Polylactic acid film or sheet having tear strength so as not to break or tear during, for example, production or processing of the film or sheet or winding thereof into a roll, and causing neither melt nor deformation at high temperatures more than 100 C. In the polylactic acid film or sheet, the tear strength is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than 3% in the flow direction (MD) and a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than 3% in the flow direction (MD).

A direct-current cable of an embodiment includes a conductive portion; and an insulating layer covering an outer periphery of the conductive portion, the insulating layer containing cross-linked base resin and inorganic filler, the base resin containing polyethylene, a BET specific surface area of the inorganic filler being greater than or equal to 5 m.sup.2/g, and a mean volume diameter of the inorganic filler being less than or equal to 5 ?m, the mass ratio of the inorganic filler with respect to the base resin being greater than or equal to 0.001 and less than or equal to 0.05, and the cross-linked base resin being cross-linked by a cross-linking agent containing organic peroxide.

The present disclosure provides cross-linker compounds that can produce desirable polymeric materials, polymer compositions, and/or photo-curable resins. Further provided herein are methods of producing cross-linker compounds, compositions, resins, devices, and polymeric materials. Also provided herein are methods of using cross-linker compounds, resins, and polymeric materials for the fabrication (e.g., via 3D printing) of medical devices, such as orthodontic appliances.

The method for manufacturing a composition consists in bringing into contact a product containing mostly polypropylene having a controlled fluidity less than 10 g/10 min with highly fluid polypropylene and a polymer grafted with maleic anhydride.

Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA) wherein a macromer is photopolymerized to form a manufactured article. Representative compounds comprise a polyaxial central core (CC) and 2-4 arms of the formula (A)-(B) or (B)-(A) extending from the central core, where at least one of the arms comprise a light-reactive functional group (Q) and (A) is the free-radical polymerization product from monomers selected from trimethylene carbonate (T) and -caprolactone (C), while (B) is the free-radical polymerization product from monomers selected from glycolide, lactide and p-dioxanone.

Provided are functionalized polypropylene adhesive compositions having a desirable range of melt flow rate. These compositions are obtained by grafting at least one impact polypropylene copolymer or by co-grafting a blend containing at least one impact polypropylene copolymer and at least one random polypropylene copolymer. The polypropylene copolymer(s) are grafted with one or more ethylenically unsaturated carboxylic acids or derivatives of these acids, such as anhydrides. Maleic anhydride is a preferred grafting monomer. Also provided is a multilayer film or sheet structure containing at least one barrier layer and at least one adhesive layer produced from the functionalized polypropylene adhesive composition. The multilayer film or sheet structure may also contain at least one predominantly polypropylene-based layer. In addition, a multilayer film or sheet structure is provided in which a barrier layer or a primer layer is adjacent to at least one layer that is produced from a dry blend or a melt blend of the functionalized polypropylene adhesive composition with a polypropylene matrix polymer.

The present invention provides compositions for use in making biodegradable biodegradable composite, and biodegradable composite comprising polybutylene adipate terephthalate (PBAT)-component; hemp powder; and optionally one or more compatibilizers and/or PBAT grafted with one or more compatibilizers selected from maleic anhydride, glycidyl methacrylate, pyromellitic anhydride, acrylic acid, polyacrylic acid, methylene diphenyl diisocyanate, poly(glycidyl methacrylate, copolymer(s) of glycidyl methacrylate and/or copolymers of acrylic acid. The invention also relates to methods of preparing the composites.

Provided are a three-dimensional object additive manufacturing method and device, a storage medium and computer apparatus, where the method includes: forming a powder material layer by using a powder material; applying a liquid material onto the powder material layer according to layer printing data, where the liquid material dissolves at least part of the powder material, and the liquid material includes an active component capable of polymerization; and supplying energy to the powder material layer so that the active component in the liquid material is polymerized, the powder material itself is not polymerized and does not polymerize with the active component, and an area of the powder material layer to which the liquid material is applied is molded to obtain a slice layer of a three-dimensional object.

A thermoplastic resin composition includes 100 parts by weight of a base resin including 3 to 22% by weight of an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) containing alkyl acrylate rubber having an average particle diameter of 50 to 200 nm, 20 to 40% by weight of an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) containing alkyl acrylate rubber having an average particle diameter of greater than 200 nm and 600 nm or less, and 50 to 72% by weight of an aromatic vinyl compound-vinyl cyanide compound copolymer (B); and 0.6 to 1.9 parts by weight of a lubricant (C), wherein, based on 100% by weight in total of the thermoplastic resin composition, a total content of rubber as measured by FT-IR is 15 to 21% by weight.

Process for producing a polymer composition, a polymer composition obtainable by said process and the use of said polymer composition as adhesive polymer composition and for the production of a multilayer structure, such as a three-layer metal pipe coating, with improved peel strength.