Patent application number | Description | Published |
20090272506 | PAPERS WITH A HIGH FILLER MATERIAL CONTENT AND HIGH DRY STRENGTH - A process for producing paper, board and cardboard in the presence of an aqueous slurry of components comprising finely divided fillers coated at least partly with water-soluble amphoteric copolymers, which involves adding, further to the aqueous slurry of components comprising finely divided fillers, at least one cationic and/or amphoteric polymer comprising as structural element no esters of unsaturated carboxylic acids with quaternized amino alcohols to the fiber suspension prior to sheet forming. | 11-05-2009 |
20100179248 | AQUEOUS SLURRIES OF FINELY DIVIDED FILLERS, A PROCESS FOR THEIR PREPARATION AND THEIR USE FOR THE PRODUCTION OF PAPERS HAVING A HIGH FILLER CONTENT AND HIGH DRY STRENGTH - Aqueous slurries of finely divided fillers which are at least partly coated with a composition comprising at least one water-soluble amphoteric copolymer and at least one swollen starch. | 07-15-2010 |
20100181037 | AQUEOUS SLURRIES OF FINELY DIVIDED FILLERS, A PROCESS FOR THEIR PREPARATION AND THEIR USE FOR THE PRODUCTION OF PAPERS HAVING A HIGH FILLER CONTENT AND HIGH DRY STRENGTH - Aqueous slurries of finely divided fillers which are at least partly coated with a composition comprising at least one water-soluble amphoteric copolymer and at least one latex. | 07-22-2010 |
20100181038 | PREPARATION OF AQUEOUS SLURRIES OF FINELY DIVIDED FILLERS AND THEIR USE FOR THE PRODUCTION OF PAPERS HAVING A HIGH FILLER CONTENT AND HIGH DRY STRENGTH - Process for treating aqueous slurries of finely divided fillers, an aqueous dispersion of at least one latex and an aqueous slurry of at least one starch being metered separately from one another into an aqueous slurry of at least one finely divided filler. | 07-22-2010 |
20100186915 | PREPARATION OF AQUEOUS SLURRIES OF FINELY DIVIDED FILLERS AND THEIR USE FOR THE PRODUCTION OF PAPERS HAVING A HIGH FILLER CONTENT AND HIGH DRY STRENGTH - A process for treating aqueous slurries of finely divided fillers, wherein the treatment is carried out by heating an aqueous slurry of at least one finely divided filler and then by adding an aqueous dispersion of at least one latex. | 07-29-2010 |
20110048660 | PROCESS FOR THE PRODUCTION OF PAPER, BOARD AND CARDBOARD HAVING HIGH DRY STRENGTH - Process for the production of paper, board and cardboard having high dry strength by separate addition of a water-soluble cationic polymer and of an aqueous dispersion of a water-insoluble polymer having a content of acid groups of not more than 10 mol % or of an aqueous dispersion of a nonionic polymer, which dispersion has been made anionic, to a paper stock, draining of the paper stock and drying of the paper products. Preferably, the polymers are added to a paper stock which has a temperature of at least 40° C. | 03-03-2011 |
20110079365 | PRODUCTION OF PAPER - The use of water-soluble, amphoteric copolymers which are obtainable by copolymerization of
| 04-07-2011 |
20110100575 | AQUEOUS SUSPENSIONS OF FINE-PARTICULATE FILLERS, METHOD FOR THE MANUFACTURE THEREOF AND USE THEREOF FOR THE MANUFACTURE OF FLUID-CONTAINING PAPERS - Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex which comprises, incorporated in the form of polymerized units, at least one monomer comprising phosphonic and/or phosphoric acid groups, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock. | 05-05-2011 |
20110108226 | AQUEOUS SUSPENSIONS OF FINE-PARTICULATE FILLERS, METHOD FOR THE MANUFACTURE THEREOF AND USE THEREOF FOR THE MANUFACTURE OF FLUID-CONTAINING PAPERS - Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex with a glass transition temperature of −5 to −50° C., preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock. | 05-12-2011 |
20110230601 | AQUEOUS SUSPENSIONS OF FINE-PARTICULATE FILLERS, METHOD FOR THE MANUFACTURE THEREOF AND USE THEREOF FOR THE MANUFACTURE OF PAPERS CONTAINING FILLERS - An aqueous slurry of finely divided fillers which are at least partly coated with anionic latices, wherein the slurry is obtainable by treating an aqueous slurry of finely divided fillers with an aqueous dispersion comprising at least one anionic latex and at least one degraded starch, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock. | 09-22-2011 |
20110308752 | METHOD FOR PRODUCING PAPER, CARD AND BOARD WITH HIGH DRY STRENGTH - Process for the production of paper, board and cardboard having high dry strength by addition of a water-soluble cationic polymer and of an anionic polymer to a paper stock, draining of the paper stock and drying of the paper products, wherein an aqueous dispersion of at least one anionic latex and at least one degraded starch is used as the anionic polymer. | 12-22-2011 |
20120205065 | METHOD FOR PRODUCING PAPER, PAPERBOARD AND CARBOARD HAVING HIGH DRY STRENGTH - Process for the production of paper, board and cardboard having high dry strength by addition of an aqueous composition comprising a nanocellulose and at least one polymer selected from the group consisting of the anionic polymers and water-soluble cationic polymers, draining of the paper stock and drying of the paper products. | 08-16-2012 |
20120325420 | PRODUCTION OF PAPER, CARD AND BOARD - The invention relates to a process for the production of paper, card and board, including the steps of draining a filler-containing paper stock, having a certain fibrous concentration and containing at least one water-soluble amphoteric copolymer, with sheet formation in a wire section, then pressing the paper in a press section, diluting the paper stock to a fibrous concentration in the range from 5 to 15 g/l, draining the diluted paper stock to form a sheet, and then pressing the sheet in the press section to a solids content G(x) wt % or greater, such that G(x) computes according to: | 12-27-2012 |
20140053996 | PRODUCTION OF PAPER, CARD AND BOARD - The present invention relates to a process for production of paper, card and board comprising draining a filler-containing paper stock comprising at least one water-soluble polymer with sheet formation in the wire section and then pressing the paper in the press section, wherein a paper stock having a fibrous concentration in the range from 20 to 40 g/l has the at least one water-soluble polymer added to it, then the paper stock is diluted to a fibrous concentration in the range from 5 to 15 g/l, the diluted paper stock is drained to form a sheet and the sheet is pressed in the press section to a solids content G(x) wt % or greater and G(x) computes according to | 02-27-2014 |
20140102649 | METHOD FOR PRODUCING PAPER, PAPERBOARD AND CARDBOARD HAVING HIGH DRY STRENGTH - Process for the production of paper, board and cardboard having high dry strength by addition of an aqueous composition comprising a nanocellulose and at least one polymer selected from the group consisting of the anionic polymers and water-soluble cationic polymers, draining of the paper stock and drying of the paper products. | 04-17-2014 |