POLYURETHANE COMPOSITE MATERIALS
First Claim
1. A polyurethane composite material comprising:
- a polyurethane formed by reaction of a reaction mixture of;
one or more monomeric or oligomeric poly- or di-isocyanates; and
at least one plant-based polyol; and
about 40 to about 85 weight percent of an inorganic filler, wherein the inorganic filler comprises coal ash.
2 Assignments
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Accused Products
Abstract
Polymeric composite materials, particularly highly filled polyurethane composite materials are described herein. Such highly filled polyurethane composite materials may be formed by reaction and extrusion of one or more polyols, one or more di- or poly-isocyanates, and from about 45 to about 85 weight percent of inorganic filler such as fly ash. Certain polyols, including plant-based polyols can be used. Certain composite materials also contain chain extenders and/or crosslinkers. The polyurethane composite material may also contain fibers such as chopped or axial fibers which further provide good mechanical properties to the composite material. Shaped articles containing the polyurethane composite material have been found to have good mechanical properties, such that the shaped articles are suitable for building applications.
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Citations
22 Claims
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1. A polyurethane composite material comprising:
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a polyurethane formed by reaction of a reaction mixture of; one or more monomeric or oligomeric poly- or di-isocyanates; and at least one plant-based polyol; and about 40 to about 85 weight percent of an inorganic filler, wherein the inorganic filler comprises coal ash. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of forming a polyurethane composite material, the method comprising:
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providing at least one plant based polyol; providing at least one poly or di-isocyanate; providing about 45 to about 85 weight percent of an inorganic filler; and extruding the at least one plant-based polyol, the at least one poly or di-isocyanate, and the inorganic filler, to produce a composite material. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification