| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528343000 | Carboxylic acid containing (C=O)-(C=O) or is a derivative thereof, e.g., oxalic acid, etc. | 6 |
| 20100113738 | MOLDING MATERIAL FOR FUEL PARTS AND FUEL PART USING THE SAME - A molding material for fuel parts (particularly a molding material for fuel parts of automobiles), ensuring excellent fuel barrier property against not only gasoline fuel, but also an alcohol mixed fuel, is provided. A molding material for fuel parts and a fuel part, comprising a polyamide containing an oxamide bond unit represented by —NH—R—NHC(═O)C(═O)—. | 05-06-2010 |
| 20110152494 | POLY(BISOXALAMIDES) - The present invention generally relates to a poly(bisoxalamide) and a process for preparing and article comprising the poly(bisoxalamide). | 06-23-2011 |
| 20120259088 | COPOLYMERS WITH PERFLUOROPOLYETHER SEGMENT AND MULTIPLE AMINOOXALYLAMINO GROUPS - Copolymers containing at least one perfluoropolyether segment and multiple aminooxalylamino groups are described. Methods of making the copolymers are also described. The copolymers can be prepared by reacting an oxalylamino-containing compound and an amine compound having at least two primary amino groups, at least two secondary amino groups, or at least one primary amino group plus at least one secondary amino group. | 10-11-2012 |
| 20130131307 | PROCESS FOR PREPARING PA-4X, AND PA-410 OBTAINABLE BY THE PROCESS - A process for preparation of a polyamide PA-4X containing monomer units of 1,4-diaminobutane and an aliphatic linear dicarboxylic acid X with at least 8 carbon atoms, which contains the following steps: 1) making a solution comprising a salt of 1,4-diaminobutane and the aliphatic linear dicarboxylic acid and water, at a temperature at which the salt dissolves; 2) concentrating the solution of the salt at a temperature above the crystallization temperature of the salt, at a pressure of at most 7 barA to a water content of between 0 and 30 wt % based on the total amount of solution, 3) producing a polymer from the solution obtained by step 2, while keeping the polymer in a melt and at a pressure of less than 18 barA, 4) depressurizing the polymer obtained at step 3 while keeping the polymer in the melt to further polymerize the polymer. In an preferred embodiment the aliphatic linear dicarboxylic acid is 1,10-decanedioic acid. Also claimed is a polyamide 410 having a viscosity number (VN) of at least 100 ml/gram. | 05-23-2013 |
| 20130172520 | POLYOXAMIDE RESIN HAVING EXCELLENT IMPACT RESISTANCE AND IMPACT-RESISTANT PART - Provided is a polyoxamide resin which has excellent impact resistance and is characterized in that the polyoxamide resin is obtained from a diamine in which the diamine component has 10 to 18 carbons and in that the polyoxamide resin has a relative viscosity (ηr) of 2.1 or greater as determined at 25° C. using 96% sulfuric acid as a solvent and a solution having a concentration of 1.0 g/dL, and also provided is an impact-resistant part comprising this resin. The polyoxamide resin has a higher molecular weight than a conventional polyoxamide resin, a large moldable temperature range as estimated from the difference between the melting point and the thermal decomposition temperature and therefore excellent molten moldability, and furthermore excellent impact resistance when compared to a conventional aliphatic polyoxamide resin without losing the low water absorbency, chemical resistance, hydrolysis resistance, high elasticity, and high strength seen with aliphatic straight-chain polyoxamide resins. | 07-04-2013 |
| 20150057428 | COPOLYMERS WITH PERFLUOROPOLYETHER SEGMENT AND MULTIPLE AMINOOXALYLAMINO GROUPS - Copolymers containing at least one perfluoropolyether segment and multiple aminooxalylamino groups are described. Methods of making the copolymers are also described. The copolymers can be prepared by reacting an oxalylamino-containing compound and an amine compound having at least two primary amino groups, at least two secondary amino groups, or at least one primary amino group plus at least one secondary amino group. | 02-26-2015 |
