Dow Global Technolgoies LLC

Dow Turkiye Kimya Sanayi Ve Ticaret Ltd Sirketi

Giuseppe Vairo

Francois M Casati

Scott T Matteucci

Paul A Cookson

Chan Han

Elena Ferrari

Luigi L Bertucelli

Irena Amici-Kroutilova

Robert C Cieslinski

Paolo Golini

Rossella Riccio

Cecilia Girotti

Luca Lotti

Giuseppe Lista

Eric M Rexrode

Francesca Pignagnoli

Maurizio Guandalini

Dongkyu Kim

Kelly R Flaherty

Alberto Fangareggi

Esma Atlandi

Luciano Zanacchi

Martino Di Serio

Riccardo Tesser

Swithin P Adu-Peasah

Matthew A Robinson

Michael J Skowronski

Luigi Bertucelli

Elio Santacesaria

Francesco Cammarota

Nicola Mandato

A rigid polyurethane foam formulation comprising a polyol composition comprising, by weight based on the weight of the polyol composition, more than 70% of at least one polyester polyol having an average hydroxyl number of from 150 to less than 300 mg KOH/g and an average functionality of at least 2; a blowing agent comprising water and an auxiliary blowing agent; a silicone copolymer surfactant; from 1% to 5% by weight based on the weight of the polyol composition, of a cyclic siloxane having a surface tension less than 21 dynes/cm at 25° C., wherein the weight ratio of the cyclic siloxane to the silicone copolymer surfactant is from 0.6 to less than 2.27; a catalyst, and optionally a flame retardant; and a polyisocyanate; such that the isocyanate index is in the range of from 180 to 500; a rigid polyurethane foam formed from the foam formulation; and a method of forming a rigid polyurethane foam.

Rigid polyurethane foam formulation and foam made therefrom

External thermal insulation composite systems described herein include a concrete or masonry wall and a multilayer thermal insulation board disposed on the concrete or masonry wall. The multilayer thermal insulation board includes at least one closed cell foam layer comprising polyurethane and polyisocyanurate having an open cell volume of less than 20% by volume according to ASTM D 6226 and at least one open cell foam layer comprising polyurethane and polyisocyanurate having an open cell volume of greater than 80% by volume according to ASTM D 6226.

Polyurethane-based insulation board

External thermal insulation composite systems described herein include a concrete or masonry wall and a thermal insulation board on the concrete or masonry wall. The thermal insulation board includes a polyurethane/polyisocyanurate foam having a density of less than 70 kg/maccording to ASTM D 1622. Methods of preparing the external thermal insulation composite systems and the thermal insulation boards are also described.

Glass fiber-reinforced polyurethane/polyisocyanurate foam insulation board

Embodiments of the present disclosure are directed towards polyol compositions including a dispersion of polyisocyanate polyaddition particles in a carrier polyol, wherein the polyisocyanate polyaddition particles have an average particle diameter from 0.1 to 10.0 microns and the dispersion has a solids content from 5 wt % to 50 wt % based upon a total weight of the dispersion, and a polyester polyol that is from 1 wt % to 98 wt % of the polyol composition based upon a total weight of the polyol composition.

Polyol compositions

A method of producing a polyurethane based foam that includes providing a ground crop residue having an average particle size of less than 10 mm and that is prepared by grinding crop residues, providing a polyurethane system that includes an isocyanate component and an isocyanate-reactive component, of which the polyurethane system has an isocyanate index from 70 to 350, forming a modified polyurethane system by adding the ground crop residue to the polyurethane system in a range from 1.0 wt % to 20.0 wt %, based on a total weight of the modified polyurethane system, and forming the polyurethane based foam so as to have an applied density from 30 kg/m3 to 75 kg/m3, according to ASTM D-1622, and to have the ground crop residue embedded within polyurethane polymers that are a reaction product of the isocyanate component and the isocyanate-reactive component of the polyurethane system.

Polyurethane foams with agricultural by-products

Embodiments of the present disclosure are foam formulations. As an example, foam formulation can include a polyol composition having an amine-imitated polyol that is from 10 percent to 20 percent of a total weight of the polyol composition and an additional polyol that is from 80 percent to 90 percent of the total weight of the polyol composition, a polyisocyanate, a blowing catalyst, and a gel catalyst, where a combination of the blowing catalyst and the gel catalyst is from 0.5 percent to 1.5 percent the total weight of the polyol composition and where the blowing catalyst is from 50 percent to 100 percent of a total weight of the blowing catalyst and the gel catalyst.

Foam formulations

A process of making a polyurethane or polyisocyanurate foam comprises the step of mixing under low pressure: (A) An isocyanate; (B) A compound reactive with the isocyanate, e.g., a polyol; (C) A liquid blowing agent; and (D) Carbon dioxide.

Low pressure process for frothing polyurethane or polyisocyanurate

A process is disclosed for preparing a elastomer by contacting under reaction conditions: a) an isocyanate component comprising an isocyanate-terminated prepolymer having an isocyanate (NCO) content of 10 to 30 weight percent where the prepolymer is the reaction product of a stoichiometric excess of one or more di- or poly-isocyanate compounds, collectively referred to hereinafter as isocyanate component, with a first polyol component; b) a second polyol component; and c) an effective amount of a blowing agent to provide a polyurethane elastomer with a density of from 200 to 1200 kg/m; wherein a) and b) are used at an isocyanate index of from 85 to 115, and at least one of the first polyol composition and the second polyol composition contains at least one hydroxymethyl-containing polyester polyol.

Polyurethane elastomers from renewable resources

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Correggio, Italy

Giuseppe Vairo