Filled polymer composite and synthetic building material compositions

• US 7,794,817 B2
• Filed: 12/22/2005
• Issued: 09/14/2010
• 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:
  US11/317,494
• Publication Number:
  US 20060115625A1
• Time in Patent Office: 1,727 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 building material comprising:

a polyurethane formed from reactants comprising;

at least one isocyanate selected from the group consisting of monomeric di-isocyanates, monomeric poly-isocyanates, oligomeric di-isocyanates and oligomeric poly-isocyanates, wherein the isocyanate comprises between about 6 wt % and about 20 wt %, based on the total weight of the composite material;

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, wherein the first polyol comprises between about 6 wt % and about 18 wt %, based on the total weight of the composite material;

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 59.0 mg KOH/g, and wherein the second polyol comprises less than about 10 wt %, based on the total weight of the composite material, and wherein the second polyol comprises between about 5 wt % and about 20 wt %, based on the total weight of the first and second polyols being 100 wt %;

water, wherein the water comprises less than about 0.5 wt %, based on the total weight of the composite material;

one or more catalysts, wherein the polyurethane matrix is less rigid than a second polyurethane that would be formed by the reaction of the first polyol and the at least one isocyanate in the absence of the second polyol; and

an inorganic particulate material component, wherein the inorganic particulate material component comprises between 60 wt % and 72 wt %, based on the total weight of the composite material, and wherein the inorganic particulate material component comprises particles with a particle size distribution between about 0.0625 in. and about 325 mesh.

2. The building material of claim 1, wherein the composite material further comprises fibers.

3. The building material of claim 2, wherein the fibers comprise less than about 16 wt %, based on the total weight of the composite material.

4. The building material of claim 2, wherein the fibers are selected from the group consisting of fiberglass, rovings, linear tows, axial tows and any combination thereof

5. The building material of claim 2, wherein the first and second polyols are polyether polyols.

6. The building material of claim 5, wherein the first and second polyols are saturated polyols.

7. The building material of claim 1, wherein the first polyol comprises a first functionality and second polyol comprises a second functionality, and wherein the first functionality is three and second functionality is three.

8. The building material of claim 1, wherein the composite material further comprises a surfactant.

9. The building material of claim 8, wherein the surfactant comprises between about 0.2 wt % and about 0.5 wt %, based on the total weight of the composite material.

10. The building material of claim 1, wherein the inorganic particulate material component comprises one or more of a fly ash, bottom ash, or particulate glass.

11. The building material of claim 1, wherein the building material comprises a density between about 20 lb/ft³ and about 90 lb/ft³.

12. The building material of claim 1, wherein the building material comprises a flexural strength between 746 psi and 5714 psi.

13. The building material of claim 1, wherein the ratio of the total number of NCO groups in the at least one isocyante to the total number of OH groups in the first and second polyols is between about 0.5:

1 and 1.5;

1.

14. The building material of claim 1, wherein the ratio of the total number of NCO groups in the at least one isocyante to the total number of OH groups in the first and second polyols is between about 0.8:

1 and 1.1;

1.

15. The building material of claim 1, wherein the composite material further comprised a polyisocyanurate.

16. The building material of claim 1, wherein the first polyol comprises between 9.5 wt % and 16.6 wt %, based on the total weight of the composite material.

17. The building material of claim 1, wherein the second polyol comprises between 0.3 wt % and 5.5 wt %, based on the total weight of the composite material.

18. The building material of claim 1, wherein the isocyanate comprises between 9.6 wt % and 20.4 wt %, based on the total weight of the composite material.

19. The building material of claim 1, wherein the water comprises less than about 0.2 wt %, based on the total weight of the composite material.

20. The building material of claim 1, wherein the catalyst is selected from the group consisting of amine-containing catalysts, tin-containing catalysts, mercury-containing catalysts and bismuth-containing catalysts, and combinations thereof.

21. The building material of claim 1, wherein the building material is in the form of synthetic lumber.

22. The building material of claim 21, wherein the building material comprises a relatively non-porous toughening layer.

23. The building material of claim 1, wherein the building material is in the form of roofing tiles.

24. The building material of claim 1, wherein the building material is in the form of molded trim profiles.

25. The building material of claim 1, wherein the building material is in the form of siding.

26. The building material of claim 1, wherein the material is extruded.

27. The building material of claim 1, wherein the material is sprayed.

28. The building material of claim 1, wherein the building material comprises a density of about 40 lb/ft³.

29. A composite material, comprising:

a polyurethane formed from reactants comprising;

an isocyanate;

at least a first polyol and a second polyol, wherein the first polyol comprises a polyether polyol and a first hydroxyl number in the range of 365 mg KOH/g 395 mg KOH/g and the second polyol comprises a polyether polyol and 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 wherein the second polyol comprises between about 5 wt % and about 20 wt %, based on the total weight of the first and second polyols being 100 wt %; and

inorganic particulate material, wherein the inorganic particulate material comprises between 60 wt % and 72 wt %, based on the total weight of the composite material.

30. The building material of claim 29, wherein the building material comprises a density between about 20 lb/ft³ and about 90 lb/ft³.

31. The building material of claim 30, wherein the building material comprises a flexural strength between about 4500 psi and about 5700 psi.

32. The building material of claim 30, wherein the inorganic particulate material component comprises coal fly ash.

33. The building material of claim 29, wherein the building material comprises a density between about 20 lb/ft³ and about 60 lb/ft³.

34. The building material of claim 33, wherein the building material comprises a flexural strength between about 3000 psi and about 4800 psi.

35. The building material of claim 29, wherein the building material comprises a flexural strength between 746 psi and 5714 psi.

36. The building material of claim 29, wherein the building material comprises a flexural strength between about 1000 psi and about 5500 psi.

37. The building material of claim 29, wherein the first and second polyols are saturated polyols.

38. The building material of claim 29, wherein the first and second polyols are saturated polyether polyols.

39. The building material of claim 38 further comprising fibers.

40. The building material of claim 29, wherein the second polyol comprises between 10 wt % and about 20 wt %, based on the total weight of the first and second polyols.

41. The building material of claim 29, wherein the reactants further comprise one or more catalysts selected from the group consisting of amine-containing catalysts, tin-containing catalysts, mercury-containing catalysts and bismuth-containing catalysts, and combinations thereof.

42. The building material of claim 29, wherein the inorganic particulate material comprises between about 60 wt % and about 70 wt %, based on the total weight of the building material.

43. The building material of claim 29, wherein the water comprises less than about 0.5 wt %, based on the total weight of the polymer matrix and inorganic particulate material.

44. The building material of claim 29, wherein the building material is in the form of synthetic lumber.

45. The building material of claim 29, wherein the building material is in the form of siding.

46. The composite material of claim 29, wherein the second polyol comprises about 10 wt %, based on the total weight of the first and second polyols being 100 wt %.

47. The composite material of claim 46, wherein the inorganic particulate material comprises about 60 wt %, based on the total weight of the composite material.

48. The composite material of claim 47, wherein the composite material further comprises fibers.

49. The composite material of claim 48, wherein the fibers comprise about 4 wt %, based on the total weight of the composite material.

50. The composite material of claim 29, wherein the composite material comprises a density greater than about 30 lb/ft³.

51. The composite material of claim 29, wherein the composite material comprises a density of about 50 lb/ft³.

52. The composite material of claim 29, wherein the first polyol comprises a first molecular weight and the second polyol comprises a second molecular weight greater than the first molecular weight.

53. The composite material of claim 29, wherein the composite material is extruded.