The present invention relates to benefit agent containing delivery particles, compositions comprising said particles, and processes for making and using the aforementioned particles and compositions. When employed in compositions, for example, cleaning or fabric care compositions, such particles increase the efficiency of benefit agent delivery, there by allowing reduced amounts of benefit agents to be employed. In addition to allowing the amount of benefit agent to be reduced, such particles allow a broad range of benefit agents to be employed.

Benefit agent containing delivery particle

The manufacture of microencapsulated phase change materials suitable for the design of thermally enhanced fabrics

A thermal recording material comprising a support and, sequentially superimposed thereon, an undercoating layer, which contains a pigment and a binder as main components, and a thermal recording layer, which contains an achromatic or hypochromic basic colorless dye and a developer capable of reacting with the basic colorless dye to thereby realize color formation as main components, wherein the undercoating layer comprises a carboxymethylcellulose exhibiting an etherification degree of 0.55 to 0.75. Causing the undercoating layer to further contain hydroxymethylcellulose is preferred from the viewpoint of high effectiveness.

Thermal recording material

The invention involves a method for making uniformly sized particles from solid compounds. First, a suitable solid compound is dissolved in a suitable solvent. Then, a precipitating liquid is infused, precipitating non-aggregated particles with substantially uniform mean diameter. The particles are then separated from the solvent. Depending on the solid compound and the desired particle size, the parameters of temperature, ratio of non-solvent to solvent, infusion rate, stir rate, and volume can be varied according to the invention. The precipitating liquid may be aqueous or non-aqueous, depending upon the relative solubility of the compound and the desired suspending vehicle.

Method for making uniformly-sized particles from insoluble compounds

The invention concerns microcapsule preparations containing microcapsules that have a core made of a hydrophobic material including at least one odorous or scent substance and a capsule envelope, which can be obtained by i) radical polymerization of ethylenically unsaturated monomers comprising 30 to 100 weight percent of one or more C1-C24-alkylester of acrylic and/or methacrylic acid, 0 to 70 weight percent of one bifunctional or polyfunctional monomer, 0 to 40 weight percent of other monomers or ii) acid-induced condensation of melamine formaldehyde precondensates and/or the C1-C4-alkylethers thereof. The invention also concerns detergent or cleaning agent compositions containing said microcapsules.

Microcapsule preparations and detergents and cleaning agents containing microcapsules

A pressure-sensitive recording sheet which forms a colored image by the reaction of an electron donating color former with an electron accepting developer, comprising a support having provided thereon a micro-encapsulated electron donating color former and an electron accepting developer is disclosed, wherein one or more layers containing the microencapsulated electron donating color former contains at least one pigment having a pH of 8.5 or more.

Pressure sensitive recording sheet

A method for preparing microcapsules comprising polymerizing urea and formaldehyde in the presence of an anionic polyelectrolyte and an ammonium salt of an acid and forming a wall membrane of a urea/formaldehyde resin around droplets of a hydrophobic oily liquid.

Method for preparing microcapsules

In a process for producing oil-containing microcapsules by coacervation comprising A. introducing a fine powder or hydrophobic liquid into a high molecular weight electrolytic wall-forming colloid; B. coacervating the resulting dispersion or emulsion; C. cooling the resulting coacervate to gel it and form the wall of said microcapsules; and D. hardening said wall of said microcapsules; the improvement which comprises adding a phenolic compound to the system.

Process for the production of oil-containing microcapsules

A process for producing microcapsules of fine oil droplets having strong protective shells by dispersing or emulsifying finely in a polar solvent an oily liquid containing a polyisocyanate adduct having a free isocyanate group and adding to the dispersion or emulsion of the oil droplets a polyamine or a polyamine adduct having a free amino group as a polymerization promotor, whereby the polymerization of the polyisocyanate adduct is caused from the outer side of each oil droplet to encapsulate the oil droplet by the insolubilized polyisocyanate adduct. By this process the size of the microcapsules can be controlled quite easily.

Process for producing fine oil-containing microcapsules having strong protective shells and microcapsules produced thereby

In a process for producing microcapsules which comprises microencapsulating hydrophobic oil droplets by complex coacervation using at least two hydrophilic colloids having opposite electric charges and being ionizable in water with at least one of the colloids being gellable, the improvement comprising hardening the coacervate wall by the presence of an oxidation product of a polysaccharide as a hardening agent and adjusting the pH.

Hiroharu Matsukawa

Papers

Pressure sensitive recording sheet

Method for preparing microcapsules

Process for the production of oil-containing microcapsules

Process for producing fine oil-containing microcapsules having strong protective shells and microcapsules produced thereby

Process for hardening microcapsules