Disclosed are a hollow mesoporous organic silica nano/microparticle having metal particles deposited thereon, and a method for preparing the same of the present disclosure. The method may prepare a spherical nanoparticle by coating a porous organic silica layer on an inorganic silica particle having the metal particles deposited thereon and via selective etching of the layer. In addition, two or more types of metals pre-synthesized together with a magnetic particle, or different shapes of metals may be deposited on the nanoparticle at a target concentration. Thus, the nano/microparticle may be used for a drug delivery matrix, a catalyst, and a photothermal effect.

An insulation medium invention includes a plurality of microspheres. Each microsphere comprises a porous core comprising a porous core material and having an exterior surface, a gas within the porous core, and a coating layer coating all of the exterior surface of the porous core. The coating layer comprises a coating material which transitions from a first state to a second state. In the first state, the coating material is permeable to the gas. In the second state the material is impermeable to the gas. The coating material in the second state is configured to encapsulate and maintain partial vacuum of the gas inside the porous core. In one embodiment, in the second state the coating is impermeable to air. Insulated structures, a method of making an insulation medium, a fluid storage media, and a method of delivering a fluid are also disclosed.

The invention relates to a method for making a core-composite shell microcapsule slurry for the delivery of hydrophobic active ingredients such as fragrance components of perfume oils. The method includes forming an outer shell by coacervation surrounding an internal phase which contains the hydrophobic active ingredient; and forming an inner shell by interfacial polymerization at the interface between the internal phase and the outer shell. The internal phase contains the hydrophobic active ingredient. The microcapsules are typically incorporated in a consumer product wherein the composite shell prevents the hydrophobic active ingredient from release until desired, generally during use of the consumer product.

Hollow particles each having a shell composed of at least one layer, wherein the at least one layer contains a nitrogen atom-containing resin having a refractive index of 1.57 or less.

Novel articles of manufacture are described based on a combination of an adjunct material and microcapsules made by an improved process. The improved microcapsules are chitosan urea and encapsulate a benefit agent. The process comprises combining an adjunct material formed of microcapsules formed by 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.

The wet adhesion of a coating composition may be improved through the use of voided latex particles as opacifying agents which contain a hollow interior as well as an outer shell of a polymer containing functional groups such as amino, 1,3-diketo, urea or ureido. Other types of functional groups may be introduced to the outer shell polymer in order to vary other desired characteristics of the coating. The voided latex particles are non-film-forming.

Disclosed is a microcapsule containing: (i) a microcapsule core having an active material, and (ii) a microcapsule wall formed of a first polymer and second polymer. The first polymer is a sol-gel polymer. The second polymer is gum arabic, purity gum ultra, gelatin, chitosan, xanthan gum, plant gum, carboxymethyl cellulose, sodium carboxymethyl guar gum, or a combination thereof. The weight ratio between the first and second polymer is 1:10 to 10:1. Also disclosed are processes for preparing the microcapsule and uses of the microcapsules in consumer products.

The present invention relates to a process for the preparation of polyurea/polyurethane microcapsules enclosing at least one lipophilic active ingredient, preferably perfume- or aroma-containing polyurea/polyurethane microcapsules, which can be carried out independently of pH compared to the processes for the preparation of polyurea/polyurethane microcapsules of the prior art. In addition, the present invention relates to polyurea/polyurethane microcapsules obtainable by the process of the invention. In another aspect, the invention described herein relates to the use of such microcapsules or microcapsule dispersions for the manufacture of household products, textile care products, detergents, fabric softeners, cleaning products, scent boosters, scent lotions and fragrance enhancers, cosmetics, personal care products, agricultural products, pharmaceutical products, print coatings for paper and the like. Ultimately, the present invention relates to consumer products comprising such polyurea/polyurethane microcapsules.

The present invention relates to a process for the preparation of biodegradable microcapsules, in particular biodegradable protein- and/or polysaccharide-based microcapsules, as well as dispersions of such microcapsules (microcapsule slurry) that enclose at least one hydrophobic active ingredient. In addition, the present invention relates to biodegradable microcapsules obtainable by the process according to the invention. In another aspect, the present invention relates to the use of the microcapsules and dispersions as an ingredient in consumer products.

The invention provides a process for preparing core-shell composite particles comprising a polyester, polymerized ethylenically unsaturated silane compounds, and optionally a hydrophobic surface treatment. The invention further provides a composite particle comprising a polyester and a radically polymerized ethylenically unsaturated silane compound.