A flexible polyurethane foam article exhibiting flame resistance comprises the reaction product of an isocyanate and an isocyanate-reactive component comprising a polyol reactive with the isocyanate. The isocyanate and the isocyanate-reactive component are reacted in the presence of a blowing agent and a phospholene oxide. A method of producing the flexible polyurethane foam article includes the step of reacting the isocyanate and the isocyanate-reactive component in the presence of the blowing agent and an effective amount of the phospholene oxide to form the flexible polyurethane foam article which is flame resistant.

A polyurethane foam based on MDI (diphenylmethane diisocyanate) and on a polyol with an ethylene oxide content of greater than 50%, is made by mixing, under pressure, to form a foaming liquid precursor of polyurethane foam: a first reactive liquid, referred to as liquid A, comprising (a) a urethane prepolymer based on a first portion of the MDI and on a first portion of said polyol, and (b) the second portion of the MDI in the free state, said prepolymer being dissolved in this second portion of MDI and a second reactive liquid, referred to as liquid B, comprising the second portion of said polyol and water as foaming agent. The amount of said polyol in the liquid B represents between 25% and 75% by weight of the total of said polyol; this method is advantageously used for casting a polyurethane foam into the cavity of a tire casing.

A polyurethane elastomer, e.g., for use in polyurethane mats, includes the reaction product of an isocyanate component that includes at least one isocyanate and an isocyanate-reactive component that includes (a) a first polyol component including from 40 wt % to 90 wt % of at least one polyether polyol having an average hydroxyl functionality that is greater than 2.5 and a number average molecular weight from 300 g/mol to 1,500 g/mol; (b) a second polyol component including from 2 wt % to 20 wt % of at least one ethylene oxide capped polyoxypropylene-polyoxyethylene polyol having an average hydroxyl functionality greater than 1.5 and less than 4.0, a number average molecular weight from 4,000 g/mol to 6,000 g/mol, and from 60% to 85% of a primary hydroxyl group content; and (c) a third polyol component including from 1 wt % to 20 wt % of at least one polyoxypropylene polyol having an average hydroxyl functionality greater than 1.5 and less than 4.0 and a number average molecular weight from 300 g/mol to 1,500 g/mol.

Disclosed is a composition and process for making a water blown polyurethane foam having a good balance of flow and stability. Said foams are particularly suited for thin wall motor vehicle applications, such as instrument panels.

Two-component formulation for producing open-cell flexible foams having compressive strength of 1N/cm.sup.2, contained in 2-component aerosol can with crosslinker sleeve which can be opened prior to deploying formulation from aerosol can wherein the contents thereof enter aerosol can, wherein first component is present in aerosol can and second component that is reactive to first component is present separately in crosslinker sleeve and wherein aerosol can includes prepolymer composed of 25-35% by weight MDI and 40-55% by weight of polyol mixture having free isocyanate groups, and 10-21% by weight of propellant gas mixture and crosslinker sleeve includes 4-10% by weight of crosslinker mixture, wherein weight data are based on weight of formulation. Polyol mixture includes at least one trifunctional polyether and bifunctional polyester polyols, together with flame retardant, foam stabilizer, cell opener, amine catalyst, and crosslinker mixture including ethylene glycol in deficiency relative to free isocyanate groups and amine catalyst.

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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The present invention relates to the synthesis of polymer polyols in unsaturated polyols as liquid phase, polymer polyols and their use.

Disclosed is a method comprising: a) dispersing lignin into an alcohol-containing compound having a boiling point in the range of 120 C. to 300 C. to form a lignin dispersion; and b) contacting the lignin dispersion with an alkylene carbonate, optionally in the presence of a basic compound, at a temperature in the range of from 120 C. to 200 C. and a period of time in the range of from 0.25 hours to 24 hours to form an alkoxylated lignin dispersion.

Disclosed are a method for preparing a sound-absorbing member and a sound-absorbing member. The method for preparing a sound-absorbing member includes: providing non-foaming sound-absorbing material powder and a foaming material; uniformly mixing the non-foaming sound-absorbing material powder with the foaming material and adding an auxiliary to form a sound-absorbing mixture; and foaming the sound-absorbing mixture to form foam with cells, wherein the non-foaming sound-absorbing material powder adheres to a surface and the cells of the foam. The foamed sound-absorbing material powder and the foam constitute a sound-absorbing member.

Disclosed is a composition and process for making a water blown semi-rigid polyurethane foam wherein the polyisocyanate side and the polyol side are combined under ambient temperature conditions. Said foams are particularly suited for sound and vibration management, especially in motor vehicles.