A method comprising: providing a powder composition including at least one ultrafine, spherical thermoplastic polymer powder having a glass transition temperature (Tg) of at least 150 degrees C.; and powder bed fusing the powder composition to form a three-dimensional article.

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media and highly pure rubbers obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom.

Porous resin particles are disclosed that comprise a polymer of a monomer mixture. The monomer mixture includes: a mono(meth)acrylate-based monomer in an amount of 3 wt % to 40 wt % containing: an ethylenic unsaturated group only in a (meth)acrylic acid residue; and a hydroxyl group and at least either an ether group or an ester group in an alcohol residue; another monofunctional vinyl-based monomer in an amount of 10 wt % to 69 wt % containing a single ethylenic unsaturated group; and a polyfunctional vinyl-based monomer in an amount of 30 wt % to 70 wt % containing two or more ethylenic unsaturated groups.

A resin powder may be superior in passability through pipes and silos, and a method may produce such a resin powder. The resin powder contains a vinyl alcohol polymer, an average particle diameter thereof is 100 to 2,000 m, and an average value PA of a roundness P by formula (1), of 50 particles arbitrarily extracted from the particles of the resin powder having a particle diameter of 100 to 1,000 m, is 0.1 to 0.8.
P=(.sub.i=1.sup.Nr.sub.i)/NR(1)
r.sub.i being a radius of curvature of each particle corner of the 50 particles; R being a maximum inscribed circle radius of the particle; and N being a number of particle corners. If the number of particle corners is 9 or more, the radii of curvature of eight corners, in increasing order from a smallest radius of curvature, are adopted, and N is 8.

The disclosure provides a preparation method of a polyester material, which is a continuous process and includes the following steps. A recycled release film is crushed, compacted and dried, and then melted, extruded and degassed. After filtration, a liquid viscosifying system is used for thickening. After that, it is melted and kneaded, modified with modifiers and extruded, and then pelletized and dehydrated to make the polyester material, wherein the modifiers include nucleating agents, flame retardants, antioxidants, rod-shaped filling reinforcements and compatibilizers.

The present invention relates to compositions of carbon nanotubes which can be used in solid form, that is to say in the absence of solvent. These compositions comprise at least one polymer and are readily dispersible in formulations for the manufacture of electrodes for batteries and in particular Li-ion batteries in liquid or solid processes. The invention also relates to the process for obtaining these powders, to their use in the manufacture of electrodes for batteries, and also to the batteries comprising them.

The present invention provides simple methods of making free-flowing surface modified particles that enhance the functionality of surface modified particles containing them. The methods comprise treating finely divided dry or anhydrous particles, with an activator to form activated particles, mixing the activated particles with a stabilized aqueous composition comprising at least one polymer, such as one containing an additional ingredient, such as an antioxidant, an antimicrobial, an adhesion promoter, one or more colorants, one or more pigments, fillers or extenders, an abrasion resistant polymer, or a waterproofing agent to form a moist mixture; and, drying the moist mixture until it forms free-flowing surface modified particles, each particle having one or more discrete deposits of the polymer as solids on its surface.

Described are rheology modifier compositions comprising cross-linked poly(amino acid) and methods of their use in aqueous compositions.

The present invention provides aqueous treatment strategies that use ingredients comprising at least an EO/PO nonionic surfactant (defined below), optionally in combination with EO (defined below) and/or EO/BO nonionic surfactants (defined below) and/or other optional ingredients, to reduce blocking, frothing (i.e., foaming) in aqueous media if desired, and fouling problems associated with flowable solid polymer bodies such as powders, granules, grains, pellets, chunks, particles, combinations of these and the like. The aqueous treatment strategies are particularly useful in polymer pellet fabrication.

A resin particle is provided that includes a biodegradable resin. The resin particle has a volume average particle size of 5 m or more and 50 m or less and a relative span factor of 1.2 or less.