyanate component... | 05/16/2000 |
| 6040355 | Foundry curing system A process of making sand cores and molds without the necessity of using an amine gas or sulphur dioxide gas to act as a catalyst by coating sand with a foundry resin which is capable of holding the sand in the proper shape after molding of the core or mol... | 03/21/2000 |
| 6037389 | Amine cured foundry binder systems and their uses The subject invention relates to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin,(b) an organic polyisocyanate, (c) a reactive unsaturated acrylic monomer or polymer, and (d) an oxidizi... | 03/14/2000 |
| 6025452 | Lignin based polyols A lignin-polyol mixture is reacted with an isocyanate to produce a urethane material. The rate of the reaction is controlled by the sodium concentration in the lignin-polyol mixture. The lignin includes sodium and it is desirable to have the sodium at con... | 02/15/2000 |
| 6015846 | Method of improving the properties of reclaimed sand used for the production of foundry moulds and cores Particulate refractory aggregate containing elutable alkali is treated with a particulate active clay having a particle size of less than 0.5 mm in order to reduce the level of the elutable alkali. Sand recovered from spent foundry moulds and cores produc... | 01/18/2000 |
| 6013695 | Foundry binders containing modified polyisocyanates The invention relates to foundry binder systems which contain modified polyisocyanates. The modified polyisocyanates are prepared by reacting a polyisocyanate with a triglyceride of ricinoleic acid. These modified polyisocyanates a phenolic resole resin a... | 01/11/2000 |
| 5935713 | Protective resistant composite material and projectile resistant composite body formed therefrom A composite material resistant to armour piercing bullets consisting of a highly elastic polyurethane matrix into which is embedded aggregate, preferably in the form of rounded pebbles having an average screened size range of from about 20 mm to about 60 ... | 08/10/1999 |
| 5902840 | Modified polymeric aromatic isocyanates having allophanate linkages The invention relates to modified polymeric aromatic isocyanates having allophanate linkages prepared by (a) reacting a polymeric aromatic isocyanate with a monofunctional aliphatic alcohol to form an intermediate modified polymeric isocyanate; and (b) re... | 05/11/1999 |
| 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 aliphatic primary or secondary amine. These amine modified... | 03/09/1999 |
| 5880175 | Amine cured foundry binder system and their uses The subject invention relates to a foundry binder system which cures in the presence of a volatile amine curing catalyst comprising (a) an epoxy resin,(b) an organic polyisocyanate, (c) a reactive unsaturated acrylic monomer or polymer, and (d) an oxidizi... | 03/09/1999 |
| 5859091 | No-bake foundry mixes and their use This invention relates to polyurethane-forming foundry binder systems and foundry mixes which comprise a foundry aggregate, said foundry binder system, and a liquid amine curing catalyst. The binder system comprises a polyol component containing a polyeth... | 01/12/1999 |
| 5852071 | Biphenyl additive for improvement in urethane foundry binders Compositions and methods for improving the characteristics of foundry cores which includes adding to the foundry aggregate mixture one or more biphenyl compounds.... | 12/22/1998 |
| 5792802 | Biphenyl additive for improvement in urethane foundry binders Compositions and methods for improving the characteristics of foundry cores which includes adding to the foundry aggregate mixture one or more biphenyl compounds.... | 08/11/1998 |
