| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528322000 | Imide-containing reactant | 29 |
| 20080281072 | Caprolactam-Based Composition, Process for Manufacturing an Impermeable Element, and Tank - The present invention relates to a composition that can be used to manufacture an impermeable, sealing, tight envelope, to a process for manufacturing an impermeable envelope, and to a tank. The composition of the invention comprises in % by weight relative to the total weight of the composition: from 70 to 90% of a monomer (I); from 0.1 to 1% of an activator (II), in which R is chosen from the group comprising C | 11-13-2008 |
| 20080287642 | Process for Production of Polyimide Film Having High Adhesiveness - A process for the production of non-thermoplastic polyimide film whose precursor solution has high storage stability and which exhibits high adhesiveness even without expensive surface treatment, more specifically, a process fro the production of non-thermoplastic polyimide film made of a non-thermoplastic polyimide containing a block resulting from a thermoplastic polyimide which comprises (A) the step of forming a prepolymer having amino or an acid anhydride group at the end in an organic polar solvent (B) the step of synthesizing a polyimide precursor solution by using the obtained prepolymer, an acid anhydride, and a diamine in such a way as to become substantially equimolar over the whole step, and (C) the step of casting a film-forming dope containing the polyimide precursor solution and subjecting the resultant dope to chemical and/or thermal imidization, wherein the diamine and acid anhydride used in the step (A) are selected so that the reaction of both with each other in equimolar amounts can give a thermoplastic polyimide, and the polyimide precursor obtained in the step (B) is a precursor of a non-thermoplastic polyimide. | 11-20-2008 |
| 20090012259 | BIOBENEFICIAL POLYAMIDE/POLYETHYLENE GLYCOL POLYMERS FOR USE WITH DRUG ELUTING STENTS - Provided herein is a coating comprising a polymer. The polymer comprises at least two different blocks, at least one L1 block with the formula | 01-08-2009 |
| 20090018307 | RESIN FOR OPTICAL SEMICONDUCTOR ELEMENT ENCAPSULATION CONTAINING POLYIMIDE - The present invention relates to a resin for optical semiconductor element encapsulation containing a polyimide which is obtained by an imidation of a polyimide precursor obtained by a polycondensation of an aliphatic acid dianhydride with an aliphatic or aromatic diamine compound; and an optical semiconductor device containing the resin and an optical semiconductor element encapsulated with the resin. The resin for optical semiconductor element encapsulation according to the present invention exhibits excellent advantages that it has a high light-transmitting property, is excellent in heat resistance, and shows an excellent light resistance even against short-wavelength light. | 01-15-2009 |
| 20090023886 | Fluorine-containing polymerizable monomer and polymer compound using same - Disclosed is a fluorine-containing polymerizable monomer represented by the formula [1] below. (In the formula [1], a represents an integer of 1-4.) By having a plurality of polymerizable amines in a molecule while containing a hexafluoroisopropyl group, this fluorine-containing polymerizable monomer exhibiting water repellancy, oil repellency, low water absorbency, heat resistance, weather resistance, corrosion resistance, transparency, photosensitivity, low refractive index, low dielectric properties, and the like, and thus can be applied to the field of advanced polymer materials. | 01-22-2009 |
| 20090062505 | ENDLESS BELT, PRODUCTION METHOD THEREOF AND IMAGE FORMING APPARATUS - The present invention provides an endless belt superior in peelability even under a low temperature and low humidity environment. An endless belt includes: a first region and a second region, which contain a polyimide-based resin, a contact angle to water of an outer peripheral surface of each of the first region and the second region differing from each other, and a ratio of a sum total of an area of the first region and a sum total of an area of the second region being in the range of about 80:20, to about 20:80. | 03-05-2009 |
| 20090069531 | Polyimide Film - A polyimide film which, when used in FPC production, is reduced in dimensional change during the production steps. In particular, a metal-clad laminate apt to have abnormal parts such as rumples is produced from the film, and an FPC reduced in dimensional change is obtained in high yield. The polyimide film has a tan δ peak temperature within a range of 320° C. or more and lower than 380° C. in measuring a dynamic viscoelasticity, and is characterized by having a maximum sag of 13 mm or less. | 03-12-2009 |
| 20090069532 | Polyimide Film - Disclosed herein is a polyimide film having an elongation from 50 to 150%, a tensile elastic modulus from 4 to 8 GPa, a tensile strength from 150 to 500 MPa, and a hygroscopicity of 5% or less. The polyimide film has high elastic modulus and tensile strength and an excellent elongation, and thus the polyimide film exhibits excellent material properties when it is used as a base film for TAB and COF, and its properties can be usefully modified using an additive to improve productivity and processibility thereof. | 03-12-2009 |
| 20090182115 | POLYAMIC ACID AND POLYIMIDE - Disclosed are a polyamic acid containing not less than 10 mol % of a repeating unit represented by the formula [1] below, and a polyimide represented by the formula [2] below which is obtained from such a polyamic acid. The polyamic acid and polyimide have high heat resistance as shown by a thermal decomposition temperature of not less than 300° C. In addition, the polyamic acid and polyimide have good workability because of their high solubility in solvents, while exhibiting good light transmission. (In the formulae, R | 07-16-2009 |
| 20090215979 | Process for the preparation of alkoxyamine functionalized polyethylene glycols - A method for the preparation of alkoxyamine-functionalised PEG molecules is provided. | 08-27-2009 |
| 20090292103 | POLYAMIC ACID AND POLYIMIDE - A polyamic acid comprising at least 10 mol % repeating units represented by the formula [1] or [2]; and a polyimide represented by the formula [3] or [4] which is obtained from the polyamic acid. A polyimide film having high heat resistance and satisfactory in light-transmitting properties and tensile strength is obtained from the polyamic acid. | 11-26-2009 |
| 20090312519 | Bismaleamic acid, bismaleimide and cured product thereof - A bismaleamic acid obtained by reacting a bifunctional phenylene ether oligomer diamine, obtained by introducing aromatic amino groups into both terminals of a specific bifunctional phenylene ether oligomer, with maleic anhydride, a bismaleimide obtained from the bismaleamic acid as a raw material, which bismaleimide has high heat resistance, low dielectric characteristics and excellent solvent solubility and exhibits only a small change in dielectric characteristics even in high humidity, a curable resin composition containing the above bismaleimide and a cured product obtained by curing the curable resin composition. | 12-17-2009 |
| 20100063243 | POLYAMIC ACIDS, POLYIMIDES, AND PROCESSES FOR THE PRODUCTION THEREOF - To provide polyamic acids and polyimides, which have high light transmittance and heat resistance such that their thermal decomposition temperatures are at least 300° C. and which are excellent in their solubility in solvents and have their processability improved. | 03-11-2010 |
| 20100069601 | COMPOSITIONS BASED ON HYPERBRANCHED CONDENSATION POLYMERS AND NOVEL HYPERBRANCHED CONDENSATION POLYMERS - The invention relates to personal care, home care and fabric care compositions based on hyperbranched condensation polymers having in the polymer backbone at least one unit comprising an amide bond attached to a trismethylene-aminomethane group and to novel hyperbranched condensation polymers. | 03-18-2010 |
| 20100152414 | MULTI-ARM POLYMER PRODRUGS - Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug. | 06-17-2010 |
| 20100228001 | Thermoplastic Toughening Material And Related Method - A non-fibrous, apertured membrane comprises at least one thermoplastic polymeric material and has a discrete porous structure. The membrane is soluble in the thermoset matrix polymer of a composite material. | 09-09-2010 |
| 20100273976 | POLYIMIDE-BASED MATERIAL, COMPOSITION AND FILM, AND MANUFACTURING METHOD THEREOF - A polyimide-type material that exhibits an excellent heat resistance and moldability such as easiness of molding into a film configuration and low process load, and a film made from this polyimide-type material are provided. The polyimide-type material contains a polyamic acid and/or polyimide obtained by reacting (A) at least one acyl compound selected from the group consisting of 1-cis-2-cis-3-trans-4-trans-cyclopentanetetracarboxylic acid, 1-cis-2-cis-3-trans-4-trans-cyclopentanetetracarboxylic acid dianhydride, and reactive derivatives thereof, with (B) an imino-forming compound. | 10-28-2010 |
| 20110040068 | Method for forming organic layer pattern, organic layer pattern prepared by the same and organic memory devices comprising the pattern - Disclosed are a method for forming an organic layer pattern which is characterized by forming a thin layer by coating a coating solution including a polyimide-based polymer having a heteroaromatic pendant group including a heteroatom in its polyimide major chain, a photoinitiator and a crosslinking agent on a substrate and drying the substrate, and exposing and developing the thin layer, an organic layer pattern prepared by the method, and an organic memory device comprising the pattern. According to example embodiments, a high-resolution micropattern may be formed without undergoing any expensive process, e.g., photoresist, leading to simplification of the preparation process and cost reduction. | 02-17-2011 |
| 20110313126 | LIQUID CRYSTAL ALIGNMENT AGENT, AND LIQUID CRYSTAL ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY ELEMENT FORMED FROM THE SAME - A liquid crystal alignment agent includes a polymer and an organic solvent for dissolving the polymer. The polymer contains a repeating structural unit represented by the following formula (I): | 12-22-2011 |
| 20120071627 | Soluble, Degradable Poly(ethylene glycol) Derivatives for Controllable Release of Bound Molecules into Solution - PEG and related polymer derivatives having weak, hydrolytically unstable linkages near the reactive end of the polymer are provided for conjugation to drugs, including proteins, enzymes, small molecules, and others. These derivatives provide a sufficient circulation period for a drug-PEG conjugate, followed by hydrolytic breakdown of the conjugate and release of the bound molecule. In some cases, drugs that demonstrate reduced activity when permanently coupled to PEG maintain a therapeutically suitable activity when coupled to a degradable PEG in accordance with the invention. The PEG derivatives of the invention can be used to impart improved water solubility, increased size, a slower rate of kidney clearance, and reduced immunogenicity to a conjugate formed by attachment thereto. Controlled hydrolytic release of the bound molecule into an aqueous environment can then enhance the drug's delivery profile by providing a delivery system which employs such polymers and utilizes the teachings provided herein. | 03-22-2012 |
| 20120108785 | Hydrolytically Degradable Polymers and Hydrogels Made Therefrom - Methods for preparing a poly(ether carbonates) of the formula HO—[(CH | 05-03-2012 |
| 20130102755 | PRODUCT CONTAINING EPICHLOROHYDRIN, ITS PREPARATION AND ITS USE IN VARIOUS APPLICATIONS - Product containing epichlorohydrin and at least one alkyl glycidyl ether in an amount of less than 0.1 g/kg of product. Use of the product containing epichlorohydrin in the manufacture of epoxy resins, of glycidyl ethers, of glycidyl esters, of glycidyl amides, of glycidyl imides, of products that will be used in food and drink applications, of cationization agents, and of flame retardants, of products which will be used as detergent ingredient and of epichlorohydrin oligomers. | 04-25-2013 |
| 20130172518 | FLEXIBLE MALEIMIDE POLYMER AND METHOD FOR PREPARING THE SAME - Disclosed is a flexible maleimide polymer. The flexible maleimide polymer includes a reaction product of reactants (a)-(c). The reactant (a) is maleimide, a compound with a structure represented by Formula (I), a compound with a structure represented by Formula (II), or combinations thereof | 07-04-2013 |
| 20140329986 | New Amide-Imide Compounds and Their Corresponding Polymers - The Michael reaction is employed, for example, to condense methyl acrylate with diethyl malonate to prepare the corresponding tetra-ester. Subsequent reaction with primary amines followed by thermal condensation results in spiroimides. A similar series of reaction steps can be performed starting with malonamides. | 11-06-2014 |
| 20140364582 | COPOLYESTERIMIDES OF POLY(ALKYLENE TEREPHTHALATE)S HAVING HIGH GLASS TRANSITION TEMPERATURE AND FILM MADE THEREFROM - A copolyester comprising repeating units derived from an aliphatic glycol, terephthalic acid, and the monomer of formula (I): wherein n=2, 3 or 4, and films, fibres, moulding compositions and moulded articles made therefrom. | 12-11-2014 |
| 20150011726 | DIAMINE, POLYIMIDE, AND POLYIMIDE FILM AND UTILIZATION THEREOF - Provided are (i) a polyimide which is transparent and has an excellent solution processability, a high heat resistance, and a low linear thermal expansion coefficient, and (ii) a polyimide film of the polyimide. According to the present invention, it is possible to produce, by use of a novel diamine characterized in having an amide group and a trifluoromethyl group, the polyimide which is transparent and has the excellent solution processability, the high heat resistance, and the low linear thermal expansion coefficient. The polyimide can be applied to various electronic devices such as an electronic display device. | 01-08-2015 |
| 20150291728 | EPOXY COMPOUND, PRODUCTION METHOD THEREFOR, AND CURABLE EPOXY RESIN COMPOSITION - An object of the present invention is to provide a novel epoxy compound capable of forming a highly heat-resistant cured product. The epoxy compound of the present invention is a compound represented by the following formula (1): | 10-15-2015 |
| 20160122475 | COPOLYESTERIMIDES DERIVED FROM N,N'-BIS-(HYDROXYALKYL)-PYROMELLITIC DIIMIDE AND FILMS MADE THEREFROM - A polyester film comprising a copolyester which comprises repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): wherein n=2, 3 or 4, and wherein comonomer (I) constitutes a proportion of the glycol fraction of the copolyester. | 05-05-2016 |
| 20160130399 | COPOLYESTERIMIDES DERIVED FROM N,N'-BIS-(HYDROXYALKYL)-3,3',4,4'-DIPHENYLSULFONETETRACARBOXYLIC DIIMIDE AND FILMS MADE THEREFROM - A copolyester comprising repeating units derived from an aliphatic glycol, an aromatic dicarboxylic acid, and the monomer of formula (I): (Formula (I)) wherein n=2, 3 or 4, Z is S(═O) | 05-12-2016 |
