Patent application number | Description | Published |
20100286303 | METHOD FOR PRODUCING POLYARYL ETHERS - A process for preparing polyaryl ethers in which a polycondensation of the monomer building blocks is carried out using microwave irradiation leads to thermoplastic molding compositions having improved color properties. | 11-11-2010 |
20100311918 | METHOD FOR PRODUCING POLYAMIDES - A process for preparing polyamides by reacting starting monomers selected from dicarboxylic acids and diamines or salts of the dicarboxylic acids and diamines, amino carboxylic acids, amino nitriles, lactams and mixtures thereof, in the presence or absence of water and/or of functionalizing compounds capable of attaching to carboxyl or amino groups, comprises performing the reaction in an ionic liquid as solvent without use of additional accelerants which, based on the monomers, are present in an amount of more than 50 mol %. | 12-09-2010 |
20110092645 | CONTINUOUS METHOD FOR MULTI-STAGED DRYING AND SUBSEQUENT CONDENSATION OF A POLYAMIDE GRANULATE - A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises
| 04-21-2011 |
20110144300 | BATCH PROCESS FOR PREPARING POLYAMIDES - Polyamides based on dicarboxylic acids and on diamines are produced in a batch process by
| 06-16-2011 |
20110245366 | PROCESS FOR PREPARING POLYESTER ALCOHOLS AND USE THEREOF FOR PREPARATION OF POLYURETHANES - The invention relates to a process for preparing polyester alcohols by catalytically reacting at least one at least difunctional carboxylic acid or a derivative thereof with at least one at least difunctional alcohol, which comprises performing at least part of the reaction in the presence of microwave radiation. | 10-06-2011 |
20120065339 | PROCESS FOR PRODUCING POLYAMIDE THAT IS STABLE DURING PROCESSING - Process for producing polyamides that are stable during processing, by treating the polyamide during the solid-phase postcondensation process with a gas which comprises carrier gas (inert gas), water, and acid, or an anhydride or lactone or a mixture of these or, respectively, comprises ammonia, or amine, or a mixture of these, at a temperature from 130 to 200° C. and at a pressure of from 0.01 to 10 bar. | 03-15-2012 |
20120157594 | COPOLYAMIDES - What are described are a solution comprising a terpolymer formed from the monomers of components A, B and C, the total amount of which adds up to 100% by weight, | 06-21-2012 |
20120157654 | METHOD FOR THE DRYING AND POST-CONDENSATION OF POLYAMIDE PARTICLES - Method for the drying and post-condensation of polyamide particles, wherein the polyamide particles are irradiated with electromagnetic waves while passing an inert gas through the particles. | 06-21-2012 |
20120245308 | PROCESS FOR PREPARING POLYAMIDES - The present invention relates to a process for preparing a polyamide based on dicarboxylic acids and diamines, comprising the following stages:
| 09-27-2012 |
20130131305 | Simplified Production of Nylon-6 - A process for producing polyamides from the corresponding monomers and/or prepolymers comprises the steps of
| 05-23-2013 |
20130252874 | DETERGENT COMPOSITIONS COMPRISING GRAFT POLYMERS HAVING BROAD POLARITY DISTRIBUTIONS - The present invention relates to a detergent composition containing an amphiphilic graft polymer based on water-soluble polyalkylene oxides (A) as a graft base and side chains formed by polymerization of a vinyl ester component (B), where the polymer has a broad polarity distribution. | 09-26-2013 |
20130253089 | CONTINUOUS PROCESS FOR THE SYNTHESIS OF GRAFT POLYMERS BASED ON POLYETHERS - The invention relates to a continuous process for the preparation of amphiphilic graft polymers, wherein a vinyl ester component (B) composed of vinyl acetate and/or vinyl propionate (B1) and, if desired, a further ethylenically unsaturated monomer (B2), is polymerized in the presence of a polyalkylene oxide (A), a free radical-forming initiator (C) and, if desired, an additive (D), at a mean polymerization temperature at which the initiator (C) has a decomposition half-time of from 1 to 500 min, in at least one tubular reactor segment with a feed side and an outlet side, through which the reaction mixture comprising at least a part of component (A) to (C), and if desired (D), streams, a tubular reactor segment and the use of the inventive amphiphilic graft polymer. The invention further relates to an inventive amphiphilic graft polymer and the use thereof. | 09-26-2013 |
20140066588 | PRODUCTION OF POLYAMIDES BY POLYCONDENSATION - In a process for producing polyamides by polycondensation of polycondensable polyamide-forming monomers and/or oligomers in reaction mixtures comprising same, which may be water-containing but are free from organic solvents, the polycondensation is effected in an agitated reactor under agitation in a first step in the liquid phase and after a phase change taking place during the process in the same reactor is effected in a subsequent second step in the solid state, wherein the temperature in the reactor is below the melting point of the polyamide in the second step at least. | 03-06-2014 |
20140256887 | PREPARATION OF POLYAMIDES BY HYDROLYTIC POLYMIERIZATION AND MULTIPLE EXTRACTION - The present invention relates to a process for preparing polyamides, comprising a hydrolytic polymerization and at least two extraction steps which are not in immediate succession. | 09-11-2014 |
20140350213 | Purification of polyamide particles - The present invention relates to a process for purifying polyamide particles wherein these are contacted with a lactam-containing treatment medium with or without a gaseous treatment medium. | 11-27-2014 |
20150065677 | PROCESS FOR PRODUCING AROMATIC POLYETHER SULFONES - The process for producing aromatic polyether sulfones via reaction of a dichlorodiphenyl sulfone component with a bisphenol component as monomers in the presence of alkali metal carbonate in the melt in the absence of solvents and diluents comprises carrying out the reaction in a mixing kneader which is operated with a shear rate in the range from 5 to 500 s | 03-05-2015 |