Patent application number | Description | Published |
20080200583 | Water-Soluble or Water-Swellable Polymers, Particularly Water-Soluble or Water-Swellable Copolymers Made of Acrylamide and at Least One Ionic Comonomer Having a Low Residual Monomer Concentration - The invention relates to a process for the production of water-soluble or water-swellable polymers having a low content of residual monomers, particularly on the basis of acrylic acid and/or acrylamide and at least one additional water-soluble comonomer, in which process a monomer solution in a polymerizing state is treated with electromagnetic radiation at the earliest after reaching the maximum temperature of polymerization, and the gel obtained is subsequently crushed and dried, and it also relates to the water-soluble or water-swellable polymers as such, which can be obtained according to said process, to their use in the hygiene industry, packaging industry, in the agrarian technology or in agriculture and horticulture, in the cable industry and information technology, in the food industry, papermaking industry, and to their use as flocculation aids and as drilling fluid in petroleum production. | 08-21-2008 |
20100087569 | Hydrophobically Modified Cationic Copolymers - The invention relates to a hydrophobically modified cationic copolymer which has at least three different structural units. Particularly in combination with anionic surfactants, a considerable improvement in the water retention in aqueous building material systems based on hydraulic binders, such as cement, can be achieved even in the case of high salt loads. | 04-08-2010 |
20100190888 | Polymer-Tempered Construction Material Mixtures - The invention relates to polymer-modified cement-containing building material dry mixes which contain a redispersible polymer powder, water retention agents based on polysaccharide structures, a calcium-containing setting accelerator and a superabsorbent copolymer. | 07-29-2010 |
20110015301 | MIXTURES COMPRISING BRANCHED OLIGOMERIC OR POLYMERIC COMPOUNDS, AND PREPARATION AND USE THEREOF - Mixtures comprising
| 01-20-2011 |
20110095227 | RETARDED SUPERABSORBENT POLYMERS - What is claimed is a superabsorbent polymer (SAP) with anionic and/or cationic properties and retarded swelling action, which was prepared by polymerizing ethylenically unsaturated vinyl compounds. This SAP is characterized in that its swelling begins no earlier than after 5 minutes and in that it was prepared with the aid of at least one process variant selected from the group of
| 04-28-2011 |
20110237468 | METHODS FOR BLOCKING UNDERGROUND FORMATIONS - A process is proposed for blocking underground formations in the extraction of fossil oil and/or gas, a first step involving introducing water-absorbing particles into liquid-bearing and porous rock formations, said particles being water-swellable, crosslinked and water-insoluble polymers, said particles in the water-bearing rock formation finally preventing liquid flow through the rock layers by water absorption. This process is characterized in that the absorbing particles comprise a superabsorbent polymer with anionic and/or cationic properties and a retarded swelling action. This process, which can also be carried out in saline formation waters, is notable in that the swelling of the superabsorbents used begins no earlier than after five minutes and in that the superabsorbents are obtainable by four proposed process variants and any combination thereof. This process, which does not need a carrier liquid, is notable for its simplicity and especially the controllable retardation of the swelling action under the specific conditions of underground rock formations. | 09-29-2011 |
20130075646 | HEAT STORAGE COMPOSITION COMPRISING SODIUM SULFATE DECAHYDRATE AND SUPERABSORBENT - The present invention relates to a heat storage composition comprising
| 03-28-2013 |
20130098271 | DRY MORTAR MIXTURE - A dry mortar mixture based on at least one hydraulic and/or latently hydraulic binder which in the made-up and not yet cured state has firm properties is claimed. The novel dry mortar mixture is characterized in that it contains at least one representative of a dispersant and at least one compound having superabsorbent properties. This mixture makes it possible to carry over the advantages of known tile adhesives for horizontal application to vertical application possibilities. | 04-25-2013 |
20130105727 | HEAT STORAGE COMPOSITION COMPRISING A CATIONIC POLYELECTROLYTE AND CALCIUM CHLORIDE HEXAHYDRATE | 05-02-2013 |
20130274369 | NEW CATIONIC POLYMERS - New water soluble cationic copolymers derived from N-vinyl amide monomers and ethylenically unsaturated compounds bearing cationic groups. | 10-17-2013 |
20150087796 | NEW CATIONIC POLYMERS - New water soluble cationic copolymers derived from N-vinyl amide monomers and ethylenically unsaturated compounds bearing cationic groups. | 03-26-2015 |