The disclosure generally provides methods of making natural oil-derived polyol compounds from compositions that include self-metathesized oligomers of natural oils, including methods of using such polyols to make polyurethane compositions, such as polyurethane foams.

Viscoelastic foam is made by reacting an isocyanate compound with water and a polyol mixture. The polyol mixture contains a dispersion of polyurethane or polyurethane-urea particles in a carrier polyol (a PIPA polyol) and at least one other polyol that is a homopolymer of propylene oxide or a copolymer of 20 to 99.9 weight-% propylene oxide and 0.1 to 80 weight-% ethylene oxide, has 2 to 4 hydroxyl groups per molecule and has a hydroxyl equivalent weight of 200 to 400. The VE foams are characterized by high airflows and long recovery times.

The present invention relates to a method for producing a viscoelastic polyurethane soft foam. The invention further relates to a viscoelastic polyurethane soft block foam or viscoelastic polyurethane soft molded foam having particularly high tensile strengths, which are produced by the method according to the invention, and to the use of said foams. The present invention further relates to polyol compositions which are suitable for the production of viscoelastic polyurethane foams.

A flame retarded slabstock polyurethane foam composition including polyol and polyisocyanate as main materials, and an additive for forming a general polyurethane foam except for a flame retarded agent, in which the polyol may be polyether polyol and may include 10 to 45 wt % of polyether polyol (A) having a weight-average molecular weight of 2,000 to 5,000 g/mol and 55 to 90 wt % of polyether polyol (B) having a weight-average molecular weight of 600 to 1,500 g/mol, and an isocyanate index of the composition defined by Equation 1 may be in a range of 70 to 95, and Equation 1 may be Isocyanate index=mole of isocyanate group (NCO)/mole of hydroxyl group (OH)×100.

Metathesized triacylglycerol polyols, fractionated polyol variants thereof, and their related physical and thermal properties are disclosed.

Tertiary amine catalysts having isocyanate reactive groups capable of forming thermally stable covalent bonds able to withstand temperatures from 120° C. and higher and up to 250° 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); 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.

Embodiments herein are related to hydrophilic open cell foams. In an embodiment, an article is included having an open cell foam structure. The open cell foam structure can include a hydrophilic polyurethane polymer comprising a reaction product of a polyol and/or polyamine component and an isocyanate, the polyol and/or polyamine component comprising a mixture of functionalized and non-functionalized polyols and/or polyamines in a ratio by weight of about 5:95 to about 95:5 of functionalized to non-functionalized.

Methods for recovering monomers from polymers, such as polyurethanes (including thermoset polyurethanes) include heating the polymer to depolymerize the polymer and release the monomer. The monomer may be directly recovered. The polymer may include a poly(β-methyl-δ-valerolactone) (PMVL) block and the monomer recovered may be β-methyl-δ-valerolactone (MVL).

A flame retardant slabstock polyurethane foam composition includes polyol and polyisocyanate as main ingredients and an ordinary additive, excluding a flame retardant, for forming polyurethane foams. The polyol is bio-polyetherpolyol derived from vegetable oil and comprises 50% to 90% by weight of polyetherpolyol (A) having a weight average molecular weight of 3,000 to 6,000 g/mol and 10% to 50% by weight of polyetherpolyol (B) having a weight average molecular weight of 500 to 1,000 g/mol. An isocyanate index of the polyol defined by the following Equation 1 is 70 to 95

[00001]$\begin{array}{cc}\mathrm{Isocyanate}.Math..Math.\mathrm{Index}=\frac{\mathrm{Number}.Math..Math.\mathrm{of}.Math..Math.\mathrm{moles}.Math..Math.\mathrm{of}.Math..Math.\mathrm{iscocyanate}.Math..Math.\mathrm{groups}.Math..Math.\left(\mathrm{NCO}\right)}{\mathrm{Number}.Math..Math.\mathrm{of}.Math..Math.\mathrm{moles}.Math..Math.\mathrm{of}.Math..Math.\mathrm{hydroxyl}.Math..Math.\left(\mathrm{OH}\right).Math..Math.\mathrm{groups}}\times 100.& \left[\mathrm{Equation}.Math..Math.1\right]\end{array}$

This invention relates to a method of preparing a microcellular polyurethane elastomer by reacting naphthalene diisocyanate with a polyol to prepare a prepolymer containing an isocyanate (NCO) group, followed by mixing the prepared polyurethane prepolymer with a plasticizer, water, an emulsifier and the like, and then foaming the prepolymer blend to prepare a polyurethane elastomer, wherein the emulsifier is a mixture of (a) a compound selected from the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 2,4-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, hexamethylene diisocyanate, 1,4′-cyclohexane diisocyanate and mixtures thereof, and (b) a C.sub.2-10 hydrocarbon having a molecular weight of 500 or less with two to four hydroxyl groups, or mixtures thereof. The method of the invention can optimize the viscosity and properties of the prepolymer resulting from the reaction of naphthalene diisocyanate with a polyol, thus improving processability.