Provided is a material having an excellent sound-absorbing performance which can be easily applied to the desired area at the operation site and which can effectively prevent sound leakage. The material includes an open-cell soft polyurethane foam prepared from a 2-part reactive urethane resin composition prepared from a polyisocyanate component and a polyol-containing component, wherein the polyol-containing component comprises a polyol component, catalysts, a foam stabilizer, an amine compound having primary or secondary amino groups, and carbon dioxide; wherein an average sound absorption coefficient of said polyurethane foam is 30% or more, measured in accordance with JIS A 1405-2:2007 for 63 hertz to 5000 hertz; and the length of liquid-dripping is within 300 mm.

A flexible cellular foam or fabric product is coated with a coating including highly thermally conductive nanomaterials. The highly thermally conductive nanomaterials may be carbon nanomaterials, metallic, or non-metallic solids. The carbon nanomaterials may include, but are not necessarily limited to, carbon nanotubes and graphene nanoplatelets. The highly thermally conductive nanomaterials may include but are not limited to nano-sized solids that may include graphite flakes, for example. When coated on a surface of flexible foam, the presence of nanomaterials may impart greater thermal effusivity, greater thermal conductivity, and/or a combination of these improvements. The flexible foam product may be polyurethane foam, latex foam, polyether polyurethane foam, viscoelastic foam, high resilient foam, polyester polyurethane foam, foamed polyethylene, foamed polypropylene, expanded polystyrene, foamed silicone, melamine foam, among others.

The disclosure is directed to methods of manufacturing protective packaging materials, as well as the protective packaging materials produced using the disclosed methods. These packaging materials can be biodegradable, compostable, and/or recyclable.

A process for producing a flexible foam includes introducing a masterbatch material into an extruder, the masterbatch material consisting essentially of one or more thermoplastic polymers that are recycled, recyclable, biodegradable, and/or compostable, mixing an inert gas with the masterbatch material, extruding the masterbatch material through the extruder to form a polymer melt, passing the polymer melt through a die to form an extrudate, and allowing the extrudate to expand into a foam.

The present disclosure relates to a silicone rubber foam layer obtainable by a process that includes providing a substrate; providing a first solid film and applying it onto the substrate; providing a coating tool provided with an upstream side and a downstream side, wherein the coating tool is offset from the substrate to form a gap normal to the surface of the substrate; moving the first solid film relative to the coating tool in a downstream direction; providing a curable and foamable precursor of the silicone rubber foam to the upstream side of the coating tool thereby coating the precursor of the silicone rubber foam through the gap as a layer onto the substrate provided with the first solid film; providing a second solid film and applying it along the upstream side of the coating tool, such that the first solid film and the second solid film are applied simultaneously with the formation of the adjacent layer of the precursor of the silicone rubber foam; foaming or allowing the precursor of the silicone rubber foam to foam; curing or allowing the layer of the precursor of the silicone rubber foam to cure thereby forming the silicone rubber foam layer; optionally, exposing the layer of the precursor of the silicone rubber foam to a thermal treatment; and optionally, removing the first solid film and/or the second solid film from the silicone rubber foam layer.

A foamed sheet includes an aliphatic polyester resin and a filler. A degree of hydrophohization of the filler is 50% by mass or more, and a pH of the filler is 6.5 or lower. A manufacture includes the foamed sheet and a method can be used for producing the foamed sheet.

A foamed sheet includes an aliphatic polyester resin and a filler. An average foam diameter of the foamed sheet is 15 micrometers or less. An average thickness of the foamed sheet is 3,000 micrometers or less. A ratio of a length of a side of the foamed sheet in a longer direction or a side of the foamed sheet in a direction perpendicular to the longer direction to the average thickness is 250 or more.

The present disclosure relates to acid-blocked alkylaminopyridine catalysts for use in a polyurethane formulation. The polyurethane formulation may include the acid-blocked alkylaminopyridine catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound and a halogenated olefin compound.

The present invention relates to a method of shaping material having a plurality of interstices (such as a network of voids) and shaped products formed by the method. In preferred embodiments the material is a foam such as a polyurethane foam. The shaping method allows such materials to be shaped using contour-shaping machining methods including computer numerical control (CNC) milling, which is provided by way of example only. To be contrasted with methods of manufacturing a shaped material (such as by the polymerisation of a solution or emulsion of monomers), in several aspects the present invention contemplates the shaping of existing (preformed) materials having a plurality of interstices, such as a network of voids.

A flexible foam composition includes a flexible foam body having a surface, which flexible foam is polyurethane and/or latex flexible foam, and an expandable graphite layer on the surface or within the foam surface adjacent to the surface. The flexible foam composition with the expandable graphite layer imparts improved flame retardant properties to the composition.