Described herein is a method for the preparation of a rigid polyisocyanate based foam, including mixing (a) polyisocyanate, (b) at least one compound having at least two hydrogen atoms reactive towards isocyanates, (c) optionally flame retardant, (d) blowing agent, (e) catalyst and (f) optionally further additives, to form a reaction mixture and reacting the reaction mixture to obtain the polyurethane based rigid foam where the compound reactive towards isocyanates (b) includes an aromatic polyetherpolyol (b2) and at least one compound selected from the group consisting of an aromatic polyesterpolyol (b1) and a polyetherpolyol (b3) different from polyether (b2). Also described herein is a rigid polyisocyanate based foam obtained from such a method and a polyol component for the production of a polyisocyanate based foam.

Provided is a polyol-containing composition capable of preventing a polyurethane foam from hydrolyzing and having a good foaming property, a foamable polyurethane composition, and a polyurethane foam. The polyol-containing composition for obtaining a polyurethane foam by reacting with a polyisocyanate, the polyol-containing composition comprising a polyol, a catalyst, a foaming agent, and a filler, a content of the filler in the polyol-containing composition being 8 mass % or more, the catalyst comprising a metal catalyst containing at least one selected from the group consisting of bismuth and tin.

The present disclosure relates to acid-blocked pyrrolidine catalysts for use in a polyurethane formulation. The polyurethane formulation includes the acid-blocked pyrrolidine catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound and a halogenated olefin compound. The use of such acid-blocked pyrrolidine catalysts show surprisingly low reactivity with halogenated olefin compounds yet sufficient reactivity to catalyze polyurethane formation.

This invention relates to novel macromers that comprise a polyether polyol having (meth)acrylate unsaturation. These novel macromers are the polymerization product of a glycidyl (meth)acrylate, with a polyether polyol, and optionally, an alkylene oxide, in the presence of a double metal cyanide catalyst. This invention also relates to preformed stabilizers prepared from these macromers, and to polymer polyols prepared from these novel macromers and novel preformed stabilizers. The present invention also relates to processes for preparing these compositions, to polyurethane foams comprising these polymer polyols, and to processes for preparing these polyurethane foams.

The disclosure relates to methods of making foams comprising aromatic polyester polyether polyol materials derived from the transesterification of polyethylene terephthalate with either glycerin or trimethylolpropane, wherein each of these triols, independently, has a degree of ethoxylation of from 1 to 9. Uses of the foams are further disclosed. The disclosure further relates to selection of blowing agents suitable to generate a selected end use case. Yet further, the disclosure relates to selection of end uses, properties, and environmental profiles of the foams generated according to the methods herein, and selecting formulation variables suitable to obtain the foams.

A process is described for producing PU foams, especially rigid PU foams, based on foamable reaction mixtures containing polyisocyanates, compounds having reactive hydrogen atoms, blowing agents, foam stabilizers, and possibly further additives, wherein polymer particles are additionally used, the average particle size of the polymer particles being <100 μm, preferably <70 μm, especially 5 to 50 μm.

Polyether polyols are prepared by polymerizing unsaturated monomers in a continuous phase of a base polyol. A macromer or polymerization produce of such a macromer is present during the polymerization to stabilize the polymer particles as they form. The macromer is a polyether capped with certain unsaturated epoxide compounds.

The invention pertains generally to a shelf-stable polyurethane HFO-blown two-component polyurethane foam composition which includes controlling the ratio of tin-containing catalyst(s) to potassium-containing catalyst(s).

Very soft, launderable polyurethane foams for pillow and other bedding applications are made using a quasi-prepolymer of diphenylmethane diisocyanate and a polyether polyol having a high oxyethylene content. The quasi-prepolymer is reacted with isocyanate-reactive components that include a certain monoalcohol but is devoid of or nearly devoid of a polyether polyol having a high oxyethylene content.

Disclosed are a polyol composition using carbon dioxide, a method for preparing a polyurethane foam using the polyol composition, and a polyurethane foam prepared using the method. A method for preparing a polyurethane foam includes reacting isocyanate with a polyol composition containing a polyol compound having a synthetic polyol containing carbon dioxide, a chain extender, and a foaming agent.