A method for preparing polyisocyanurate and polyurethane foams by the use of a liquid siloxane nucleating additive, and a foam-forming composition for preparing foams with improved thermal insulation performance, comprising an isocyanate component, an isocyanate-reactive component, a blowing agent, and a liquid siloxane nucleating additive.

A phenolic foam and method for manufacturing same are described herein. The foam is formed from a foamable phenolic resin composition, and a blowing agent, the phenolic foam comprising 1 to 5% by weight of red phosphorus based on the weight of the phenolic foam wherein said phenolic foam has a density of from 10 kg/m.sup.3 to 100 kg/m.sup.3, a closed cell content of at least 85% as determined in accordance with ASTM D6226 and wherein said foam has a FIGRA.sub.0.2 MJ of 120 W/s or less, when measured according to EN13823 and a thermal conductivity of 0.023 W/m.K or less, at 10° C., in accordance with EN 13166:2012. The foam has excellent thermal insulation performance and excellent fire performance.

The thermoplastic elastomer composition contains a thermoplastic elastomer and a pigment.

Methods, foams and blowing agents for forming for forming extruded polystyrene foam wherein the blowing agent comprises (i) from about 40% by weight to about 70% by weight of one or more HFOs three or four carbon atoms and/or an HFCOs having three or four carbon atoms being selected from the group consisting of 1224yd(Z), 1233zd(E), 1336mzz(Z) and combinations of these; and (ii) from about 30% to about 60% by weight of isobutane, methyl formate and combinations of these.

Embodiments relate to a liquid aromatic polyester polyol composition for preparing a polyurethane foam product including at least one polyalicyclic structure, wherein the aromatic polyester polyol composition is a clear liquid at room temperature, the viscosity of the aromatic polyester polyol composition, at room temperature and at a shear rate of 10 sec-1, is no greater than 100 Pa-s; and the OH number of the aromatic polyester polyol composition is in the range of from 100 mg KOH/g to 500 mg KOH/g; and a process for preparing the above liquid aromatic polyester polyol composition; an isocyanate-reactive composition and a foam-forming composition comprising the liquid aromatic polyester polyol.

An isocyanate-reactive composition comprising (i) at least one isocyanate-reactive compound; and (ii) at least one T-shaped siloxane material at a predetermined amount; and a foam-forming composition for producing a polyurethane or polyisocyanurate foam comprising at least one isocyanate component and at least one isocyanate-reactive component; wherein the at least one isocyanate-reactive component is the above isocyanate-reactive composition.

A composite material according to the present invention includes a solid portion including inorganic particles and a resin. The composite material has a porous structure including a plurality of voids surrounded by the solid portion. In the composite material, a ratio of a smallest heat conductivity of heat conductivities λ.sub.x, λ.sub.y, and λ.sub.z respectively in x-axis, y-axis, and z-axis directions perpendicular to each other to a largest heat conductivity of the heat conductivities λ.sub.x, λ.sub.y, and λ.sub.z is 0.8 or more.

Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foams from polyisocyanates and polyfunctional isocyanate-reactive compounds in the presence of blowing agents wherein the polyfunctional isocyanate-reactive compounds comprise an unmodified or modified novolac polyol and a polyether polyol having a hydroxyl number of between 50 and 650 mg KOH/g obtained by reacting a polyfunctional initiator first with ethylene oxide and subsequently with propylene oxide wherein the propoxylation degree is between 0.33 and 2 mole propylene oxide per active hydrogen atom in the initiator and wherein the molar ratio of ethylene oxide to propylene oxide in said polyether polyol is at least 2.

The invention relates to a molding composed of extruded foam, wherein at least one fiber (F) is present with a fiber region (FB2) within the molding and is surrounded by the extruded foam, while a fiber region (FB1) of the fiber (F) projects from a first side of the molding and a fiber region (FB3) of the fiber (F) projects from a second side of the molding, and the extruded foam is produced by an extrusion process comprising the following steps: I) providing a polymer melt in an extruder, II) introducing at least one blowing agent into the polymer melt provided in step I) to obtain a foamable polymer melt, III) extruding the foamable polymer melt obtained in step II) from the extruder through at least one die aperture into an area at lower pressure, with expansion of the foamable polymer melt to obtain an expanded foam, and IV) calibrating the expanded foam from step III) by conducting the expanded foam through a shaping tool to obtain the extruded foam.

Expanded polypropylene beads comprising a polypropylene composition (C) having: a) a melt flow rate (MFR2) in the range from 1.5 to 15.0 g/10 min; b) a melting temperature (Tm) in the range from 135 to 158° C.; and c) a loss tangent (tan δ) in the range of 2.00 to 4.00 wherein the polypropylene composition (C) comprises more than 90.0 wt.-%, of a long chain branched copolymer of propylene (c-PP) comprising up to 8.0 wt.-% of comonomer(s) selected from ethylene and C.sub.4 to C.sub.10 alpha olefins, a method for the preparation of said beads, in addition to a method of forming molded articles from said beads, and the molded articles obtained thereby.