COMPOSITION CONTAINING GRAPHENE AND GRAPHENE NANOPLATELETS AND PREPARATION PROCESS THEREOF

• Main Authors: Riccardo FELISARI, Viviana AUTIERI
• Format: Patent
• Language: English; Spanish
• Published: 04.07.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The present invention relates to a composition containing graphene and grafene nanoplatelets durably dispersed in a solvent. Said composition is characterized in that it contains at least 1% by weight, with respect to the total weight of the solvent, of a vinyl aromatic polymer and comprises a mass concentration of graphene and graphene nanoplatelets (GRS) ranging from 0.001% to 10% by weight with respect to the total weight of the solvent. The vinyl aromatic polymer present in the composition is obtained by partial or total polymerization of the relative vinyl aromatic monomer alone or mixed with up to 50% by weight of further copolymerizable monomers. The composition must satisfy the condition that the sum of the possible content of non-reacted monomers and the content of vinyl aromatic polymer formed is equal to at least 10% by weight with respect to the total weight of the solvent. La presente invención se refiere a una composición que contiene grafeno y nanoplaquetas de grafeno dispersadas de forma duradera en un solvente. La composición se caracteriza porque contiene al menos 1% en peso, con respecto al peso total del solvente, de un polímero aromático de vinilo y comprende una concentración másica de grafeno y nanoplaquetas de grafeno (GRS) que abarca de 0.001% a 10% en peso con respecto al peso total del solvente. El polímero aromático de vinilo presente en la composición se obtiene mediante polimerización parcial o total del monómero aromático de vinilo relativo por sí solo o mezclado con hasta 50% en peso de monómeros copolimerizables adicionales. La composición debe satisfacer la condición de que la suma del posible contenido de monómeros sin reaccionar y el contenido de polímero aromático de vinilo formado sea igual a al menos 10% en peso con respecto al peso total del solvente.