An extruded styrenic resin foam may include 100 parts by weight of a styrenic resin; 0.5 to 8.0 parts by weight of a flame retardant; 1.0 to 5.0 parts by weight of graphite; a saturated hydrocarbon having 3 to 5 carbon atoms; and a hydrofluoroolefin. 1 kg of the extruded styrenic resin foam includes the hydrofluoroolefin in an amount of 0.05 to 0.40 mol, and the saturated hydrocarbon in an amount of 0.10 to 0.40 mol, a total amount of the saturated hydrocarbon and the hydrofluoroolefin being 0.30 to 0.50 mol relative to 1 kg of the extruded styrenic resin foam.

An in-situ foaming system for forming a flame-retardant polyurethane foam in situ comprising a first liquid containing a polyisocyanate (A), a second liquid containing a polyol (B), a trimerization catalyst (C), a foaming agent (D), a foam stabilizer (E), and additives (F) comprising red phosphorus and at least one member selected from the group consisting of phosphoric acid esters, phosphate-containing flame retardants, bromine-containing flame retardants, boron-containing flame retardants, antimony-containing flame retardants, and metal hydroxides.

A cover for an electronic device that transmits and receives radio waves in a high-frequency band, the cover comprising a resin and satisfying the relationship of the following formula:

(100?frontal transmittance X)?(100?oblique transmittance Y)<55

(where the frontal transmittance X (%) is a radio wave transmittance at an angle of incidence of 0? of the cover at a frequency f (Hz), and the oblique transmittance Y (%) is a radio wave transmittance of TE wave at an angle of incidence of 60? of the cover at the frequency f (Hz)).

A polyvinyl chloride polymer (PVC) composite material is described herein. The PVC composite material includes 40-60 parts by weight of PVC, 40-60 parts by weight of calcium carbonate, 0.2-0.6 parts by weight of composite foaming agent, 3-5 parts by weight of foam regulator, 2-4 parts by weight of toughener, 0.8-1.2 parts by weight of lubricant, and 2-3 parts by weight of stabilizer. Meanwhile, the present invention provides a foam board made of the PVC composite material and flooring. The resulting PVC products have a high-strength structure and a good foaming property, bring the comfort to feet as the resilient flooring does, have a satisfied sound reduction and can be easily installed as the hard flooring could.

The present invention disclosures microwave molded articles, including molded articles having portions with different hardness; molded articles having sharp flanges; molded articles having portions with different colors; molded articles with designed pattern; molded articles made of plastic particles with hollow tubes; molded articles made of plastic and rubber particles composition; molded articles made of plastic particles in combination of pre-molded rubber blocks; a molded article made of plastic particles in combination of textile; and a molded article made of non-spherical type plastic particles. The manufacturing methods for the above molded articles are also provided.

Provided are articles having a cellular structure and also having improved aging performance under certain types of illumination. Also provided are methods of utilizing the disclosed articles.

Carbon black-containing composite resin pre-expanded particles comprising 100 to 400 parts by mass of a polystyrene-based resin with respect to 100 parts by mass of a carbon black-containing polyolefin-based resin; having a carbon black content of 0.5 to 5.0% by mass and a bulk density of 0.015 to 0.25 g/cm.sup.3; and having an outermost layer of 30 to 80 pm after undergoing the following tests: (a) one of the carbon black-containing composite resin pre-expanded particles is sliced into a 1-mm slice in such a way that cross-section surfaces of cells are exposed on both surfaces of the slice; (b) the obtained slice is immersed in toluene at 25 C. for 24 hours to extract a polystyrene-based resin component as described above; (c) the cross-section surface of the slice is then subjected to magnified photographing by a microscope; (d) the obtained microscope image is observed.

The present invention relates to a silicone foam that is produced in-situ at a wound site, e.g. in a wound cavity, through a multi-component system, based on a physical foaming process, wherein the gas required to form the foam structure is provided through the blowing agent independently of the curing reaction of the polyorganosiloxane components of the multi-component system. Therefore, in accordance with the present invention, the blowing agent is provided as a distinct entity of the multi-component system that is, in particular, not the result of any chemical reaction taking place in the multi-component system. The present invention also relates to a device for producing the foam and the corresponding negative pressure wound therapy kit.

Provided is a vulcanized rubber composition having good on-ice performance and excellent wear resistance. The rubber composition of the present disclosure contains a rubber component containing natural rubber, a cyclic polyol compound having a hydrocarbyl group, and a liquid polymer having a polystyrene-equivalent weight-average molecular weight of 5000 or more and less than 40000 measured by gel permeation chromatography.

Provided is a rubber composition having excellent cut resistance. The rubber composition of the present disclosure contains a rubber component containing natural rubber and a modified diene-based polymer, and a cyclic polyol compound having a hydrocarbyl group, where in the rubber component, the content of the natural rubber is 20% by mass or more, and the content of the modified diene-based polymer is 10% by mass or more.