Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – Chemical modification of asphalt – tar – pitch or resin
Patent
1996-02-12
1997-03-18
Straub, Gary P.
Mineral oils: processes and products
Asphalts, tars, pitches and resins; making, treating and...
Chemical modification of asphalt, tar, pitch or resin
208 22, 208230, 10628403, C10C 120, C10C 302
Patent
active
056119100
ABSTRACT:
In a method for reducing emissions from an asphalt blowing process, an emission reducing additive is added to the asphalt prior to blowing, or early in the blowing process. The emission reducing additive is added in an amount sufficient to reduce the SO.sub.x emissions from the blowing process by at least 25 percent by weight when compared with the same process without the emission reducing additive. The emission reducing additive includes at least two compounds selected from metal hydroxides, metal oxides, metal carbonates and metal bicarbonates, where the metal is selected from sodium, potassium, calcium, magnesium, zinc, copper and aluminum.
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Franzen Michael R.
Marzari Jorge A.
Smith Jeffrey W.
Eckert Inger H.
Evans Linda S.
Gegenheimer C. Michael
Owens--Corning Fiberglas Technology, Inc.
Straub Gary P.
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