Patent application number | Description | Published |
20090012242 | SYNTHESIS OF POLYIMIDES (PI) FROM POLY-CARBODIIMIDES AND DIANHYDRIDES BY SEQUENTIAL SELF-REPETITIVE REACTION (SSRR) - Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides. | 01-08-2009 |
20090145333 | Method for dispersing pigment in solvent - A method for dispersing a pigment in a solvent comprises mixing the pigment in a nanoscale with clay in a layered or platelet form and mixing the resultant mixture with the solvent. The method is based on geometric inhomogeneity and mutually exclusive aggregation. The layered or platelet clay having a high aspect ratio is provided to hinder aggregation of the pigment nanoparticles. The pigment nanoparticles can be stably dispersed in a matrix containing an organic solvent and water without aggregation again. | 06-11-2009 |
20090146107 | INORGANIC/ORGANIC DISPERSANT AND APPLICATION THEREOF - The present invention discloses an inorganic/organic mixed component (I/O) dispersant and applications thereof, which is primarily applied to dispersing nanoparticles of metal oxides. The I/O dispersant of the present invention can be a composite of inorganic clay and an organic surfactant, a composite of inorganic clay and polyoxyalkylene-amine, or a composite of inorganic clay, polyisobutylene succinic anhydride (PIB-SA) and hydrochloric acid salt or tetraalkyl quaternary salt of polyoxyalkylene-amine, or fatty amines. By mixing with the I/O dispersant of the present invention, nanoparticles of a metal oxide can be uniformly dispersed without aggregation particularly at high solid content. The dispersion has a lower viscosity and is relatively stable in storage even at high temperature. | 06-11-2009 |
20090148484 | STABLY-DISPERSING COMPOSITE OF METAL NANOPARTICLE AND INORGANIC CLAY AND METHOD FOR PRODUCING THE SAME - A stably-dispersed composite of metal nanoparticles and inorganic clay and a method for producing the composite, in which interlayered charges of the clay are replaced with the metal ions, which are then reduced to metal particles by a reducing agent. The metal particles will not aggregate together and can be stably uniformly dispersed with particle sizes smaller than conventional metal nanoparticles, and therefore have better antibiotic effect, catalytic ability and other advantages. Antibacterials in a solvent containing 0.01 wt % or more of the metal nanoparticles and inorganic clay are prepared and confirmed to be effective. | 06-11-2009 |
20090149583 | POLYMERIC POLYAMINES AND METHOD FOR STABILIZING SILVER NANOPARTICLE BY EMPLOYING THE SAME - The present invention discloses a polymeric polyamine which can be produced by polymerizing polyoxyalkylene-amine and a linker. The linker can be anhydride, carboxylic acid, epoxy, isocyanate or poly(styrene-co-maleic anhydride) copolymers (SMA). The present invention also discloses a method for stabilizing the Ag nanoparticles with polymeric polyamine. The polymeric polyamine serving as a stabilizer or dispersant is mixed with a water solution of silver salt and then a reducer is provided to reduce the silver ions and form an organic or a water solution of Ag nanoparticles. Water or solvent of this solution can be further removed through a heating, freezing or decompression process, and thus solid content of the solution can be increased. The concentrated solution also can be diluted to obtain a stable dispersion without aggregation. | 06-11-2009 |
20090149592 | METHOD FOR REDUCING METAL ION WITH NANOSILICATE PLATELETS AND DISPERSING METAL NANOPARTICLE AND PRODUCT THEREOF - The present invention provides a method for reducing metal ions (for example, silver ions) and stably dispersing metal nanoparticles by nanosilicate platelets. An organic dispersant, nanosilicate platelets and a metal ionic solution are mixed to perform a reductive reaction, wherein the organic dispersant is tri-sodium citrate dihydrate (SCD), chitosan or polyvinyl pyrrolidone (PVP), to produce a mixture of stably dispersed metal nanoparticles. | 06-11-2009 |
20100274036 | ORGANIC/INORGANIC COMPOSITIVE DISPERSANT INCLUDING INORGANIC CLAY AND ORGANIC SURFACTANT - The present invention provides an organic/inorganic compositive dispersant and a method for producing the same. The compositive dispersant comprises a complex of inorganic clay and an organic surfactant. The compositive dispersant is produced by reacting inorganic clay with the organic surfactant in a solvent to generate a complex. The inorganic clay is layered or platelet. The organic surfactant is an anionic surfactant such as alkyl sulfates, a nonionic surfactant such as octylphenol polyethoxylate and polyoxyethylene alkyl ether, or a cationic surfactant such as fatty (C12˜C32) quaternary ammonium salts and fatty (C12˜C32) quaternary ammonium chlorides. | 10-28-2010 |
20110001085 | METHOD FOR PRODUCING COMPLEX OF METALLIC NANOPARTICLE AND INORGANIC CLAY AND ETHANOLAMINE PROMOTER - A method for producing a complex of metallic nanoparticles and inorganic clay and an organic promoter, wherein the organic promoter is ethanolamine, for example, monoethanolamine (MEA), diethanolamine (DEA) or triethanolamine (TEA). The metallic nanoparticles produced by this method can be stably and uniformly dispersed without adding other reducing agent or dispersant. | 01-06-2011 |
20110003965 | CNT-PI COMPLEX HAVING EMI SHIELDING EFFECTIVENESS AND METHOD FOR PRODUCING THE SAME - The present invention provides a complex including carbon nanotubes (CNT) and polyimide (PI), and a method for producing the same. The CNT-PI complex possesses good electromagnetic shielding effectiveness. The CNT-PI complex primarily includes polyimide and carbon nanotubes dispersed in the polyimide. The method for producing the CNT-PI complex first disperses carbon nanotubes in a solvent by adding a dispersant and using an ultrasonic oscillator. Then the carbon nanotubes dispersion is mixed with polyamic acid to give a CNT-PI dispersion. The CNT-PI dispersion is then dried to form a film or layer of the CNT-PI complex. The dispersant used in this invention is an ionic liquid including organic cations and inorganic anions. The produced CNT-PI complex presents better networked structures and electrical conductivity. | 01-06-2011 |
20110011208 | METHOD FOR PREPARING SILVER NANOPARTICLES BY EMPLOYING ETHANOLAMINE - The present invention provides a method for producing silver nanoparticles by employing ethanolamine. The method of this invention can be easily operated and no organic solvent is required. Ethanolamine first reacts with a mixture of poly(oxyalkylene)-amine/epoxy or copolymers of poly(styrene-co-maleic anhydride) (abbreviated as SMA) to generate polymeric polymers. The polymeric polymers then reduce silver ions to silver atoms which are dispersed in the form of silver nanoparticles. Functional groups of the polymeric polymers can chelate with silver ions and be stably compatible with water or organic solvents, whereby the silver nanoparticles can be stably dispersed without aggregation and the produced silver nanoparticles. | 01-20-2011 |
20110024699 | POLYMERIC POLYMER CONTAINING POLY(OXYETHYLENE)-AMINE AND APPLICATION THEREOF TO PREPARING SILVER NANOPARTICLE - A polymeric polymer containing poly(oxyethylene)-amine and its application to preparation of silver nanoparticles. The polymeric polymer is prepared from poly(oxyethylene)-amine and a linker, for example, poly(styrene-co-maleic anhydride) (SMA) or dianhydride. The polymeric polymer can chelate silver ions and reduce them to silver atoms which are dispersed as nanoparticles. No additional reducing agent is needed and more than 30% of solid content of the nanoparticles solution can be achieved without aggregation. The prepared silver nanoparticles are both hydrophilic and hydrophobic and therefore are compatible with polymers. | 02-03-2011 |
20110236430 | METHOD FOR CONTROLLING TOXICITY OF METALLIC PARTICLE AND LOW-TOXICITY COMPOSITE OF METALLIC NANOPARTICLE AND INORGANIC CLAY - The present invention provides a method for controlling toxicity of metallic particles and a low-toxicity composite of metallic nanoparticles and inorganic clay. The metallic nanoparticles are effective in preventing infection and in skinning over, and thus suitable for treating scalds/burns. In the composite, the weight ratio of metallic nanoparticles to inorganic clay preferably ranges 0.1/99.9 to 6.0/94.0 in a size of about 5 to 100 nm. Preferably, the metal is silver and the inorganic clay is nano silicate platelets. | 09-29-2011 |
20110288239 | POLYMERIC POLYAMINES AND METHOD FOR PRODUCING THE SAME - The present invention discloses a polymeric polyamine which can be produced by polymerizing polyoxyalkylene-amine and a linker. The linker can be anhydride, carboxylic acid, epoxy, isocyanate or poly(styrene-co-maleic anhydride) copolymers (SMA). The present invention also discloses a method for stabilizing the Ag nanoparticles with polymeric polyamine. The polymeric polyamine serving as a stabilizer or dispersant is mixed with a water solution of silver salt and then a reducer is provided to reduce the silver ions and form an organic or a water solution of Ag nanoparticles. Water or solvent of this solution can be further removed through a heating, freezing or decompression process, and thus solid content of the solution can be increased. The concentrated solution also can be diluted to obtain a stable dispersion without aggregation. | 11-24-2011 |
20110301369 | EXFOLIATED CLAY/SURFACTANT COMPLEX FOR INHIBITING MICROORGANISMS, VIRUSES OR PLANT PESTS - The present invention provides an exfoliated clay/surfactant complex for inhibiting microorganisms, viruses or plant pests. The weight ratio of the exfoliated clay to the surfactant can range from 99/1 to 1/99. Preferably, the exfoliated clay is an inorganic layered clay on a nano scale and the surfactant is cationic, nonionic, anionic or amphoteric. | 12-08-2011 |
20120031846 | METHOD FOR COLLECTING OIL WITH MODIFIED CLAY - The present invention provides a method for collecting oil with a modified clay. By mixing the modified clay and oil, the oil can be adsorbed to the clay. The modified clay is obtained by intercalating a hydrophobic polymer such as acidified poly(oxyalkylene)-amine into layered silicate clay, mica or talc to enlarge the interlayer space. The modified clay thus becomes hydrophobic and adsorption to the oil is promoted. | 02-09-2012 |
20120065053 | INORGANIC/ORGANIC DISPERSANT AND APPLICATION THEREOF - The present invention discloses an inorganic/organic mixed component (I/O) dispersant and applications thereof, which is primarily applied to dispersing nanoparticles of metal oxides. The I/O dispersant of the present invention can be a composite of inorganic clay and an organic surfactant, a composite of inorganic clay and polyoxyalkylene-amine, or a composite of inorganic clay, polyisobutylene succinic anhydride (PIB-SA) and hydrochloric acid salt or tetraalkyl quaternary salt of polyoxyalkylene-amine, or fatty amines. By mixing with the I/O dispersant of the present invention, nanoparticles of a metal oxide can be uniformly dispersed without aggregation particularly at high solid content. The dispersion has a lower viscosity and is relatively stable in storage even at high temperature. | 03-15-2012 |
20120093907 | COMPOSITE OF SILVER NANOPARTICLE AND LAYERED INORGANIC CLAY FOR INHIBITING GROWTH OF SILVER-RESISTANT BACTERIA - The present invention provides a composite of spherical silver nanoparticles and layered inorganic clay. This composite can effectively inhibit the growth of silver-resistant bacteria. The layered inorganic clay serves as carriers of the silver nanoparticles and disperses them. The composite has a particle size of about 5 nm to 100 nm. The silver nanoparticles can be dispersed in an organic solvent or water. | 04-19-2012 |
20120123037 | OIL-DISPERSIBLE COMPOSITE OF METALLIC NANOPARTICLE AND METHOD FOR SYNTHESIZING SAME - The present invention provides an oil-dispersible composite of metallic nanoparticles and a method for synthesizing the same. The composite primarily includes metallic nanoparticles and an oily polymeric polymer such as polyurethane (PU). The oily polymeric polymer serves as a carrier of the metallic nanoparticles by chelating therewith so that the metallic nanoparticles are dispersed uniformly. In the method of the present invention, the metallic ions are first chelated by the oily polymeric polymer and then reduced into nanoparticles. The composite of the present invention is about 5 to 100 nm in particle size. | 05-17-2012 |
20120279352 | METHOD FOR PREPARING SILVER NANOPARTICLES BY EMPLOYING ETHANOLAMINE AND POLY(STYRENE-CO-MALEIC ANHYDRIDE) COPOLYMERS - The present invention provides a method for producing silver nanoparticles by employing ethanolamine. The method of this invention can be easily operated and no organic solvent is required. Ethanolamine first reacts with copolymers of poly(styrene-co-maleic anhydride) (abbreviated as SMA) to generate polymeric polymers. The polymeric polymers then reduce silver ions to silver atoms which are dispersed in the form of silver nanoparticles. Functional groups of the polymeric polymers can chelate with silver ions and be stably compatible with water or organic solvents, whereby the silver nanoparticles can be stably dispersed without aggregation and the produced silver nanoparticles. | 11-08-2012 |
20120288553 | METHOD FOR CONTROLLING TOXICITY OF METALLIC PARTICLE AND LOW-TOXICITY COMPOSITE OF METALLIC NANOPARTICLE AND INORGANIC CLAY - The present invention provides a method for controlling toxicity of metallic particles and a low-toxicity composite of metallic nanoparticles and inorganic clay. The metallic nanoparticles are effective in preventing infection and in skinning over, and thus suitable for treating scalds/burns. In the composite, the weight ratio of metallic nanoparticles to inorganic clay preferably ranges 0.1/99.9 to 6.0/94.0 in a size of about 5 to 100 nm. Preferably, the metal is silver and the inorganic clay is nano silicate platelets. | 11-15-2012 |
20120302669 | PHOSPHOROUS FLAME RETARDANT AND APPLICATION THEREOF TO POLYMER - A phosphorous flame retardant primarily includes hexachlorotriphosphazene (HCP) having poly(oxyalkylene)amine substitutes. The poly(oxyalkylene)amine includes at least two end groups. The phosphorous flame retardant can further include layered silicate clay. The layered silicate clay can be intercalated and modified with the poly(oxyalkylene)amine substitutes of HCP to effectively promote thermal stability. The flame retardant, phosphazene-poly(oxyalkylene)amine adducts, can be applied to a polymer. By the cross-linking between them, the flame-retarding property of the polymer can be improved. Also provided is a method for producing the flame retardant of phosphazene-poly(oxyalkylene)amine adducts and application thereof to a polymer. | 11-29-2012 |
20130005918 | METHOD FOR PRODUCING POLYMERIC POLYAMINES - Polymeric polyamine is produced by polymerizing polyoxyalkylene-amine and a linker. The polyoxyalkylene-amine has a structural formula H | 01-03-2013 |
20130005920 | METHOD FOR PRODUCING CNT-PI COMPLEX HAVING EMI SHIELDING EFFECTIVENESS - A CNT-PI complex primarily includes polyimide (PI) and carbon nanotubes (CNT) dispersed in the polyimide. The method for producing the CNT-PI complex first disperses carbon nanotubes in a solvent by adding a dispersant and using an ultrasonic oscillator. Then the carbon nanotubes dispersion is mixed with polyamic acid to give a CNT-PI dispersion. The CNT-PI dispersion is then dried to form a film or layer of the CNT-PI complex. The dispersant used in this invention is an ionic liquid including organic cations and inorganic anions. The produced CNT-PI complex possesses good electromagnetic shielding effectiveness and presents better networked structures and electrical conductivity. | 01-03-2013 |
20130035445 | METHOD OF MAKING POLYMERIC POLYMER CONTAINING POLY(OXYETHYLENE)-AMINE - A polymeric polymer is prepared from poly(oxyethylene)-amine and a linker, for example, poly(styrene-co-maleic anhydride) (SMA) or dianhydride. The polymeric polymer can chelate silver ions and reduce them to silver atoms which are dispersed as nanoparticles. No additional reducing agent is needed and more than 30% of solid content of the nanoparticles solution can be achieved without aggregation. The prepared silver nanoparticles are both hydrophilic and hydrophobic and therefore are compatible with polymers. | 02-07-2013 |
20130056688 | NANOMETAL-POLYMER COMPOSITE CONDUCTIVE FILM AND METHOD FOR PREPARING THE SAME - A method for preparing a nanometal-polymer composite conductive film includes the steps of (1) mixing a metal oxide with a polymer solution; (2) coating a substrate with a solution resulting from step (1), followed by drying the resultant solution to form a film; (3) performing thermal treatment on the film formed in step (2); and (4) sintering the film thermally treated in step (3). The method dispenses with any reducing agent or dispersing agent but allows nanometallic particles to be formed in situ and thereby reduces surface resistance of the polymer film efficiently. | 03-07-2013 |
20130062577 | CARBON NANOTUBE SUSPENSION AND SUPERHYDROPHOBIC FILM PREPARED THEREFROM - A carbon nanotube suspension includes a plurality of carbon nanotubes and a block copolymer dispersant which are evenly distributed in a solvent, wherein the block copolymer includes a hydrophobic block and a functional group block, such that the carbon nanotubes react with the functional group block to form covalent bonds directly without undergoing chemical modification. The carbon nanotube suspension is effective in preparing a superhydrophobic film without undergoing chemical modification or the presence of a fluorine-containing compound. The superhydrophobic film thus prepared is of a tough stable structure and remains superhydrophobic when subjected to lengthy immersion treatment, exposure to a strong acid-base environment, or physical abrasion and polishing. | 03-14-2013 |
20130109787 | ORGANIC/INORGANIC COMPOSITIVE DISPERSANT INCLUDING INORGANIC CLAY AND ORGANIC SURFACTANT | 05-02-2013 |
20130165562 | PHOSPHOROUS FLAME RETARDANT CONTAINING CLAY - A phosphorous flame retardant containing clay is made in two steps. First, chlorines of hexachlorocyclotriphosphazene (HCP) are substituted with poly(oxyalkylene)-amines in the replacement reaction. Layered or exfoliated clay are then added to perform the intercalation, exfoliation or adsorption reaction to produce the phosphorous flame retardant. The phosphorous flame retardant can be further mixed with a polymer to promote the flame-retarding effect of the polymer. | 06-27-2013 |
20130172447 | PHOSPHOROUS FLAME RETARDANT INCLUDING NSP - A phosphorous flame retardant including nanosilicate platelets (NSP) is made by first reacting hexachlorotriphosphazene (HCP) with poly(oxyalkylene)amine, then mixing the HCP product with nano silicate platelets (NSP) to obtain the phosphorous flame retardant including NSP. The phosphorous flame retardant can be further applied to an epoxy resin as a curing agent. | 07-04-2013 |
20130189326 | METHOD FOR CONTROLLING TOXICITY OF METALLIC PARTICLE AND LOW-TOXICITY COMPOSITE OF METALLIC NANOPARTICLE AND INORGANIC CLAY - The present invention provides a method for controlling toxicity of metallic particles and a low-toxicity composite of metallic nanoparticles and inorganic clay. The metallic nanoparticles are effective in preventing infection and in skinning over, and thus suitable for treating scalds/burns. In the composite, the weight ratio of metallic nanoparticles to inorganic clay preferably ranges 0.1/99.9 to 6.0/94.0 in a size of about 5 to 100 nm. Preferably, the metal is silver and the inorganic clay is nanosilicate platelets. | 07-25-2013 |
20130296270 | METHOD FOR INHIBITING MICROORGANISMS OR PLANT PESTS USING EXFOLIATED CLAY/SURFACTANT COMPLEX - The present invention provides a method for inhibiting microorganisms or plant pests using exfoliated clay/surfactant complex. The weight ratio of the exfoliated clay to the surfactant can range from 99/1 to 1/99. Preferably, the exfoliated clay is an inorganic layered clay on a nano scale and the surfactant is cationic, nonionic, anionic or amphoteric. | 11-07-2013 |
20140079751 | METHOD OF USING COMPOSITE OF SILVER NANOPARTICLES AND NANOSILICATE PLATELETS TO INHIBIT GROWTH OF SILVER-RESISTANT BACTERIA - The present invention provides a method of using a composite of spherical silver nanoparticles and layered inorganic clay, in particular nanosilicate platelets, for inhibiting the growth of silver-resistant bacteria. The layered inorganic clay serves as carriers of the silver nanoparticles and disperses them. The composite has a particle size of about 5 nm to 100 nm. The silver nanoparticles can be dispersed in an organic solvent or water. | 03-20-2014 |
20140154468 | COMPOSITE OF SIZE-CONTROLLABLE METAL NANOPARTICALES AND THE METHOD OF MAKING THE SAME - A method of synthesizing size-controllable metal nanoparticles includes the following steps: a) Preparing an exfoliated silicate clay solution and a metal ion solution; and b) Mixing the exfoliated silicate clay solution with the metal ion solution, and the metal ions are reduced to the metal nanoparticles, which are attached to the exfoliated silicate clays. Additionally, in step A, adjust the weight ratio of the silicate clays to the metal ions to control the size of the reduced metal particles. And with larger weight ratio of the silicate clays to the metal ions, the size of the reduced metal particles becomes smaller. | 06-05-2014 |
20140239241 | SYNTHESIS OF OIL-SOLUBLE NEW COMPOSITIONS USED FOR DSERSING PIGMENT NANOPARTICLES AND THEIR APPLCATION ON ELECTROWETTING DISPLAY - The present invention provides a macromolecular dispersant and a synthesis method thereof, and the dispersant is synthesized by reacting polyisobutylene-g-succinic anhydride with amine compounds. In addition, the present invention also provides an oil-soluble dispersant composition with nano particle pigments and the manufacturing method thereof. The oil-soluble dispersant composition is manufactured by milling a macromolecular dispersant with a pigment and a grinding media. The oil-soluble dispersant composition is adequate for various pigments, shows the excellent immiscibility of oil/water interface, and owns the low viscosity of ≦4 cps and the optical density of ink ≧1.1. Therefore, the oil-soluble dispersant of the present invention for the nano particle pigment can be acted as the material of the electrowetting display. | 08-28-2014 |