摘要:
The use of at least one diazonium salt bearing an initiator function, for forming an undercoat obtained by grafting a graft derived from the diazonium salt and bearing an initiator function at the surface of a conductive or semiconductive material on the undercoat, and for forming on the undercoat a polymeric layer obtained by polymerization, in particular free radical polymerization, in situ of at least one monomer, initiated from the initiator function.
摘要:
The use of at least one diazonium salt bearing an initiator function, for forming an undercoat obtained by grafting a graft derived from the diazonium salt and bearing an initiator function at the surface of a conductive or semiconductive material on the undercoat, and for forming on the undercoat a polymeric layer obtained by polymerization, in particular free radical polymerization, in situ of at least one monomer, initiated from the initiator function.
摘要:
The use of at least one diazonium salt bearing an initiator function, for forming an undercoat obtained by grafting a graft derived from the diazonium salt and bearing an initiator function at the surface of a conductive or semiconductive material on the undercoat, and for forming on the undercoat a polymeric layer obtained by polymerization, in particular free radical polymerization, in situ of at least one monomer, initiated from the initiator function.
摘要:
The invention concerns the use of at least one diazonium salt bearing an initiator function, for forming an undercoat obtained by grafting a graft derived from said diazonium salt and bearing an initiator function at the surface of a conductive or semiconductive material on said undercoat, and for forming on said undercoat a polymeric layer obtained by polymerization, in particular free radical polymerization, in situ of at least one monomer, initiated from said initiator function.
摘要:
The present invention relates to a dispersion of polymer particles in a liquid carbon-based medium, the said particles having a flexible polymeric core and being surface-stabilized with a block stabilizing polymer comprising at least one block that is soluble in the said carbon-based medium and at least one block that is insoluble in the said carbon-based medium.The invention also relates to a cosmetic composition comprising the said dispersion, and to a cosmetic treatment process using the said composition.
摘要:
The present invention relates to a dispersion of polymer particles in a liquid carbon-based medium, the said particles having a flexible polymeric core and being surface-stabilized with a block stabilizing polymer comprising at least one block that is soluble in the said carbon-based medium and at least one block that is insoluble in the said carbon-based medium.The invention also relates to a cosmetic composition comprising the said dispersion, and to a cosmetic treatment process using the said composition.
摘要:
The invention relates to a process for the preparation of an aqueous dispersion of polymer particles in an aqueous medium employing a living macroinitiator requiring a reinitiation temperature of less than 100° C.Application of the particles obtained in the field of surface coatings.
摘要:
The invention relates to a process for the preparation of an aqueous dispersion of polymer particles in an aqueous medium employing a living macroinitiator requiring a reinitiation temperature of less than 100° C.Application of the particles obtained in the field of surface coatings.
摘要:
The invention relates to polymer particles in the form of filaments formed by block copolymers, as well as to the method for preparing same by means of controlled radical polymerization in emulsion in the presence of a specific living macroinitiator derived from a nitroxide. The invention is characterized in that the filamentous particles are obtained in a dispersed aqueous medium by means of the synthesis of said block copolymers, performed by heating the reaction medium at a temperature of 60 to 120° C., the final block copolymer containing between 10 and 50 mol. % of the macroinitiator which is water soluble and the hydrophobic monomer conversion rate being at least 50%. According to the invention, the weight ratio of hydrophilic fraction of the filamentous particles is less than 25 wt %.
摘要:
The invention relates to polymer particles in the form of filaments formed by block copolymers, as well as to the use thereof as rheology modifiers for aqueous or organic solutions. A first aspect of the invention relates to filamentous polymer particles having a length/diameter ratio greater than 100, said particles being formed by block copolymers synthesized by controlled radical emulsion polymerization in emulsion, performed using at least one hydrophobic monomer in the presence of a water-soluble marcoinitiator. The invention is characterized in that the filamentous particles are obtained in an aqueous medium for the synthesis of said block copolymers, performed by heating the reaction medium to a temperature of 60 to 120° C., the final block copolymer containing between 10 and 50 mol. % of the water-soluble macroinitiator and the hydrophobic monomer conversion rate being at least 50%. A second aspect of the invention relates to a method for modifying the rheology of an organic or aqueous solution using said filamentous polymer particle.