The present invention relates to a biphasic superabsorbent and partially biodegradable material comprising a biodegradable and/or compostable polymeric phase and a non-biodegradable superabsorbent cross-linked polymer phase. Furthermore, the present invention relates to a process for the production of said superabsorbent material and the use thereof to contain and/or absorb and/or separate liquids, in particular aqueous liquids, preferably contaminated ones, and/or biological fluids.

Provided is a polymeric piezoelectric film including a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and having optical activity, in which a crystallinity of the film measured by a DSC method is from 20% to 80%, a product of a standardized molecular orientation MORc measured by a microwave transmission-type molecular orientation meter based on a reference thickness of 50 μm and the crystallinity is from 40 to 700, and, when a refractive index in a slow axis direction in the film surface is n.sub.x, a refractive index in a fast axis direction in the film surface is n.sub.y, a refractive index in a thickness direction of the film is n.sub.z, and an Nz coefficient=(n.sub.x−n.sub.z)/(n.sub.x−n.sub.y), the Nz coefficient is from 1.108 to 1.140.

A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

Provided are modified bio-derived polymers having improved processability as well as methods of producing such polymers and articles produced therefrom. The modified bio-derived polymers have improved melt strength compared with presently available bio-derived polymers. Thus, the inventive bio-derived polymers are suitable for use in plastic processing techniques such as blow molding and blown film extrusion.

A method for producing particles, the method including: depolymerizing a resin to obtain a depolymerized product; contacting the depolymerized product obtained in the depolymerizing with a first compressive fluid to obtain a melted product; and jetting the melted product obtained in the contacting to granulate the particles.

The present invention relates to a process for producing a polyester resin composition, including the step of mixing a polyester resin (A), an aromatic carbodiimide (B) and an aliphatic polycarbodiimide (C) at a temperature not lower than a melting temperature of the polyester resin, in which the polyester resin (A) and the aromatic carbodiimide (B) are mixed in the presence of the aliphatic polycarbodiimide (C).

Disclosed is a polymer powder having an average particle diameter of 20 μm to 300 μm, with a particle diameter of less than 10 μm of 10 mass % or less, and a particle diameter of greater than 300 μm of 10 mass % or less. Further, disclosed is a method for preparing a polymer powder, comprising: forming a melt of a polymer; introducing a supercritical fluid into the melt of the polymer to form a mixed composition; and spraying the mixed composition to prepare the polymer powder.

A resin powder for solid freeform fabrication has a 50 percent cumulative volume particle diameter of from 5 to 100 μm and a ratio (Mv/Mn) of a volume average particle diameter (Mv) to the number average particle diameter (Mn) of 2.50 or less and satisfies at least one of the following conditions (1) to (3): (1): Tmf1>Tmf2 and (Tmf1−Tmf2)≥3 degrees C., both Tmf1 and Tmf2 are measured in differential scanning calorimetry measuring according to ISO 3146, (2): Cd1>Cd2 and (Cd1−Cd2)≥3 percent, both Cd1 and Cd2 are measured in differential scanning calorimetry measuring according to ISO 3146, and (3): Cx1>Cx2 and (Cx1−Cx2)≥3 percent.

This invention is directed to composites and films comprising hydroxyapatite, biodegradable polymer, a biocompatible surfactant with inorganic fullerene-like (IF) nanoparticles or inorganic nanotubes (INT); methods of preparation and uses thereof.

A polymeric piezoelectric material, comprising at least two regions: a region H, which is an oriented polymeric piezoelectric region that includes an optically active helical chiral polymer (A) having a weight average molecular weight of from 50,000 to 1,000,000, the region H having a crystallinity of from 20% to 80% and having a standardized molecular orientation-of from 3.5 to 15.0; and a region L, which is a low orientation region that includes the optically active helical chiral polymer (A) having a weight average molecular weight of from 50,000 to 1,000,000, the region L being present near at least part of an end portion of the region H, having an average width when viewed from a normal direction with respect to the principal plane of the region H of from 10 μm to 300 μm, and having a retardation is 100 nm or less.