Polymeric based closed cell foams, such as shape memory polymer foams, contain bubbles. Making these bubbles continuous is called reticulation. Disclosed are embodiments of a device and method to controllably reticulate polymer-based closed cell foams by puncturing the membranes of these polymer-based closed cell foams.

Polymeric based closed cell foams, such as shape memory polymer foams, contain bubbles. Making these bubbles continuous is called reticulation. Disclosed are embodiments of a device and method to controllably reticulate polymer-based closed cell foams by puncturing the membranes of these polymer-based closed cell foams.

Disclosed are ethylenically unsaturated macromers produced using a residue of an isocyanate manufacturing process. Also disclosed are preformed stabilizers produced using such macromers, polymer polyols produced using such preformed stabilizers, foam-forming compositions produced using such polymer polyols, and foam produced using such compositions.

Disclosed are ethylenically unsaturated macromers produced using a residue of an isocyanate manufacturing process. Also disclosed are preformed stabilizers produced using such macromers, polymer polyols produced using such preformed stabilizers, foam-forming compositions produced using such polymer polyols, and foam produced using such compositions.

A polymeric sheet, at least partially cross-linked and/or foamed, having a substantially open cell foam structure is described. A continuous method of manufacturing of an at least partially cross-linked, open cell foamed polymeric sheet is also described.

A process can be used for producing foam panels, for the production of foam films, composed of a polymer having a glass transition temperature T.sub.g of at least 100° C. An average cell diameter of the foam panels measured according to the standard ASTM D 3576 is between 20 μm and 250 μm, and less than 20 cells having a diameter >260 μm are present per m.sup.2. The elongation at break of the foam is 4%-13% measured according to ASTM D 638.

A process can be used for producing foam panels, for the production of foam films, composed of a polymer having a glass transition temperature T.sub.g of at least 100° C. An average cell diameter of the foam panels measured according to the standard ASTM D 3576 is between 20 μm and 250 μm, and less than 20 cells having a diameter >260 μm are present per m.sup.2. The elongation at break of the foam is 4%-13% measured according to ASTM D 638.

Flexible polyurethane foams are made by reacting a polyether mixture and water with a polyisocyanate. The foams have excellent suite of properties for use in seating applications, as they are supporting, comfortable and resilient foam. A further advantage is these properties can be obtained at isocyanate indices of close to or even greater than 100.

Flexible polyurethane foams are made by reacting a polyether mixture and water with a polyisocyanate. The foams have excellent suite of properties for use in seating applications, as they are supporting, comfortable and resilient foam. A further advantage is these properties can be obtained at isocyanate indices of close to or even greater than 100.

The present invention aims to provide a method for producing a porous gel-containing liquid that is inexpensive and excellent in homogeneity. The porous gel-containing liquid production method according to the present invention is a method including: a pulverization step of pulverizing a gel of a porous body, wherein the pulverization step is carried out as multi-stage pulverization including a plurality of pulverization stages.