Heat-expandable microspheres including a thermoplastic resin shell and a thermally-vaporizable blowing agent encapsulated therein. The thermoplastic resin is a polymer of a polymerizable component containing a cross-linkable monomer (A) which has at least two (meth)acryloyl groups per molecule and a reactive carbon-carbon double bond in addition to the (meth)acryloyl groups and has a molecular weight of at least 500. Also disclosed are hollow resin particles manufactured by expanding the heat-expandable microspheres; fine-particle-coated hollow resin particles including the hollow resin particles; a composition including a base component and the heat-expandable microspheres, or hollow resin particles, or fine-particle coated hollow resin particles; and a formed article manufactured by forming the composition.

Provided is a foamable polyamide composition comprising a) at least one polyamide comprising at least one carboxylic group; b) at least one thermoplastic rubber; and c) at least one compound having at least one isocyanate group; and optionally d) at least one filler and e) at least one additive.

A resin composition containing heat-expandable microspheres including a thermoplastic resin shell and a thermally vaporizable blowing agent encapsulated therein and at least one base resin selected from rubbers, olefin resins and thermoplastic elastomers. The thermoplastic resin is a polymer of a polymerizable component containing N-substituted maleimide and a nitrile monomer containing methacrylonitrile. Also disclosed are molded articles manufactured by molding the resin composition.

Heat-expandable microspheres including a thermoplastic resin shell and a thermally-vaporizable blowing agent encapsulated therein. The thermoplastic resin is a polymer of a polymerizable component containing a cross-linkable monomer (A) which has at least two (meth)acryloyl groups per molecule and a reactive carbon-carbon double bond in addition to the (meth)acryloyl groups and has a molecular weight of at least 500. Also disclosed are hollow resin particles manufactured by expanding the heat-expandable microspheres; fine-particle-coated hollow resin particles including the hollow resin particles; a composition including a base component and the heat-expandable microspheres, or hollow resin particles, or fine-particle coated hollow resin particles; and a formed article manufactured by forming the composition.

The present invention is a manufacturing method for obtaining a molded article having foam layer inside for providing a foaming agent, a device, a mold, a molding machine, a means for increasing the foaming ratio and a means for increasing coating appropriateness used for manufacturing resin having foaming properties. When the resin having compatibility (miscibility) with the resin to be blended is used as a carrier resin used for manufacturing a masterbatch of the foaming agent, the molded article having an excellent outer appearance can be obtained. When the sodium bicarbonate which is an inorganic foaming agent is used for the foaming agent, a sodium carbonate, which is a foam residue remaining in the molded article after the foaming agent is decomposed to generate the foaming gas, reduces the adherability of the coating film. Thus, when the acid cleaning is preliminarily performed to remove the sodium carbonate, the coating appropriateness is satisfied. When performing the GCP, the thickness of the skin layer located at the surface varies depending on the surface temperature of the mold. In general, the means using the heated steam is generally used for increasing the temperature of the mold. In the present invention, the means for heating the magnetic fluid (liquid) by high frequency induction heating is used. Thus, the temperature of the mold can be safely increased at low cost with heating efficiency. When a mold-back or a core-back is performed for obtaining the molded article having high foaming ratio, the resin is separated from the fixed side. The present invention provides the means for solving the above described problem of the separation by using the gas.

In an embodiment, the present disclosure provides a composition composed of (A) a continuous phase composed of an olefin-based polymer, and (B) particles of a voiding agent dispersed in the continuous phase, the voiding agent composed of a functionalized styrene polymer having a glass transition temperature greater than or equal to 90° C. In another embodiment, the present disclosure provides an oriented article having (A) a continuous phase composed of an olefin-based polymer, and (B) particles of a voiding agent dispersed in the continuous phase. The voiding agent is composed of a functionalized styrene polymer having a glass transition temperature greater than or equal to 90° C. The oriented article includes (C) a plurality of elongated voids dispersed throughout the continuous phase. The oriented article has a density less than 0.9 g/cc.

Polymer films having a surface with increased hydrophobicity or enhanced hydrophobicity or improved hydrophobicity or super-hydrophobicity; composite structures such as multilayer polymer sheets comprising the polymer films; methods and systems of making such polymer films; polymer blends from which to make such polymer films; masterbatches or masterbatch compositions useful for making such polymer blends; as well as methods and systems for making such polymer blends and such masterbatches or masterbatch compositions.

The invention relates to a foam material (FP) comprising a polymer composition (C) comprising at least a polyphenylene sulfide polymer (PPS) and at least one functionalized elastomer (E). The present invention also relates to a process for the manufacture of said foam material and to an article (A) including said foam material (FP), for example a composite material.

The present invention is related to expandable vinyl aromatic polymers comprising comminuted coke, said comminuted coke having an average stack height (Lc) of carbon crystallites at least 4 nm, a volume median particle diameter (D50) comprised between 1 and less than 5 μm and being characterized by a span (D90−D10)/D50 below 2.5 Molded parts produced from the expandable vinyl aromatic polymers prove low thermal conductivities for a low foam density.

The present invention relates to self-foaming hot melt adhesive compositions and methods of making and using the same. Self-foaming hot melt adhesive compositions are formed by admixing a dispersion concentrate including a chemical blowing agent and a compatible carrier (liquid or molten) with a molten base hot melt adhesive composition at a temperature below the decomposition temperature of the chemical blowing agent. The resolidified material is processed through a device that heats the material above the decomposition temperature of the chemical agent and cools it below such temperature before being dispensed. The device preferably includes sensors and a controller configured to prevent the material from accumulating an adverse thermal history during processing.