Abstract: 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.

Abstract: A method for producing random form of nanosilicate platelets comprises mixing and acidifying an exfoliating agent with an inorganic acid to form an acidified exfoliating agent; intercalating layered inorganic silicate clay with the acidified exfoliating agent to form a mixture; and dissolving the mixture in a solvent and reacting it with a hydroxide or chloride of alkali metal or alkaline-earth metal. The hyperbranched polyamines serving as the exfoliating agent are prepared by polymerizing poly(oxypropylene)-triamine and diglycidyl ether of bisphenol-A (DGEBA). Hydrophilic amine groups of the exfoliating agent are acidified and then reacted with the layered inorganic silicate clay through cation exchange reaction and physical clay exfoliation to give random form of nanosilicate platelets.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed are processes for synthesizing polyimides by a sequential self-repetitive reaction between poly (aryl carbodiimide) (p-CDI) or aryl diisocyanates with dianhydrides.

Abstract: The manufacturing process of a material of nanocomposites of the resin includes providing a nano-clay platelets liquid; adding a modification agent into the nano-clay platelets liquid, then stirring in a first time in a first temperature for making a cake product; taking the cake product heated in a second temperature and then crumbling the cake product for making a first powder; moving the water out of the first powder for making a second powder; adding a resin into the second powder, then stirring and baking for making the material of nanocomposites of the resin.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method for producing random form of nanosilicate platelets comprises mixing and acidifying an exfoliating agent with an inorganic acid to form an acidified exfoliating agent; intercalating layered inorganic silicate clay with the acidified exfoliating agent to form a mixture; and dissolving the mixture in a solvent and reacting it with a hydroxide or chloride of alkali metal or alkaline-earth metal. The hyperbranched polyamines serving as the exfoliating agent are prepared by polymerizing poly(oxypropylene)-triamine and diglycidyl ether of bisphenol-A (DGEBA). Hydrophilic amine groups of the exfoliating agent are acidified and then reacted with the layered inorganic silicate clay through cation exchange reaction and physical clay exfoliation to give random form of nanosilicate platelets.

Abstract: The present invention relates to random form of nanoscale silicate plates produced by a process using an exfoliating agent. The exfoliating agent used in the present invention has the formula: where n=1 to 5 wherein n=1 to 5 and R is a polyoxypropylene group, poly(oxyethylene/oxypropylene) group, or polyoxyethylene group. In this invention, layered silicate clays are exfoliated into random silicate plates by acidifying AMO with inorganic acid, adding the acidified AMO to layered silicate clay with agitation, and adding sodium hydroxide or chloride of alkali metal or alkaline-earth metal, in ethanol, water and a hydrophobic organic solvent to the intermediate product and repeating phase separation procedures to isolate random silicate plates from water phase.

Abstract: The present invention discloses a material of nanocomposites of the resin and its manufacturing process. The manufacturing process comprises the steps of providing a nano-clay platelets liquid; adding a modification agent into the nano-clay platelets liquid, then stirring in a first time in a first temperature for making a cake product; taking the cake product heated in a second temperature then crumbling the cake product for making a first powder; moving the water out of the first powder for making a second powder; adding a resin into the second powder, then stirring and baking for making the material of nanocomposites of the resin.