Filled polymer composite and synthetic building material compositions

• US 7,763,341 B2
• Filed: 01/23/2004
• Issued: 07/27/2010
• Est. Priority Date: 01/23/2004
• Status: Active Grant

• Current Assignee: Westlake Royal Building Products Incorporated
• Original Assignee: Century-Board USA, LLC
• Inventors: Brown, Wade
• Primary Examiner(s): CHEVALIER, ALICIA ANN
• Application Number:
  US10/764,012
• Publication Number:
  US 20050163969A1
• Time in Patent Office: 2,377 Days
• Field of Search: 428/151, 428/304.4, 524/430, 524/590
• US Class Current: 428/151
• CPC Class Codes: B29C 39/16 between endless belts
• CPC Class Codes: C04B 14/42 Glass
• CPC Class Codes: C04B 18/06 Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
• CPC Class Codes: C04B 18/08 Flue dust , i.e. fly ash
• CPC Class Codes: C04B 26/16 Polyurethanes
• CPC Class Codes: C04B 38/0067 characterised by the density of the end product
• CPC Class Codes: C04B 38/02 by adding chemical blowing agents
• CPC Class Codes: C08G 18/0895 Manufacture of polymers by continuous processes C08G18/0838 takes precedence
• CPC Class Codes: C08G 18/4816 mixtures of two or more polyetherpolyols having at least three hydroxy groups
• CPC Class Codes: C08G 2110/0066 ≥ 150kg/m3
• CPC Class Codes: C08G 2110/0083 prepared using water as the sole blowing agent
• CPC Class Codes: C08J 2375/08 from polyethers
• CPC Class Codes: C08J 5/04 Reinforcing macromolecular compounds with loose or coherent fibrous material
• CPC Class Codes: C08J 5/043 with glass fibres
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08L 2203/14 used for foams
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete
• CPC Class Codes: Y10T 428/24438 Artificial wood or leather grain surface
• CPC Class Codes: Y10T 428/24479 including variation in thickness

Abstract

The invention relates to composite compositions having a matrix of polymer networks and dispersed phases of particulate or fibrous materials. The polymer matrix contains a polyurethane network formed by the reaction of a poly- or di-isocyanate and one or more saturated polyether or polyester polyols, and an optional polyisocyanurate network formed by the reaction of optionally added water and isocyanate. The matrix is filled with a particulate phase, which can be selected from one or more of a variety of components, such as fly ash particles, axially oriented fibers, fabrics, chopped random fibers, mineral fibers, ground waste glass, granite dust, or other solid waste materials. The addition of water can also serve to provide a blowing agent to the reaction mixture, resulting in a foamed structure, if such is desired.

Claims

1. A polymer composite material, comprising:

(1) a polyurethane formed by reaction of a reaction mixture, comprising;

(a) one or more monomeric or oligomeric poly- or di-isocyanates;

(b) a first polyol comprising a polyether polyol, the first polyol having a first hydroxyl number in the range of 365 mg KOH/g to 395 mg KOH/g; and

(c) a second polyol comprising a polyether polyol, the second polyol having a second hydroxyl number in the range of 33.8 mg KOH/g to 37.2 mg KOH/g, or from 56.2 mg KOH/g to 59.0 mg KOH/g, and forming the polyurethane, wherein the polyurethane is less rigid than a second polyurethane that would be formed by the reaction of the first polyol and the one or more monomeric or oligomeric poly- or di-isocyanates in the absence of the second polyol, and wherein the second polyol is between about 5 wt % and about 20 wt %, based on the total weight of the first and second polyols being 100 wt %; and

(2) an inorganic particulate material comprising one or more of fly ash, bottom ash, particulate glass and granite tailings dispersed in the polymer matrix, the inorganic particulate material being 60 to 72 wt %, based on the total weight of the composite material.

2. The polymer composite material of claim 1, wherein the material is foamed.

3. The polymer composite material of claim 1, further comprising one or more inorganic fibers disposed throughout the only one polymer matrix.

4. The polymer composite material of claim 1, further comprising axially oriented fiber rovings disposed on, in, or beneath the surface of the composite.

5. The polymer composite material of claim 1, wherein the inorganic particulate material has a particle size distribution ranging from about 0.0625 in. to below about 325 mesh.

6. The polymer composite material of claim 1, wherein the inorganic particulate material contains less than about 0.5 wt % water.

7. The polymer composite material of claim 1, wherein the composite material is self-skinning.

8. The polymer composite material of claim 1, having a density ranging from about 20 to about 90 lb/ft³.

9. The polymer composite material of claim 1, having a density ranging from about 20 to about 60 lb/ft³.

10. The polymer composite material of claim 1, wherein the polymer matrix composite material additionally comprises a polyisocyanurate formed by reaction of the monomeric or oligomeric poly- or di-isocyanate with water.

11. The polymer composite material of claim 1, wherein the monomeric or oligomeric poly- or di-isocyanates comprise a methylene diphenyl diisocyanate (MDI).

12. The polymer composite material of claim 11, wherein the MDI has a viscosity ranging from about 25 to about 200 cp at 25°

C.

13. The polymer composite material of claim 11, wherein the MDI has an NCO content ranging from about 30% to about 35%.

14. The polymer composite material of claim 11, wherein the MDI provides at least one equivalent NCO group to one equivalent OH group from the polyols.

15. The polymer composite material of claim 14, wherein the MDI provides about 5% to about 10% excess NCO groups.

16. The polymer composite material of claim 1, wherein the ratio of isocyanates to polyols, based on equivalent weights, is from about 0.5:

1 to about 1.5;

1.

17. The polymer composite material of claim 1, wherein the ratio of isocyanates to polyols, based on equivalent weights, is from about 0.8:

1 to about 1.1;

1.

18. The polymer composite material of claim 1, wherein the second polyol is about 15 wt %, based on the total weight of the first and second polyols being 100 wt %.

19. The polymer composite material of claim 3, wherein the one or more inorganic fibers disposed in the polymer matrix are present in amounts less than 10% by weight, based on the total weight of the material.

20. The polymer composite material of claim 1, wherein the first and the second polyols are non-EO tipped polyols.

21. The polymer composite material of claim 1, wherein the first polyol is about 6 to about 18 wt % and the second polyol is greater than 0 to about 10 wt %, based on the total weight of the composite material.

22. The polymer composite material of claim 1, wherein the composite material has a flexural strength at least 1929 psi.

23. The polymer composite material of claim 1, wherein the composite material has a flexural modulus of about 118,331 psi.

24. The polymer composite material of claim 1, wherein the inorganic particulate material is one or more of a fly ash and bottom ash.

25. The polymer composite material of claim 24, wherein the inorganic particulate material is present in an amount from about 80 wt % to about 85 wt %, based on the total weight of the composite material.

26. The polymer composite material of claim 25, having a density ranging from about 20 to about 41 lb/ft³.

27. The polymer composite material of claim 25, having a density ranging from about 31 to about 38 lb/ft³.

28. The polymer composite material of claim 24, wherein the inorganic particulate material is present in an amount from greater than 80 wt % to about 85 wt %, based on the total weight of the composite material.

29. The polymer composite material of claim 24, having a flexural strength of at least 1319 psi.

30. The polymer composite material of claim 24, having a flexural strength from 1319 psi to 1929 psi.

31. The polymer composite material of claim 27, having a flexural strength of from 1319 psi to 1650 psi.

32. The polymer composite material of claim 24, having a density ranging from about 20 to about 41 lb/ft³.

33. The polymer composite material of claim 24, having a density ranging from about 31 to about 38 lb/ft³.

34. The polymer composite material of claim 24, wherein the material is foamed.

35. The polymer composite material of claim 1, wherein the composite material comprises extruded composite material.

36. The polymer composite material of claim 1, wherein the composite material comprises extruded polyurethane and inorganic particulate material.

37. The polymer composite material of claim 1, wherein the second polyol is between about 5 wt % to about 15 wt %, based on the total weight of the first and second polyols being 100 wt %.

38. The polymer composite material of claim 1, wherein the second polyol is between about 10 wt % to about 20 wt %, based on the total weight of the first and second polyols being 100 wt %.

39. The polymer composite material of claim 1, wherein the second polyol is between about 15 wt % to about 20 wt %, based on the total weight of the first and second polyols being 100 wt %.

40. A polymer composite material comprising:

(1) a polyurethane formed by reaction of a reaction mixture, comprising;

(a) one or more monomeric or oligomeric poly- or di-isocyanates;

(b) a first polyol comprising a polyether polyol, the first polyol having a first hydroxyl number in the range of 365 mg KOH/g to 395 mg KOH/g; and

(c) a second polyol comprising a polyether polyol, the second polyol having a second hydroxyl number in the range of 33.8 mg KOH/g to 37.2 mg KOH/g, or 56.2 mg KOH/g to 59 mg KOH/g, and forming the polyurethane, wherein the polyurethane is less rigid than a second polyurethane that would be formed by the reaction of the first polyol and the one or more monomeric or oligomeric poly- or di-isocyanates in the absence of the second polyol, and wherein the second polyol is between about 5 wt % and about 20 wt %, based on the total weight of the first and second polyols being 100 wt %; and

(2) 60 to 72 wt % of an inorganic particulate material, based on the total weight of the composite material.

41. The polymer composite material of claim 40, wherein the first polyol is in an amount of about 6 to about 18 wt %, and the second polyol is an amount of up to 10 wt %, based on the total weight of the composite material.

42. The polymer composite material of claim 40, wherein the composite material comprises extruded polyurethane and inorganic particulate material.

43. The polymer composite material of claim 40, wherein the first polyol has a first molecular weight, and the second polyol has a second molecular weight, wherein the first molecular weight is less than the second molecular weight.