A covered roof includes a roof deck, an insulation board, and a coverboard. The insulation board includes a polyurethane, a polyisocyanurate, or a mix of polyurethane and polyisocyanurate cellular structure, has a density that is less than 2.5 pounds per cubic foot, and has a first planar surface and a second planar surface, each having a facer positioned adjacent thereto. The coverboard includes a polyurethane, a polyisocyanurate, or a mix of polyurethane and polyisocyanurate cellular structure, has a density greater than about 2.5 pounds per cubic foot and less than 6 pounds per cubic foot, an iso index of at least 175, and a first planar surface and a second planar surface, each having a facer positioned adjacent thereto.

A spray foam formulation used to form a spray foam insulation layer in a wall structure is described. The formulation may include the reaction product of a polyisocyanate compound and a polyol compound; a fire retardant chosen from at least one of a non-halogenated fire retardant; and a reactive halogen-containing fire retardant, and a carbohydrate. The spray foam insulation layer has an insulative R value of 3.0 to 7.2 per inch, and a density of between about 0.3 to about 4.5 pcf. Further, spray foam insulation made from the spray foam formulation may have fire retardant characteristics that are equivalent to or better than a similar spray insulation foam insulation using non-reactive halogenated fire retardants such as tris(1-chloro-2-propyl)phosphate (TCPP).

Blends, polyol premix compositions, methods of forming such compositions, foamable compositions using the premix compositions, methods of preparing foams containing the premix compositions, and foams made using the premix compositions are described. The polyol premix composition includes a polyester polyol; halogenated olefin blowing agent; and a distribution-enhancing component. In the polyol premix composition, the blowing agent, the polyester polyol, and the distribution-enhancing component form a substantially uniform composition.

Silicone foam compositions for forming foamed silicone elastomers are described herein, together with the respective foamed silicone elastomers formed therefrom and to methods of making such compositions and foamed silicone elastomers. The silicone rubber foam composition comprising: (a) one or more organopolysiloxane polymers having an average of at least two epoxide groups per molecule; (b) a Lewis acid catalyst, (c) one or more surfactants and optionally (d) a physical blowing agent. The foamed silicone elastomers are prepared by either mechanically foaming components (a), (b) and (c); or by introducing a physical blowing agent (d); and causing foaming by physical blowing.

Method of forming extruded thermoplastic foam comprising extruding a foamable composition comprising thermoplastic polymer and blowing agent, wherein said thermoplastic polymer consists essentially of ethylene furanoate moieties and optionally ethylene terephthalate moieties and wherein said extruding step comprises forcing said foamable composition from a relatively high pressure region through a die to a relatively low pressure region.

Methods are provided for producing bio-oil polyols, alkoxylating bio-oil polyols to provide polyols, and for employing the alkoxylated bio-oil polyols for making polymers or copolymers of polyesters or polyurethanes.

The present invention provides a soft polyurethane foam which is obtained by expansion molding a starting foam liquid that contains a polyol, a polyisocyanate, a crosslinking agent, a foaming agent and a catalyst. This soft polyurethane foam is configured such that: a polyether polyol having a weight-average molecular weight (Mw) of 3,000 to 12,000 and 3.5 to 4 functional groups is contained therein as the polyol; the value of (ethylene oxide groups)/(propylene oxide groups) (in terms of a molar ratio) in all compounds contained therein as the crosslinking agent is 100 or more; a short-chain polyol having a weight-average molecular weight of 1,000 or less is contained therein as the crosslinking agent; and tolylene diisocyanate is contained therein as the polyisocyanate in an isocyanate index of 70 or more.

The present disclosure relates to pyrrolidine-based catalysts for use in a polyurethane formulation. The polyurethane formulation includes the pyrrolidine-based catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound. The use of such catalysts produces high quality polyurethane foam while reducing environmental concerns that can arise during the production of polyurethane foam as well as in in the foam that is produced.

This document discloses algae-derived flexible foams, whether open-cell or closed-cell, with inherent antimicrobial and flame resistant properties, wherein a process of manufacturing includes the steps of: harvesting algae-biomass; sufficiently drying the algae biomass; blending the dried algae biomass with a carrier resin and various foaming ingredients; adding an algal-derived antimicrobial compound selected from various natural sulfated polysaccharides present in brown algae, red algae, and/or certain seaweeds (marine microalgae); and adding a sufficient quantity of dried algae biomass to the formulation to adequately create a fire resistant flexible foam material.

The present invention relates to a method for preparing a polyurethane foam, in particular an aerogel, from at least one polyisocyanate and at least one optionally recycled polyol, and to the use thereof.