Huntsman International LLC

University of Minnesota

Christopher Ian Lindsay

Sachchida Nand Singh

Berend Eling

Christopher Ward Macosko

Steve Andre Woutters

Gordon John Seeley

G Harikrishnan

Nano-sized polyurea particles or a dispersion of polyurea particles suitable for improving the mechanical properties of a polyurethane material, said particles having at least equivalent diameter dimensions in the nanosize range of 50 nm up to 700 nm, a uniform equivalent diameter particle size distribution, an amount of urethane bonds calculated on the total amount of urea+urethane bonds in said particles of &#x3c;1%, and a glass transition temperature (Tg) of &#x3e;100&#xb0; C., preferably Tg&#x3e;120&#xb0; C., more preferably &#x3e;150&#xb0; C. measured in a second heating cycle after heating to &#x3e;220&#xb0; C. at 20&#xb0; per minute using Differential Scanning calorimetry.

Use of polyurea nanoparticles as performance modifiers in polyurethane materials

Nanodispersions of inorganic clays in isocyanate may be created via pre-exfoliation, delamination, or both of the clay and subsequent mixing with isocyanate. In an embodiment, such an isocyanate nanodispersion is reacted with an isocyanate-reactive material or substrate to form a polyurethane nanocomposite.

Clay-isocyanate nanodispersions and polyurethane nanocomposite produced therewith

Process for preparing rigid and flexible polyurethane foams by reacting a polyisocyanate, polyols and water in the presence of a catalyst and a fire retardant which is a combination of expandable graphite and phosphorous-containing compound.

Process for making rigid and flexible polyurethane foams containing a fire-retardant

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Tervuren, Belgium

Christopher Ian Lindsay