Abstract: The present invention relates to compositions of spherical microparticles composed of a wall material and at least one cavity that comprises a gas and/or a liquid, which have pores on the surface thereof, wherein the spherical microparticles have a mean particle diameter of 10-600 ?m and wherein at least 80% of those microparticles, the particle diameter of which does not deviate from the mean particle diameter of the microparticles of the composition by more than 20%, each have on average at least 10 pores, the diameter of which is in the range from 1/5000 to ? of the mean particle diameter, and, furthermore, the diameter of each of these pores is at least 20 nm, wherein the wall material consists of a composition comprising at least one aliphatic-aromatic polyester, and the wall material has a solubility at 25° C. of at least 50 g/l in dichloromethane, a method for the preparation thereof and also the use thereof.

Abstract: A process for the preparation of microcapsules including (a) preparation of an aqueous biphasic system by mixing (i) component (a1) including a component A selected from polyethylene glycol vinyl acetate comb polymers, polycarboxylates, polyethers, polyaspartates, polyvinylpyrrolidone, polyamines, and polylysine; wherein component (a1) is a monophasic system at 23° C., and forms a monophasic system at 23° C. if mixed with water in the range of from 1:99 to 99:1 by weight, and (ii) component (a2) containing water and a water-soluble component B, wherein water-soluble component B is different from component A, and wherein (a2) is a monophasic system at 23° C., (iii) at least one monomer (a3), and (iv) optionally at least one initiator (a4), wherein (a1), (a2), (a3), and (a4) can be mixed together in any order or simultaneously, followed by (b) optionally shearing of the biphasic system to form an emulsion, and (c) polymerization of monomer (a3).

Abstract: The present invention relates to microcapsules comprising at least one polyethervinyl ester graftpolymer, at least one acrylic polymer, and water in the range of from 0.1% of weight to 0% of weight of the total polymer as well as to processes preparing the same.

Abstract: Microcapsules including a capsule shell and a capsule core are disclosed, as well as plant propagation materials including the microcapsules and a process for manufacturing the microcapsules. The capsule shell includes a polyester, and the capsule core includes a water-soluble pesticide and at least 10 wt % of water based on a total weight of the capsule core. A method for controlling undesired insect or mite attack, harmful fungi, and/or undesired vegetation, and/or for regulating the growth of crop plants is also disclosed, wherein the method includes application of the microcapsules. A method of using of the microcapsules to reduce volatility or leaching behavior of the pesticide is also disclosed.

Abstract: The present invention relates to a composition of spherical microparticles composed of a wall material and at least one cavity that comprises a gas and/or a liquid, which have pores on the surface thereof, wherein the spherical microparticles have a mean particle diameter of 10-600 ?m and wherein at least 80% of those microparticles, the particle diameter of which does not deviate from the mean particle diameter of the microparticles of the composition by more than 20%, each have on average at least 10 pores, the diameter of which is in the range from 1/5000 to 1/5 of the mean particle diameter, and, furthermore, the diameter of each of these pores is at least 20 nm, wherein the wall material consists of a composition comprising at least one aliphatic-aromatic polyester and at least one additional polymer, wherein the additional polymer is selected from the group consisting of polyhydroxy fatty acids, poly(p-dioxanones), polyanhydrides, polyesteramides, polysaccharides and proteins, to a method for the prepar

Abstract: The present invention relates to microcapsules comprising a capsule core and a capsule shell wherein the capsule shell comprises a core surrounding layer of a polyvinyl alcohol and an adjacent layer of a polyoxazoline, a process of their production and their use.

Abstract: An encapsulated perfume composition for use in personal care products adapted to be applied to, and left on, the skin or hair of a human or animal subject, said encapsulated perfume composition comprising one or more polyurea capsules having a volume average diameter of 20 to 90 microns, and a capsule shell weight, which is 5 to 40% based on the total weight of the capsules.

Abstract: The present invention relates to compositions of spherical microparticles composed of a wall material and at least one cavity that comprises a gas and/or a liquid, which have pores on the surface thereof, wherein the spherical microparticles have a mean particle diameter of 10-600 ?m and wherein at least 80% of those microparticles, the particle diameter of which does not deviate from the mean particle diameter of the microparticles of the composition by more than 20%, each have on average at least 10 pores, the diameter of which is in the range from 1/5000 to ? of the mean particle diameter, and, furthermore, the diameter of each of these pores is at least 20 nm, wherein the wall material consists of a composition comprising at least one aliphatic-aromatic polyester, and the wall material has a solubility at 25° C. of at least 50 g/l in dichloromethane, a method for the preparation thereof and also the use thereof.

Abstract: The application describes a process for the preparation of microcapsules, wherein the microcapsules have a volume average diameter d of 15 to 90 ??? and a percentage of the shell weight of 3 to 40%, with reference to the total weight of capsules, wherein the shell of the microcapsules comprises at least one polyurea and the core comprises at least one lipophilic component, comprising the step of adding hydroxyalkylcellulose to a dispersion of polyurea microcapsules, microcapsules and their uses.

Abstract: The application describes an aqueous dispersion of microcapsules, wherein the shell of the microcapsules comprises at least one polyuria and the core comprises one or more lipophilic components with the proviso that the core does not contain a fragrance, and having a percentage of the shell weight with reference to the total weight of the capsules of 5 to 40% and wherein the microcapsules have a volume average diameter of 15 to 90 ?m and the dispersion comprises hydroxyalkylcellulose and the use of such a dispersion.

Abstract: The application describes an aqueous dispersion of microcapsules, wherein the shell of the microcapsules comprises at least one polyurea and the core comprises one or more lipophilic components with the proviso that the core does not contain a fragrance, and having a percentage of the shell weight with reference to the total weight of the capsules of 5 to 40% and wherein the microcapsules have a volume average diameter of 15 to 90 ?m and the dispersion comprises hydroxyalkylcellulose and the use of such a dispersion.

Abstract: A process for producing microcapsules containing a shell and a core of a liquid water-insoluble material is disclosed. The microcapsules are prepared using a bifunctional isocyanate, an anionically modified diisocyanate, a bifunctional amine, and a protective colloid. The protective colloid is a polyvinyl alcohol copolymer having hydrolysis degrees from 85 to 99.9%.

Abstract: Provided herein are microcapsules comprising a capsule core and a capsule shell. The capsule shell includes a core surrounding a layer of a polyvinyl alcohol and an adjacent layer of a polyoxazoline, and the capsule core includes a water-insoluble pesticide. Further provided herein is a process for producing the microcapsule, including: a) preparation of an oil-in-water emulsion with a disperse phase which includes the pesticide and an aqueous continuous phase and the polyvinyl alcohol, and b) subsequent addition of one or more of the polyoxazoline. The process relates to a method of controlling phytopathogenic fungi, undesired plant growth, and/or undesired insect or mite attack, and/or for regulating the growth of plants, wherein the microcapsules act on the respective pests, their environment, the crop plants to be protected from the respective pest, on the soil, on undesired plants, on the crop plants, and/or on the environment of each plant.

Abstract: The present disclosure relates to microcapsules with shell and a core with an average particle size of the microcapsules in the range from 0.5 to 20 ?m, wherein the shell is a polyester and wherein the core material comprises an enzyme, a method of making the microcapsules and methods of using the microcapsules in the field of recovery of hydrocarbons from a subterranean formation.

Abstract: The present invention relates to microcapsules comprising a capsule core and a capsule shell wherein the capsule shell comprises a core surrounding layer of a polyvinyl alcohol and an adjacent layer of a polyoxazoline, a process of their production and their use.

Abstract: The application describes an aqueous dispersion of microcapsules, wherein the shell of the microcapsules comprises at least one polyurea and the core comprises one or more lipophilic components with the proviso that the core does not contain a fragrance, and having a percentage of the shell weight with reference to the total weight of the capsules of 5 to 40% and wherein the microcapsules have a volume average diameter of 15 to 90 ?m and the dispersion comprises hydroxyalkylcellulose and the use of such a dispersion.

Abstract: The application describes a process for the preparation of microcapsules, wherein the microcapsules have a volume average diameter d of 15 to 90 ??? and a percentage of the shell weight of 3 to 40%, with reference to the total weight of capsules, wherein the shell of the microcapsules comprises at least one polyurea and the core comprises at least one lipophilic component, comprising the step of adding hydroxyalkylcellulose to a dispersion of polyurea microcapsules, microcapsules and their uses.

Abstract: An encapsulated perfume composition in the form of a slurry comprising one or more core-shell capsules, dispersed in an aqueous dispersing medium, wherein the core contains a perfume and the shell contains a polyurea resin, and wherein the capsules are in the form of a stable suspension having a viscosity of up to 3000 centipoise, and more particularly about 150 to 3000 centipoise when measured on a rheometer, using rotating disks at a shear rate of 21 s?1 at a temperature of 25° C.

Abstract: The present invention relates to a process for producing microcapsules which contain a shell and a core of a liquid water-insoluble material, where (a) a premix (I) is prepared from water and a protective colloid; (b) a further premix (II) is prepared from the water-insoluble material and at least bifunctional isocyanate (A) or a mixture of two or more different isocyanates containing (A); (c) the two premixes (I) and (II) are mixed together until an emulsion is formed; (d) at least a bifunctional amine is then poured into the emulsion from step (c); and (e) the emulsion is then heated until the microcapsules are formed, and where the liquid water-insoluble material comprises a pesticide, where the protective colloid is a polyvinyl alcohol copolymer having hydrolysis degrees from 60 to 99.9%, and where the polyvinyl alcohol copolymer contains comonomers with anionic groups. Further subject matter are microcapsules obtainable by said process.

Abstract: The application describes a process for the producing microcapsules which contain a shell made of polyurea obtained in the presence of polyvinyl alcohol copolymers.