An improved process of forming polyurea and chitosan microcapsules encapsulating a benefit agent is described. The process comprises forming a water phase comprising hydrolyzing chitosan in an acidic medium at a pH of 6.5 or less for an extended period and combining with a polyisocyanate. The reaction product of the hydrolyzed chitosan and polyisocyanate yields a microcapsule having improved release characteristics, with enhanced degradation characteristics in OECD test method 301B.

A core-shell microcapsule comprising a core containing a functional ingredient and a shell surrounding or at least partially surrounding said core, the shell comprising a thermosetting resin formed by the reaction of shell-forming monomers comprising a polyamine and a material comprising a plurality of olefinic double bonds capable of reacting with the polyamine.

To provide hollow silica particles having a dense silica shell layer.

A method for producing hollow silica particles, which comprises: adjusting the pH of an oil-in-water emulsion containing an aqueous phase, an oil phase and a surfactant to at most 3.0 and adding a first silica material to the oil-in-water emulsion, adding a second silica material to the emulsion having the first silica material added, at its pH of at least 8, in the presence of alkali metal ions, to obtain a hollow silica precursor dispersion, and obtaining a hollow silica precursor from the hollow silica precursor dispersion and obtaining hollow silica particles from the hollow silica precursor.

The present invention relates to the field of delivery systems. More specifically, the invention concerns microcapsules coated with a polysuccinimide derivative and can be used in several industries, in particular in the perfumery industry. Perfuming compositions and perfumed consumer products comprising these microcapsules are also objects of the invention.

Provided is biological magnetic microsphere, comprising magnetic microsphere body. Magnetic microsphere body comprises, on outer surface thereof, at least one polymer having linear backbone and side chain. End of linear backbone fixes to outer surface of magnetic microsphere body, other ends of polymer unattach to outer surface of magnetic microsphere body. Biotin links to terminal end of side chain of polymer of biological magnetic microsphere. Further provided are modification to, preparation method for, use of biological magnetic microsphere. Biological magnetic microsphere can be handled and used conveniently, rapidly disperse and rapidly precipitate in solution without need to use large-scale experimental equipment such as high-speed centrifuge, can be connected via biotin with purification element having selectivity (such as avidin, affinity protein, polypeptide/protein tag, etc.), is versatile in application and can be widely and massively used in separation and purification of target substance, such as protein, including but not limited to antibody.

A capsule comprising a capsule wall and an electrophoretic fluid encapsulated by the capsule wall. The capsule wall comprises a cross-linked nonionic, water-soluble or water-dispersible polymer. The electrophoretic fluid comprises a suspending fluid, first pigment particles, second pigment particles, and third pigment particles. In some embodiments, the electrophoretic fluid includes a fourth electrophoretic particle. The first, second, and third particles are electrically charged, suspended in the suspending fluid, and capable of moving through the suspending fluid upon application of an electric field to the capsule.

A capsule comprising a capsule wall and an electrophoretic fluid encapsulated by the capsule wall. The capsule wall comprises a cross-linked nonionic, water-soluble or water-dispersible polymer. The electrophoretic fluid comprises a suspending fluid, first pigment particles, second pigment particles, and third pigment particles. In some embodiments, the electrophoretic fluid includes a fourth electrophoretic particle. The first, second, and third particles are electrically charged, suspended in the suspending fluid, and capable of moving through the suspending fluid upon application of an electric field to the capsule.

The present invention relates to microcapsules with a core-shell or matrix morphology stabilized by cross-linked nanoparticles. A process for the preparation of said microcapsules comprising selecting internal crosslinking of a Pickering emulsion is also an object of the invention. Perfumed consumer products, in particular fine fragrance, home and personal care products are also part of the invention.

The present invention relates to microcapsules with a core-shell or matrix morphology stabilized by cross-linked nanoparticles. A process for the preparation of said microcapsules comprising selecting internal crosslinking of a Pickering emulsion is also an object of the invention. Perfumed consumer products, in particular fine fragrance, home and personal care products are also part of the invention.

The present invention proposes a production method for obtainment of three-dimensional closed graphene-based nano-/microstructures (10) using a coaxial multilayer core-shell production process (1000) comprising a coaxial flow system (100) having a first flow path (101) and a first fluid exit (1011) at an end of said first flow path; and a second flow path (102) circumferentially surrounding said first flow path (101), said second flow path having a second fluid exit (1021); wherein a first fluid (1) flows through the first flow path and exits through the first fluid exit (1011); and a second fluid (2) which is immiscible with the first fluid (1) under the conditions where said production method is conducted, flows through the second flow path (102) and exits through the second fluid exit (1021) such that the second fluid (2) circumferentially covers the first fluid (1) upon leaving the coaxial flow system (100); said second fluid (2) comprises a graphene-based material, a polymeric material and solvent.