Dow Global Technolgoies LLC

Paolo Diena

Luigi L Bertucelli

Wei Zhang

Jiang Li

Beilei Wang

Gianluca Casagrande

Andrea Benvenuti

George A Klumb

Yi Zhang

Carlo Cocconi

George Alfred Klumb

A cardanol modified epoxy polyol may be used for forming a polyurethane resin system for use in applications such as coatings and composites formed by filament winding. The polyurethane resin system includes an isocyanate-reactive component that has a first cardanol component and the cardanol-modified epoxy polyol, and includes an isocyanate component that includes at least one polyisocyanate. The cardanol-modified epoxy polyol is a reaction product of an epoxy component and an epoxy-reactive component at a ratio of epoxy groups to epoxy reactive groups from 1:0.95 to 1:5, and the epoxy-reactive component includes a second cardanol component.

Cardanol modified epoxy polyol

Fiber-reinforced polyurethane structures are made with a polyol composition that contains a particulate filler such as calcium carbonate, in addition to the fibers. The polyol composition and the polyisocyanate composition are selected such that the polymer formed in their reaction has a calculated molecular weight between crosslinks (M) of from 300 to 420. The polyisocyanate component contains a urethane-modified MDI and/or a urethane-modified polymeric MDI.

Process for making long fiber-reinforced polyurethanes that contain particulate fillers

Fiber-reinforced polyurethane composite plates having a thickness of at least 12 mm contains at least 20% by weight of reinforcing fibers embedded in a polyurethane polymer matrix, which polyurethane polymer matrix has a calculated molecular weight between crosslinks of from 450 to 2500. The composite plates have excellent load-bearing properties and exhibit small permanent sets upon loading.

Fiber-reinforced polyurethane composite plates

The present invention relates to a flame-resistant composition, a fiber-reinforced polyurethane composite comprising the flame-resistant composition and the use thereof. In particular, the invention describes a flame-resistant polyurethane-composite forming composition and a combustion-modified, fiber-reinforced polyurethane composite comprising the flame-resistant polyurethane-composite forming composition, for applications in vehicles and for building products. The invention also describes a long-fiber injection molding process for the preparation of the combustion-modified, fiber-reinforced polyurethane composite. The fiber-reinforced polyurethane composite of the invention show improved fire-reaction behavior, measured as Limiting Oxygen Index (LOI), and a reduced smoke production.

Flame resistant composition, fiber reinforced polyurethane based composite comprising the flame resistant composition and the use thereof

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Modena, Italy

Paolo Diena