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4092 results about "Polyamine" patented technology

A polyamine is an organic compound having more than two amino groups. Alkyl polyamines occur naturally but are also synthetic. Alkylpolyamines are colorless, hygroscopic, and water soluble. Near neutral pH, they exist as the ammonium derivatives. Most aromatic polyamines are crystalline solids at room temperature.

Structural modified epoxy adhesive compositions

The present invention is directed to an adhesive composition, which comprises an epoxy resin, a coupling agent, filler, and an effective amount of an amine-curing agent or curative for said epoxy resin. Advantageously, tri-functional and / or tetrafunctional epoxy resins and / or acrylate monomers will be incorporated into the adhesive composition in order to reduce open time and enhance substrate adhesion. Advantageously, a mixture of amines will be used in the curative including aliphatic amines, which have low viscosities and efficiently wet the substrate for enhancing adhesion; polyamines, which can be used to manipulate open time and allow for improved ratio tolerance of the adhesive system; and amine-terminated rubbers (ATBN), which can improve impact resistance and the toughness of the cured adhesive. Preferred coupling agents are silanes.
Owner:ASHLAND LICENSING & INTPROP LLC

Bioactive Polymers

Various polymers, including cationic polyamine polymers and dendrimeric polymers, are shown to possess anti-proliferative activity, and may therefore be useful for treatment of disorders characterised by undesirable cellular proliferation such as neoplasms and tumours, inflammatory disorders (including autoimmune disorders), psoriasis and atherosclerosis. The polymers may be used alone as active agents, or as delivery vehicles for other therapeutic agents, such as drug molecules or nucleic acids for gene therapy. In such cases, the polymers' own intrinsic anti-tumour activity may complement the activity of the agent to be delivered.
Owner:UNIV COLLEGE OF LONDON

Detection of nucleic acids and nucleic acid units

PCT No. PCT / GB96 / 01830 Sec. 371 Date Apr. 21, 1998 Sec. 102(e) Date Apr. 21, 1998 PCT Filed Jul. 25, 1996 PCT Pub. No. WO97 / 05280 PCT Pub. Date Feb. 13, 1997The invention relates to the detection of target nucleic acids or nucleic acid units in a sample, by obtaining a SER(R)S spectrum for a SER(R)S-active complex containing, or derived directly from, the target. The complex includes at least a SER(R)S-active label, and optionally a target binding species containing a nucleic acid or nucleic acid unit. In this detection method, the concentration of the target present in the SER(R)S-active complex, or of the nucleic acid or unit contained in the target binding species in the SER(R)S-active complex, is no higher than 10-10 moles per liter. Additionally or alternatively, one or more of the following features may be used with the method: i) the introduction of a polyamine; ii) modification of the target, and / or of the nucleic acid or nucleic acid unit contained in the target binding species, in a manner that promotes or facilitates its chemi-sorption onto a SER(R)S-active surface; iii) inclusion of a chemi-sorptive functional group in the SER(R)S-active label. The invention also provides SER(R)S-active complexes for use in such a method, a kit for use in carrying out the method or preparing the complexes and a method for sequencing a nucleic acid which comprises the use of the detection method to detect at least one target nucleotide or sequence of nucleotides within the acid.
Owner:RENISHAW DIAGNOSTICS

Oligopeptide-free cell culture media

InactiveUS20070212770A1Efficient expression of recombinantEfficient productionFactor VIIBacteriaCulture cellCell culture media
The present invention relates to oligopeptide-free cell culture media comprising at least 0.5 mg / L of a polyamine and to methods for cultivating cells in said oligopeptide-free cell culture media comprising at least 0.5 mg / L of a polyamine. The invention also relates to methods for expressing at least one protein in a medium comprising at least 0.5 mg / L of a polyamine and to methods for producing at least one virus in a medium comprising at least 0.5 mg / L of a polyamine.
Owner:BAXTER HEALTHCARE SA +1

Integrate chemical processes for industrial utilization of seed oils

Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain α-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain α,Ω-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an α,Ω-hydroxy acid or α,Ω-hydroxy ester, which may be (trans)esterified with a polyol to form an α,Ωpolyester polyol. Alternatively, the reduced chain unsaturated acid or ester may be hydroformylated with reductive amination to produce an α,Ω-amino acid or α,Ω-amino ester, which may be (trans)esterified to form an α,Ωpolyester polyamine.
Owner:DOW GLOBAL TECH LLC

Method of treating neurological diseases and etiologically related symptomology using carbonyl trapping agents in combination with medicaments

This invention defines a novel method for treatment of several neurological diseases and pathophysiologically related symptomology, said diseases including peripheral neuropathies, secondary symptomology of diabetes, Alzheimer's disease, Parkinson's disease, alcoholic polyneuropathy and age-onset symptomology, as well as analogous veterinary disease states. An opportunity exists for pharmacological intervention in some neurological diseases by use of water soluble, small molecular weight primary amine agents and chemical derivatives thereof. Examples of such primary pharmacological agents include 4-aminobenzoic acid and derivatives thereof. The present invention also includes: (1) oral use of optional non-absorbable polyamine polymeric co-agents such as chitosan, (2) oral use of optional known antioxidant co-agents and nutritional factors related thereto, and (3) use of the primary agents and co-agents noted above in optional combination with medicaments recognized as effective for treatment of the diseases addressed herein or symptoms thereof.
Owner:SECANT PHARMA

Animal protein-free media for cultivation of cells

The present invention relates to animal protein-free cell culture media comprising polyamines and a plant- and / or yeast-derived hydrolysate. The invention also relates to animal protein-free culturing processes, wherein cells can be cultivated, propagated and passaged without adding supplementary animal proteins in the culture medium. These processes are useful in cultivating cells, such as recombinant cells or cells infected with a virus, and for producing biological products by cell culture processes.
Owner:BAXTER INT INC +1

Nano-structure supported solid regenerative polyamine and polyamine polyol absorbents for the separation of carbon dioxide from gas mixtures including the air

ActiveUS20080293976A1Increased CO absorption capacityIncreased COMaterial nanotechnologyElectrolysis componentsPolyolSorbent
The invention relates to regenerative, supported amine sorbents that includes an amine or an amine / polyol composition deposited on a nano-structured support such as nanosilica. The sorbent provides structural integrity, as well as high selectivity and increased capacity for efficiently capturing carbon dioxide from gas mixtures, including the air. The sorbent is regenerative, and can be used through multiple operations of absorption-desorption cycles.
Owner:UNIV OF SOUTHERN CALIFORNIA

Ink-jet printing ink compositions having superior smear-fastness

Specific core-shell binders and additives for use in ink-jet printing ink compositions are provided. One class of specific core / shell binders has the general formula [AmBnC'p]x, where A and B are hydrophobic components in which A exhibits a glass transition temperature Tg between about -150° and +25° C. and B exhibits a glass transition temperature greater than 25° C., C' is a component that forms a hydrophilic or water-soluble component in the polymer chain, and has an ionic or non-ionic structure, m<30 wt %, n>40 wt %, and p<30 wt %, with the total of m+n+p=100 wt %, and x=1 to 100,000. The molecular weight (weight average) of the polymer is between about 1,000 and 2,000,000. The polymers useful in the practice of the invention are prepared by emulsifying the monomers and then conducting a free-radical polymerization in water. The foregoing binder polymer is used in conjunction with additives comprising either (a) amine alcohols having the general formulawhere R1 and R2 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, aryl, and phenoxy, R is alkyl, X is selected from the group consisting of hydrogen, alkyl, aryl, -OH, -COOH, -CHO, and substituted groups or (b) organic acids (water-soluble or water-dispersive), including polymeric acids. Other additives include amines, polyalcohols, polyamines, and polyesters. In the ink compositions of the present invention, the ratio of binder (1) to colorant (pigment) is greater than 1 to 10. The concentration of the additive is within the range of 0.005 to 50 wt %. The general ink formulation comprises: 5 to 50 wt % water-miscible solvent; 0.5 to 10 wt % colorant; 0.005 to 50 wt % additive; and water.
Owner:HEWLETT PACKARD DEV CO LP

Methods of treating chronic inflammatory diseases using carbonyl trapping agents

InactiveUS6444221B1Improved therapeutic propertyImprove propertiesBiocidePeptide/protein ingredientsEtiologyBenzoic acid
These and other objects of this invention are achieved by providing a novel method and compositions for the clinical treatment of chronic inflammatory diseases. This invention involves use of systemically administered compositions which include primary amine derivatives of benzoic acid as carbonyl trapping agents. These primary therapeutic agents act by chemically binding to and sequestering the aldehyde and/or ketone products of lipid peroxidation. Increased levels of lipid peroxidation have been repeatedly demonstrated as a part of the non-enzymatic "inflammatory cascade" process which underlies the secondary etiology of chronic inflammatory diseases. p-Aminobenzoic acid (or PABA) is an example of the primary therapeutic agent of the present invention. PABA has a small molecular weight, is water soluble, has a primary amine group that reacts with carbonyl-containing metabolites under physiological conditions and is tolerated by the body in relatively high dosages and for extended periods. The carbonyl sequestering agents are used in combination with at least one co-agent so as to produce an additional beneficial physiological effect of an anti-inflammatory nature. Such compositions are administered systemically entirely via the oral route. Co-agents of the present invention include anti-oxidants and free radical trapping compounds (e.g., alpha-tocopherol), compounds having indirect anti-oxidant activity (e.g., selenium), vitamins (e.g., pyridoxine HCl), compounds which facilitate kidney drug elimination (e.g., glycine), metabolites at risk of depletion (e.g., pantothenic acid), sulfhydryl containing chemicals (e.g., methionine), compounds which facilitate glutathione activity (e.g., N-acetylcysteine), and non-absorbable polyamine co-agents (e.g., chitosan).
Owner:SECANT PHARMA

Getter for enhanced micromechanical device performance

A desiccant compound, image projection system using the desiccant compound, and a method for utilizing the desiccant compound. The desiccant compound formed by mixing (202) a polymer binder selected from the group consisting of polysaccharides (including without limitation structural polysaccharides such as cellulose, chitin, and their functionalized derivatives), polyamines, polysulfones, and polyamides with a drying agent, typically a zeolite, at a polymer to drying agent weight ratio of 1:2.1 to 1:100, or 1:4 to 1:10. After the desiccant compound is mixed (202) it is applied (204) to a surface and cured (206), often through the application of heat and vacuum. The cured desiccant compound is conditioned (208) and the it package is sealed (210).
Owner:TEXAS INSTR INC

Two component thermosettable compositions useful for producing structural reinforcing adhesives

InactiveUS6451876B1Uniform cell structureExcessive heat dissipationEpoxy resin adhesivesEpoxyPartial system
A two part system for producing structural reinforcing adhesives is provided wherein one component containing epoxy resin is combined with a second component containing a specified curative system. An aliphatic polyamine, an amidoamine, an alcohol and an adduct of a polyamine and an epoxide are present in the curative system. When a thermally activated blowing agent is utilized, the resulting foam is remarkably uniform in cell structure and has improved strength and modulus. Hollow inorganic microspheres are employed to reduce the density of the thermoset produced from the two part system.
Owner:HENKEL KGAA

Encapsulated fragrance chemicals

A polymeric encapsulated fragrance is disclosed which is suitable for use in personal care and cleaning products. In a preferred embodiment of the invention, the fragrance is encapsulated by a first polymer material to form a fragrance encapsulated polymer, the polymer encapsulated shell is then coated with a mixture of cationic polymers, in a preferred embodiment the coating polymers are a reaction product of polyamines and (chloromethyl) oxirane or (bromomethyl) oxirane.
Owner:INTERNATIONAL FLAVORS & FRAGRANCES

Aqueous polyamine-containing carrier systems for water-insoluble materials

The present invention is drawn to a carrier composition containing: (a) at least one polyamine compound comprising at least two amino groups; (b) at least one nonionic surfactant; (c) at least one anionic silicone; and (d) at least one water-insoluble material, and wherein the composition, when combined with an aqueous phase, forms an aqueous delivery system which is both stable, and clear to slightly hazy / limpid in appearance.
Owner:LOREAL SA

Cycloalkyl substituted polyamines for cancer therapy and methods of synthesis therefor

Conformationally restricted polyamine compounds useful in treatment of cancer and other diseases marked by abnormal cell proliferation are disclosed. Improved methods of synthesizing such compounds are also disclosed. In one method of the invention, a carbene-bearing or carbene equivalent-bearing compound is reacted with the double bond of an alkene compound to form a cyclopropyl ring as the first step in the synthesis.
Owner:CELLGATE

Polyamine analog conjugates and quinone conjugates as therapies for cancers and prostate diseases

Peptide conjugates in which cytocidal and cytostatic agents, such as polyamine analogs or naphthoquinones, are conjugated to a polypeptide recognized and cleaved by enzymes such as prostate-specific antigen (PSA) and cathepsin B are provided, as well as compositions comprising these conjugates. Methods of using these conjugates in the treatment of prostate diseases are also provided.
Owner:CELLGATE

Modified membranes

InactiveUS20050029186A1Reduce dirtEssential mechanical properties of the membranesSemi-permeable membranesMembranesVinyl etherReverse osmosis
A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The reactivity modifying agent is preferably a linear polymeric anhydride, such as poly(alkyl vinyl ether / maleic anhydride). The surface activity modifications include modification of the hydrophilicity / hydrophobicity balance of the membrane, or hydrolysis followed by reaction with a polyamine to form a crosslinked polyamide layer. Such modified membranes have use as reverse osmosis membranes.
Owner:EVOQUA WATER TECH LLC

Method for synthesizing amphoteric slow-breaking quick-setting asphalt emulsifier

The invention discloses a method for synthesizing a novel amphoteric slow-breaking quick-setting asphalt emulsifier, belonging to the technical field of organic chemical synthesis. The method comprises the following steps of: reacting oleic acid with polyamine to generate acid amide polyamine, and then adding chloroactic acid to generate halogenating reaction to prepare the asphalt emulsifier, wherein the polyamine is the mixture of diethylenetriamine and triethylene tetramine. The water solubility of the hydrophilic radical of the emulsifier synthesized by the process is stronger than those of like emulsifiers, thereby obviously lowering the critical micelle concentration (CMC) value, and the particles of the produced asphalt emulsion are finer, smoother and evener. The emulsifier can effectively prevent asphalt from settling, increases the storage stability of the asphalt emulsion, reasonably regulates the charge ratio, widens the selectivity on stone materials in the application of slurry seal construction, enables the mixing time to be sufficient, and has obvious quick-setting effect and improved project quality.
Owner:河南新友公路技术有限公司 +1

Polyamine analog-amino acid conjugates useful as anticancer agents

Conjugates in which polyamine analogs are conjugated to an amino acid are provided, as well as compositions comprising these conjugates. Methods of using these conjugates as anticancer treatments are also provided.
Owner:CELLGATE

Carrier ampholytes of high pH range

Carboxylic acid-substituted polyalkylene polyamines in which amine nitrogen atoms on the polyamine backbone structure are replaced by guanidine groups provide a pH range extending into high pH values. These substances are useful as carrier ampholytes in isoelectric focusing.
Owner:BIO RAD LAB INC

Structural modified epoxy adhesive compositions

The present invention is directed to an adhesive composition, which comprises an epoxy resin, a coupling agent, filler, and an effective amount of an amine-curing agent or curative for said epoxy resin. Advantageously, tri-functional and / or tetrafunctional epoxy resins and / or acrylate monomers will be incorporated into the adhesive composition in order to reduce open time and enhance substrate adhesion. Advantageously, a mixture of amines will be used in the curative including aliphatic amines, which have low viscosities and efficiently wet the substrate for enhancing adhesion; polyamines, which can be used to manipulate open time and allow for improved ratio tolerance of the adhesive system; and amine-terminated rubbers (ATBN), which can improve impact resistance and the toughness of the cured adhesive. Preferred coupling agents are silanes.
Owner:ASHLAND LICENSING & INTPROP LLC

Encapsulated fragrance chemicals

A polymeric encapsulated fragrance is disclosed which is suitable for use in personal care and cleaning products. In a preferred embodiment of the invention, the fragrance is encapsulated by a first polymer material to form a fragrance encapsulated polymer, the polymer encapsulated shell is then coated with a mixture of cationic polymers, in a preferred embodiment the coating polymers are a reaction product of polyamines and (chloromethyl) oxirane or (bromomethyl) oxirane.
Owner:INTERNATIONAL FLAVORS & FRAGRANCES
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