Filled polyurethane composites with organic and inorganic fibers
AssigneeBoral IP Holdings (Australia) PTY Limited
InventorsAmitabha Kumar, Li Ai, Sarah Fortenberry, Russell L. Hill
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Abstract
Polyurethane composites and methods of preparation are described herein. The polyurethane composites can comprise (a) a polyurethane formed by the reaction of (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, and (ii) one or more polyols, (b) an inorganic filler, (c) an inorganic fiber, and (d) an organic fiber. Suitable organic fibers can include polyester fibers. The weight ratio of the inorganic fiber to the organic fiber can be from 1:1 to 20:1. Articles comprising the polyurethane composites described herein are also disclosed.
Claims20
A composite comprising:
- (a) from 14% to 60% by weight, based on the total weight of the composite, of a polyurethane formed by the reaction of (i) one or more isocyanates selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof, and (ii) one or more polyols;
- (b) from 35% to 85% by weight, based on the total weight of the composite, of an inorganic filler;
- (c) from 0.25% to 20% by weight, based on the total weight of the composite, of an inorganic fiber;
- and
- (d) a polyester fiber,
- wherein the weight ratio of the inorganic fiber to polyester fiber is 1:1 to 20:1, and
- wherein the polyester fiber has an average length of from 50 microns to 26 mm.
A composite comprising:
- (a) a polyurethane;
- (b) an inorganic filler;
- (c) an inorganic fiber;
- and
- (d) a polyester fiber,
- wherein the weight ratio of the inorganic fiber to polyester fiber is 1:1 to 20:1, and
- wherein the polyester fiber has an average length of from 50 microns to 26 mm.
A composite comprising:
- (a) 14% to 60% by weight, based on the total weight of the composite, of a polyurethane;
- (b) 35% to 85% by weight, based on the total weight of the composite, of an inorganic filler;
- (c) an inorganic fiber;
- and
- (d) a polyester fiber having an average length of from 50 microns to 26 mm;
- wherein the weight ratio of the inorganic fiber to polyester fiber is 1:1 to 20:1.
Dependencies are inferred from the claim text.