230 results about "Amidoamine" patented technology

The present invention generally relates to aqueous, acidic compositions thickened with an amidoamine oxide gelling agent and/or viscoelastic surfactant of the general formula I:

wherein R₁ is a saturated or unsaturated, straight or branched chain aliphatic group of from about 7 to about 30 carbon atoms, R₂ is a divalent alkylene group of 2–6 carbon atoms which may be linear or branched, substituted or unsubstituted, and R₃ and R₄ are independently C₁–C₄ alkyl or hydroxyalkyl groups or together they form a heterocyclic ring of up to six members, and R₅ is hydrogen or a C₁–C₄ alkyl or hydroxyalkyl group. The aforementioned gelling agents advantageously provide gels that do not undergo phase separation over extended periods of time and exhibit high heat stability. The thickened acid gels of the invention have applications in household and industrial cleaners and degreasers, oilfield stimulation applications and the like.

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.

The present invention relates to a composition comprising one or more quaternary ester ammonium compounds (a), one or more amidoamine compounds (b), wherein the weight ratio between the one or more quaternary ester ammonium compounds (a) and the one or more amidoamine compounds (b) is within a range of 1:5 to 5:1, and one or more fatty alcohols (c). The present invention also relates to a composition that is solid at room temperature, to a hair conditioner composition and to a method to prepare the hair conditioner composition by dispersing the solid composition in water at moderate temperatures.

A method of acidizing a subterranean formation involves the use of a composition containing a solution of a viscoelastic amidoamine oxide surfactant and an HF-containing acidizing solution. The composition typically contains from about 0.1 to about 8 weight percent of surfactant solution and from about 92 to about 99.9 weight percent of HF-containing acidizing solution. The composition is pumped into the subterranean formation. As the acid reacts, the composition viscosifies and becomes a self-diverting agent created in-situ. When the acid is further spent, the fluid viscosity declines eventually returning to a low viscosity state, allowing for easy cleanup. The process allows for selective acidizing of less permeable zones of the formation and more uniform stimulation of the hydrocarbon bearing formulation.

An aqueous, viscoelastic fluid gelled with a viscoelastic surfactant (VES) is inhibited against hydrate formation with an effective amount of an additive that could be one or more halide salts of alkali metals and alkali earth metals, formate salts, alcohols, glycols, glycol amines, sugars, sugar alcohols, amidoamine oxides, polymers such as polyamines, polyvinylpyrrolidones and derivatives thereof, polyvinyl alcohols and derivatives thereof, polycaprolactams and derivatives thereof, hydroxyethylcellulose, and mixtures thereof. These fluids are inhibited against hydrate formation and may have increased viscosity as well. The additives may increase viscosity to the point where less VES is required to maintain a given viscosity. These inhibited, aqueous, viscoelastic fluids may be used as treatment fluids for subterranean hydrocarbon formations, such as in stimulation treatments, e.g. hydraulic fracturing fluids.

The invention discloses a de-emulsifying agent and a method for preparing the same. The de-emulsifying agent is a polyether compound prepared by alkoxylation reaction of poly (amidoamine) (PAMAM) and epoxy compounds. The invention adopts the PAMAM with a dendritic multi-branch structure as an initiator for synthesis the de-emulsifying agent. The obtained de-emulsifying agent has the characteristics of a plurality of branched and large molecular weight. The de-emulsifying agent has good interfacial activity, infiltrability, good crude oil emulsion de-emulsifying performance, and wide applications in crude oil exploration, oil refining and other fields.

A method of acidizing a subterranean formation with a diverting agent composed of a gelled or thickened viscoelastic foam or fluid generated from (i.) an amidoamine oxide gelling agent and (ii.) an acid or foam, water and/or brine. The gelled or thickened foam or fluid may be generated in-situ or introduced directly into the formation by mixing of the amidoamine oxide gelling agent and acid or foam, water and/or brine. As the acid spends, the acidizing fluid thickens. When the acid is further spent, the fluid viscosity declines eventually returning to a low viscosity state, allowing for easy cleanup. The process allows for selective acidizing of less permeable zones of the formation and more uniform stimulation of the hydrocarbon bearing formation.

Quaternary ammonium, betaine, or sulfobetaine compositions derived from fatty amines, wherein the fatty amine is made by reducing the amide reaction product of a metathesis-derived C₁₀-C₁₇ monounsaturated acid, octadecene-1,18-dioic acid, or their ester derivatives and a secondary amine, are disclosed. Quaternary ammonium, betaine, or sulfobetaine compositions derived from fatty amidoamines, wherein the amidoamine is made by reacting of a metathesis-derived C₁₀-C₁₇ monounsaturated acid, octadecene-1,18-dioic acid, or their ester derivatives and an aminoalkyl-substituted tertiary amine, are also disclosed. The quaternized compositions are advantageously sulfonated or sulfated. In one aspect, the ester derivative of the C₁₀-C₁₇ monoun-saturated acid or octadecene-1,18-dioic acid is a lower alkyl ester. In other aspects, the ester derivative is a modified triglyceride made by self-metathesis of a natural oil or an unsaturated triglyceride made by cross-metathesis of a natural oil with an olefin. The quaternary ammonium, betaine, and sulfobetaine compositions and their sulfonated or sulfated derivatives are valuable for a wide variety of end uses, including cleaners, fabric treatment, hair conditioning, personal care (liquid cleansing products, conditioning bars, oral care products), antimicrobial compositions, agricultural uses, and oil field applications.

The invention relates to a method for preparing a computed tomography (CT)/magnatic resonance imaging (MRI) bimodal imaging contrast agent based on dendrimers. The method comprises the following steps of: (1) adding DOTA-N-hydroxy succinimide (NHS) solution into the fifth generation of poly(amidoamine) (PAMAM) dendrimer solution, adding methoxy poly(ethylene glycol) (mPEG)-COOH solution which is subjected to 1-ethy 1-3-[3-dimethylaminopropyl] carbodiimide hydrochloride (EDC) activation, reacting with stirring, and thus obtaining functionalized dendrimer solution; (2) adding chloroauric acid solution and sodium borohydride solution into the functionalized dendrimer solution, reacting with stirring, adding gadolinium nitrate solution, stirring, adding triethylamine and acetic anhydride, andreacting with stirring for 8 to 24 hours; and (3) dialyzing the solution obtained in the step (2), performing freeze drying treatment, and thus obtaining the contrast agent. The method has a simple preparation process, and experimental conditions are realized at normal temperature and under normal pressure; and the CT/MRI bimodal imaging contrast agent prepared by the method has a good CT/MRI effect, and a favorable foundation is laid for the development of a novel multifunctional contrast agent.

The invention relates to a method for preparing medical nanoparticles and belongs to the technical field of nano material preparation. The method comprises the following steps: modifying poly(amidoamine) by polyethylene glycol; modifying folic acid on the polyethylene glycol; coating quantum dots by the poly(amidoamine) modified by the polyethylene glycol and the folic acid; clamping anti-cancer medicaments into poly(amidoamine) or connecting the medicaments to the surface of the poly(amidoamine); using oil-soluble quantum dots coated by the poly(amidoamine) as nano ligands of nuclear shell structures; modifying the folic acid and polyethylene glycol on the surface of the poly(amidoamine); and positioning the poly(amidoamine) onto the surfaces of tumor cells by using the special affinity between folic acid receptors on the surface of the tumor cells and the folic acid. Meanwhile, due to the special structural characteristics of PAMAM, the internal cavities of the poly(amidoamine) can hold the anti-cancer medicaments or the surface of the poly(amidoamine) can be connected with the anti-cancer medicaments, so the toxic and side effects of the medicaments on normal tissues are reduced greatly and the stability and water solubility of the quantum dots are improved.

Disclosed is hair conditioning compositions comprising antidandruff agent wherein the hair conditioning composition is substantially free of the group selected from a chelating agent, methylchloroisothiazolinone, and methylisothiazolinone. The compositions comprise by weight: (a) from about 0.1 % to about 15 % of a high melting point fatty compound; (b) compounds selected of; (b1a) from about 0.1 % to about 10 % of an amidoamine having the following general formula: R<1> CONH (CH2)m N(R<2>)2 wherein R<1> is a residue of C11 to C24 fatty acids, R<2> is a C1 to C4 alkyl, and m is an integer from 1 to 4; (b1b) an acid selected from the group consisting of 1 glutamic acid, lactic acid, hydrochloric acid, malic acid, acetic acid, fumaric acid, 1 glutamic acid hydrochloride, tartaric acid, and mixtures thereof, at a level such that the mole ratio of amidoamine to acid is from about 1:0.3 to about 1:1; or (b2) the combination of; (b2a) from about 0.1% to about 10% of a cationic conditioning agent; and (b2b) from about 0.1% to about 10% of a low melting point oil having a melting point of less than 25 DEG C; (c) a safe and effective amount of an antidandruff agent; (e) a preservative system comprising, by weight of the entire composition, from about 0.1% to about 1.0% of benzyl alcohol, from about 0.1 % to about 1.0 % of phenoxy ethanol, from about 0.05 % to about 1.0 % of methyl paraben, and from about 0.05 % to about 1.0 % of mettryl paraben, and from about 0.01 % to about 1.0 % of propyl paraben; and (f) an aqueous carrier.

The present invention discloses new types of poly(amidoamine) (PAMAM) dendrimer-cross-linked polyimide membranes and methods for making and using these membranes. The membranes are prepared by cross-linking of asymmetric aromatic polyimide membranes using a PAMAM dendrimer as the cross-linking agent. The PAMAM-cross-linked polyimide membranes showed significantly improved selectivities for CO₂/CH₄ compared to a comparable uncrosslinked polyimide membrane. For example, PAMAM 0.0 dendrimer-cross-linked asymmetric flat sheet poly(3,3′,4,4′-diphenylsulfone tetracarboxylic dianhydride-3,3′,5,5′-tetramethyl-4,4′-methylene dianiline) (DSDA-TMMDA) polyimide membrane showed CO₂ permeance of 135.2 A.U. and CO₂/CH₄ selectivity of 20.3. However, the un-cross-linked DSDA-TMMDA asymmetric flat sheet membrane showed much lower CO₂/CH₄ selectivity (16.5) and higher CO₂ permeance (230.8 GPU).

A amidoamine composition containing oligomeric amidoamine compounds having the structure: the average of x based on the amidoamine composition is at least 0.2, and Z is the residue of a polyoxyalkylene polyether polycarboxylic acid compound, and the amidoamine composition is the reaction product of primary polyamine compounds with polyoxyalkylene polyether polycarboxylic acid compounds at a corresponding equivalent weight ratio of at least 4.0:1 under oligomeric reaction conditions effective to increase the amine nitrogen equivalent weight of the amidoamine composition by at least 10% over the average acid equivalent weight of said polyoxyalkylene polyether polyacid composition. There is also provided glycidated amidoamine compositions used as epoxy functional surfactants, and the aqueous epoxy resin dispersions thereof, and the curable epoxy resin compositions thereof.

Light-duty liquid detergents derived from metathesized natural oil feedstocks are disclosed. The detergents comprise water, at least one anionic surfactant, and at least one secondary surfactant derived from a metathesis-derived C₁₀-C₁₇ monounsaturated acid or its ester derivatives. In particular, the secondary surfactant is selected from C₁₀ amidoamines, quaternized C₁₀ or C₁₂ amidoamines, C₁₂ amidoamine oxides, C₁₂ sulfobetaines, C₁₂ amidoamine sulfobetaines, and C₁₂ alkanolamides. The detergents noted above rival or outperform commercial baselines in standard foam tests for liquid detergents, particularly those used for dishwashing.

A process for treating hair involving contacting the hair with a composition containing a surfactant mixture, the surfactant mixture containing: (a) an esterquat; and (b) a fatty acid amidoamine.

Synergistic surfactant blends are disclosed. In one aspect, the blend comprises an anionic surfactant and a metathesis-based cationic surfactant comprising a quaternized derivative. The quaternized derivative is a quaternized fatty amine, quaternized fatty amidoamine, imidazoline quat, or esteramine quat made from a metathesis-derived C10-C17 monounsaturated acid or its ester derivative. Also disclosed are synergistic surfactant blends comprising a cationic surfactant and a metathesisbased anionic surfactant comprising a sulfonated derivative. The sulfonated derivative is a fatty ester sulfonate, fatty acid sulfonate, sulfoestolide, fatty amide sulfonate, sulfonated fatty ester alkoxylate, imidazoline quat sulfonate, sulfonated amidoamine oxide, or sulfonated amidoamine betaine. The synergistic blends have a negative value or a reduced interfacial tension (IFT) when compared with an expected IFT value calculated from the individual surfactant components. Blends of the invention also exhibit surprisingly favorable solubility profiles.

The invention provides for compositions for transdermal delivery of a therapeutic agent associated with a surface modified poly(amidoamine) PAMAM dendrimer, wherein the surface modified dendrimer increased skin penetration of the therapeutic agent. The invention particularly provides for compositions and methods for transdermal delivery of anticancer and chemo-preventive agents.

Collector compositions and methods for making and using same to purify one or more crude materials are provided. The collector composition can include one or more amidoamines having the chemical Formula I and one or more amines having the chemical Formula IV, where a weight ratio of the amidoamine to the amine can be about 99:1 to about 1:99.

The invention relates to a method for preparing a poly (amidoamine) dendritic polymer/carbon nanometer tube composite material for cancer cell targeting diagnosis. The method comprises that: a carbon nanometer tube CNT is subjected to acidizing treatment; fluorescein isothiocyanate FI and folic acid FA of the poly(amidoamine) dendritic polymer are modified; a CNT composite is obtained through an EDC chemical bonding method and a carboxyl reaction on the surface of a multi-walled carbon nanometer tube which is subjected to the acidizing treatment; terminal amino and acetyl oxide of the rest dendritic polymer on the surface of the composite are subjected to acetylation reaction to obtain a functional composite carbon nanometer tube with neutral surface charge. The functional carbon nanometer tube can be scattered in a solvent for a long time without agglomeration, and the functional multi-walled carbon nanometer tube has good biocompatibility, can be combined on the cancer cell in a targeting manner, and can be used for early-stage target diagnosis of the cancer cell; the method has the advantages of simple preparation method, mild reaction condition and easy operation, and the used polymer is an environment-friendly polymer material, and has industrial implementation prospect.

The invention relates to a method for gene transfection by utilizing a PEG (polyethylene glycol) functionalized PAMAM (poly(amidoamine)) dendrimer carrier encapsulating gold nanoparticles. The method comprises the following steps: (1) preparing an activated mPEG (methoxypolyethylene glycol) solution, weighing a fifth-generation PAMAM dendrimer and dissolving the fifth-generation PAMAM dendrimer in DMSO (dimethyl sulfoxide), then adding the activated mPEG solution and carrying out magnetic stirring under room temperature to react to obtain a G5.NH2-mPEG10 solution; (2) dropwise adding an HAuCl4 aqueous solution to the G5.NH2-mPEG10 solution and quickly adding a NaBH4 solution after stirring to obtain a reaction product; (3) preparing a carrier/gene compound solution with the reaction product and pDNA (plasmid deoxyribonucleic acid) or siRNA (small interfering ribonucleic acid); (4) carrying out cell transfection by adopting the carrier/gene compound solution. The prepared carrier has the advantages of mild transfection conditions, easiness in operation, high transfection efficiency, good specificity and the like when being used for gene transfection and has good application prospect in cancer therapy and the like.

The present disclosure provides polyamides and amidoamine curing agents including the reaction product of (1) a modified amine component comprising at least one multifunctional amine of structure 1:

wherein R₁ is selected from C₁-C₁₆ linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups; R₂ and R₄ are hydrogen, R₃ is R₁ or hydrogen, X, Y, and Z are independently selected from C₂-C₁₀ alkylene, hexylene and cycloalkylene groups, n=0, 1, 2, 3, 4, 5, 6, or 7; and (2) a fatty acid component. Exemplary fatty acid components include at least one of monomer fatty acids, dimer fatty acids, trimer fatty acids, polymer fatty acids, esters of monomer, dimer, trimer, and polymer fatty acids and combinations thereof. The method for making the curing agents and articles formed therefrom are also disclosed.

This invention provides a stabilized water-base magnetic solution and its preparation method in rich surface active group with controllable number, in which, the solution includes: nano-magnetic Fe3O4 particles, stabilizer and water applying polyamide-base amine branch like polymer as the stabilizer, the polymer and modified nano-magnetic Fe3O4 particles are scattered in water forming a stable collide solution. The preparation method includes: 1, confecting nano-Fe3O4 sol, 2, surface-modifying the Fe3O4 particles and scattering them in water.

Fatty amine compositions made from a metathesis-derived C10-C17 monounsaturated acid, octadecene-1,18-dioic acid, or their ester derivatives are disclosed. In another aspect, fatty amidoamines made by reacting a metathesis-derived C10-C17 monounsaturated acid, octadecene-1,18-dioic acid, or their ester derivatives with an aminoalkyl-substituted tertiary amine are disclosed. The fatty amines or amidoamines are advantageously sulfonated, sulfitated, oxidized, or reduced. In other aspects, the ester derivative is a modified triglyceride made by self-metathesis of a natural oil or an unsaturated triglyceride made by cross-metathesis of a natural oil with an olefin.