165 results about "Polyisocyanurate" patented technology

Polyisocyanurate foam-forming compositions, polyisocyanurate foams, insulated assemblies, and method of making thereof are provided. The polyisocyanurate foam-forming composition comprises an organic polyisocyanate and an isocyanate-reactive composition. The isocyanate-reactive composition comprises a polyether polyol or polyester polyol with a nominal hydroxyl functionality of at least 2.0, a blowing agent composition, a trimerization catalyst composition, and a surfactant. The blowing agent is present in an amount sufficient to produce a polyisocyanurate foam from the isocyanate-reactive composition that has a density of less than 1.8 lb / ft3 (28.8 kg / m3). The blowing agent composition comprises a hydrocarbon or hydrocarbon blend in an amount of at least 6% by weight and water in an amount less than 0.2% by weight. The trimerization catalyst composition comprises an alkali metal carboxylate or an alkaline metal carboxylate and a solvent that is not isocyanate-reactive.

A panel, wherein said panel (1) comprises at least a layer-shaped substrate (5), said substrate (5) comprising base particles and a binding material which bonds said base particles together, wherein said base particles comprise comminuted particles from waste comprising rigid foam, for example waste from insulation panels comprising rigid polyurethane foam or rigid polyisocyanurate foam, wherein said waste further comprises facers, such that the comminuted particles comprise rigid foam material derived from the rigid foam and facer material derived from the facers, wherein for the comminuted particles the weight ratio of the rigid foam material to the sum of the rigid foam material and the facer material, is at most 99 percentage, and method for manufacturing such a panel (1).

The present invention relates to a reaction mixture for manufacturing an inorganic-filler based closed-cell rigid polyisocyanurate (PIR) comprising foam, the reaction mixture comprising mixing at an isocyanate index >120:At least one polyisocyanate-containing compound;At least one isocyanate-reactive compound;At least one PIR promoting catalyst;An inorganic filler composition;At least one physical blowing agent;characterised in that said inorganic filler composition has bulk density ranging from 1 to 2 g / cm3, and wherein the total amount of inorganic fillers in the reaction mixture is at least 70 wt % calculated on the total weight of said reaction mixture, without taking into account the weight of said at least one physical blowing agent.

In the method for manufacturing a polyurethane or polyisocyanurate foam insulation panel (1) having closed cells (4), two facers (5, 6) are fed in a vertical orientation through a production line (3). A liquid foam formulation (8) that comprises at least polyol and polyisocyanate is deposited between the two vertically oriented facers. The insulation panel is obtained in the production line with the two facers oriented vertically and parallel to each other in the production line, with the polyurethane or polyisocyanurate foam (2) between the two facers and with the foam adhering to both facers.

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.

High impact and penetration resistant lightweight composite panels include a foam core and an impact and penetration resistant protective layer on at least a portion of the lightweight composite panel. The foam core is a polymer and / or inorganic foam layer or sheet having first and second surfaces. A fiber mesh reinforced cementitious layer can cover one or both surfaces of the foam core. Example polymer foam cores include extruded polystyrene foam, expanded polystyrene foam, polyisocyanurate foam, or polyurethane foam. Example inorganic foam cores include perlite, ceramic microspheres, hollow glass spheres, glass foam, ceramic foam, expanded silica gel, porous wollastonite, urea-silicate foam, SiOC / SiC foam, refractory foam, and graphene. The impact and penetration resistant protective layer can be formed from polyurea, polyurethane, polyurea-polyurethane hybrid, polyaspartic, polymer-modified mineral binder, or hybrid resin-mineral composite. The protective layer can include a tightly woven scrim and / or a slip resistant filler embedded in the polymer.

The utility model discloses a fluoride-free modified polyisocyanurate foam plastic board, relates to the technical field of foam plastic boards, and aims to provide a polyisocyanurate foam plastic board which is convenient to splice and better in strength, and comprises a board body, a reinforcing component is arranged on the board body, and a connecting component is arranged at the top of the board body. The connecting assembly comprises two protruding blocks, a positioning block, two rubber sleeves and two inserting rods, the positioning block and the two protruding blocks are fixed to the bottom of the plate body, and grooves corresponding to the positioning block and the protruding blocks are formed in the bottom end of the plate body. Two plates are conveniently spliced through the grooves and the convex blocks and are fixedly connected through the insertion rods, glue is not needed for pasting, and the connection stability is higher; the reinforcing plate is mounted in the plate body, so that the supporting strength of the polyisocyanurate foam plastic plate is greatly enhanced, the probability of deformation or breakage of the foam plastic plate is reduced, and the service life of the foam plastic plate is prolonged.

Esterified arylhydroxy compounds for the production of polyurethane or polyisocyanurate. In order to provide aromatic polyols for the production of polyurethanes or polyisocyanurates which are process-technically suitable in terms of their viscosity and at the same time give the end product good physical properties and a good reaction to fire, esterified arylhydroxy compounds are proposed as polyols.

A method of manufacturing a conductive roofing board may include pouring a polyisocyanurate foam on top of a facer. The method may include laminating the polyisocyanurate foam and the facer to cure the polyisocyanurate foam and adhere the polyisocyanurate foam to the facer to form a roofing board. The method may include applying a conductive coating to an exposed surface of the facer, wherein the conductive coating has a coating weight of between about 0.1 lb / 100 sqft and 10 lb / 100 sqft. The method may include exposing the roofing board and the conductive coating to a heating device to cure the conductive coating.

A method of manufacturing a conductive roofing board may include pouring a polyisocyanurate foam on top of a facer. The method may include laminating the polyisocyanurate foam and the facer to cure the polyisocyanurate foam and adhere the polyisocyanurate foam to the facer to form a roofing board. The method may include applying a conductive coating to an exposed surface of the facer, wherein the conductive coating has a coating weight of between about 0.1 lb / 100 sqft and 10 lb / 100 sqft. The method may include exposing the roofing board and the conductive coating to a heating device to cure the conductive coating.

The present invention discloses a composition comprising (A) an organohydrogensiloxane having a cyclic siloxane portion containing silicon-bonded hydrogen atoms. The composition also comprises (B) a polyether compound having an aliphatic unsaturated group. Finally, the composition comprises (C) a hydrosilylation catalyst. The present invention also discloses an organosilicon polyether surfactant prepared by reacting components (A) and (B) in the presence of component (C). In addition, an isocyanate-reactive component comprising a polyol and the organosilicon polyether surfactant is disclosed. A composition comprising the isocyanate-reactive component, an isocyanate component containing a polyisocyanate, and a catalyst is also disclosed. Finally, a method for preparing an article comprising polyurethane and / or polyisocyanurate foam, and an article formed by the composition and / or the method are disclosed.

A polyisocyanurate insulation block assembly, including: (a) a foamed block of polyisocyanurate insulation; (b) a bottom facer underneath the foamed block of polyisocyanurate insulation; and (c) a top facer on top of the foamed block of polyisocyanurate insulation, wherein the top facer comprises an amorphous high performance plastic or a vulcanized fiber.

A method of forming spun fibers (e.g., glass fibers) having a more uniform or constrained fiber diameter and / or length distribution is disclosed. Spun fibers having improved property distributions across the fiber volume facilitate the formation of improved nonwoven fiber mats and products (e.g., coated glass facings) formed from the mats. The coated glass facings are suitable for use as facing materials, such as for gypsum or polyisocyanurate boards. Because the nonwoven mats are formed from a blend of smaller and larger fibers, and because the coating applied to the mats includes filler components having smaller and larger particle sizes, the faced wallboard can have improved air permeability properties, which allows for better prevention of leaks, blotching, and other visual defects.

A polyisocyanurate and / or polyurethane (PIR / PUR) comprising material having improved Flame. Smoke and / or Toxicity (FST) retardancy is disclosed and a method for forming said PIR / PUR comprising material. The PIR / PUR material is comprising at least 0.2 wt % of compounds having a number average equivalent weight<160 g / mol and at least one non-polymerized ethylenically unsaturated moiety based on the total weight of the PIR / PUR comprising material, and optionally 0.01 wt % up to 1 wt % of one or more radical initiator compounds based on the total weight of the PIR / PUR comprising material.

Processes, foams, foamable compositions, and blowing agents related to thermoset polymer foam compositions comprising an active hydrogen-containing compound; and a blowing agent comprising HFO-1252zc and optionally HFC-152a.

Reacting a waste polymeric product comprising a thermoset having urethane bonds, urea bonds, and / or isocyanurate bonds, a polycarboxylic acid or an anhydride thereof, a first polyether polyol having an average of from 1.8 to 7 hydroxyl groups per molecule and having a number average molecular weight of greater than 350 grams / mole, a second polyether polyol having a number average molecular weight of no greater than 350 grams / mole wherein at least 50 percent of the hydroxyl groups in the second polyether polyol are secondary alcohol can form a reaction product composition directly useful in forming new polyurethane materials.

The invention relates to a process for preparing an alkoxylated product. The aim of the invention is to provide aromatic polyols for preparing polyurethane-based and polyisocyanurate-based polymers, which ensure good miscibility with the isocyanate component and other components, have a good storage stability and render the end product flameproof. For this purpose, the invention devises a process for preparing an alkoxylated product by reacting bisphenol F with propylene carbonate and / or propylene oxide as propoxylation agent and ethylene carbonate and / or ethylene oxide as ethoxylation agent, the propoxylation agent and the ethoxylation agent being used in a molar ration of 70:30 to 45:55.

Silicone-(meth)acrylate-polyether copolymers contain a linear siloxane skeleton having a pendant (meth)acrylate-polyether moiety. The siloxane skeleton is composed of a silicone moiety having a silicon-bonded mercaptoalkyl linker (the alkyl group in the linker is bonded to the silicon atom in the silicone moiety). The pendant (meth)acrylate-polyether moiety is covalently bonded to the sulfur atom in the mercaptoalkyl linker. The pendant (meth)acrylate-polyether moiety contains (meth)acrylate-poly(alkylene glycol) units. Silicone-(meth)acrylate-polyether copolymers are useful as surfactants in polyurethane foam formulations and polyisocyanurate foam formulations.

The present invention is directed to a process for recycling of polyurethane or polyisocyanurate containing waste comprising the steps of providing a composition comprising a comminuted polyurethane or polyisocyanurate material which is obtained from isocyanate (I1) and polyol (P1), depolymerization of the comminuted polyurethane or polyisocyanurate provided in step a) in the presence of water and ammonia, separation of the amine component and the polyol components with or without the aid of an additional ammonia dosage obtained in step b), to amine rich and a amine poor phase, and treatment of the polyol components in the amine poor phase to form a polyol (P2). Furthermore, the present invention is directed to the polyol composition or polyol fragments and the isocyanate composition obtained in said process and the use of the polyol composition and the isocyanate composition or the preparation of polyurethanes or polyisocyanurates.

The present invention relates to the use of polyisocyanate compositions and trimerization catalysts for production of coatings by reaction injection molding. The present disclosure also describes the coatings obtained by the use. The correspondingly coated workpieces are also described in this disclosure. A method for coating workpieces by reaction injection molding is also described herein.

The present invention is directed to a novel polyisocyanate production process resulting in reduced coloration of the final product with high purity. The process involves the trimerization of hexamethylene diisocyanate (HDI) using a trimerization catalyst and in the presence of a liquid phosphite additive.

Modified lignin products, processes for making them, and their use to produce rigid polyurethane or polyisocyanurate foams are disclosed. The processes comprise heating a lignin source with a nitrogen source and a starved concentration of a C1-C5 aldehyde to give a reaction mixture comprising a Mannich condensation product, neutralizing the reaction mixture, and isolating the modified lignin product. The process is performed at a mass ratio of lignin source to nitrogen source within the range of 1:1 to 1:5 and at a molar ratio of nitrogen source to C1-C5 aldehyde within the range of 3.5:1 to 1:1. Polyol blends and performance additives that contain the modified lignin products are described. Rigid foams that process well and incorporate up to 60 wt. %, based on the amount of polyol component, of the modified lignin contribute to excellent flame retardancy and low-temperature R-value performance.

Method for recycling a polymer material being selected from the group consisting of polyurethanes, polyurethane ureas, polyisocyanurates, and a mixture of two or more thereof, the method comprising the steps of: (a) providing a scrap material obtained by shredding a vehicle and / or shredding a vehicle and obtaining a scrap material, the scrap material comprising one or more foam pieces made from the polymer material; (b) performing a first sorting step for selecting, from the scrap material, target foam pieces that comprise the polymer material; (c) subjecting the target foam pieces to a mechanical treatment to obtain target foam flakes with a maximum dimension smaller than 120 mm, wherein the first sorting step comprises a sorting step using one or more of optical sorting methods to sort target foam pieces based on the type of isocyanate and / or the type of polyol used to produce the target foam pieces.

The invention relates to a degradation method and a recycling method of waste polyisocyanurate, and the degradation method is as follows: aliphatic amine and basic hydroxide are used as degradation agents, and degradation is carried out under the synergistic effect of the aliphatic amine and the basic hydroxide. The recycling method comprises the following steps: mixing a product B obtained by degradation with an organic compound, and introducing gas generated by reaction of activated carbon and chlorine to obtain a product C; fully mixing and stirring a foaming agent, a catalyst, a foam stabilizer and the degraded product A to obtain a component A; and stirring the component A and the product C, and pouring into a foaming mold for foaming to prepare the flame-retardant foam. According to the method disclosed by the invention, the waste polyisocyanurate material can be efficiently degraded and recycled.

A process depolymerizes polyisocyanurate under mild conditions and low salt concentration in the reaction mixture, wherein valuable raw materials of the polyisocyanurate can be recovered in high yields and good quality, i.e. a quality allowing usage of the recycled raw materials for production of new polyurethanes, preferably polyurethane foam, or polyisocyanurates, preferably polyisocyanurate foams.

The present invention provides a reaction mixture for use in the production of polyurethane / polyisocyanurate sandwich panels having high temperature stability of up to about 230 DEG C. The polyurethane / polyisocyanurate sandwich panel can be used for producing automobile components. The present invention also provides a method of producing a polyurethane / polyisocyanurate molded article exhibiting high temperature stability.

The invention provides a polyisocyanurate pipeline with a performance maintaining structure, and relates to the technical field of heat preservation pipelines, the polyisocyanurate pipeline comprises a base pipeline, the main body of the base pipeline is of a semicircular cylindrical structure, the inner edges of the two ends of the base pipeline integrally extend outwards to be provided with surrounding flanges, the section of each surrounding flange is in an L shape, and the section of each surrounding flange is in an L shape; the outer portion of the surrounding type flange is narrower than the outer arc face of the base pipeline. The main body of the outer base pipeline is also of a semicircular cylindrical structure, and L-shaped annular assembly grooves are formed in the inner walls of the two sides of the outer base pipeline; the structure is stable and reliable, through combined fixing of the rotary buckles, the arc-shaped curved bars and the connecting hoops and the anti-loosening design of springs and double nuts in the bolt sets, a stable connecting structure is formed by the bottom base pipeline, the outer base pipeline and an existing pipeline, and the situation that the pipelines are loosened and fall off after being installed is effectively prevented; and an adaptive pipeline is further arranged, so that the bent part of the pipeline can be fixed and protected.

Disclosed is a method for producing a molded polyurethane-polyisocyanurate-fiber composite part, the method comprising obtaining a reaction mixture by mixing: (A) an isocyanate-reactive component comprising: a polyol having an average functionality of 1.8 to 5.0 and a hydroxyl number of 200 to 500; and an alkali metal catalyst obtainable by introducing an alkali metal salt or an alkaline earth metal salt into a carbamate group-containing compound R-NH-CO-R ', where R is not hydrogen and / or is not COR' '; and (B) an isocyanate component comprising: at least one isocyanate compound, and a compound comprising one or more epoxy groups; and molding the reaction mixture at a temperature between 75 DEG C and 220 DEG C, at a pressure of 50 bar or more, to obtain the molded polyurethane-polyisocyanurate-fiber composite part.

The present invention relates to a process for recycling one or more polymers selected from the group consisting of polyurethanes, polyurethane ureas, polyisocyanurates, and a mixture of two or more thereof, said one or more polymers being contained in a solid material W.