Recticel Patent applications |
Patent application number | Title | Published |
20130172437 | PROCESS FOR THE PREPARATION OF FLEXIBLE POLYURETHANE FOAM AND FOAM OBTAINED THEREBY - The present invention is directed to a process for the preparation of a flexible polyurethane foam and to the polyurethane foam prepared by that process. The foam is in particular a flexible polyurethane foam which has a density of between 25 and 120 kg/m | 07-04-2013 |
20120289621 | METHOD FOR FUNCTIONALISING A THERMOSET, CROSSLINKED ISOCYANATE-BASED POLYMERIC SOLID MATERIAL - The invention relates to a method for functionalising a thermoset, crosslinked isocyanate-based polymeric solid material which is made of isocyanate and isocyanate reactive components, at least one of which comprises an anchor component which has at least one anchor group. The anchor groups on the solid material are formed by terminal alkene and/or alkyne groups. To functionalise this polymeric solid material it is brought in contact with a solution which contains at least one functional component. This functional component comprises at least one thiol group and is allowed to bind covalently to the polymeric solid material by a free-radical addition reaction between the thiol groups on the functional component and the terminal alkene and/or alkyne anchor groups on the undissolved solid material. An effective functionalisation of the polymeric material can thus be achieved notwithstanding the heterogeneous reaction conditions. | 11-15-2012 |
20120238656 | PROCESS FOR THE PREPARATION OF FLEXIBLE POLYURETHANE AND FOAM OBTAINED THEREBY - The present invention is directed to a process for the preparation of a flexible polyurethane foam and to the polyurethane foam prepared by that process. The foam is in particular a flexible polyurethane foam which has a density of between 25 and 120 kg/m | 09-20-2012 |
20120041090 | PROCESS FOR PREPARING A FLEXIBLE POLYURETHANE FOAM - The process comprises preparing a reaction mixture from a polyisocyanate component and from a polyol component which comprises one or more polyester polyols formed from at least one dimer fatty acid and/or at least one dimer fatty alcohol. In order to improve the processability of the polyurethane flexible foams so that these foams can be produced with the desired hardness and mechanical properties over a broad density range, the isocyanate reactive compounds contain, per 100 parts by weight thereof, 25 to 95 parts by weight of said polyester polyols and 5 to 75 parts by weight of one or more polyether polyols which are free of dimer fatty chains. In this way, no lipophilic filler is needed so that the fogging and emission properties of the foam can be improved. Moreover, softer foam can be produced without having to apply a too low NCO index resulting in better mechanical properties and in particular in a lower compression set. Finally, higher foam densities can be achieved with an isocyanate component having a lower functionality so that the hardness of these foams can be reduced. | 02-16-2012 |
20110166244 | PROCESS FOR THE PREPARATION OF FLEXIBLE, RESILIENT POLYURETHANE FOAM AND THE RESULTING FOAM - The flexible, resilient polyurethane foam is prepared by reacting at least one polyisocyanate with one or more liquid compounds which have at least two isocyanate reactive groups and at least one of which contain one or more solid polymers stably dispersed therein in an amount of 2.5 to 35 parts per 100 parts of said liquid isocyanate reactive groups containing compounds. The wet compression set of the flexible polyurethane foam could be considerably reduced by including in said liquid isocyanate reactive groups containing compounds, per 100 parts thereof, (I) 50 to 80 parts of one or more polyoxyalkylene polyols having an oxyethylene unit content of at least 40 wt. %, a hydroxyl number of between 20 and 100, and a nominal functionality of 2 to 4; and (II) 20 to 50 parts of one or more further polyoxyalkylene polyols containing no oxyethylene units or having an oxyethylene unit content lower than 40 wt. %, and having a hydroxyl number of between 20 and 100 and a nominal functionality of 2 to 4. | 07-07-2011 |
20100243128 | PROCESS FOR THE PRODUCTION OF A FOAMED ARTICLE - The foamed article is produced starting from a core layer ( | 09-30-2010 |