LEIBNIZ-INSTITUT FUER POLYMERFORSCHUNG DRESDEN E.V. Patent applications |
Patent application number | Title | Published |
20130108774 | METHOD FOR PRODUCING A DRUG DELIVERY SYSTEM ON THE BASIS OF POLYELECTROLYTE COMPLEXES | 05-02-2013 |
20110311733 | Method For Curing And Surface-Functionalizing Molded Parts - The invention relates to the fields of chemistry and relates to a method for curing and surface modification of molded parts, which can be used, for example, in the automobile industry, in vehicle construction, in the electrical industry. The object of the present invention is to disclose a method which can be carried out in particular in a short time and with a high degree of reproducibility and leads to an improvement in the surface quality of the molded parts to be painted. The object is attained with a method in which materials containing at least one unsaturated radically or cationically curable reactive resin system are processed to form a molded part and during or after the molding process with or without coating are cross-linked up to dimensional stability, and during the cross-linking and/or subsequently, before and/or after a coating, the molded part is subjected to a processing by means of energetic radiation or energetic particles up to essentially complete curing at least of the surface region of the molded part. | 12-22-2011 |
20110172317 | SULFONATED POLYARYLENE COMPOUNDS, MEMBRANE MATERIAL MADE THEREFROM, METHOD FOR THE PRODUCTION THEREOF AND USE - The invention relates to the field of polymer chemistry and relates to sulfonated polyarylene compounds such as can be used for example in ion exchange membranes in fuel cells, as well as a method for the production thereof and the use thereof. The object of the present invention is to disclose hydrolytically and thermally resistant sulfonated polyarylene compounds with a defined degree and position of sulfonation, from which membrane materials with an improved resistance to hydrolysis can be produced. The object is attained through sulfonated polyarylene compounds according to at least one of the general formulas (I)-(IV). | 07-14-2011 |
20110040017 | POLYPHENYLENE SULFIDE (PER)FLUOROPOLYMER MATERIALS AND PROCESS FOR PREPARATION AND USE THEROF - The invention relates to polyphenylene sulfide (per)fluoropolymer materials, which can be used, for example, as tribomaterials. In particular, the present invention relates to polyphenylene sulfide (per)fluoropolymer materials that have an improved tribological behavior. The polyphenylene sulfide (per)fluoropolymer materials comprise a polyphenylene sulfide polymer matrix (PPS polymer matrix) with modified (per)fluoropolymer particles distributed therein in a (poly) disperse manner, which are present bonded to the PPS polymer matrix via chemical couplings. The present invention also relates to a method in which polyphenylene sulfide (PPS) with thiol groups and/or thiolate groups is reactively compounded in a melt with one or more modified (per)fluoropolymer (micro/nano) powders in a single-step or multi-step manner. | 02-17-2011 |
20100249333 | RADICALLY COUPLED PTFE POLYMER COMPOUNDS AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to the field of chemistry and relates to radically coupled PTFE polymer compounds that can be used, for example, as tribo materials, and a method for the production thereof. The object of the invention is to disclose radically coupled PTFE polymer compounds which exhibit improved wear resistances with comparable gliding properties, and furthermore a simple and efficient method for the production of such compounds. The object is attained through radically coupled PTFE polymer compounds comprising radiation-chemically and/or plasma-chemically modified PTFE powders, on the particle surface of which olefinically unsaturated polymers are chemically radically coupled by a reactive conversion into a melt. The object is further attained through a method for producing radically coupled PTFE polymer compounds, in which PTFE powders are reactively converted with reactive perfiuoroalkyl-(peroxy) radical centers after a radiation-chemical and/or plasma-chemical modification into a melt with the addition of olefinically unsaturated polymers. | 09-30-2010 |
20100222495 | LONG-TERM STABLE OIL PTFE DISPERSION AND METHOD FOR ITS PRODUCTION - The invention relates to the field of chemistry and relates to long-term stable oil PTFE dispersions, such as can be used, for example, in transmissions or bearings, and a method for the production thereof. The object of the present invention is therefore to disclose a long-term stable oil PTFE dispersion as well as a simple and cost-effective method for the production thereof. The object is attained with an oil PTFE dispersion comprising PTFE particles and a monoolefinically or polyolefinically unsaturated oil, wherein molecules of the olefinically unsaturated oil are covalently/chemically coupled to PTFE (primary) particle surfaces via radical reactions, and wherein a permanent charge separation between the PTFE particle surfaces and the coupled oil molecules is present and a fine dispersion of the PTFE particles in the oil or oil mixture is present. The object is furthermore attained through a method in which the modified PTFE (emulsion) polymers are mixed with persistent perfluoro (peroxy) radicals jointly with an olefinically unsaturated oil and subsequently the modified PTFE (emulsion) polymers are subjected to a mechanical stress. | 09-02-2010 |