1589 results about "Aldehyde formation" patented technology

The present invention is directed to hemostatic wound dressings that contain a substrate for contacting a wound, wherein the substrate includes a wound-contacting surface and is fabricated at least in part from a biocompatible aldehyde-modified polysaccharide having covalently conjugated there with a hemostatic agent and to methods of providing hemostasis to a wound that include applying the wound dressing described herein to a wound.

A pharmaceutical composition comprising a co-crystal of an API and a co-crystal former; wherein the API has at least one functional group selected from ether, thioether, alcohol, thiol, aldehyde, ketone, thioketone, nitrate ester, phosphate ester, thiophosphate ester, ester, thioester, sulfate ester, carboxylic acid, phosphonic acid, phosphinic acid, sulfonic acid, amide, primary amine, secondary amine, ammonia, tertiary amine, sp2 amine, thiocyanate, cyanamide, oxime, nitrile diazo, organohalide, nitro, s-heterocyclic ring, thiophene, n-heterocyclic ring, pyrrole, o-heterocyclic ring, furan, epoxide, peroxide, hydroxamic acid, imidazole, pyridine and the co-crystal former has at least one functional group selected from amine, amide, pyridine, imidazole, indole, pyrrolidine, carbonyl, carboxyl, hydroxyl, phenol, sulfone, sulfonyl, mercapto and methyl thio, such that the API and co-crystal former are capable of co-crystallizing from a solution phase under crystallization conditions.

Modified resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These modified resins are especially useful as froth flotation depressants in the beneficiation of many types of materials (e.g., mineral and metal ores), including the beneficiation of impure coal comprising clay impurities, as well as in the separation of valuable bitumen from solid contaminants such as sand. The modified resins are also useful for treating aqueous liquid suspensions to remove solid particulates, as well as for removing metallic ions in the purification of water. The modified resins comprise a base resin that is modified with a coupling agent, which is highly selective for binding to solid contaminants and especially siliceous materials such as sand or clay.

A catalyst for producing from an olefin the corresponding unsaturated aldehyde and unsaturated carboxylic acid in high yield; and a process for producing the catalyst. The process is for producing a composite oxide catalyst which is for use in catalytically oxidizing an olefin in a vapor phase with a gas containing molecular oxygen to produce the corresponding unsaturated aldehyde and corresponding unsaturated carboxylic acid, and which comprises (A) molybdenum, (B) bismuth, (C) cobalt and/or nickel, and (D) iron. It is characterized in that catalyst precursor particles produced through a preceding step in which an aqueous dispersion containing a raw material for the ingredient (A), raw material for the ingredient (C), and raw material for the ingredient (D) which have been united with one another and having a nitric acid radical content satisfying the relationship 1.2<=NO3/(3xFe+2x(Co+Ni)) is dried and then heated are united with a raw material for the ingredient (B) in a water-miscible solvent and the resultant united matter is dried and burned. In the relationship, NO3, Fe, Co, and Ni indicate the molar contents of nitric acid radicals, iron, cobalt, and nickel, respectively.

The invention relates to a core shell capsule containing in the core an oil or waxy solid, wherein the oil or waxy solid comprises: (1) 50-100% by weight of a perfume composition, which is a mixture of at least two perfume ingredients-selected from: a) aldehydes, including alpha beta unsaturated aldehydes, which constitute 0-20% by weight of the perfume composition; b) primary or secondary amines constituting 0-10% by weight of the perfume composition; c) perfume ingredients having ClogP>4.0, which constitute 0-25% by weight of the perfume composition; d) perfume ingredients having ClogP>5.0, which constitute 0-20% by weight of the perfume composition; and e) perfume ingredients having ClogP<2.0, which constitute 0-20% by weight of the perfume composition, and (2) 0-50% by weight of benefit agents other than perfume ingredients.

The invention relates to compositions containing at least one polyurethane prepolymer A which has isocyanate end groups and is produced from at least one polyisocyanate and at least on polyol, and at least one polyaldimine B which can be obtained from at least one polyamine C having aliphatic primary amino groups and at least one aldehyde D. The invention also relates to the production of said compositions, and to the production of the polyaldimine. Disclosed is also the use of said compositions as an adhesive, a sealant, a coating or a lining. The invention further relates to methods for gluing, sealing or coating, and to articles having a surface which has been at least partially brought into contact with one such composition. Said compositions have a significant advantage in that they are odourless before during and after the hardening thereof.

A modified activated carbon supported rhodium type catalyst for high carbene hydrocarbon hydrogen formylation reaction is provided. The preparation of the catalyst comprises the techniques such as carrier pretreatment-activity rhodium solid-phase bound reagent combination, and used for gas-liquid-solid three phase catalyst system, which is characterized in that: a certain amount of alkali or alkaline earth metal hydroxide and salt modification activated carbon is used as a carrier, and the supported rhodium catalyst is prepared by using multiple impregnation method. The catalyst of the present invention is high in activity and selectivity. The catalyst is easy to be separated from products after reaction, capable of being used repeatedly, stable in performance, and suitable for the production process of high carbene hydrocarbon or mixed olefin hydrogen formylation made high carbon aldehyde, which has good industrial application value.

The present invention is drawn to disinfectant or sterilant compositions and associated methods of use. In one embodiment, an aqueous disinfectant or sterilant composition can comprise an aqueous vehicle, including water, from 0.001 wt % to 50 wt % of a peracid, and from 0.001 wt % to 25 wt % of a peroxide. Additionally, from 0.001 ppm to 50,000 ppm by weight of a transition metal based on the aqueous vehicle content can also be present. The disinfectant composition can be used in the manufacture of disinfectant wipes, disinfectant gels, and disinfectant fogs. In one embodiment, the composition can be substantially free of aldehydes. Alternatively or additionally, the transition metal can be in the form of a colloidal transition metal.

A process for preparing functional group-containing olefinic compounds comprises the steps of (a) reacting at least one alkylidene phosphorane with at least one carbonyl-containing compound that comprises at least one group that is a leaving group, or that is capable of subsequent conversion to a leaving group, to form an olefinic compound that comprises at least one leaving group, the carbonyl-containing compound being selected from the group consisting of ketones and aldehydes; and (b) reacting the olefinic compound with at least one functional group-containing nucleophile to form a functional group-containing olefinic compound.

The present invention is drawn to disinfectant compositions, which are human safe, e.g., food grade or food safe. In one embodiment, an aqueous disinfectant composition can comprise an aqueous vehicle, including water, from 0.001 wt % to 10.0 wt % of a peroxygen, and an alcohol. Additionally, from 0.001 ppm to 50,000 ppm by weight of a transition metal based on the aqueous vehicle content can also be present. The composition can be substantially free of aldehydes. Alternatively or additionally, the transition metal can be in the form of a colloidal transition metal, such as colloidal silver or alloy thereof.

The present invention provides functionalized particles and methods for delivering said particles capable of crossing a physiologic barrier and exerting an effect. In one embodiment, the present invention provides a method of delivering a particle to a mammal comprising the steps of contacting a functionalized particle with a tag and introducing the functionalized and tagged particle to a mammal, wherein the functionalized portion of the particle is selected from the group consisting of acrylic acid, 2-hydroxyethyl acrylate, 2-acrylamido-2-methyl-1-propanesulfonic acid, allylamine, carboxyl group, hydroxyl group, sulfonic group, aldehyde and amine group. The particle is a biodegradable or nodegradable polymer and less than 1.0 mm in diameter.

The present invention is directed toward a stable calibrator and/or control, kit and process for using in a glucose monitoring instrumentation. Principally, the instant invention teaches a glycolyzed red blood cell component, which has been treated with a glycolysis stabilizing effective amount of at least one non-crosslinking aldehyde compound. The glycolyzed red blood cell component may be added to fresh plasma along with an amount of glucose to form a simulated whole blood glucose control product, effective for maintaining a particular and essentially stable glucose concentration over a period of time sufficient for accurate measurement and calibration of a glucose measuring instrument.

A method for lateral chain modification of aryl main chain polymers with aromatic ketones or aldehydes containing tertiary basic N-groups is described. The modification can be accomplished via addition of an aromatic carboxylic acid or an acid derivative containing a tertiary amine moiety to a metallized polymer. The tertiary amines on the modified polymer can be converted to quaternary amines with halogen alkanes. Modification of the aryl main chain polymers with aromatic groups containing sulphonic acid radicals is also described. The polymers formed can be crosslinked and prepared for use in a wide variety of membrane technologies including ion exchange, dialysis, reverse osmosis, nanofiltration.

A contaminant-removal filter for removing carbonyl-containing compounds from a gas stream, such as air. Examples of common airborne carbonyl-containing compounds include ketones, including acetone, and aldehydes, including formaldehyde. The filter has a porous or fibrous body that includes a plurality of passages extending from a first, inlet face to a second, outlet face, the passages providing flow paths. The body has a reactant material impregnated throughout the substrate. The reactant material is a sulfite, bisulfite, oxidant, or derivative of ammonia, specifically high molecular weight and stable amines. Strong alkali (basic) materials are particularly suitable for aldehyde removal. The filter is free of any humectants.

Methods for making asymmetrical triazines are provided. The methods comprise first forming a mixture of at least two primary amines then reacting the mixture with an aldehyde. Methods for removing sulfides from hydrocarbon streams are also provided. The triazines may be added to the hydrocarbon stream in a molar ratio of triazine:H₂S of about 10:1 to about 1:2.

There is provided a process for producing amine reaction product, in particular suitable for industrial process, whereby high yields of the amine reaction product is obtained. This is achieved by having a selected temperature range upon the contacting of the amine containing compound with the active aldehyde and/or ketone.

The invention discloses a composite frame of multi-aldehyde sodium alginate cross-linked polyethylene / chitosan for bone or cartilage repair and treatment, as well as preparation and application of the material of the framework. The framework is made from Calcium polyphosphate, chitosan and multi-aldehyde sodium alginate. As organic matrix multi-aldehyde sodium alginate cross-linked chitosan derived from nature which is the main component of the composite frameworks of the invention, therefore the composite framework is safe and non-toxic, has good biocompatibility and biodegradability, and cell identificaton signal existed on the surface provides physical support and the best chemical environment for bone or cartilage regeneration and reconstruction, the network structure makes the mechanical properties improved greatly. In addition, the components of the inorganic strengthened calcium polyphosphate are consistent with those of human bone tissue, has the property of activity which promotes bone or cartilage growth and the controllable degradation. The composite of the invention can be used as defect repair of bone or cartilage and tissue engineering, drug delivery carrier.

Disclosed are compositions including phenylephrine, its free and addition salt forms, and mixtures thereof, alone, or in combination with other pharmaceutical actives. The compositions have a pH of about 2 to about 5 and are substantially free of aldehydes. Also disclosed are methods of treating respiratory illness through administration of a composition comprising phenylephrine, its free and addition salt forms, and mixtures thereof alone, or in combination with other pharmaceutical actives, wherein the composition has a pH of from about 2 to about 5 and is substantially free of aldehydes.

Compounds represented by the following structure (I) are disclosed:

as are methods for making such compounds, wherein said methods comprise reacting a diacyldiketopiperazine with a first aldehyde to produce an intermediate compound; and reacting the intermediate compound with a second aldehyde to produce the class of compounds with the generic structure, where the first aldehyde and the second aldehydes are selected from the group consisting of an oxazolecarboxaldeyhyde, imidazolecarboxaldehyde, a benzaldehyde, imidazolecarboxaldehyde derivatives, and benzaldehyde derivatives, thereby forming the above compound wherein R₁, R₁′, R₁″, R₂, R₃, R₄, R₅, and R₆, X₁ and X₂, Y, Z, Z₁, Z₂, Z₃, and Z₄ may each be separately defined in a manner consistent with the accompanying description. Compositions and methods for treating vascular proliferation are also disclosed.