Generally spherical resin particles formed of a thermoplastic resin, having a sphericity of 0.90 to 1.00, a light scattering index of 0.5 to 1.0 and a linseed oil absorption of 30 to 150 mL/100 g.

The present invention relates to a solid dispersion, a preparation method therefor, a chain-extended polyurethane using same, and an epoxy resin composition comprising same and, more particularly, to a solid dispersion in which an inorganic or organic material-derived isotropic or anisotropic substance is used as a dispersoid and dispersed at room temperature in a solid-phase dispersion medium such as polyols and sugars, whereby the dispersion can be easily stored and used, reduce transportation cost, prevent or alleviate the aggregation or precipitation caused during the storage of products, with the results of working efficiency improvement and processing cost reduction, and, when applied to polyurethane, can increase strength and provide an improved strength, compared to conventional curing agent, a preparation method therefor, a chain-extended polyurethane using same, and an epoxy resin composition comprising same.

The present disclosure relates to a polyalkylene carbonate-based resin having an excellent effect of suppressing a blocking phenomenon as well as excellent mechanical properties and thermal stability, a method of preparing the same, and a molded article prepared from the polyalkylene carbonate-based resin.

The present disclosure relates to a polyalkylene carbonate-based resin having an excellent effect of suppressing a blocking phenomenon as well as excellent mechanical properties and thermal stability, a method of preparing the same, and a molded article prepared from the polyalkylene carbonate-based resin.

A pasty composition for the manufacture of three-dimensional structures or structural elements on the surface of a substrate is formed together with a polymer as an organic component B1, and a powdery material that makes up a proportion of solid in the range of 60 mass % to 95 mass % in the composition, and at least two mutually different solvents C1 and C2 that form a solvent mixture. A first solvent C1 has a boiling temperature here that is lower than the boiling temperature of the further solvent or solvents C2.

Disclosed is a method for preparation and activation of a super hydrophobic electret nanofibrous filter material for cleaning PM2.5, comprising the steps as follows: (1) dissolving polymer powders and resin into a corresponding solvent so as to prepare a polymer solution, then stirring on a magnetic stirrer and standing for use; (2) in order to reinforce the electrostatic effect of the fiber, before preparing the polymer solution, adding in organic electret nanoparticles into the solvent, then oscillating with an ultrasonic oscillator; (3) in order to reinforce the super hydrophobic effect of the filter, spraying a low surface energy solution on the prepared nanofiber with a designed nozzle to carry out modification.

An organogel composition and methods for preparing the organogel composition and preparing a surface with the organogel composition are disclosed. The organogel composition can include one or more organic solvents, one or more acrylates, and one or more functional additives. The method for preparing the organogel composition can include contacting the one or more organic solvents, the one or more acrylates, and the one or more functional additives with one another to prepare the organogel composition, and homogenizing the organogel composition to modify a shear viscosity of the organogel composition.

An aprotic polymer/molten salt ternary mixture solvent and to a corresponding quaternary mixture additionally including an ionic conducting salt, which are prepared by mixing the constituents of the mixture. These mixtures are advantageously used in the preparation of electrochemical membranes, electrochemical systems and of electrochromic systems. Also, electrochemical and electrochromic systems obtained hereby that exhibit, in particular, excellent electrochemical properties at low temperatures.

A process for the recovery of a perfluorosulphonic acid ionomer from a component comprising a perfluorosulphonic acid ionomer is disclosed, the process comprising immersing the component comprising the perfluorosulphonic acid ionomer in a solvent comprising an aliphatic diol and heating. Also disclosed is the use of the recovered perfluorosulphonic acid ionomer, for example in to prepared a proton conducting membrane or a catalyst ink.

The present invention refers to a process for the preparation of a graphene dispersion comprising the following steps: i) providing cellulose acetate flakes or powders; ii) swelling the cellulose acetate flakes or powders in an alcohol having from 1 to 3 carbon atoms; iii) adding acetic anhydride in a concentration range from 30 to 50 wt % referred to the total weight of the mixture; iv) adding graphene nanoplatelets to yield a graphene dispersion. The graphene dispersion is used as ink for composite materials that are employed in the field of foldable electronics. The invention relates also to a composite material comprising uniformly dispersed graphene nanoplatelets and its use for manufacturing electronic devices.