| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528341000 | Heterocyclic-containing reactant other than cyclic acid anhydride as sole hetero ring | 7 |
| 20080227947 | Aromatic Polyamide Filament and Method of Manufacturing the Same - Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in the process of preparing the wholly aromatic polyamide polymer, the aromatic diamine, aromatic diacid chlrodie and polymerization solvent put into the reactor | 09-18-2008 |
| 20100036084 | BIODEGRADABLE POLY(BETA-AMINO ESTERS) AND USES THEREOF - Poly(β-amino esters) prepared from the conjugate addition of bis(secondary amines) or primary amines to a bis(acrylate ester) are described. Methods of preparing these polymers from commercially available starting materials are also provided. These tertiary amine-containing polymers are preferably biodegradable and biocompatible and may be used in a variety of drug delivery systems. Given the poly(amine) nature of these polymers, they are particularly suited for the delivery of polynucleotides. Nanoparticles containing polymer/polynucleotide complexes have been prepared. The inventive polymers may also be used to encapsulate other agents to be delivered. They are particularly useful in delivering labile agents given their ability to buffer the pH of their surroundings. | 02-11-2010 |
| 20120065358 | BIODEGRADABLE POLY(BETA-AMINO ESTERS) AND USES THEREOF - Poly(β-amino esters) prepared from the conjugate addition of bis(secondary amines) or primary amines to a bis(acrylate ester) are described. Methods of preparing these polymers from commercially available starting materials are also provided. These tertiary amine-containing polymers are preferably biodegradable and biocompatible and may be used in a variety of drug delivery systems. Given the poly(amine) nature of these polymers, they are particularly suited for the delivery of polynucleotides. Nanoparticles containing polymer/polynucleotide complexes have been prepared. The inventive polymers may also be used to encapsulate other agents to be delivered. They are particularly useful in delivering labile agents given their ability to buffer the pH of their surroundings. | 03-15-2012 |
| 20120277402 | DINITRO COMPOUND, DIAMINE COMPOUND, POLYAMIDE, AND OPTOELECTRONIC DEVICE - A dinitro compound, a diamine compound, a polyamide (PA) derived therefrom, and an optoelectronic device are provided. The PA is fabricated by performing a polycondensation reaction using the foregoing diamine compound and a diacyl chloride compound shown in formula (3) as monomers, and thus represented by formula (4). In formulas (3) and (4), X represents an aromatic group or an aliphatic group. The resultant novel PA can be applied to an optoelectronic device. Since the foregoing compounds have carbazole and pyridine groups, the PA is characterized by excellent solubility, a high glass transition temperature, thermal stability, excellent optical properties, and acidichromism. | 11-01-2012 |
| 20130338334 | SULFONATED AROMATIC POLYAMIDES - Described are sulfonated polyoxadiazole polymers with a high degree of sulfonation and having improved properties such as increased flame retardancy and dyeability. The polymers are useful in articles such as films, fibrids, fibers for floc, and fibers for textile uses, and other articles made from engineering plastics. | 12-19-2013 |
| 20140005353 | POLYAMIDE COMPOUND AND MOLDED ARTICLE THEREOF | 01-02-2014 |
| 20140336351 | METHOD FOR REMOVING SULFUR FROM FIBER USING A WEAK BASE - The present invention concerns methods for removing sulfur from a fiber comprising the steps of: a) contacting never-dried sulfur-containing fiber in a yarn with an aqueous base having a pKa less than or equal to 11 to release at least a portion of said sulfur, said sulfur comprising, at least in part, sulfate anions and said yarn comprising fiber derived from polymer comprising imidazole groups; and b) rinsing said yarn to remove at least a portion of released sulfur. | 11-13-2014 |
