A water soluble polymer blend composition includes at least one water soluble polymer and at least one immiscible polymer. The water soluble polymer and the immiscible polymer can be melt processed at a temperature above their respective melt processing temperatures and quenched to form the water soluble polymer blend composition in a non-equilibrium state, such that it can exhibit a non-equilibrium morphology. Non-equilibrium morphologies can include, e.g., a microfiber morphology or a co-continuous morphology.

Disclosed herein are bio-based polymers, methods to prepare the same, bio-based polymer products, methods to degrade the same, and methods to recycle the same.

The present invention relates to fiber-plastics composites consisting of (I) at least one fiber material and (II) a plastics matrix, where the composite is characterized in that the plastics matrix is based on a two-component matrix material (IIa), where the two-component matrix material (IIa) comprises (1) a parent component comprising (A) at least one polycarbonatediol and (2) a hardener component comprising (C) at least one polyisocyanate-modified polyester with from 4 to 15% isocyanate content. The present invention also relates to a process for the production of the fiber-plastics composites and to use of these.

Compositions for producing a rigid polyurethane foam are described, comprising at least one isocyanate component, a polyol component, optionally a catalyst which catalyzes the formation of a urethane or isocyanurate bond, wherein the composition has hydrocarbons having 3, 4 or 5 carbon atoms, hydrofluorocarbons, hydrofluoroolefins (HFO), hydrohaloolefins, oxygen-containing blowing agents and/or chlorohydrocarbons as blowing agent, and also comprises acrylate and/or methacrylate copolymers as foam stabilizers.

The flame-retardant urethane resin composition contains a polyisocyanate compound, a polyol compound, a trimerization catalyst, a blowing agent, and an additive, wherein the additives include red phosphorus and a filler, and the filler has an aspect ratio of 5 to 50, an average particle diameter of 0.1 μm or larger, but smaller than 15 μm, and a melting point of 750° C. or higher.

A process for producing a polyurethane or polyisocyanurate construction board, the process comprising (i) providing an A-side reactant stream that includes an isocyanate-containing compound; (ii) providing a B-side reactant stream that includes a polyol, where the B-side reactant stream includes a blowing agent that includes a pentane and a blowing agent additive that has a Hansen Solubility Parameter (δ.sub.t) that is greater than 17 MPa.sup.−0.5; and (iii) mixing the A-side reactant stream with the B-side reactant stream to produce a reaction mixture.

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).

According to one embodiment, a halogen free roof system is described. The roof system includes a structural deck that is positioned above joists or other support members. Polyisocyanurate foam insulation is positioned atop the structural deck. The polyisocyanurate foam insulation has an isocyanate index greater than 200 and includes a polyisocyanurate core having a halogen free fire retardant. A water proof membrane is positioned atop the polyisocyanurate foam insulation. The polyisocyanurate core is able to form a sufficiently stable char when exposed to flame conditions such that the polyisocyanurate core is able to pass the ASTM E-84 test.

The present invention relates to an aqueous polyurethane dispersion and a process for preparing the same, an adhesive containing the same, and an adhesion article obtained by bonding with the adhesive. The aqueous polyurethane dispersion comprises a polyurethane having an anionic group dispersed therein, the polyurethane has a fusion enthalpy of 3 J/g-100 J/g at 20° C.-100° C. of the first temperature rising curve measured with the DSC according to DIN 65467, a weight-average molecular weight of 31,000-95,000, and the aqueous polyurethane dispersion has an acid value of 0.5 mg KOH/g-8.5 mg KOH/g. The adhesive comprising the aqueous polyurethane dispersion of the present invention has an excellent initial bonding force.

A method for forming polyurethane foams in a molding apparatus includes a step of directing one or more polyol compositions into a mold. Each of the one or more polyol compositions include a polyol, water, and a catalyst. The method also includes a step of directing an isocyanate composition into the mold to form a foamed polyurethane. The isocyanate composition includes one or more isocyanates. The one or more polyol compositions and the isocyanate composition is combined into a reaction composition. Characteristically, water concentration is in a range from 1.5 to 2 percent of the weight of the total reaction composition and the amount of isocyanate in the reaction composition is in a sufficient amount such that the isocyanate index is from about 83 to 98. A molded component made by the method is also provided.