Fungi resistant asphalt and asphalt sheet materials

• US 20040192132A1
• Filed: 03/15/2004
• Published: 09/30/2004
• Est. Priority Date: 03/20/2003
• Status: Abandoned Application

• Current Assignee: Johns Manville International, Inc. (Berkshire Hathaway Incorporated)
• Original Assignee: Johns Manville International, Inc. (Berkshire Hathaway Incorporated)
• Inventors: Moore, Anthony E., Bogrett, Blake Boyd, Bratsch, Angela R., Fay, Ralph Michael
• Application Number:
  US10/801,733
• Publication Number:
  US 20040192132A1
• Time in Patent Office: Days
• US Class Current: 442/123
• CPC Class Codes: B32B 11/10 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 2307/7145 Rot proof, resistant to bacteria, mildew, mould, fungi
• CPC Class Codes: B32B 2419/06 Roofs, roof membranes
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 5/024 Woven fabric
• CPC Class Codes: C08K 5/0058 Biocides; macromolecular substances as carriers for biocide material A01N25/10
• CPC Class Codes: C08L 2666/66 Substances characterised by their function in the composition
• CPC Class Codes: C08L 2666/78 Stabilisers against oxidation, heat, light or ozone
• CPC Class Codes: C08L 2666/80 Metal-containing stabilizers
• CPC Class Codes: C08L 95/00 Compositions of bituminous materials, e.g. asphalt, tar, pitch
• CPC Class Codes: E04B 1/665 Sheets or foils impervious to water and water vapor
• CPC Class Codes: E04B 1/7654 comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings
• CPC Class Codes: E04B 1/767 Blankets or batts with connecting flanges
• CPC Class Codes: E04B 2001/7691 Heat reflecting layers or coatings
• CPC Class Codes: E04B 9/045 being laminated
• CPC Class Codes: E04D 13/002 Provisions for preventing vegetational growth, e.g. fungi, algae or moss
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
• CPC Class Codes: Y10T 428/249955 Void-containing component partially impregnated with adjacent component
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31815 : Of bituminous or tarry residue
• CPC Class Codes: Y10T 442/2525 : Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
• CPC Class Codes: Y10T 442/2533 : Inhibits mildew
• CPC Class Codes: Y10T 442/681 : Spun-bonded nonwoven fabric

Abstract

A fungi resistant asphalt is combined with a base sheet to form a fungi resistant asphalt containing sheet material. Typically, the base sheet is a fibrous base sheet that, by itself, may or may not be fungi resistant. The fungi resistant asphalt is at least partially absorbed by the base sheet to form the fungi resistant asphalt containing sheet material and typically forms one or both major surfaces of the fungi resistant asphalt containing sheet material.

Claims

1. A fungi resistant asphalt, comprising:

asphalt; and

a fungi growth-inhibiting agent in the asphalt in amounts that result in a fungi resistant asphalt having more fungi growth resistance than the asphalt without the fungi growth-inhibiting agent.

2. The fungi resistant asphalt according to claim 1, wherein:

the fungi resistant asphalt tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant.

3. The fungi resistant asphalt according to claim 1, wherein:

the fungi resistant asphalt tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant with no observable fungi growth.

4. The fungi resistant asphalt according to claim 1, wherein:

the asphalt without the fungi growth-inhibiting agent is not fungi growth resistant; and

the fungi resistant asphalt tested in accordance with ASTM Test Designation D 2020-92 is fungus resistant.

5. The fungi resistant asphalt according to claim 1, wherein:

the asphalt without the fungi growth-inhibiting agent is not fungi growth resistant; and

the fungi resistant asphalt tested in accordance with ASTM Test Designation G 21-96 has a rating of 1 or less.

6. The fungi resistant asphalt according to claim 1, wherein:

the fungi growth-inhibiting agent comprises 2-(4-Thiazolyl) Benzimidazole.

7. The fungi resistant asphalt according to claim 6, wherein:

the fungi resistant asphalt contains between 200 and 2000 ppm 2-(4-Thiazolyl) Benzimidazole.

8. The fungi resistant asphalt according to claim 6, wherein:

the fungi resistant asphalt contains between 300 and 700 ppm 2-(4-Thiazolyi) Benzimidazole.

9. The fungi resistant asphalt according to claim 1, wherein:

the fungi resistant asphalt contains an odor-reducing additive in an amount sufficient to substantially eliminate odor that would otherwise be emitted by the fungi resistant asphalt.

10. The fungi resistant asphalt according to claim 1, wherein:

the fungi growth-inhibiting agent includes two or more fungi growth-inhibiting agents.

11. The fungi resistant asphalt according to claim 10, wherein:

the fungi growth-inhibiting agent includes 2-(4-Thiazolyl) Benzimidazole and Zinc Pyrithione.

12. An asphalt containing sheet material, comprising:

a fibrous base sheet having a first major surface and a second major surface;

the fibrous base sheet containing a fungi resistant asphalt comprising an asphalt having a fungi growth-inhibiting agent therein in amounts that result in the fungi resistant asphalt having more fungi growth resistance than the asphalt without the fungi growth-inhibiting agent.

13. An asphalt containing sheet material, comprising:

a fibrous base sheet having a first major surface and a second major surface; and

a fungi resistant asphalt layer on the first major surface of the fibrous base sheet that is partially absorbed into the fibrous base sheet;

the fungi resistant asphalt layer comprising an asphalt having a fungi growth-inhibiting agent therein in amounts that result in the fungi resistant asphalt having more fungi growth resistance than the asphalt without the fungi growth-inhibiting agent.

14. The asphalt containing sheet material according to claim 13, wherein:

the second major surface of the fibrous base sheet is essentially free of asphalt.

15. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant.

16. The asphalt containing sheet material according to claim 15, wherein:

the second major surface of the fibrous base sheet is essentially free of asphalt.

17. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant with no observable fungi growth.

18. The asphalt containing sheet material according to claim 17, wherein:

the second major surface of the fibrous base sheet is essentially free of asphalt.

19. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation D 2020-92 is fungus resistant.

20. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation G 21-96 has a rating of 1 or less.

21. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant.

22. The asphalt containing sheet material according to claim 21, wherein:

the second major surface of the fibrous base sheet is essentially free of asphalt.

23. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant with no observable fungi growth.

24. The asphalt containing sheet material according to claim 23, wherein:

the second major surface of the fibrous base sheet is essentially free of asphalt.

25. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation D 2020-92 is fungus resistant.

26. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet without the fungi resistant asphalt layer is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation G 21-96 has a rating of 1 or less.

27. The asphalt containing sheet material according to claim 13, wherein:

the fungi growth-inhibiting agent comprises 2-(4-Thiazolyl) Benzimidazole.

28. The asphalt containing sheet material according to claim 27, wherein:

the fungi resistant asphalt contains between 200 and 2000 ppm 2-(4-Thiazolyl) Benzimidazole.

29. The asphalt containing sheet material according to claim 27, wherein:

the fungi resistant asphalt contains between 300 and 700 ppm 2-(4-Thiazolyl) Benzimidazole.

30. The asphalt containing sheet material according to claim 27, wherein:

the fungi resistant asphalt layer contains about 2 grams of 2-(4-Thiazolyl) Benzimidazole per each 1000 square feet of the fungi resistant asphalt layer.

31. The asphalt containing sheet material according to claim 13, wherein:

the asphalt containing sheet material consists essentially of the fibrous base sheet and the fungi resistant asphalt layer that is substantially coextensive with the second major surface of the fibrous base sheet.

32. The asphalt containing sheet material according to claim 13, wherein:

the fungi resistant asphalt layer contains an odor-reducing additive in an amount sufficient to substantially eliminate odor that would otherwise be emitted by the fungi resistant asphalt layer.

33. The asphalt containing sheet material according to claim 13, wherein:

the fungi growth-inhibiting agent includes two or more fungi growth-inhibiting agents.

34. The asphalt containing sheet material according to claim 33, wherein:

the fungi growth-inhibiting agent includes 2-(4-Thiazolyl) Benzimidazole and Zinc Pyrithione.

35. The asphalt containing sheet material according to claim 13, wherein:

the fibrous base sheet is a fiberboard.

36. The asphalt containing sheet material according to claim 13, wherein:

the asphalt containing sheet material is a roofing material.

50. The asphalt containing sheet material according to claim 32, wherein:

the asphalt containing sheet material consists essentially of the fibrous base sheet and the fungi resistant asphalt layers that are substantially coextensive with the first and second major surfaces of the fibrous base sheet.

37. An asphalt containing sheet material, comprising:

a fibrous base sheet having a first major surface and a second major surface; and

a fungi resistant asphalt layer on the first major surface of the fibrous base sheet and a fungi resistant asphalt layer on the second major surface of the fibrous base sheet that are partially absorbed into the fibrous base sheet;

the fungi resistant asphalt layers comprising an asphalt having a fungi growth-inhibiting agent therein in amounts that result in the fungi resistant asphalt having more fungi growth resistance than the asphalt without the fungi growth-inhibiting agent.

38. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant.

39. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant.

40. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant with no observable fungi growth.

41. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation C 1338-00 is fungi growth resistant with no observable fungi growth.

42. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation D 2020-92 is fungus resistant.

43. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation D 2020-92 is fungus resistant.

44. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is not fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation G 21-96 has a rating of 1 or less.

45. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet without the fungi resistant asphalt layers is fungi growth resistant; and

the asphalt containing sheet material tested in accordance with ASTM Test Designation G 21-96 has a rating of 1 or less.

46. The asphalt containing sheet material according to claim 37, wherein:

the fungi growth-inhibiting agent comprises 2-(4-Thiazolyl) Benzimidazole.

47. The asphalt containing sheet material according to claim 46, wherein:

the asphalt containing sheet material contains between 200 and 2000 ppm 2-(4-Thiazolyl) Benzimidazole.

48. The asphalt containing sheet material according to claim 46, wherein:

the asphalt containing sheet material contains between 300 and 700 ppm 2-(4-Thiazolyl) Benzimidazole.

49. The asphalt containing sheet material according to claim 46, wherein:

the fungi resistant asphalt layers each contain about 2 grams of 2-(4-Thiazolyl) Benzimidazole per each 1000 square feet of the fungi resistant asphalt layer.

51. The asphalt containing sheet material according to claim 37, wherein:

the fungi resistant asphalt layers each contain an odor-reducing additive in an amount sufficient to substantially eliminate odor that would otherwise be emitted by the fungi resistant asphalt layer.

52. The asphalt containing sheet material according to claim 37, wherein:

the fungi growth-inhibiting agent includes two or more fungi growth-inhibiting agents.

53. The asphalt containing sheet material according to claim 52, wherein:

the fungi growth-inhibiting agent includes 2-(4-Thiazolyl) Benzimidazole and Zinc Pyrithione.

54. The asphalt containing sheet material according to claim 37, wherein:

the fibrous base sheet is a fiberboard

55. The asphalt containing sheet material according to claim 37, wherein:

the asphalt sheet material is a roofing material.

56. A fungi resistant asphalt containing sheet material, comprising:

a polymeric film base sheet having a first major surface and a second major surface; and

a fungi resistant asphalt layer on the first major surface of the polymeric film base sheet;

the fungi resistant asphalt layer comprising an asphalt having a fungi growth-inhibiting agent therein in amounts that result in the fungi resistant asphalt having more fungi growth resistance than the asphalt without the fungi growth-inhibiting gent.

57. The fungi resistant asphalt containing sheet material according to claim 56, wherein:

the fungi resistant asphalt layer is partially absorbed into the polymeric film base sheet.

58. The fungi resistant asphalt containing sheet material according to claim 56, including:

a fungi resistant asphalt layer on the second major surface of the polymeric film base sheet;

the fungi resistant asphalt layer comprising an asphalt having a fungi growth-inhibiting agent therein in amounts that result in the fungi resistant asphalt having more fungi growth resistance than the asphalt without the fungi growth-inhibiting agent.

59. The fungi resistant asphalt containing sheet material according to claim 58, wherein:

the fungi resistant asphalt layers are partially absorbed into the polymeric film base sheet.