489 results about "Polyisocyanurate" patented technology

A composite recovery board (10) containing a foam core (11) of polyisocyanurate, polyurethane materials or mixtures thereof; a facer (15), applied to one major surface (13) of the foam core, where the facer includes polymer materials, reinforced polymer materials, cellulosic materials, paper, aluminum foil or trilaminates thereof, wherein the reinforced polymer material and the cellulosic material are reinforced with glass strands, glass fibers, or mixtures thereof; and, gypsum board (14), applied to the opposite major surface (12) of the foam core. A method of reroofing a roof by applying composite recovery boards of the present invention to a roof deck; and, applying a weather protective layer over the recovery boards. A continuous method of making a composite recovery board by feeding gypsum board (14) into a laminator assembly (21); depositing a foamable polymer liquid (36) onto the gypsum board; feeding a facer material (15) into the laminator assembly above the foamable polymer liquid; allowing the polymer liquid to rise between the gypsum board and facer material forming polymer foam of a pre-determined thickness; curing the polymer foam under heat (44) to create the composite board; and cutting the composite board to desired lengths.

The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a sterically hindered amine catalyst.

A process for the manufacturing of a core forming a carrying structure for decorative laminates. The core comprises particles of cured, and optionally foamed, rigid, polyurethane, polyisocyanurate and / or phenolic resin. The particles are bonded to each other in a pressing procedure with a bonding agent comprising an adhesive such as a polymerizing monomer.i) The particles are achieved by grinding cured, and optionally foamed, rigid, polyurethane, polyisocyanurate and / or phenolic resin so that it passes through a 2 mm screen, preferably a 1 mm screen,ii) 100 parts per weight of particles is mixed with 1-100 parts per weight of fiber, the fiber additive having an average length in the range 1-15 mm.iii) The particle-fiber mixture is allowed to absorb a selected amount of water, the amount of water being in the range 1-15% by weight, The water is either added at any stage before the adding of bonding agent, and / or being used as a solvent in the bonding agent, and that,iv) 85 parts per weight of the particle mixture is mixed with 2-15 parts per weight of a bonding agent, the bonding agent selected from the group consisting of,a) A mixture of polyols, such as polyester or polyether, crude methylene diphenyl diisocyanate and possibly a small amount of blowing agent in a ratio forming a polymeric resin with a density in the range 600-1400 kg / m3.b) A formaldehyde based resin such as phenol-formaldehyde resin, urea-formaldehyde resin, melamine-urea-formaldehyde resin, melamine-urea-phenol-formaldehyde resin or phenol-resorcinol-formaldehyde resin, orc) Polyvinyl acetate resin.v)The mixture is applied between the belts of the continuos belt press or the press plates of a static press, optionally with at least one intermediate carrier web, the belts or press plates allowing a mainly uniform and specified material thickness to form. A slightly porous and preconditioned core with a selected water content in the range 0.8-12% is hereby achieved. The invention also relates to a decorative laminate achieved through the process.

The invention discloses a composition for preparing highly fire-resistant polyisocyanurate foam. Based on the total quantity of the composition, the composition comprises the following components in percentage by weight: 30-60 percent of polyester polyol and / or polylol containing tri-(2-ethoxyl) isocyanurate units, 0-7 percent of polyether polyol, 0-7 percent of low molecular weight polylol or polyamine containing active hydrogen atoms, 3-35 percent of reactive flame retardant, 1-15 percent of solid flame retardant, 0-30 percent of liquid organic flame retardant, 0.2-2 percent of water, 1-4 percent of catalyst, 0.5-3 percent of foam stabilizer and 10-25 percent of physical foaming agent. Compared with a conventional PIR (Polyisocyanurate) composition, the composition system has the advantages of stability in material foaming rise, good cohesiveness of foam with plane materials, and the like. Compared with conventional polyurethane foam and PIR foam, foam prepared from the composition system has the advantages of excellent flame resistance and good compressive strength and dimensional stability.

This invention discloses a bi-component foaming system and its product used for fireproof plugging of buildings. The bi-component foaming system is a fireproof plugging material, and is prepared by mixing components A and B at a ratio of (1-4):2, and reacting. Compoent A is composed of polyester polyol, polyether polyol, catalyst, foaming agent, foaming stabilizer and composite flame retardant. Component B is composed of polyisocyanates. The basic component of the bi-component foaming system and its product is flame retardant bi-component polyurethane foam plastic. The flame retardancy technique in this invention is much different from traditional flame retardancy technique using polyurethane foam plastic as the fireproof plugging material. Firstly, hollow microbeads are added during the preparation of polyurethane foam plastic, which can improve flame retardant effect, reduce the material viscosity, improve processability, and reduce the heat conductivity of polyurethane foam plastic. Thus polyurethane foam plastic with good heat insulation effect can be obtained. Secondly, polyisocyanurate is used to modify polyurethane foam plastic, which can improve the flame retardancy of polyurethane foam plastic. Thirdly, the synergistic flame retardant effect of polyisocyanurate, ammonium polyphosphate and expandable graphite can largely improve the flame retardancy of polyurethane foam plastic, and can largely reduce the addition amount of flame retardant with the same flame retardant effect.

The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a surfactant component which comprises a non-silicone surfactant and is substantially absent of a silicone surfactant, and a tertiary amine catalyst.

A process for manufacturing an insulation board comprising a rigid polyisocyanurate foam core having two major surfaces and a facing material on at least one of the major surfaces, comprising (a) conveying a facing material along a production line for attachment to one major surface of the core; (b) applying a foam-forming mixture of polyisocyanurate to the facing material such that the mixture is applied along the entire width of the facing material; (c) optionally conveying a second facing material along the production line for attachment to the other major surface of the core; (d) conveying the facing material with applied foam-forming mixture into a laminator which comprises a gap for foam expansion and allowing the mixture to foam and expand to fill the gap within the laminator; and (e) curing the foam. The process provides excellent boardstock thickness control, minimal wasted densification at the foam / facer interface, greater compressive strength and high line speed.

Foam-forming compositions are disclosed which contain a mixture of 2-chloro-3,3,3-trifluoropropene and at least one hydrofluoroolefin. Also disclosed is a closed-cell polyurethane or polyisocyanurate polymer foam prepared from reaction of an effective amount of the foam-forming composition with a suitable polyisocyanate. Also disclosed is a process for producing a closed-cell polyurethane or polyisocyanurate polymer foam by reacting an effective amount of the foam-forming composition with a suitable polyisocyanate.

The present invention provides a method for producing isocyanate, which is preferably used in the field of optical materials and is widely used as a raw material for polyurethane-based materials and polyisocyanurate-based materials, including a process capable of improving the productivity of hydrochloride . The manufacturing method of chain aliphatic isocyanate or cycloaliphatic isocyanate of the present invention comprises making chain aliphatic amine or cycloaliphatic amine and hydrogen chloride reaction, obtains chain aliphatic amine hydrochloride or cycloaliphatic amine A method for producing a chain aliphatic or cyclic aliphatic isocyanate according to a hydrochloride step, wherein the step is carried out at a pressure higher than atmospheric pressure by 0.01 MPa or more.

A construction board comprising a cellular body including at least one planar surface, where the cellular body includes a polyurethane or polyisocyanurate cellular structure, where the cellular structure has a density greater than about 2.5 pounds per cubic foot, an ISO index of at least 270, and where the cellular body includes at least 5.0% by weight flame retardant based on the weight of the cellular body.

Polyester polyols containing adducts formed from Diels-Alder and Ene reactions are disclosed. Processes for making the polyester polyols and uses of the polyester polyols as polyurethane coatings, adhesives, sealants, elastomers, and foams are also disclosed. In some embodiments, the polyester polyols contain biorenewable adducts based on maleic anhydride and farnesene and have particular application in making rigid and flexible polyurethane or polyisocyanurate foams.

A covered low-slope or flat roof comprising (a) a roof deck, (b) an optional insulation board including a polyurethane or polyisocyanurate cellular structure having a density that is less than 2.5 pounds per cubic foot, (c) a coverboard including a polyurethane or polyisocyanurate cellular structure having a density greater than about 2.5 pounds per cubic foot, and (d) a membrane.