An expanded polyolefin resin particle is obtained by expanding a polyolefin resin particle using water and/or an inorganic gas as a foaming agent. The polyolefin resin particle includes a polyolefin resin, a product obtained by heating and kneading a mixture, and a water absorbing substance, wherein the mixture includes a first polypropylene resin, a polypropylene wax, a polyorganosiloxane including at least one silicon-atom-bound radical polymerizable functional group per molecule, and an organic peroxide.

Polymeric aerogels, articles made from the polymeric aerogels and methods of making the polymeric aerogels are provided. The aerogels are made e.g. from crosslinkable monomers such as isocyanate monomers or phenolic monomers and a filler comprising crosslinkable hydroxyl groups. The filler may be natural (e.g. wood flour) or synthetic. The aerogels and products made therefrom exhibit low thermal conductivity and are mechanically strong. Due to their physical properties, these materials are used as e.g. building envelope components, such as walls, roofs and frames, to improve the thermal performance thereof, and may be used in a variety of other applications such as sound and insulation barriers in mechanical equipment, cryogenic containers, etc.

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.

A coated insulation product with a reduced fluorinated blowing agent concentration, while maintaining acceptable thermal properties (e.g., a 180-day R/in value of at least 4.8), is disclosed. The coated insulation product includes a foam product formed from a foamable composition comprising: a matrix composition; and a blowing agent composition comprising less than 3.5 wt. % of a fluorinated alkene, based on a total weight of the foamable composition. The foam product is coated with 3 g/m.sup.2 and 225 g/m.sup.2 of a barrier coating composition on at least one surface. The barrier coating composition includes: 40 wt. % to 99.9 wt. % of a barrier polymer having a minimum degree of crystallinity of 10%; and 0.01 wt. % to 60 wt. % of at least one additive.

A coated insulation product formed with a low GWP blowing agent composition is disclosed that is capable of achieving a 180-day R/in insulation value of at least 5. The coated insulation product includes a foam product formed from a foamable composition comprising: a matrix composition; and a blowing agent composition a blowing agent composition comprising 15 wt. % to 60 wt. % of a fluorinated alkene and 40 wt. % to 85 wt. % of a co-blowing agent. The foam product is coated with 3 g/m.sup.2 and 225 g/m.sup.2 of a barrier coating composition on at least one surface.

The invention relates to environmentally friendly flame retardant nucleating compositions, and corresponding formulations and processes useful for the production of polystyrene foams with low densities and a very low halogen content in the final product. The flame retardant composition according to the present invention achieves good flame retardancy and excellent recycling performances, with about the same loading of traditional halogenated compound, which does not affect the process and the physical and mechanical properties of the final foam and can be considered halogen free, according to some international standards.

The present invention relates to a polypropylene composition, an injection molded article comprising the polypropylene composition, a foamed article comprising the polypropylene composition as well as the use of said polypropylene composition for reducing the stiffness reduction factor of a foamed injection molded article by at least 200 as determined by the difference of the flexural modulus measured according to ISO 178 of the non-foamed and foamed injection molded article.

The invention relates to the use of i) geopolymer and ii) non-brominated, phosphorusand/or nitrogen-based flame retardants for improving the self-extinguishing properties of a composition comprising polymer. The polymer may be a vinyl aromatic polymer, and may be in a granulate or foam.

The polyolefin resin foam sheet is a polyolefin resin foam sheet having a plurality of cells in an inside thereof, wherein the 50% compressive strength is 120 kPa or less; the MD elongation percentage is 400% or less; and the TD elongation percentage is 200% or less.

An expanded polymeric material which consists of at least 200 phr, preferably at least 300 phr, but less than 1000 phr, preferably less than 700 phr ingredients in total, comprising 100 phr of at least one polymer, of which at least one is a sulphur and/or metal oxide crosslinkable elastomer and at least 40 phr, preferably at least 55 phr of at least one polymeric flame retardant, preferably a brominated polymeric flame retardant.