Provided are a method for preparing an organic/inorganic hybrid thermally conductive and insulating two-component adhesive and a method for using the same. The purpose is to solve the problem that thermally conductive adhesives in the prior art cannot meet the requirements of thermal conductivity, good bonding performance and insulation characteristics at the same time. The method includes: 1. preparing an organic phase aluminum dihydrogen phosphate; 2. treating a diamond thermally conductive filler; 3. modifying polyurethane compatible with aluminum dihydrogen phosphate; and 4. preparing an organic/inorganic hybrid insulating two-component adhesive. The use method includes: coating the adhesive onto a surface of a material to be bonded, and bonding; and subjecting a resulting member to be bonded to defoaming, heating, and holding.

The present invention relates to a composition comprising a binder comprising one or more siloxane polymers, silicone resins, silicone based elastomers, and mixtures thereof, wherein said binder optionally comprises one or more cross-linker components comprising a silane and/or a siloxane containing silicon-bonded hydrolysable groups; and a hydrophilic powder and/or gel selected from one or more amorphous, porous hydrophilic silica (s) having a thermal conductivity at 20 C. and atmospheric pressure of 0.001 to 0.15 W/m.Math.K and a surface area (SBET) of between 200 and 1500 m.sup.2/g, one or more hydrophilic aerogel (s) and mixtures thereof, wherein the binder is a solution, an emulsion, or a dispersion in water. The invention also relates to the use of the composition as or in thermally or acoustically insulating materials and to coated substrates, products and articles made by using the composition.

The present invention relates to a process for the production of a rigid polyurethane foam or rigid polyisocyanurate foam, comprising the reaction of at least one polyisocyanate and of a polyol composition (PZ), where the polyol composition (PZ) comprises at least one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms, where at least one blowing agent is used during the reaction. The present invention further relates to rigid polyurethane foams or rigid polyisocyanurate foams obtainable or obtained by such a process, and also to a polyol composition (PZ) at least comprising one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms. The present invention also relates to the use of such a polyol composition (PZ) for the production of rigid polyurethane foams or rigid polyisocyanurate foams, and also to the use of a rigid polyurethane foam or rigid polyisocyanurate foam of the invention as, or for the production of, insulation materials, preferably insulation sheets, sandwich elements, hot-water tanks, boilers, coolers, insulation foams, refrigerators or freezers.

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 at least one monool (am) and 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). 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.

Disclosed herein is a highly flame retardant polyurethane spray foam composition. The composition includes 100 parts by weight to 200 parts by weight an isocyanate compound relative to 100 parts by weight of a resin mixture including 46 wt % to 75 wt % of a polyol, 10 wt % to 30 wt % of a blowing agent, and 5 wt % to 30 wt % of an additive, wherein the polyol includes 1 wt % to 10 wt % of a polyether polyol and 45 wt % to 65 wt % of an aromatic polyester polyol, and the aromatic polyester polyol has an average hydroxyl value of 250 mgKOH/g to 380 mgKOH/g.

Disclosed is a method for manufacturing an isocyanurate polyurethane-modified foam, called PUIR, including: a) providing an oil or oil mixture at least 50% by weight of the fatty acids having a carbon chain of C18 or more, the fatty acids having an overall iodine number I.sub.iodine of at least 100 g of I.sub.2/100 g; b) epoxidating at least 50% of the double bonds in the oil to form the corresponding epoxides; and c) directly reacting, in situ, the epoxides that are obtained above with isocyanate or diisocyanate groups for obtaining corresponding oxazolidone derivatives, without passing through the intermediate formation of polyols obtained from epoxides, in the presence of at least one suitable catalyst and at least one expanding agent, so as to obtain the isocyanurate polyurethane-modified foam PUIR. Also disclosed are products, such as rigid insulation material, in particular as a material or panels of rigid insulation for roofing.

Isocyanate-reactive compositions and thermally insulating rigid polyurethane foams, such as those that can be used as a thermal insulation medium in the construction of refrigerated storage devices, are disclosed. The compositions include a halogenated olefin blowing agent and a polymer polyol. The polymer polyol includes (1) a base polyol having an OH number of at least 200 mg KOH/g; and (2) polymer particles dispersed in the base polymer, wherein the polymer particles comprise the reaction product of an ethylenically unsaturated composition comprising an ethylenically unsaturated fluorinated compound.

Foam composites and methods of preparation thereof are discussed. For example, the foam composite may include a polymeric material and a particulate filler, wherein the compressive strength of the foam composite is equal to or greater than 20 psi, the density is 4 pcf to 40 pcf, and wherein the thermal conductivity is equal to or less than 0.050 W/n K, the particulate filler may include fly ash. e.g., in an amount of about of 45% to about 75% by weight with respect to the total weight of the foam composite. The foam composite may be prepared from a mixture of a polyol, an isocyanate, the particulate filler, and a liquid blowing agent having a boiling point equal to or greater than 25 C. or 30 C.

The present invention relates to a method for producing a mixture of alkoxylated polyphenols that can be used directly for producing different polyurethane materials, in particular polyurethane foams.

The present technology provides a method of manufacturing a polyurethane foam having a low thermal conductivity from a foam formulation comprising a polyol, an isocyanate, a polyurethane catalyst, a surfactant, water, and a siloxane rich composition. The siloxane rich composition may act as a nucleating agent to reduce the cell size of the foams and may reduce its thermal conductivity.