Abstract: A silica-based stationary phase for chromatography columns and the methods of preparing such. More particularly, but not by way of limitation, a silica-based stationary phase that is substantially free of polyethers (e.g., polymer glycols). Also, a chromatography column comprising a silica-based stationary phase substantially free of polyethers (e.g., polymer glycols) within its channels as either a thin-film coating and/or a monolith and/or a monolithic coating. More particularly, a micro-electro-mechanical system (MEMS) chromatograph comprising a silica-based monolith substantially free of polyethers (e.g., polymer glycols) as the stationary phase within the micro-channels of the column.
Type:
Grant
Filed:
November 5, 2015
Date of Patent:
November 8, 2022
Assignees:
GEOSERVICES EQUIPEMENTS, LA SOCIETE DES AMIS DE L'ECOLE SUPERIEURE DE PHYSIQUE ET CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS
Abstract: The invention relates to a surface treatment method for treating the inner walls of a microchannel made from a polymeric material that is at least partially photocured or thermoset. Said treatment is carried out via irradiation in the air at a wavelength of less than or equal to 300 nm. The invention also relates to a method for manufacturing a microfluidic device including such a surface treatment step.
Type:
Grant
Filed:
March 11, 2013
Date of Patent:
December 25, 2018
Assignees:
TOTAL PETROCHEMICALS, ECOLE SUPERIEURE DE PHYSIQUE ET CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS
Inventors:
Ammar Azioune, Denis Bartolo, Bertrand Levache, Vincent Studer
Abstract: The present invention concerns an aqueous dispersion of multiphase polymer particles in which the polymer particles comprise at least two separate phases, the internal phase being formed by polymerization in the presence of a crosslinking agent, said dispersion further comprising a surfactant chosen from amino acid derivatives. The invention also concerns a film-forming composition comprising said aqueous dispersion of polymer particles. The invention also relates to a film obtained after application of said film-forming composition. This film dries very quickly, is water resistant, and has good adhesion, elasticity and breaking strength properties. The invention also concerns the use of said film for protecting surfaces of the skin or mucous membranes, wounds, injuries and/or skin disorders.
Type:
Grant
Filed:
June 7, 2013
Date of Patent:
May 9, 2017
Assignees:
Vivatech, Centre National de la Recherche Scientifique—CNRS, Ecole Superieure de Physique et Chimie Industrielles de la Ville de Paris
Abstract: The invention relates to a method which comprises emitting ultrasound into a liquid mixture containing first and second reagents in separate phases initially separated by a liquid precursor-gas barrier, the ultrasound having a high enough energy level to vaporize the precursor gas, such as to contact the reagents and thus to activate a chemical reaction therebetween.
Type:
Grant
Filed:
January 3, 2014
Date of Patent:
January 17, 2017
Assignees:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, ECOLE SUPERIEURE DE PHYSIQUE ET CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS, INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE)