C. L. Industries Inc.

Envirox, L.l.c.

Alphen, Inc.

Core-lube, Inc.

Patrick H Stewart

Wayne D Woodson

Khe-Bing J Kho

Arman V Melikyan

William R Kloster

Noah Durham

Joshua Clemence

John P Davis

Brian D Kelley

William J Schaidle

A cleaning solution including: a primary solvent; a secondary solvent, wherein the secondary solvent is at least partially miscible with the primary solvent; an oxidizing agent, wherein the oxidizing agent includes a peroxide; a chelating agent, wherein the chelating agent includes the structure of formula I: wherein R-Rare each independently selected from the group consisting of H; OH; and an alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, aryl, alkaryl, aralkyl, alkoxy, alkanoyl, aroyl, alkenyl, alkyl-alkenyl, alcohol, ether, ketone, carboxylic acid, acid halide, acid anhydride, ester, and/or amide group containing approximately 1 to approximately 25 carbon atom(s); and wherein X-Xare each independently selected from the group consisting of O; S; and Se; a surfactant system, wherein the surfactant system includes a first anionic surfactant, a second anionic surfactant, a third anionic surfactant, and a fourth anionic surfactant; a pH modifier; and an optional amino acid.

Peroxide-based multi-purpose cleaning, degreasing, sanitizing, and disinfecting solutions and methods for preparing the same

A cleaning composition including a terpene such as D-limonene or Orange oil and hydrogen peroxide or an alkaline stable peroxide in a surfactants based aqueous solution. The composition in various specific formulations is a micro-emulsion useful for a variety of materials and for both industrial and household applications.

Surfactants based aqueous compositions with D-limonene and hydrogen peroxide and methods using the same

A cleaning composition including a terpene such as D-limonene and hydrogen peroxide in a surfactants based aqueous solution. The composition in various specific formulations is a micro-emulsion useful for a variety of materials and for both industrial and household applications.

Surfactants based aqueous compositions with D-limonene and hydrogen

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, a halo-substituted acid, such as hydrochloric acid, fluoboric acid or hydrofluoric acid, and sodium perborate. The peroxide composition is characterized by its storage stability, resistance to detonation, zero flammability, ease of handling and improved catalytic properties in the polymerization of certain resins. This hydrogen peroxide composition is compatible for use with a variety of organic peroxides which have been used for resin condensation polymerization and may be used in conjunction therewith. This hydrogen peroxide composition may be safely mixed with resins and resin prepolymers on the sand prior to use. The peroxide composition, added with other peroxides, and with an acid curable condensation-type resin precursor or prepolymer to sand, formed into cores or molds, and gassed with sulfur dioxide, and optionally purged with air, at a temperature from room temperature to about 300.degree. F. for a time from a fraction of a second to several minutes forms superior sand cores and molds.

Method for forming sand cores and molds

A peroxide system or composition for use in resin polymerization consists of 1,4-diisopropylbenzene monohydroperoxide dissolved in an organic solvent which is a solvent for hydrogen peroxide and 1,4-diisopropylbenzene dihydroperoxide. The peroxide composition is characterized by its storage stability, resistance to detonation, low flammability, ease of handling and improved catalytic properties in the polymerization of certain resins. The preferred peroxide, based on economic considerations, is a crude diisopropylbenzene hydroperoxide mixture comprising a major amount of 1,4-diisopropylbenzene monohydroperoxide and a minor amount of 1,4-diisopropylbenzene dihydroperoxide, together with solvents and unreacted materials obtained as a byproduct in the commercial manufacture of p-diisopropylbenzene dihydroperoxide. A particularly stable and useful composition consists of about 20% solvent, preferably cyclohexanone, and 80% of a mixture consisting of a major part of crude diisopropylbenzene hydroperoxide and a minor part of hydrogen peroxide. This peroxide composition, and the 1,4-diisopropylbenzene monohydroperoxide, or the crude diisopropylbenzene hydroperoxide, are soluble in or miscible with furfuryl alcohol-formaldehyde resin prepolymers. The peroxide composition and the resin prepolymer are added to sand, formed into cores or molds, and gassed with sulfur dioxide, and optionally purged with air, at a temperature from room temperature to about 300.degree. F. for a time a fraction of a second to several minutes to form superior sand cores and molds.

Organic hydroperoxide catalyst system

A method of producing sand cores or molds for foundry use involves coating the sand with a novel acid catalyst composition and adding acid-curing, condensation-type resin. A novel acid catalyst composition comprises the mixture of a sulfonic acid such as benzene sulfonic acid, toluene sulfonic acid or xylene sulfonic acid, or mixtures thereof, with 0.5-20% wt. perchloric acid. A catalyst of this composition, when admixed with foundry sand and an acid-curing condensation-type resin, is a novel composition characterized by rapid cure and high tensile strength and hardness in the resulting resin-bound sand core or mold. Sand cores or molds made using this catalyst/sand/resin composition are further characterized by low emissions of oxidizable gaseous organic constituents.

Acid catalysis of resin foundry binders

The tensile strength and core hardness of a sand mold or core is increased by incorporating into a mixture of a thermosetting acid-hardenable resin and sand, a dialkyl ester of the formula:

Method, resin and catalyst for increasing the tensile strength and core

Catalyst for increasing the tensile strength and core hardness of a sand

Sand molds or cores are prepared by coating sand particles with an acid-curing condensation type resin consisting of poly furfuryl alcohol or admixtures of poly furfuryl alcohol with other acid-curing resins. The resin composition is formed into a desired shape and is cured at ambient temperature over a period of between a few seconds and a few minutes by means of an acid produced by in situ oxidation of sulfur dioxide. Sulfur dioxide is introduced into the molding composition together with an oxidizing agent which effects oxidation of the sulfur dioxide within the mold or core composition. Preferably, the oxidizing agent is an organic peroxide incorporated on the sand or introduced with the resin composition. The formation of sand cores or molds from resins comprising poly furfuryl alcohol results in products having improved tensile strengths, improved hardness, and characterized by virtually no migration or furfuryl alcohol polymers to or coating of the molds or patterns used in sand core or mold preparation.

Process for manufacturing sand cores or molds

A method of making sand molds, cores or the like for use in casting foundry pieces. First and second continuous conveyors are utilized, the first conveyor having a number of pattern pieces and flasks attached to it, and the second conveyor for transporting the sand molds, cores or the like from the flasks after deposition thereon by inverting the flasks over the second conveyor. Each flask is filled in turn with sand and binder mixture when in an upright position, the sand-binder mixture is compacted and partial curing thereof is allowed, the flasks are inverted in turn to bring the sand mold into contact with the second conveyor, and the sand mold is released from each flask while it is inverted. Each flask is then brought back into an upright position for receipt of further sand-binder mixture to repeat the process, the process being substantially continuous.

Method of automatic mold and core forming

An automatic mold and core forming machine is described wherein an endless chain conveyor is in engagement with a plurality of flasks carriers for movement therewith with a mold material retaining means positioned adjacent and end of the chain conveyor and arranged to contact the material in the flasks and retain it therein as the flasks are inverted in passage around the conveyor. A flask filling and compacting assembly is provided adjacent the opposite upper end of the chain conveyor for automatically filling and compacting the flasks as they pass thereunder and a mold draw station is provided at the underside of the chain conveyor.

Automatic mold and core forming machine

A phenol-formaldehyde resin composition and formulating process is described which is especially applicable for use as either a heat cured or as a room temperature curing binder for sand in the production of molds and cores for the foundry industry. By the use of an alkali metal sulfite such as Na.sub.2 S.sub.2 O.sub.4 (sodium hydrosulfite) NaHSO.sub.3 or Na.sub.2 S.sub.2 O.sub.3 in the latter stages of resin formulation of the resole, a final product is obtained with excellent 'through cure' characteristics and a high strength. The final cure of the phenol-formaldehyde resin or other acid catalyzed resins such as furan-formaldehyde is produced by a benzene or toluene sulfonic acid catalyst that includes a quantity of hydrofluoric or hydrofluorosilicic acid to thereby give additional binding strength when used for sand.

Growing community of inventors

Danville, IL, United States of America

Patrick H Stewart