Provided are hollow particles each comprising a shell containing a resin and a hollow portion surrounded by the shell, wherein the resin is constituted by a shell polymer containing a cross-linkable monomer unit, the hollow particles have a true density of 1.18 g/cm.sup.3 or less, and C of the hollow particles calculated from Expression (1) below has a value of 1.16 or less:

[00001]$\begin{array}{cc}C=A\left(100-B\right)/100& \mathrm{Expression}\left(1\right)\end{array}$

where A represents the value (unit: g/cm.sup.3) of the true density of the hollow particles, and B represents the value (unit: mass %) of the proportion of a monofunctional monomer unit contained in the shell polymer.

Disclosed are coating compositions, methods for preparing the coatings and coatings made therefrom. The coatings have durable functional and damage healing properties. In some embodiments, compositions include a liquid media, surface modified diatomaceous earth (SMDE) particles chemically modified to impart a desired fluid wettability suspended in the liquid media, and microcapsules suspended in the liquid media. The SMDE particles are chemically modified through the use of various silanes imparting hydrophobicity, hydrophilicity, oleophobicity, or oleophilicity. In certain embodiments, the SMDE particles and the microcapsules are in different coating layers. In certain embodiments, compositions are in the form of powder coatings including mixtures of powder epoxy particles, SMDE particles chemically modified to impart a desired fluid wettability, and microcapsules. Disclosed further are methods for coating articles with the coatings and the coated articles.

An ultra-light polyurethane artificial leather composition comprises a one-component type blocked polyurethane high solid resin of 100 parts per weight, a capsule-type hollow microsphere of 1 to 10 parts per weight, a curing agent of 1 to 10 parts per weight, and a high solid type toner of 1 to 20 parts per weight.

Functionalized microspheres for being dispersed in matrix materials to reduce the density and weight of the materials may be configured to include a covalently bound surface component which is configured to covalently bond with the matrix material so that when combined with the matrix material a strong, light-weight matrix material may be produced.

To provide hollow particles from which a hydrophobic solvent included therein can be removed at low temperature. Hollow particles which comprise a shell containing a resin and a hollow portion surrounded by the shell, wherein a volume average particle diameter Dv is 1.0 m or more and 30.0 m or less; wherein the hollow particles have only one hollow portion in an interior thereof; and wherein a ratio (SA(m)/SA(t)) of a measured BET specific surface area SA(m) of the hollow particles to a theoretical BET specific surface area SA(t) calculated from an apparent density D.sub.1 of the hollow particles and the volume average particle diameter Dv, is 3.0 or more.

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.

A low dielectric resin composition for improvement of processability includes a resin system, a halogen-free flame retardant, hollow spherical silica, and a coupling agent. The resin system includes a polyphenylene ether resin, a crosslinking agent, and a vinyl-containing elastomer which are each added in a specific weight percentage. The hollow spherical silica has a specific gravity between 0.4 g/cm.sup.3 and 0.6 g/cm.sup.3 and an average particle size (D50) between 2.0 m and 3.0 m. Therefore, the low dielectric resin composition after being cured has a dielectric constant (Dk) between 2.75 and 3.05 and a dielectric loss factor (Df) of less than 0.002 at 10 GHz. Based on the above, a prepreg and a metal clad laminate applying the low dielectric resin composition are further provided.

Embodiments of the present disclosure generally relate to epoxy resin compositions and to uses thereof. In an embodiment is provided an epoxy resin composition that includes an epoxy resin; an impact modifier; a curing agent; a first filler; and a second filler, the second filler comprising a different filler than the first filler, the second filler having a different density than the first filler. In another embodiment is provided an article that includes a first component, a second component, and an epoxy resin composition described herein disposed between the first and second components.

Provided is a foaming curable composition containing a heat-curable elastomer (A), a chemical foaming agent (B), and expandable particles (C) having a shell and an encapsulated component, wherein the chemical foaming agent (B) contains a hydrazine-based foaming agent (B1), and the peak foaming temperature of the chemical foaming agent (B) is 5 C. to 50 C. higher than the peak expansion temperature of the expandable particles (C). This novel foaming curable composition has good foaming and adhesive properties, as well as good properties after standing uncured.

A binder for extruded, pelletized, briquetted, or agglomerated material, the binder having a composition including from 80% to 90% in weight of a pyrolysis oil resulting from the pyrolysis of biomass and from 10% to 20% in weight of thermoplastics.