Foam compositions, cushions, and related methods of manufacture are disclosed. The foam composition or cushion includes a polymer that includes about 2% to about 10% polyol comprising multiple hydroxyl groups, about 1% to about 25% isocyanate and about 75% to about 95% filler suspended in the polymer.

Foam compositions, cushions, and related methods of manufacture are disclosed. The foam composition or cushion includes a polymer that includes about 2% to about 10% polyol comprising multiple hydroxyl groups, about 1% to about 25% isocyanate and about 75% to about 95% filler suspended in the polymer.

A blow-molded foam is provided by foaming and blow-molding the resin material including a polyethylene resin. The foamed resin includes the antioxidant by 300 ppm or more in total. The antioxidant is preferably the combination of a phosphorus antioxidant and a phenolic antioxidant. The optimum amount of phosphorus antioxidant to be included is 250 ppm to 3000 ppm, and that of phenolic antioxidant is 250 ppm to 750 ppm. In the manufacture, the collected resin material and the resin including 300 ppm or more of the antioxidant are melted and kneaded and the foaming agent is mixed thereto to provide the foamed resin, and the foamed resin is blow-molded.

A superabsorbent polymer having optimized gel strength and exhibiting an improved absorption rate without increasing a specific surface area by chemical foaming or a physical method, and a preparation method thereof, are provided.

A superabsorbent polymer having optimized gel strength and exhibiting an improved absorption rate without increasing a specific surface area by chemical foaming or a physical method, and a preparation method thereof, are provided.

The invention relates to a method for producing a moulded part (50) by structural foam moulding, in which a polymer melt (18) is provided by melting a thermoplastic material, in which the polymer melt (18) is charged with a foaming agent (22) and in which the polymer melt (18) charged with the foaming agent (22) is injected under pressure into a cavity (26) of a mould (28), and so the polymer melt (18) fills the cavity (26) behind a melt front (34) running through the cavity (26), wherein the rate of injection at which the polymer melt (18) is injected into the cavity (26) of the mould (28) is set such that the internal pressure of the polymer melt (18) in the cavity (26), in a region (40) that follows a portion of the melt front (34) with a time delay of at most 0.15 seconds, is greater than the critical pressure of the foaming agent (22), at least at one point in time during the injection-moulding operation. The invention also relates to a moulded part (50) of an expanded thermoplastic material, wherein the moulded part (50) has a surface region with visual structuring formed by the expanded thermoplastic material of which the average ratio of the degrees of gloss measured in the direction of flow in relation to the degrees of gloss measured transversely to the direction of flow is below 1.9, preferably below 1.5, in particular below 1.2. The invention also relates to uses of such a moulded part.

The invention relates to a method for producing a moulded part (50) by structural foam moulding, in which a polymer melt (18) is provided by melting a thermoplastic material, in which the polymer melt (18) is charged with a foaming agent (22) and in which the polymer melt (18) charged with the foaming agent (22) is injected under pressure into a cavity (26) of a mould (28), and so the polymer melt (18) fills the cavity (26) behind a melt front (34) running through the cavity (26), wherein the rate of injection at which the polymer melt (18) is injected into the cavity (26) of the mould (28) is set such that the internal pressure of the polymer melt (18) in the cavity (26), in a region (40) that follows a portion of the melt front (34) with a time delay of at most 0.15 seconds, is greater than the critical pressure of the foaming agent (22), at least at one point in time during the injection-moulding operation. The invention also relates to a moulded part (50) of an expanded thermoplastic material, wherein the moulded part (50) has a surface region with visual structuring formed by the expanded thermoplastic material of which the average ratio of the degrees of gloss measured in the direction of flow in relation to the degrees of gloss measured transversely to the direction of flow is below 1.9, preferably below 1.5, in particular below 1.2. The invention also relates to uses of such a moulded part.

A method for producing a millable silicone rubber sponge is a method for producing a millable silicone rubber sponge with an open cell ratio of not lower than 20%, comprising: performing a heat treatment on a silicone rubber composition at 200 C. or higher, the silicone rubber composition containing: (A) an organopolysiloxane having at least two alkenyl groups in one molecule and a polymerization degree of not lower than 3,000; (B) a reinforcing silica; (C) thermally expandable microcapsules exhibiting an expansion starting temperature of 90 to 150 C., and contracting from a maximum expansion volume by 20% or more when heated at 200 C. for 5 min; (D) a curing agent; and (E) an open cell-forming agent which is a solid high temperature decomposition-type organic foaming agent having a decomposition starting temperature of not lower than. 180 C., and starting to decompose after the component (A) is cured.

Disclosed herein are processes for producing polyurethanes including mixing (a) polyisocyanate, (b) polymeric compounds having isocyanate-reactive groups, (c) optionally catalysts, (d) compounds of general formula W-Kw-NHC(O)CH2-Q and optionally (e) blowing agents, (f) chain extenders and/or crosslinking agents and (g) auxiliaries and/or additives to afford a reaction mixture and reacting the reaction mixture to afford the polyurethane. Further disclosed herein are a polyurethane producible by such a process and a method of using such a polyurethane in enclosed spaces.

Disclosed herein are processes for producing polyurethanes including mixing (a) polyisocyanate, (b) polymeric compounds having isocyanate-reactive groups, (c) optionally catalysts, (d) compounds of general formula W-Kw-NHC(O)CH2-Q and optionally (e) blowing agents, (f) chain extenders and/or crosslinking agents and (g) auxiliaries and/or additives to afford a reaction mixture and reacting the reaction mixture to afford the polyurethane. Further disclosed herein are a polyurethane producible by such a process and a method of using such a polyurethane in enclosed spaces.