| Perstorp France Patent applications |
| Patent application number | Title | Published |
|---|
| 20120142831 | HIGH-GLOSS POLYURETHANE COATINGS PREPARED FROM ALLOPHANATE/POLYISOCYANATE HARDENER COMPOSITIONS - Hydrophilic hardener compositions include at least one hydrophobic polyisocyanate, the hydrophobic polyisocyanate containing one or more allophanate functional groups, and the allophanate functional groups being present in the hardener compositions in an amount at least equal to 6 mol % relative to the total number of moles of isocyanate monomers converted in the preparation of the hardener composition, and are useful for the preparation in aqueous phase of high-gloss polyurethane coating formulations. | 06-07-2012 |
| 20120016073 | METHOD FOR PREPARING AN ALLOPHANATE, ALLOPHANATE, AND LOW-VISCOSITY COMPOSITION CONTAINING THE ALLOPHANATE - A process for the preparation of an allophanate of one or more identical or different isocyanates, compositions obtained by the process, and uses of the compositions are disclosed. The process comprises reacting an isocyanate with at least one monoalcohol comprising an ether or polyether functional group in the presence of a bismuth-comprising catalyst and a metal compound as co-catalyst. | 01-19-2012 |
| 20110306786 | USE OF A PISTON REACTOR TO IMPLEMENT A PHOSGENATION PROCESS - A process for phosgenating an amine comprising employing a plug-flow type reactor with internal recycle is disclosed. The process can be continuous, which makes it possible to prepare, in a single stage, a (poly)isocyanate with a good yield, without formation of byproducts and on simplifying the plant in order to carry out the process so as to promote safety. | 12-15-2011 |
| 20110218314 | CONTINUOUS OLIGOMERIZATION OF ISOCYANATES - A process for oligomerizing isocyanates includes a step of continuous conversion of an isocyanate monomer into polyisocyanate containing carbamate and/or allophanate groups, in the presence of a catalyst, wherein the conversion step is carried out in a reactor having a specific heat exchange coefficient of greater than or equal to approximately 200 kW/m | 09-08-2011 |
| 20110065957 | SYNTHESIS OF BIURETS AND ISOCYANATES WITH ALKOXYSILANE FUNCTIONS, FORMULATIONS CONTAINING SAME AND USE THEREOF - The invention relates to a composition and a method of preparing one such composition and an isocyanatoalkoxysilane; the polyisocyanate composition contains at least two different oligomeric compounds comprising at least three units and at most five units selected from aminoalkylsilane units and diamine units and at least one function selected from isocyanate functions and from those derived therefrom, the aforementioned compounds having at least two aminoalkylsilane units and another compound having at least two diamine units; the invention is suitable for coatings. | 03-17-2011 |
| 20110046301 | SYNTHESIS OF URETHANES AND POLYURETHANES CATALYSED BY CARBENES - The present invention relates to a process for preparing a compound comprising at least a urethane group —HN—C(═O)—O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group —N═C═O is reacted with an organic compound (II) carrying at least a hydroxyl group —OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst. | 02-24-2011 |
| 20100273920 | NOVEL HYDRODISPERSIBLE POLYISOCYANATE COMPOSITIONS - The present invention relates to a composition comprising:
| 10-28-2010 |
| 20100145109 | METHOD FOR PREPARING DINITROTOLUENE - The present invention relates to a process for preparing dinitrotoluene. The process of the invention for preparing dinitrotoluene from mononitrotoluene, which comprises carrying out a mononitrotoluene nitration reaction using a nitrating mixture comprising nitric acid, sulphuric acid and water resulting in a two-phase medium and separating the organic and aqueous phases of said two-phase medium, is characterized in that the mononitrotoluene nitration is carried out using a nitrating mixture comprising at most 10% by weight of water resulting in a two-phase medium, in that the organic and aqueous phases of said two-phase medium are separated, and in that the aqueous phase derived from the separating operation is recycled, at the end of the mononitrotoluene nitration reaction and before the separation of the organic and aqueous phases, such that the weight ratio of the aqueous phase to the organic phase is at least equal to 1.2. | 06-10-2010 |
| 20100137507 | Composition Containing A Modified (Poly) Isocyanate And A Solvent Of The Acetal Or Aliphatic Ketone Type, And Use Of Said Composition For Producing Coatings - The invention relates to a modified (poly)isocyanate composition that contains a modified (poly)isocyanate and at least one solvent. The invention also relates to the use of this composition for preparing coatings such as paints and varnishes. | 06-03-2010 |
| 20100137483 | Mixture Based on a Polyisocyanate and a Solvent of Ether Ester Type, Aqueous Emulsion Obtained from this Mixture and Use of this Emulsion for the Manufacture of Coatings and Adhesives - The mixture of the invention comprises at least one cycloaliphatic polyisocyanate and at least one solvent comprising an ester function and an ether function. An aqueous emulsion can be obtained from this mixture which also comprises a compound bearing a function with a mobile hydrogen, selected from primary or secondary hydroxyl functions, phenol functions, primary and/or secondary amino functions, carboxylic functions and a thiol function or a compound containing precursor functions capable of freeing hydroxyl functions. The emulsion can be used for the manufacture of coatings on a substrate of cement, of wood or especially of leather, and also for the manufacture of adhesives. | 06-03-2010 |
