The present disclosure is related to a catalyst for PIR/PUR foam production comprising a compound having the general formula (I) wherein R.sub.1 and R.sub.2 are independently selected from a C.sub.1-C.sub.18 straight-chain or branched alkyl group, unsubstituted or substituted with one or more hydroxyl, amino or aminoalkyl groups, or R.sub.1 and R.sub.2, taken together, form a 5- or 6-membered ring or 7-membered bicyclic structure, one of the members of the ring or bicyclic structure being X, wherein X is selected from CH.sub.2, O, S, NCH.sub.3 or NCH.sub.2COOM, wherein R.sub.3 and R.sub.4 are independently selected from hydrogen or a C.sub.1-C.sub.4 straight-chain or branched alkyl group and wherein M is an alkali metal ion or a quaternary ammonium ion, as well as to a process for production of said compound and uses thereof and to a process for the production of PIR/PUR foam or flexible foam in the presence of the catalyst of the present disclosure.

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Tertiary amine catalysts having isocyanate reactive groups that are capable of forming thermally stable covalent bonds able to withstand temperatures up to 120 C. are disclosed. These catalyst can be used to produce polyurethane foam having the following desirable characteristics: a) very low chemical emissions over a wide range of environmental conditions and isocyanate indexes (e.g., indexes as low as 65 but higher than 60) while meeting all physical property requirements; b) sufficient hydrolytic stability to maintain the catalyst covalently bound to foam without leaching of tertiary amine catalyst when foam is exposed to water or aqueous solutions even at temperatures higher than ambient (temperature range 25 C. to 90 C.); and c) stable contact interface between the polyurethane polymer and other polymers (for example polycarbonate) with minimal migration of tertiary amine catalyst from polyurethane polymer to other polymers yielding no noticeable polymer deterioration at the point of contact even under conditions of heat and humidity.

Additives for making polyurethanes are disclosed. The additives are based on combining specific carboxylic acids or carboxylic di-acids together with a gelling catalysts obtained when mixing an isocyanate-reactive tertiary amine catalysts with dimethyl tin di carboxylate salts and/or dimethyltin mercaptide salts.

The present invention relates to an insulation body based a hard, fine-cell and open-cell polyurethane/polyisocyanurate foam with a barrier film, and a method for producing same.

Process for producing cold-cure flexible slabstock PU foams by reaction of at least one polyol component and at least one isocyanate component in the presence of water and at least one catalyst and at least one crosslinker, wherein no nitrogen-containing crosslinkers having an expanded OH number above 1000 mg KOH/g are employed in a total amount >0.5 parts by weight, preferably >0.1 parts by weight, based on 100 parts by weight of polyol.

Novel thermolatent bases and their use as catalysts for the preparation of polyurethanes or epoxy resins are disclosed herein. A process for the preparation of polyurethanes or epoxy resins in the presence of the catalyst is also disclosed.

The present invention concerns a method for producing polyurethane foams by reacting an isocyanate component with a component reactive to isocyanates, which comprises at least one polyether carbonate polyol, and wherein the reaction takes place in the presence of urea or derivatives thereof. Furthermore, the invention concerns polyurethane foams produced by the method according to the invention and their application.

Tertiary amine catalysts having isocyanate reactive groups that are capable of forming thermally stable covalent bonds able to withstand temperatures up to 120 C. are disclosed. These catalyst can be used to produce polyurethane foam having the following desirable characteristics: a) very low chemical emissions over a wide range of environmental conditions and isocyanate indexes (e.g. indexes as low as 65 but higher than 60) while meeting all physical property requirements; b) sufficient hydrolytic stability to maintain the catalyst covalently bound to foam without leaching of tertiary amine catalyst when foam is exposed to water or aqueous solutions even at temperatures higher than ambient (temperature range 25 C. to 90 C.); and c) stable contact interface between the polyurethane polymer and other polymers (for example polycarbonate) with minimal migration of tertiary amine catalyst from polyurethane polymer to other polymers yielding no noticeable polymer deterioration at the point of contact even under conditions of heat and humidity.

A polyurethane catalyst comprises a sodium compound, the sodium compound being 1 to 60 wt % of the polyurethane catalyst by the mass percent, and further comprises a tertiary amine and/or pyridine compound. The sodium compound and the tertiary amine and/or pyridine compound achieve a synergistic effect; during the catalysis of the polymerization of isocyanate and polyalcohol, the speed of the polymerization reaction is increased; and the prepared polyurethane material has excellent physical properties, does not contain any heavy metal element at all, is an environment-friendly catalyst, solves the technical problem of ensuring environmental protection, safety and the catalytic efficiency of the polyurethane catalyst, and is particularly applicable to the preparation of polyurethane synthetic leather resin slurry, a polyurethane elastomer (prepolymer), a polyurethane coating, a polyurethane adhesive, a polyurethane composite material, flexible polyurethane foam, and a rigid polyurethane material.

One embodiment of the present invention provides a curable composition, including a polyfunctional isocyanate compound, a compound selected from the group consisting of a multivalent alcohol and an epoxy compound, and a base amplifier.