The present invention relates to a method for producing a PUR/PIR foam body, comprising the steps of providing a mold adapted for applying an underpressure to the interior of the mold; introducing a reaction mixture comprising an isocyanate-reactive component A and an isocyanate B into the mold, and applying an underpressure to the interior of the mold, so the underpressure acts on the introduced reaction mixture. The underpressure is applied to the interior of the mold no later than the reaction mixture has started to set in the mold, and the isocyanate index of the reaction mixture is 300.

The present disclosure provides a polymeric composition resistant to temperatures comprising Poly 2,5rBenzimidazole having intrinsic viscosity (I.V.) between 1.0 and 2.5; and at least one binder having a glass transition temperature less than the glass transition temperature of Poly2,5-Benzimidazole and intrinsic viscosity ranging between 0.2 and 1.5. The present disclosure also provides a process for preparing the polymeric composition resistant to temperatures.

Disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a reactive plasticizer; and an amine curing agent. Also disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a nonreactive plasticizer; and an amine curing agent. Also disclosed is a method of: providing a composition having a phthalonitrile compound; heating the composition to a processing temperature until the composition has a viscosity of 30-40 Pa.Math.s at the processing temperature to form a partially cured composition; placing the partially cured composition into a material chamber of an extrusion machine; heating the partially cured composition and the material chamber to within 10 C. of the processing temperature; and extruding fiber from the extrusion machine.

Disclosed is a process whereby diverse classes of materials can be 3D printed and fully integrated into device components with active properties. An exemplary embodiment shows the seamless interweaving of five different materials, including (1) emissive semiconducting inorganic nanoparticles, (2) an elastomeric matrix, (3) organic polymers as charge transport layers, (4) solid and liquid metal leads, and (5) a UV-adhesive transparent substrate layer, demonstrating the integrated functionality of these materials. Further disclosed is a device for printing these fully integrated 3D devices.

The present invention relates to a water-soluble pre-reacted binder composition, a method of its manufacture, a use of said pre-reacted binder composition, a method of manufacturing a collection of matter bound by a polymeric binder, a binder solution or dispersion comprising said pre-reacted binder composition, as well as products comprising the pre-reacted binder composition in a cured state.

Disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a reactive plasticizer; and an amine curing agent. Also disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a nonreactive plasticizer; and an amine curing agent. Also disclosed is a method of: providing a composition having a phthalonitrile compound; heating the composition to a processing temperature until the composition has a viscosity of 30-40 Pa.Math.s at the processing temperature to form a partially cured composition; placing the partially cured composition into a material chamber of an extrusion machine; heating the partially cured composition and the material chamber to within 10 C. of the processing temperature; and extruding fiber from the extrusion machine.

Self-sealing tire sealants are provided which contain fragments and/or residues of expanded solids, where the solids are selected from the group containing expandable graphite and microspheres. In some aspects, the microspheres include at least isobutane and/or isopentane as blowing agents. The microspheres may also have a shell containing at least one polymer, and in some cases the polymer is at least one copolymer of acrylonitrile and methyl acrylate. The self-sealing tire sealant may further include graphene structures. In some aspects the interior of a pneumatic vehicle tire has the self-sealing tire sealant disposed on the inner surface, opposite the tire tread, and the layer thickness of the tire sealant may be from 0.5 to 8 mm.

The present invention relates to the use of sacrificial agents to counteract the deleterious impact of gypsum contaminants on the effectiveness of certain stucco additives, particularly, water reducing agents and foaming agents, in a stucco slurry used to make gypsum wallboard.

A folding table including first and second solid core sections joined together at facing edges thereof, with the sections being formed through an injection molding process of a thermosetting resin.

Self-sealing tire sealants are provided which contain fragments and/or residues of expanded solids, where the solids are selected from the group containing expandable graphite and microspheres. In some aspects, the microspheres include at least isobutane and/or isopentane as blowing agents. The microspheres may also have a shell containing at least one polymer, and in some cases the polymer is at least one copolymer of acrylonitrile and methyl acrylate. The self-sealing tire sealant may further include graphene structures. In some aspects the interior of a pneumatic vehicle tire has the self-sealing tire sealant disposed on the inner surface, opposite the tire tread, and the layer thickness of the tire sealant may be from 0.5 to 8 mm.