US2003207101A1PendingUtilityA1

Composition for asphalt roofing materials

32
Priority: Apr 11, 2000Filed: Apr 11, 2000Published: Nov 6, 2003
Est. expiryApr 11, 2020(expired)· nominal 20-yr term from priority
Inventors:Fred R. HuegeStarr Curtis
E04D 1/26C08K 3/22C08K 2003/2206D06N 5/00Y10T428/25C08K 2003/2217Y10T428/31815
32
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Claims

Abstract

An asphalt roofing composition is provided in the form of a roll or a shingle in which a hot mixture of an asphaltic base and filler is applied to a substrate form, wherein the composition also comprises an amount of Ca(OH) 2 (HL) in order to impart strength and durability to the composition. The composition contains HL between about 1-10%, and preferably between about 3-5%, of the total composition by weight. The filler can be fly ash, CaCO 3 , MgCO 2 .CaCO 3 , MgCO 3 , or other suitable materials known in the art. In a typical embodiment of the invention, the HL is added directly to the asphaltic base of the composition either with the filler, or with filler added after mixing the asphalt and HL.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . An asphalt roofing composition in the form of a roll or a shingle-like structure in which a hot mixture of an asphaltic base and filler is applied to a substrate form, wherein the composition also comprises an amount of an alkaline earth metal hydroxide in order to impart strength and durability to the composition.  
     
     
         2 . The composition of  claim 1 , wherein the alkaline earth metal hydroxide is selected from a group consisting of Ca(OH) 2 , Mg(OH) 2 , and Ca(OH) 2 .Mg(OH) 2 .  
     
     
         3 . The composition of  claim 1 , wherein the alkaline earth metal hydroxide is between about 1-10% by weight of asphalt.  
     
     
         4 . The composition of  claim 1 , wherein the alkaline earth metal hydroxide is between about 3-5% by weight of asphalt.  
     
     
         5 . The composition of  claim 1 , wherein the filler is fly ash.  
     
     
         6 . The composition of  claim 1 , wherein the filler is CaCO 3 .  
     
     
         7 . The composition of  claim 1 , wherein the filler is MgCO 3  or MgCO 2 .CaCO 3 .  
     
     
         8 . The composition of  claim 1 , wherein the alkaline earth metal hydroxide is first added directly to the asphaltic base of the composition.  
     
     
         9 . The composition of  claim 1 , wherein the alkaline earth metal hydroxide is first added directly to the filler of the composition.  
     
     
         10 . The composition of  claim 1 , wherein the alkaline earth metal is added first to the filler then to the asphaltic base of the composition.  
     
     
         11 . The composition of  claim 1 , wherein the composition is between about 30% to 60% asphalt by weight.  
     
     
         12 . An asphalt roofing composition in the form of a roll or a shingle-like structure in which a hot mixture of an asphaltic base, filler, and water is applied to a substrate form, wherein the composition also comprises an amount of an alkaline earth metal oxide in order to impart strength and durability to the composition, the metal oxide reacting with water in the filler to produce the corresponding metal hydroxide.  
     
     
         13 . The composition of  claim 12 , wherein the alkaline earth metal oxide is selected from a group consisting of CaO, MgO, and CaO.MgO.  
     
     
         14 . The composition of  claim 12 , wherein the alkaline earth metal oxide is between about 1-10% by weight of asphalt.  
     
     
         15 . The composition of  claim 12 , wherein the alkaline earth metal oxide is between about 3-5% by weight of asphalt.  
     
     
         16 . The composition of  claim 12 , wherein the filler is fly ash.  
     
     
         17 . The composition of  claim 12 , wherein the filler is CaCO 3 .  
     
     
         18 . The composition of  claim 12 , wherein the filler is MgCO 3  or MgCO 2 .CaCO 3 .  
     
     
         19 . The composition of  claim 12 , wherein the alkaline earth metal oxide is first added directly to the asphaltic base of the composition.  
     
     
         20 . The composition of  claim 12 , wherein the alkaline earth metal oxide is added first to the filler with water, the oxide and water thus reacting to form the corresponding hydroxide, the hydroxide and filler then being added to the asphaltic base of the composition.  
     
     
         21 . The composition of  claim 12 , wherein the composition is between about 30% to 60% asphalt by weight.  
     
     
         22 . A method of forming an asphalt roofing composition in the form of a roll or a shingle-like structure, the method comprising: 
 heating an amount of asphalt;    providing a desired amount of an alkaline earth metal hydroxide;    providing a filler;    combining the asphalt, metal hydroxide, and filler to form the composition; and    placing the composition onto a substrate form and allowing the second hot mixture to cool around the substrate form.    
     
     
         23 . The method of  claim 22 , wherein the hot asphalt and the metal hydroxide are first mixed to form a mixture, and the filler is then added to form the composition.  
     
     
         24 . The method of  claim 22 , wherein the metal hydroxide and filler are first mixed to form a mixture, and the hot asphalt is then added to form the composition.  
     
     
         25 . The method of  claim 22 , wherein the alkaline earth metal hydroxide is selected from a group consisting of Ca(OH) 2 .Mg(OH) 2 , and Ca(OH) 2 .Mg(OH) 2 .  
     
     
         26 . The method of  claim 22 , wherein the alkaline earth metal hydroxide is between about 1-10% by weight of asphalt.  
     
     
         27 . The method of  claim 22 , wherein the alkaline earth metal hydroxide is between about 3-5% by weight of asphalt.  
     
     
         28 . The method of  claim 22 , wherein the composition is between about 30% to 60% asphalt by weight.  
     
     
         29 . The method of  claim 22 , wherein the substrate form is a fiberglass mat.  
     
     
         30 . A method of forming an asphalt roofing composition in the form of a roll or a shingle-like structure, the method comprising: 
 heating an amount of asphalt;    providing a desired amount of an alkaline earth metal oxide;    providing a filler and water;    combining the asphalt, metal oxide, water and filler to form the composition; and    placing the composition onto a substrate form and allowing the second hot mixture to cool around the substrate form.    
     
     
         31 . The method of  claim 30 , wherein the metal hydroxide and filler are first mixed with water to form a mixture, and the hot asphalt then being added to form the composition.  
     
     
         32 . The method of  claim 30 , wherein the alkaline earth metal oxide is selected from a group consisting of CaO, MgO, and CaO.MgO.  
     
     
         33 . The method of  claim 30 , wherein the alkaline earth metal oxide is between about 1-10% by weight of asphalt.  
     
     
         34 . The method of  claim 30 , wherein the alkaline earth metal oxide is between about 3-5% by weight of asphalt.  
     
     
         35 . The method of  claim 30 , wherein the composition is between about 30% to 60% asphalt by weight.  
     
     
         36 . The method of  claim 30 , wherein the substrate form is a fiberglass mat.

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