Class / Patent application number | Description | Number of patent applications / Date published |
525436000 | Solid polymer derived from compound containing more than two carboxylic acid groups or derivatives thereof | 31 |
20100234539 | POLYAMIDE, POLYESTER AND POLYETHER BLOCK COPOLYMER - The subject of the invention is a segmented block copolymer comprising polyamide blocks, polyester blocks and polyether blocks, of general formula: | 09-16-2010 |
20120041156 | POLYIMIDE FILM - The present invention provides a polyimide film which is both outstandingly transparent and highly heat resistance, and which can be usefully employed as a transparent electrically conductive film, a TFT substrate, a flexible printed circuit substrate, and the like. | 02-16-2012 |
20120071612 | METHOD FOR THE PRODUCTION OF POLYAMINO ACID RANDOM COPOLYMERS - The present invention provides a method for the production of polyamino acid copolymers. In particular, the method may be utilized to produce high quality polyamino acid random copolymers. | 03-22-2012 |
20120108759 | CAGE-SHAPED CYCLOPENTANOIC DIANHYDRIDE, METHOD FOR PRODUCTION THEREOF, AND POLYIMIDE - A cage 1,2,3,4-cyclopentanetetracarboxylic acid ( | 05-03-2012 |
20120123064 | Multiamino Acid-Based Poly(Ester Amide)s - Biodegradable saturated and unsaturated polyester amides (PEA)s made from multiamino acid monomers and methods of making biodegradable saturated and unsaturated PEAs. | 05-17-2012 |
20120149852 | POLYIMIDE NANOWEB WITH AMIDIZED SURFACE AND METHOD FOR PREPARING - The present invention is directed to the preparation and use of aromatic polyimide nanowebs with amide-modified surfaces. Uses include as a filtration medium, and as a separator in batteries, particularly lithium-ion batteries. The invention is also directed to a filtration apparatus comprising the aromatic polyimide nanoweb with amide-modified surface. The invention is further directed to a multi-layer article comprising the aromatic polyimide nanoweb with amide-modified surface, and to an electrochemical cell comprising the multi-layer article. | 06-14-2012 |
20120296050 | POLY(AMIDE-IMIDE) BLOCK COPOLYMER, ARTICLE INCLUDING SAME, AND DISPLAY DEVICE INCLUDING THE ARTICLE - A poly(amide-imide) block copolymer that includes: a first segment including a repeating unit represented by Chemical Formula 1A, a repeating unit represented by Chemical Formula 1B, a repeating unit represented by Chemical Formula 1C, or a combination thereof; and a second segment including a repeating unit represented by Chemical Formula 2: | 11-22-2012 |
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 |
20130035447 | POLYIMIDE FILM - The present invention provides a polyimide film having a good transparency and also an excellent thermal resistance so that it is useful in a transparent conductive film, TFT substrate, a flexible printing circuit substrate, and the like. | 02-07-2013 |
20140114027 | CAGE-SHAPED CYCLOPENTANOIC DIANHYDRIDE, METHOD FOR PRODUCTION THEREOF, AND POLYIMIDE - A cage 1,2,3,4-cyclopentanetetracarboxylic acid (1,3:2,4)-dianhydride compound represented by formula [1], and a polyimide obtained by condensing the compound with a diamine. With the compound, it is possible to provide a polyimide which shows no absorption in the ultraviolet region and is highly transparent to light, has high insulating properties, has improved heat resistance and processability, and has excellent solubility in organic solvents. | 04-24-2014 |
20140148557 | THERMOSET POLYMIDES FOR MICROELECTRONIC APPLICATIONS - Dendrimer/hyperbranched materials are combined with polyimide to form a low CTE material for use as a dielectric substrate layer or an underfill. In the alternative, ruthenium carbene complexes are used to catalyze ROMP cross-linking reactions in polyimides to produce a class of cross-linkable, thermal and mechanical stable material for use as a dielectric substrate or underfill. In another alternative, dendrimers/hyperbranched materials are synthesized by different methods to produce low viscosity, high Tg, fast curing, mechanically and chemically stable materials for imprinting applications. | 05-29-2014 |
20140179878 | DINITRO MONOMER, DIAMINE MONOMER, POLYIMIDE AND MODIFIED POLYIMIDE - A polyimide including a structure shown as Formula II is provided, | 06-26-2014 |
20140275440 | DIAMINE MONOMER HAVING SIDE CHAIN, POLYIMIDE COMPOUND HAVING SIDE CHAIN AND MANUFACTURING METHOD THEREOF - A diamine monomer having a large side chain R is provided. The large side chain would interrupt the symmetry and regularity of diamine monomer. The diamine monomer has the general formula shown as formula (V) below: | 09-18-2014 |
20140275441 | POLYIMIDE COMPOUND HAVING SIDE CHAIN AND MANUFACTURING METHOD THEREOF - A polyimide compound with a large side chain R and R′ is provided. The large side chain would interrupt the symmetry and regularity of polyimide compound. The polyimide compound has the general formula shown as formula (I) below: | 09-18-2014 |
20140296451 | CHELATING COMPLEX MICELLES DRUG CARRIER - This invention provides Chelating Complex Micelles as a drug carrier. The Chelating Complex Micelles can load drugs without changing their structure, and therefore extend the half-life of drugs in the human body. The chelating complex micelles contain a metal ion core, at least one polymer, and at least one drug molecule. The metal ion is considered as a Lewis acid while polymer chain and drug molecules are referred to as Lewis bases. The drug molecule is linked to the polymer via forming coordinate bonds with metal ion, and then self-assembled to form chelating complex micelles as a drug carrier. | 10-02-2014 |
20150025200 | COMPOSITION, POLYMER FILM, AND DISPLAY DEVICE - A composition including a diamine compound and a dianhydride compound, wherein the diamine compound includes a first diamine compound represented by Chemical Formula 1, | 01-22-2015 |
20150073101 | METHOD FOR PREPARING POLYMER-NANOPARTICLES HAVING CORE-SHELL STRUCTURE BY UNIFORMLY COATING POLYMER ON METAL AND INORGANIC PARTICLES, POLYMER-NANOPARTICLES PREPARED THEREBY, AND POLYMER-NANOPARTICLE COMPOSITE COMPRISING SAME - The present invention relates to a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite comprising the same, and more specifically, a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite including the same, wherein when forming a polymer coating layer on surfaces of particles that are not subjected to separate surface treatment, excessive polymers uncoated on nanoparticles are easily removed by adding to an ionic liquid or an apolar solvent so that the polymer coating layer is formed with a nanometer-scale uniform thickness and a dense coating density, thereby showing excellent dispersibility in a polymer matrix. | 03-12-2015 |
20150094430 | DINITRO COMPOUND, DIAMINE COMPOUND, AND AROMATIC POLYIMIDE - A dinitro compound I, a diamine compound II and polyimides are provided. The diamine compound II is a reduction product of the dinitro compound I. The polyimides using the diamine compound II as one of the monomers can increase the solubility of the polyimides in various organic solvents and make the color of the polyimides to be transparent and colorless. | 04-02-2015 |
20150119534 | POLYIMIDE FILM AND PROCESS FOR PRODUCING THE SAME - A process includes the steps of: casting or coating a polyamic acid organic solvent solution on a support and drying the polyamic acid organic solvent solution thereon, so as to form a partially cured and/or partially dried polyamic acid film; dipping the polyamic acid film in tertiary amine or a solution of tertiary amine, or coating tertiary amine or a solution of tertiary amine on the polyamic acid film; and drying the film while imidizing the polyamic acid. In another process, a chemical converting agent and a catalyst are mixed in an organic solvent solution of polyamic acid. After casting and heating the mixture on a support, a partially cured and/or partially dried polyamic acid film is detached from the support. The film contains, with respect to the remaining volatile component, not less than 50 parts of catalyst, not more than 30 parts of solvent, and not more than 20 parts of chemical converting agent and/or a chemical converting agent derived component. The remaining amic acid is imidized and the film is dried. | 04-30-2015 |
20150322218 | POLYIMIDE FILMS AND PRODUCTION METHODS THEREOF - A method of producing a polyimide film, including obtaining a polyamic acid including a repeating unit of Chemical Formula 1:
| 11-12-2015 |
20150337082 | PARTICULATE AMINE-FUNCTIONALIZED POLYARYLETHERKETONE POLYMER AND COPOLYMERS THEREOF - Particles of an amine-functionalised polyaryletherketone polymer or copolymer thereof. The amine-functionalised polyaryletherketone polymer or copolymer thereof is selected from the group consisting of: polyaryletherketone polymer with terminal amine or protected amine functional group(s); polyaryletherketone-imide copoplymer with terminal amine or protected amine functional group(s); and polyaryletherketone-sulphone copolymer with terminal amine or protected amine functional group(s). | 11-26-2015 |
20150353681 | Polyamide Resin, Preparation Method Therefor, and Molded Product Including Same - The polyamide resin of the present invention is a polyamide resin containing an amine group and a carboxyl group, wherein the amine group concentration is about 200 to 300 μeq/g and two to six times as high as the carboxyl group concentration. The polyamide resin has excellent long-thermal stability. | 12-10-2015 |
20160017145 | FILM-FORMING COMPOSITION - A film-forming composition that contains a tricarbonyl-benzene hyperbranched-polymer cross-linker and a triazine-containing hyperbranch, as shown for example in the formula, can form a thin film that excels in terms of hardness and heat tolerance and exhibits a reduced decrease in index of refraction despite the addition of the cross-linker. | 01-21-2016 |
20160024255 | POLYIMIDE PRECURSOR COMPOSITION, METHOD FOR PREPARING POLYIMIDE PRECURSOR, POLYIMIDE MOLDED ARTICLE, AND METHOD FOR PREPARING POLYIMIDE MOLDED ARTICLE - A polyimide precursor composition includes a polyimide precursor including a condensation polymer of a tetracarboxylic dianhydride containing a first tetracarboxylic dianhydride having a benzene ring to which two carboxylic anhydride groups are bonded, and a second tetracarboxylic dianhydride other than the first tetracarboxylic dianhydride, and a diamine compound; and a first aqueous solvent containing water and at least one water-soluble organic solvent selected from the group consisting of a water-soluble ether solvent, a water-soluble ketone solvent, and a water-soluble alcohol solvent, or a second aqueous solvent containing a water-soluble alcohol solvent and at least one water-soluble organic solvent selected from the group consisting of a water-soluble ether solvent and a water-soluble ketone solvent, wherein the polyimide precursor is dissolved in the first aqueous solvent or the second aqueous solvent. | 01-28-2016 |
20160024256 | POLYIMIDE PRECURSOR COMPOSITION, METHOD FOR PREPARING POLYIMIDE PRECURSOR, POLYIMIDE MOLDED ARTICLE, AND METHOD FOR PREPARING POLYIMIDE MOLDED ARTICLE - A polyimide precursor composition includes a polyimide precursor including a condensation polymer of a tetracarboxylic dianhydride composed of a first tetracarboxylic dianhydride having a benzene ring to which two carboxylic anhydride groups are bonded and a second tetracarboxylic dianhydride other than the first tetracarboxylic dianhydride, and a diamine compound; a tertiary amine compound; and a water-soluble solvent containing at least one kind selected from the group consisting of water and aqueous alcohol, wherein the polyimide precursor and the tertiary amine compound are dissolved in the water-soluble solvent. | 01-28-2016 |
20160058877 | REDUCTION OF ENDOTOXINS FROM POLYANIONIC POLYMER CONJUGATES - Described herein are methods of lowering the endotoxin content from a polyanionic polymer conjugate. In particular, methods of reducing the endotoxin content from a polyanionic polymer conjugate that can be useful for a variety of drug delivery applications are described herein. | 03-03-2016 |
20160108014 | NOVEL ACID DIANHYDRIDE, METHOD FOR PREPARING SAME, AND POLYIMIDE PREPARED THEREFROM - The present invention relates to a novel acid dianhydride, a method for preparing the same, and a polyimide prepared therefrom. More specifically, the acid dianhydride according to the present invention is useful as a colorless transparent polyimide unit exhibiting excellent thermal stability and a low dielectric ratio, and the polyimide of the present invention has excellent solubility to an organic solvent compared with the conventional polyimide. | 04-21-2016 |
20160115144 | NOVEL ACID DIANHYDRIDE, METHOD FOR PREPARING SAME, AND POLYIMIDE PREPARED THEREFROM - The present invention relates to a novel acid dianhydride, a method for preparing the same, and a polyimide prepared therefrom. More specifically, the acid dianhydride according to the present invention is useful as a colorless transparent polyimide unit exhibiting excellent thermal stability and a low dielectric ratio, and the polyimide of the present invention has excellent solubility to an organic solvent compared with the conventional polyimide. | 04-28-2016 |
20160168328 | TRANSPARENT POLYIMIDE COPOLYMER, POLYIMIDE RESIN COMPOSITION AND MOLDED ARTICLE, AND PRODUCTION METHOD OF SAID COPOLYMER | 06-16-2016 |
20160177034 | High molecular weight, monoesterified polymide polymer containing a small amount of bulky diamine | 06-23-2016 |
20160177037 | AMINOSILOXANES OF HIGH PURITY | 06-23-2016 |