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US 5,683,497 AGranted
Asphalt emulsion with lignin-containing emulsifier
AssigneeHercules Incorporated
InventorRichard Robert Suchanec
Life of this patent
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Abstract
Resinous compositions comprising lignin and polymerized rosin. Use of salts of the resinous compositions as concrete air-entraining agents and asphalt emulsifiers.
Claims18
An asphalt emulsion containing an emulsifier comprising alkali metal salt of lignin and alkali metal salt of polymerized rosin.
Dependencies are inferred from the claim text.