Polyurethane foams which are highly flame resistant are described, as well as the production of such polyurethane foams by the reaction between a natural polyol, such as sucrose or a blend of mono- or disaccharides in place of the standard hydrocarbon-based polyol component, a polyisocyanate and water in the presence of a suitable polyurethane forming catalyst and a non-halogenated flame retardant, and optionally one or more components such as surfactants and/or emulsifiers. The resultant polyurethane foam has a bio-based solid content ranging from about 17% to 30%, may be formulated in a variety of foam densities for a variety of applications, and exhibits a high degree of fire and burn resistance, as exhibited by the flame spread index, flash over resistance determination, and the smoke spread values.

A solid intumescent material is made of a of about 30 wt % or less, based on total weight of the intumescent material, of a hot melt thermoplastic or elastomeric resin (e.g. an EVA resin), a reinforcing material (e.g. glass fibers having an aspect ratio of at least about 100), inorganic filler and an intumescent component (e.g. ammonium polyphosphate, pentaerythritol and melamine). The intumescent material may be formed into fire protection barriers of various thicknesses and may be shaped at a temperature well below the activation temperature of the intumescent material to permit conforming the barrier to requirements at a job site.

The present invention relates to an extruded expanded thermoplastic polyurethane elastomer bead and a preparation method therefor. The bead consists of components of the following parts by weight: 100 parts by weight of a thermoplastic polyurethane elastomer, 0.01-0.5 parts of a foaming nucleating agent, and 0.01-0.2 parts by weight of an antioxidant. The preparation method comprises: mixing materials, then putting the mixture into an extruder for granulation to produce a particle raw material suitable for foaming, finally, putting the particle into a foam extruder, and die foaming then underwater pelletizing, thus obtaining a product bead. The present invention utilizes an extrusion method to prepare expanded thermoplastic polyurethane beads. Control of the working conditions of the foaming process could lead to acquiring an expanded=bead of a controllable density, the cell density evenly distribute. The overall production process is easy to operate. Without any special limit or requirement placed on the equipment, this method is suitable for industrial continuous production.

A composition for the manufacture of temperature resistant and sound attenuating automotive parts includes polyethylene terephthalate resin, basalt fibers, and mica. The basalt fibers and mica may be between 35 and 40% of the composition by weight of the total composition. The basalt fibers may be between 20 and 30% of the composition by weight and the mica may be between 5 and 15% of the composition by weight. The basalt fibers may be 25% of the composition by weight and the mica may be 10% of the composition by weight. A method is disclosed for molding a temperature resistant and sound attenuating part by blending a foaming agent with a thermoplastic olefin, basalt fibers and mica to form a resin mixture. The resin mixture is injected under pressure into a die to fill the die. The pressure is reduced to allow the foaming agent to form a microcellular core.

The use of an Ostwald hydrophobe in the production of polymer foams, preferably polyurethane foam, in particular rigid polyurethane foam, from liquid reaction mixtures, to retard cell ageing, in particular to retard cell ageing caused by Ostwald ripening, is described.

A functional material has, as a first component, a thermoset plastic material, as a second component, a binding material for binding the thermoset plastic material, and, as a third component, at least one additive, which is configured to improve a burning behavior, wherein the burning behavior corresponds at least to a fire reaction class C as given by DIN EN 113501-1 [German/European norm 113501-1]. A method is intended for producing such a functional material and an element is produced from such a functional material.

A formulation includes a polymeric material, a nucleating agent, a blowing, and a surface active agent. The formulation can be used to form a container.

A foamable polypropylene resin composition includes 10 parts by mass to 65 parts by mass of rubber or a thermoplastic elastomer, 18 parts by mass to 90 parts by mass of talc having a 50% particle diameter (D50) of 1 m to 3 m and surface-treated for increased dispersibility, 0.1 part by mass to 6.0 parts by mass of an organic crystal nucleating agent, and 5 parts by mass to 15 parts by mass of a foaming agent relative to 100 parts by mass of the polypropylene resin.

An in-situ foam system and process comprises the components one or more inorganic fillers A) at from 50 to 98 wt %, one or more cationic or amphoteric polymers B) at from 1 to 48 wt %, one or more surfactants C) at from 0.5 to 48 wt %, one or more crosslinkers D) capable of reacting with said polymers B) at from 0.01 to 5 wt %, one or more cell regulators E), selected from silicones, siliconates and carbon, at from 0.5 to 10 wt %, one or more additives F) at from 0 to 20 wt %, wherein the weight percentages of said components A) to F) are based on the nonaqueous fractions and the sum total of A) to F) adds up to 100 wt %.

A method of producing a polyethylene resin expanded molded product includes filling a mold with expanded polyethylene resin particles, wherein an internal pressure of 0.12 to 0.16 MPa is applied to the expanded polyethylene resin particles in the mold, and forming the polyethylene resin expanded molded product by heating the expanded polyethylene resin particles and fusing the expanded polyethylene resin particles. The expanded polyethylene resin particles includes 100 parts by weight of a polyethylene resin, 0.08 to 0.25 parts by weight of a cell nucleating agent, 0.3 to 0.8 parts by weight of a polyhydric alcohol fatty acid ester, and 0.01 to 10 parts by weight of a hydrophilic compound, each of the expanded polyethylene resin particles having a weight of 2.5 to 3.5 mg. The polyethylene resin expanded molded product has a density of 0.017 to 0.021 g/cm.sup.3 and a thickness of 10 to 40 mm.