The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2000
Filed:
Jan. 14, 1999
Applicant:
Inventor:
Peter Schilling, Charleston, SC (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; B01D / ;
U.S. Cl.
CPC ...
524 76 ; 1062731 ; 106277 ; 516113 ; 516116 ;
Abstract
This invention relates to improved bituminous emulsions, specifically to cationic medium-set and slow-set mixing grade emulsions. More particularly, it relates to emulsifying compositions which can be used to produce bituminous emulsions exhibiting high viscosity and low asphalt residues. The emulsifying compositions are combinations of fatty amine and/or polyamine, lignin, and nonionic surfactant. A preferred emulsifying composition can be produced by reacting the combinations of fatty amine and/or polyamine, lignin, and nonionic surfactant with formaldehyde.