Abstract: Crosslink agents dispersible in oil or water for polymer modified asphalt. Sulfur is used in combination with hexamethylenetetramine and other adjuvants to form a powder compound suitable for use as is or dispersed in either oil or water.
Type:
Grant
Filed:
August 3, 2018
Date of Patent:
February 16, 2021
Assignee:
DENNIS D. KRIVOHLAVEK AND LUCINDY JUNE KRIVOHLAVEK REVOCABLE FAMILY
Abstract: Asphalt compositions and methods of forming such are described herein. The asphalt compositions and methods of forming such are generally adapted to enable open air processing while producing asphalt compositions that exhibit properties capable of meeting SUPERPAVE™ specifications.
Type:
Grant
Filed:
February 6, 2008
Date of Patent:
November 2, 2010
Assignee:
Fina Technology, Inc.
Inventors:
Paul J. Buras, William Lee, James R. Butler
Abstract: A combination of antioxidants and method of incorporating the antioxidants into an asphalt binder to make a modified asphalt binder are described. The antioxidants comprise a thioester and an aldehyde. The aldehyde and thioester, in a ratio between about 1:100 and about 100:1, are added to an asphalt binder. An acidic catalyst is also added in a concentration between about 0.1 wt % and about 18 wt % of the asphalt binder. The antioxidants, asphalt binder, and catalyst are mixed at a temperature between about 85° C. and about 135° C. for a time between about 30 minutes and about 6 hours. The antioxidants are capable of improving the performance grade of the asphalt binder. The modified asphalt binder possesses superior resistance to oxidative age hardening compared to other modified asphalt binder compositions that incorporate various antioxidants.
Type:
Application
Filed:
March 31, 2010
Publication date:
July 29, 2010
Inventors:
Alex K. Apeagyei, William G. Buttlar, Barry J. Dempsey
Abstract: The invention relates to a process for the preparation of an aqueous dispersion of halogenated vinyl polymers by polymerization, according to which, after polymerization, a basic agent is added in an amount such that the pH of the aqueous dispersion is less than approximately 5. The invention also relates to the aqueous dispersion obtained, which can be coated onto polymeric substrates made of paper or of regenerated cellulose.
Type:
Grant
Filed:
February 24, 2004
Date of Patent:
April 11, 2006
Assignee:
SOLVAY (Société Anonyme)
Inventors:
Yves Vanderveken, Bernard Guenaire, Xavier Bacque
Abstract: An asphalt primer composition which comprises between about 0.8 and about 45 wt. % of a halobenzotrifluoride and between about 55 and about 92 wt. % of liquid cutback asphalt normally employed in building construction and road paving and having a VOC below 200 g/l.
Type:
Grant
Filed:
September 26, 2002
Date of Patent:
February 22, 2005
Assignee:
Building Materials Investment Corporation