The present disclosure provides a process. The process includes (i) crosslinking pellets composed of a silane-grafted ethylene/α-olefin multi-block copolymer (Si-g-OBC) to a gel content from 10% to 80% to form crosslinked Si-g-OBC pellets; and (ii) foaming the crosslinked Si-g-OBC pellets to form crosslinked Si-g-OBC foam beads having a gel content from 10% to 80%.

The present disclosure provides a process. The process includes (i) crosslinking pellets composed of a silane-grafted ethylene/α-olefin multi-block copolymer (Si-g-OBC) to a gel content from 10% to 80% to form crosslinked Si-g-OBC pellets; and (ii) foaming the crosslinked Si-g-OBC pellets to form crosslinked Si-g-OBC foam beads having a gel content from 10% to 80%.

Provided are a container that comprises a thermoplastic resin or a thermosetting resin as a constituent material and that is used for accommodating an electrical component with an accommodation ratio v of 60% or more as expressed by equation (A), an accommodation device that comprises this container and a cooling device contained in the container and/or a heating device contained in the container, and an electrical component-accommodating body that comprises this container or accommodation device and an electrical component contained in the container.

Provided are a container that comprises a thermoplastic resin or a thermosetting resin as a constituent material and that is used for accommodating an electrical component with an accommodation ratio v of 60% or more as expressed by equation (A), an accommodation device that comprises this container and a cooling device contained in the container and/or a heating device contained in the container, and an electrical component-accommodating body that comprises this container or accommodation device and an electrical component contained in the container.

An expanded bead having a through hole and including a foamed core layer which defines the through hole therein and which is constituted of a resin composition containing two kinds of polypropylene-based resins having different melting points, and a cover layer covering the foamed core layer and constituted of a polyolefin-based resin. The expanded bead gives a DSC curve in which an endothermic peak intrinsic to the resin composition and another endothermic peak on a higher temperature side thereof appear in a specific heat of fusion ratio. Molded articles include a multiplicity of the expanded beads.

Polymer foams based on polyetherimides (PEIs) fulfill the legal specifications demanded by the aviation industry for aircraft interiors. Specifically, the demands on fire characteristics, stability to media and mechanical properties constitute a great challenge here. According to related art, suitable polymer foams are produced as semi-finished products. Reprocessing to give shaped articles is uneconomic in terms of time and material exploitation, for example by virtue of large amounts of cutting waste. The material is suitable in principle and can be processed to give particle foam mouldings. These mouldings can be produced without reprocessing in short cycle times and, hence, economically. Furthermore, this gives rise to new means of functional integration, for example by direct incorporation of inserts etc. in the foam, and with regard to freedom in terms of design.

Polymer foams based on polyetherimides (PEIs) fulfill the legal specifications demanded by the aviation industry for aircraft interiors. Specifically, the demands on fire characteristics, stability to media and mechanical properties constitute a great challenge here. According to related art, suitable polymer foams are produced as semi-finished products. Reprocessing to give shaped articles is uneconomic in terms of time and material exploitation, for example by virtue of large amounts of cutting waste. The material is suitable in principle and can be processed to give particle foam mouldings. These mouldings can be produced without reprocessing in short cycle times and, hence, economically. Furthermore, this gives rise to new means of functional integration, for example by direct incorporation of inserts etc. in the foam, and with regard to freedom in terms of design.

A thermoplastic olefinic elastomer expanded bead, which is an expanded bead including a thermoplastic olefinic elastomer as a main component, wherein the expanded bead has an average particle diameter of 0.5 to 5 mm, the expanded bead has a heat of fusion of 60 to 80 J/g, and a difference [Tm−Tc] between a melting point (Tm) and a crystallization temperature (Tc) of the expanded bead is 20° C. or lower.

A crosslinked olefin-based thermoplastic elastomer expanded bead including a base polymer having an olefin-based thermoplastic elastomer and a brominated bisphenol-based flame retardant having a chemical structure represented by formula (1). A difference Tm.sub.TPO-T.sub.FR is −5° C. to 40° C., where Tm.sub.TPO is a melting point of the olefin-based thermoplastic elastomer and T.sub.FR is the lower of a glass transition temperature T.sub.gFR and a melting point Tm.sub.FR of the brominated bisphenol-based flame retardant. A xylene insoluble content is 5 mass % to 80 mass %. R.sup.1 and R.sup.3 in the formula (1) are monovalent substituents, R.sup.2 is a divalent substituent, and n is an integer from 1 to 6:

##STR00001##

A crosslinked olefin-based thermoplastic elastomer expanded bead including a base polymer having an olefin-based thermoplastic elastomer and a brominated bisphenol-based flame retardant having a chemical structure represented by formula (1). A difference Tm.sub.TPO-T.sub.FR is −5° C. to 40° C., where Tm.sub.TPO is a melting point of the olefin-based thermoplastic elastomer and T.sub.FR is the lower of a glass transition temperature T.sub.gFR and a melting point Tm.sub.FR of the brominated bisphenol-based flame retardant. A xylene insoluble content is 5 mass % to 80 mass %. R.sup.1 and R.sup.3 in the formula (1) are monovalent substituents, R.sup.2 is a divalent substituent, and n is an integer from 1 to 6:

##STR00001##