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US 4,338,137 AGranted
Asphalt composition for air-blowing
AssigneeChevron Research Company
InventorJudson E. Goodrich
Life of this patent
Estimating the term…
Abstract
A process for air-blowing asphalt in the presence of ferrous chloride and an asphalt composition comprising a major amount of asphalt and a minor but effective amount of ferrous chloride.
Claims10
An asphalt composition comprising 0.01 weight percent to about 5 weight percent ferrous chloride and asphalt in an amount to equal 100 weight percent.
A process for producing blown asphalt which comprises air-blowing an asphalt in the presence of from about 0.01 weight percent to about 5 weight percent ferrous chloride for sufficient time to obtain a preselected softening point.
Dependencies are inferred from the claim text.