A foamed article formed by foam injection molding or foam extrusion of a composition is disclosed. The article is formed from a molding composition consisting essentially of: 100 phr of at least two different hydrogenated styrenic block copolymers (HSBC), a first HSBC and a second HSBC, having different molecular weights, a molecular weight ratio of at least 1.2:1, respectively; and a weight ratio of ranging from 5:95 to 95:5, respectively; 10-55 phr of a polypropylene having a melt flow of at least 2 g10/min; and optionally up to 55 phr of a plasticizer, selected from hydrocarbon based oils, fatty acids, triglyceride oils, and mixtures thereof. The composition has a melt flow rate of 2-50 g/10 min, a Shore A hardness of 60-90, a melt strength (F) of at least 0.010 N, and a melt strength (V) of at least 10.

Disclosed is a polypropylene resin composition which contains a polypropylene-based polymer containing, as monomer units, propylene and at least one copolymerization monomer of ethylene or α-olefins with carbon atom number of 4 or more. Proportion of the monomer units derived from the copolymerization monomer in the polypropylene-based polymer is 2 to 10% by mass based on the mass of the polypropylene-based polymer. A crystallization half-time at 110° C. of the polypropylene resin composition is 20 seconds or shorter.

Disclosed is a polypropylene resin composition which contains a polypropylene-based polymer containing, as monomer units, propylene and at least one copolymerization monomer of ethylene or α-olefins with carbon atom number of 4 or more. Proportion of the monomer units derived from the copolymerization monomer in the polypropylene-based polymer is 2 to 10% by mass based on the mass of the polypropylene-based polymer. A crystallization half-time at 110° C. of the polypropylene resin composition is 20 seconds or shorter.

The present invention relates to a tool part comprising a polymer composition. The tool part is suitable to be used in direct contact with water and/or in an environment with relative humidity equal to or higher than 55%. The present invention further relates to a process for the preparation of the tool part. The present invention also relates to a process for the preparation of the tool part. The present invention further relates to the use of the polymer composition for the preparation of the tool part.

The present invention relates to a tool part comprising a polymer composition. The tool part is suitable to be used in direct contact with water and/or in an environment with relative humidity equal to or higher than 55%. The present invention further relates to a process for the preparation of the tool part. The present invention also relates to a process for the preparation of the tool part. The present invention further relates to the use of the polymer composition for the preparation of the tool part.

A polyethylene composition suitable for rotomolding and comprising a blend of a stabilized polyethylene, and optionally a substantially non-stabilized polyethylene, with a recycled polymer (PCR), is described. By using a PCR with a higher density and lower melt flow as compared to the stabilized polyethylene, a higher portion of the recycled polymer is present on the interior surface f the rotomolded part. Oxidation of the recycled polymer results in formation of oxidized species, such as carbonyl groups, on the interior surface of the part, which along with higher surface roughness enhances adhesion between the interior surface and coatings or fillings, such as polyurethane, used to provide a layer of insulation or improve structural strength or buoyancy.

A polyethylene composition suitable for rotomolding and comprising a blend of a stabilized polyethylene, and optionally a substantially non-stabilized polyethylene, with a recycled polymer (PCR), is described. By using a PCR with a higher density and lower melt flow as compared to the stabilized polyethylene, a higher portion of the recycled polymer is present on the interior surface f the rotomolded part. Oxidation of the recycled polymer results in formation of oxidized species, such as carbonyl groups, on the interior surface of the part, which along with higher surface roughness enhances adhesion between the interior surface and coatings or fillings, such as polyurethane, used to provide a layer of insulation or improve structural strength or buoyancy.

This invention provides a modified polyolefin resin composition that contains a large amount of an unsaturated carboxylic acid or an anhydride thereof, and that can inhibit an increase in fluidity after graft modification due to little influence of a reaction residue, wherein the resin composition when used as a compatibilizer for reinforced fiber plastics provides a molded article with excellent mechanical properties such as bending strength and impact resistance.

This invention provides a modified polyolefin resin composition that contains a large amount of an unsaturated carboxylic acid or an anhydride thereof, and that can inhibit an increase in fluidity after graft modification due to little influence of a reaction residue, wherein the resin composition when used as a compatibilizer for reinforced fiber plastics provides a molded article with excellent mechanical properties such as bending strength and impact resistance.

A material for 3D printing includes a thermoplastic resin, a thermoplastic elastomer, and a filler. The filler includes talc. A content of the filler is 5% by mass or more and 70% by mass or less with respect to a total mass of the material for 3D printing.