FLAME RESISTANT COMPOSITION, FIBER REINFORCED POLYURETHANE BASED COMPOSITE COMPRISING THE FLAME RESISTANT COMPOSITION AND THE USE THEREOF
First Claim
1. A flame-resistant polyurethane-composite forming composition comprising a curable polyurethane resin, a filler and a fiber, the resin comprising an isocyanate-reactive composition and an isocyanate composition, whereina) the isocyanate-reactive composition comprises:
- a polyol component comprising at least one polyether polyol having a nominal functionality of at least 2 and a molecular weight of 150 to 1,000, in an amount of at least 10% by weight of the curable polyurethane resin; and
at least one isocyanate-reactive brominated compound, in an amount of at least 6% by weight of the curable polyurethane resin;
b) the isocyanate composition comprises a polyisocyanate component comprising at least one methane diphenyldiisocyanate (MDI) and/or polymeric MDI, having a nominal functionality of at least 2, in an amount of at least 20% by weight of the curable polyurethane resin;
c) the filler comprising at least one metal hydrate particulate filler selected from Al(OH)3, Mg(OH)2 and hydromagnesite, in an amount of at least 10% by weight of the flame-resistant polyurethane-composite forming composition; and
d) the fiber being selected from glass fiber, carbon fiber, boron fiber, and high-melting polymeric fibers, in an amount of at least 20% by weight of the flame-resistant polyurethane-composite forming composition.
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Accused Products
Abstract
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 behaviour, measured as Limiting Oxygen Index (LOI), and a reduced smoke production.
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Citations
32 Claims
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1. A flame-resistant polyurethane-composite forming composition comprising a curable polyurethane resin, a filler and a fiber, the resin comprising an isocyanate-reactive composition and an isocyanate composition, wherein
a) the isocyanate-reactive composition comprises: -
a polyol component comprising at least one polyether polyol having a nominal functionality of at least 2 and a molecular weight of 150 to 1,000, in an amount of at least 10% by weight of the curable polyurethane resin; and at least one isocyanate-reactive brominated compound, in an amount of at least 6% by weight of the curable polyurethane resin; b) the isocyanate composition comprises a polyisocyanate component comprising at least one methane diphenyldiisocyanate (MDI) and/or polymeric MDI, having a nominal functionality of at least 2, in an amount of at least 20% by weight of the curable polyurethane resin; c) the filler comprising at least one metal hydrate particulate filler selected from Al(OH)3, Mg(OH)2 and hydromagnesite, in an amount of at least 10% by weight of the flame-resistant polyurethane-composite forming composition; and d) the fiber being selected from glass fiber, carbon fiber, boron fiber, and high-melting polymeric fibers, in an amount of at least 20% by weight of the flame-resistant polyurethane-composite forming composition. - View Dependent Claims (3, 5, 6, 7, 8, 9, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 30, 31)
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2. (canceled)
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4. (canceled)
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10-12. -12. (canceled)
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24-29. -29. (canceled)
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32-35. -35. (canceled)
Specification