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6883587 |
Polyisocyanate compositions and their use
This invention relates to polyisocyanate compositions comprising (a) polyisocyanate, and (b) a monomeric carbodiimide. The polyisocyanate compositions are particularly useful in phenolic urethane...
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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,...
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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...
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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...
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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...
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6426374 |
Foundry binder compositions and mixes that contain a divalent sulfur compound
This invention relates to foundry binder compositions that contain a divalent sulfur compound, and/or foundry mixes where the aggregate contains a divalent sulfur compound. The foundry binders and...
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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...
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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...
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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...
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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...
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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...
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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...
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6071985 |
Catalytic curing agent for resins and method for making the same
Dimethylpropylamine is provided. This new amine surprisingly has a significantly less offensive odor and is considerably less prone to be impregnated in or coat the skin and clothing than are other...
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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...
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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...
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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...
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6017978 |
Polyurethane forming no-bake foundry binders
This invention relates to a polyurethane no-bake foundry binder comprising (1) phenolic resin component which comprises (a) a phenolic resin, (b) hydrofluoric acid, and (c) a silane, and (2) an...
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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...
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5981622 |
Foundry binder of polyurethane, phenolic resin, polyisocyanate and epoxy resin
Compositions and methods for improving the characteristics of foundry cores which includes adding to a foundry aggregate mixture polyurethane resin binder comprising epoxy resin and, preferably,...
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5962567 |
Bound multi-component sand additive
Two or more sand additive particles are made to adhere to each other, using a binder. The finished product consists of free-flowing particles that are composed of the additive particles bound...
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5908914 |
Benzylic ether phenolic resole resins and their uses
This invention relates to benzylic ether phenolic resole resins prepared in a sealed reaction vessel and their uses. The benzylic ether phenolic resole resins are prepared by heating phenol and an...
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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...
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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...
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5874487 |
Foundary 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...
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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.
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5786409 |
Foundry resins
A process for making foundry cores and molds is disclosed as well as the core and molds which are produced as well as a sand binder. The binder is a resin which includes a lignin dissolved in a...
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5733952 |
Foundry binder of phenolic resole resin, polyisocyanate and epoxy resin
Compositions and methods for improving the characteristics of foundry cores which includes adding to a foundry aggregate mixture polyurethane resin binder comprising epoxy resin and, preferably,...
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5591810 |
Curable furan resin(s) modified with phenolic resin(s) for use as binders for cements and coating compositions having improved thermal stability processes for their preparation and their use
Curable furan resins modified with phenolic resins for use as binders for cements and coating compositions having improved thermal stability, processes for their preparation and their use....
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5567743 |
Reclamation of ester-cured phenolic resin bonded foundry sands
This invention relates to a process for reclaiming ester-cured phenolic resin bonded sand. The process comprises contacting attrition reclaimed sand with a compound which converts potassium...
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5516859 |
Polyurethane-forming no-bake foundry binder systems
This invention relates to polyurethane-forming foundry no-bake binder systems comprising a phenolic resin component and polyisocyanate component. The phenolic resin component comprises a blend of...
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5473009 |
Mold material composition and method for preparing mold
A self-hardening mold material composition comprising 100 parts by weight of molding sand, 0.1 to 6 parts by weight of a component (a), 0.1 to 4 parts by weight of a component (b), 0.05 to 2.0...
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5455287 |
Foundry mixes containing a polyether polyol and their use
This invention relates to foundry mixes which comprise a dry foundry aggregate and a polyurethane-forming foundry binder. The binder components include a polyether polyol component and an organic...
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5447968 |
Polyurethane-forming binder systems containing 2,2'-dipyridyl, 1,10-phenanthroline, and their substituted alkyl derivatives
This invention relates to polyurethane-forming foundry binder systems which contain a nitrogen-containing aromatic compound selected from the group consisting of 2,2'-dipyridyl,...
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5346942 |
Monolithic refractories
The present invention provides a monolithic refractory with self-flowability. A monolithic refractory of the first invention of the present invention contains refractory aggregates, liquid novolak...
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5338774 |
Polyurethane-forming binder systems containing a polyphosphoryl chloride
Polyphosphoryl chlorides are used in polyurethane-forming foundry binder systems to extend the bench life of foundry mixes prepared by mixing the binder systems with sand. The foundry mixes are...
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5281644 |
Ambient temperature hardening binder compositions
There are disclosed methods and compositions for retarding the ambient temperature hardening of a phenolic resole resin alone or with an aggregate when such resin is contacted with a nitroalkane...
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5246457 |
Xenogeneic collagen/mineral preparations in bone repair
A composition for use in bone repair, in particular, in only procedures, which comprises calcium phosphate mineral particles in admixture with atelopeptide reconstituted fibrillar collagen...
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RE34228 |
Alkaline benzylic ether phenolic resin binders
Modified benzylic ether resole resins and process for their preparation. The resins are prepared by treating a phenol with a molar excess of aldehyde in the presence of a divalent metal ion...
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5180759 |
Exothermic compositions
An exothermic composition comprises a particulate readily oxidizable metal such as aluminum, magnesium or silicon and an organic fluorine-containing compound, and usually an oxidizing agent for the...
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RE34092 |
Phenolic resin compositions and their use in foundry 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.
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5132339 |
Polyurethane-forming foundry binders containing a polyether polyol
Certain polyether polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by cold-box and no-bake processes. Such molds and cores are used to make metal...
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5043412 |
Ambient temperature curing, high carbon contributing compositions
A raw batch composition for use in making a shaped article such as a foundry shape or refractory article is disclosed. The composition comprises a mixture of an aggregate material; a phenol...
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5043365 |
Novel molding materials
A granular molding material with a binder comprising a phenol novolac and a polyisocyanate which hardens upon addition of amine catalysts wherein the molar ratio of phenol to formaldehyde in the...
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4946876 |
Polyurethane-forming foundry binders containing a polyester polyol
Certain polyester polyols are used in polyurethane-forming binders to improve the shakeout of molds and cores, made by a cold-box process, used to make low melting metal castings.
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4852629 |
Cold-box process for forming foundry shapes which utilizes certain carboxylic acids as bench life extenders
Certain carboxylic acids are used in polyurethane-forming binder compositions to extend the bench life of such compositions. The binder compositions are particularly useful for preparing sand...
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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.
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4847308 |
Composition, method for preparing and use thereof
Polymeric cyclopentadiene derivatives, method for preparing polymeric cyclopentadiene derivatives, and use of polymeric cyclopentadiene derivatives in curable binder compositions.
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4782102 |
Novel organofunctional silanes containing hindered group
A novel organofunctional silane for use in binding agent compositions employed in foundry sands and the cores and molds made therefrom. The novel organofunctional silane is characterized in that it...
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4775704 |
Mold material for forming sandmold without requiring mold wash
A mold material for forming sandmolds for manufacturing metal castings, consisting essentially of an organic binder: 0.4-3.0 percent, a catalyst for curing the organic binder: 0.2-2.0 percent of, a...
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4760101 |
Polyurethane-forming binder compositions containing certain carboxylic acids as bench life extenders
Certain carboxylic acids are used in polyurethane-forming binder compositions to extend the bench life of such compositions. The binder compositions are particularly useful for preparing sand...
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