Use of an ester additive and paving grade asphalt in built up roofing asphalt composition manufacture

Thermally stable built-up roofing asphalt ("BURA") composition comprising a paving grade asphalt is disclosed. The paving grade asphalt has been over-blown to a first softening point and an additive is included in an amount to achieve a second softening point. The additive comprises at lea...

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Bibliographische Detailangaben
Hauptverfasser:	Quinn, Robert Edwin, Franzen, Michael R, Lewandowski, Laurand H
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES BUILDING CANDLES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DETERGENTS DYES FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS,OILS, OR FATTY ACIDS OBTAINED THEREFROM FATTY ACIDS FROM FATS, OILS OR WAXES FATTY ACIDS THEREFROM FILLING PASTES FIXED CONSTRUCTIONS FUELS GUTTERS INKS LUBRICANTS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PEAT PETROLEUM, GAS OR COKE INDUSTRIES POLISHES PYROLIGNEOUS ACID ROOF COVERINGS ROOF-WORKING TOOLS SKY-LIGHTS TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
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Beschreibung
Zusammenfassung:	Thermally stable built-up roofing asphalt ("BURA") composition comprising a paving grade asphalt is disclosed. The paving grade asphalt has been over-blown to a first softening point and an additive is included in an amount to achieve a second softening point. The additive comprises at least at least one ester. The BURA composition is thermally stable at processing temperatures of at least 450° F.