The present invention provides articles and methods related to insulation panels made from aerogels, and specifically polyimide based aerogels. Such insulation panels have a wide variety of applications, including specifically in aerospace applications.

A method can be used to improve the quality of a foam, produced in a process for continuous production of foams using a surfactant with higher molecular weight as an additive in an aqueous polymer dispersion. The process involves foaming a mixture of the aqueous polymer dispersion and the surfactant, and the mixture is mixed in a foaming machine with a mixing head line speed of less than 4 m/s. The process additionally involves mixing the foam obtained from the foaming machine in an auxiliary inline mixer connected to the foaming machine, at a mixing head line speed of 5?50 m/s. A process for continuous production of foams and a continuous production line are also provided.

The present invention relates to a preparation of a block of fiber-reinforced polyurethane/polyisocyanurate foam in which the expansion of the foam is constrained by the walls of a double belt laminator forming a tunnel, the block of fiber-reinforced polyurethane/polyisocyanurate foam being composed of cells storing a gas, advantageously having low thermal conductivity, and exhibiting a density of less than 50 kg.Math.m.sup.?3 with a content of fibers C.sub.f representing at least 4% by weight of the block of fiber-reinforced foam, in which the impregnation time of the fibers t.sub.i is less than the cream time t.sub.c of the polyurethane/polyisocyanurate foam.

Provided herein is a process for preparing a rigid polyisocyanurate foam including reacting a composition (A) including a polyesterol, a blowing agent including formic acid, a catalyst system including at least one trimerization catalyst and at least one polyisocyanate as component (B), wherein composition (A) further includes at least one polyether alcohol prepared by addition of alkylene oxides to toluenediamine. Further provided herein is a rigid polyisocyanurate foam obtained through the process described herein and the use of said rigid polyisocyanurate foam as insulating material.

The present invention provides articles and methods related to insulation panels made from aerogels, and specifically polyimide based aerogels. Such insulation panels have a wide variety of applications, including specifically in aerospace applications.

The present invention relates to a process for producing porous materials, which comprises providing a mixture comprising a composition (A) comprising components suitable to form an organic gel and a solvent mixture (B), reacting the components in the composition (A) in the presence of the solvent mixture (B) to form a gel and drying of the gel, wherein the solvent mixture (B) is a mixture of at least two solvents and the solvent mixture has a Hansen solubility parameter ?.sub.H in the range of 3.0 to 5.0 MPa-.sup.1, determined using the parameter ?.sub.H of each solvent of the solvent mixture (B). The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum insulation panels.

The present invention relates to a heat conservation-insulating material which is coated with a UV film and has maximized heat efficiency, wherein: the material uses a thermosetting water-soluble acrylic adhesive to ensure the minimum uniform coating film thickness required for corrosion prevention of a pipe and strength reinforcement during curing and allow easy installation with flexibility and sufficient working time before the installation; and a surface of the insulating material is UV-coated and thermosetting-coated by dual-cure curing method so that even a part where light or ultraviolet rays cannot penetrate can be cured, a heat conservation-insulating material having vivid colors can be obtained even when dye and pigment are added to realize various colors, and the cutting processability is excellent to enable a uniform coating on various surfaces, such as metal, plastic, glass, ceramics, stone, wood, and various building materials, or even on sharply bent shapes.

The present invention relates to a benzoxazine based copolymer aerogel obtained by reacting a benzoxazine monomer or oligomer and a comonomer selected from the group consisting of an isocyanate compound, a cyclic ether compound and an acid anhydride compound in a presence of a catalyst and a solvent, wherein said catalyst is an optional ingredient when said comonomer is an acid anhydride compound or an isocyanate compound. Benzoxazine based copolymer aerogel according to the present invention provides high thermal insulation material, while good mechanical properties and performance is maintained.

The present invention relates to a process for preparing a porous material, at least comprising the steps of providing a mixture (I) comprising a composition (A) comprising components suitable to form an organic gel and a solvent (B), reacting the components in the composition (A) in the presence of the solvent (B) to form a gel, and drying of the gel obtained in step b). According to the present invention, the composition (A) comprises a catalyst system (CS) comprising a component (C1) selected from the group consisting of alkali metal and earth alkali metal salts of a saturated or unsaturated carboxylic acid and a component (C2) selected from the group consisting of ammonium salts of a saturated or unsaturated carboxylic acid and no carboxylic acid is used as a component of the catalyst system. The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material and in vacuum insulation panels, in particular in interior or exterior thermal insulation systems as well as in water tank or ice maker insulation systems.

A rigid PUR/PIR foam is produced from at least one polyol which is synthesized from at least one polyhydric alcohol and at least one aromatic dicarboxylic acid, wherein the polyol is at least partially produced from renewable raw materials.