A core/shell polymer material suitable for three-dimensional printing is provided. The core/shell polymer material may include at least one amorphous polymer as a core particle and at least one semicrystalline polymer as a shell material surrounding the core particle.

A method of recycling a polymer structure includes converting a first polymer structure into feedstock. The first polymer structure comprises particles that are bonded to one another by chemical click bonds to form a first shape. The first polymer structure is converted into feedstock particles by breaking the click bonds. The feedstock particles are formed into a second shape, and the feedstock particles are chemically click-bonded together to form a second polymer structure having a second shape. Breaking the click bonds may include heating the particles. The structures may be formed by causing first particles having dienes to chemically bond to dienophiles of second particles.

The present invention provides a multi-phase structured UV-curable powder coating resin and a preparation method thereof, comprising (1) obtaining an emulsion of a liquid UV resin by heating the liquid UV resin and an emulsifier, dispersing, and adding deionized water for emulsification; (2) melting and dispersing a solid UV resin, a phase change agent, an emulsifier, and deionized water; adding the emulsion of the liquid UV resin with stirring to thoroughly mix; temperature is lowered during the stirring to obtain a suspension; (3) press filtering the suspension of the UV-curable powder coating resin to obtain a filter cake; (4) drying and classifying the filter cake to obtain the multi-phase structured UV-curable powder coating resin. The multi-phase structured UV-curable powder coating resin is prepared from the aforementioned method. The present disclosure has the properties of both the liquid and solid UV resin and can be sprayed as a powder coating.

The present disclosure relates to an artificial waterproof granular material and a method for making the same. The granular material is formed from the following ingredients in parts by weight: 4.5 to 9.5 parts of a polyurethane resin, 3 to 5 parts of a modified polyurethane resin, 90 to 95 parts of a filler, 0.3 to 0.7 parts of a plasticizer, 0.3 to 0.7 parts of a coupling agent, 0.1 to 0.8 parts of a coloring agent, 1.5 to 2.5 parts of a metal organic frameworks material Ag-MOFs, and 0.5 to 2.0 parts of an additional additive.

The present disclosure provides for articles formed of a filled polymeric resin material. More specifically, the present disclosure relates to polymeric resin materials that include a filler that includes of a mixture of cured rubber granules, foam granules, and/or textile fibers. The filler can be suspended in and/or encapsulated by the polymeric resin material. The polymeric resin material, the filler, or both can include waste or scrap material from manufacturing or from ground post-consumer waste.

A three-dimensional object is formed by 3D printing, especially by a binder jetting method, in which particulate material in a powder bed is bonded by a printed adhesive. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers. Powder bed compositions comprising core-(shell)-shell particles can be used for 3D printing, wherein the core-(shell)-shell particles can swell in contact with the binder during the printing operation.

Disclosed are a chemically asymmetric anisotropic powder, a stabilized water-in-oil (W/O) emulsification composition containing the same, and a method for preparing the same. The composition contains a chemically asymmetric anisotropic powder that forms emulsification particles with a stabilized interface film and various sizes, thereby providing a stabilized W/O emulsification composition having a low-viscosity formulation, which has a significantly lighter feeling of use than existing W/O formulations.

A process for preparing polymeric particles involves a stepwise or gradient emulsion polymerization. The polymeric particles contain polymerized units of methacrylic acid and further monomers, with an overall monomer composition by weight of polymerized units of 5 to 25% by weight of methacrylic acid and 75 to 95% by weight of further monomers. The further monomers are selected from C.sub.1- to C.sub.4-alkylesters of methacrylic acid and/or C.sub.1- to C.sub.4-alkylesters of acrylic acid. The ratio by weight of polymerized units of methacrylic acid to further monomers increases stepwise or in a gradient from the center to the surface of the particles and the polymeric particles are obtained in the form of an aqueous dispersion.

Provided is a method of producing a toner including the steps of: mixing a resin solution comprising a resin R, a colorant, and an organic solvent, a resin fine particle comprising a resin S containing an element α, and carbon dioxide to form a droplet having a surface covered with the resin fine particle; introducing carbon dioxide in a liquid state and pressurizing to extract the organic solvent in the droplet; and removing the extracted organic solvent together with the carbon dioxide to provide a toner particle. In the method of producing a toner, when the resin fine particle is treated with the carbon dioxide in a liquid state, a change in amount of the element α on the surface of the resin fine particle after the treatment as compared to the amount before the treatment falls within a specific range.

A composite powder includes a core particle comprising a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed within the matrix, and a shell polymer disposed about the core particle, and methods of making thereof. Various articles can be manufactured from such composite powders.