BASF SE a German corporation Patent applications |
Patent application number | Title | Published |
20110118419 | Method for the Surface Post-Crosslinking of Water Absorbing Polymer Particles - A process for producing water-absorbing polymer particles, wherein the water-absorbing polymer particles are surface postcrosslinked with unsaturated fatty acids or derivatives thereof. | 05-19-2011 |
20100323885 | Process for Producing Re-Moisturised Surface-Crosslinked Superabsorbents - Re-moisturised, surface-crosslinked superabsorbents are produced using a process that comprises the steps of contacting a superabsorbent base polymer with an organic crosslinker and a polyvalent metal salt solution in the presence of an alcohol, heat-treating to produce a surface-crosslinked, dry superabsorbent and re-moisturising the surface-crosslinked dry superabsorbent. | 12-23-2010 |
20100272998 | Method for Producing Water-Absorbent Polymer Particles - A process for producing water-absorbing polymer particles, wherein a product stream comprising water-absorbing polymer particles is tested for nonferritic metallic impurities by means of an eddy current detector. | 10-28-2010 |
20100062932 | Method for Producing Water-Absorbent Polymer Particles by the Polymerization of Droplets of a Monomer Solution - A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, said monomer solution comprising at least one azo compound and at least one persulfate, the resulting polymer particles having a water content of at least 5% by weight, and being aftertreated thermally at a temperature of at least 100° C. for at least 5 minutes. | 03-11-2010 |
20100041847 | Production of Superabsorbent Polymers on a Continuous Belt Reactor - The invention relates to a process for production of superabsorbent polymers on a continuous belt reactor, wherein a continuous polymerization belt rests at least partly upon the upper surface of at least one continuous support belt and the at least one continuous support belt slides at least partly on a fixed surface. | 02-18-2010 |
20100041550 | Method for Producing White and Color-Stable Water-Absorbing Polymer Particles Having High Absorbency and High Saline Flow Conductivity - Water-absorbing polymeric particles are produced by polymerizing a monomer solution or suspension comprising at least one unsaturated carboxylic acid and at least one hydroquinone monoether, and coating the polymeric particles with at least one salt of a tervalent metal cation of a carboxylic acid and/or at least one basic salt of a tervalent metal cation. | 02-18-2010 |
20100041549 | Production of Superabsorbent Polymers - The invention relates to the production of superabsorbent polymers comprising conveying a polymer gel having acid groups on an oscillating conveyor belt to a continuous through-circulation belt dryer, wherein the belt speed of the conveyor belt is at least 0.4 m/s. | 02-18-2010 |
20090318582 | Method for Producing Water-Absorbing Polymer Particles by Polymerizing Droplets of a Monomer Solution - A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution, where the monomer solution comprises at least two initiators, one of the initiators is a peroxide with the exception of persulfate, and the molar ratio of peroxide to further initiator is at least 1:8, the water-absorbing polymer particles themselves, and hygiene articles comprising these water-absorbing polymer particles. | 12-24-2009 |
20090315204 | Method for Producing Polymer Particles by the Polymerization of Fluid Drops in a Gas Phase - A process for producing polymer particles by polymerizing liquid droplets in a gas phase by metering a liquid comprising at least one monomer from at least one feed by means of a multitude of bores into a reaction chamber comprising the gas phase, wherein ratio of length of the feed to greatest diameter of the feed in the region of the multitude of bores is at least 10. | 12-24-2009 |
20090312184 | Production of Superabsorbent Polymers on a Continuous Belt Reactor - The invention relates to the production of superabsorbent polymers on a continuous belt reactor, wherein the continuous belt rests at least partly upon at least one support belt and the at least one continuous support belt is a metallic belt with a basis weight of at least 1 kg/m | 12-17-2009 |
20090221746 | Neutralization Process - The invention relates to a neutralization process in which at least one ethylenically unsaturated carboxylic acid is preneutralized at least partly with a base, wherein the preneutralized solution is divided into at least two part-solutions and at least one part-solution is aftertreated so as to form part-solutions with different degree of neutralization and/or solids content, and also to an apparatus for carrying out the process. | 09-03-2009 |
20090022603 | Method for the Pneumatic Conveying of Water-Absorbent Polymer Particles - A process for pneumatic delivery of water-absorbing polymer particles, the compressor used for pneumatic delivery having a steep characteristic and the initial gas rate in the delivery corresponding to a Froude number of from 10 to 18. | 01-22-2009 |