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:
Oct. 08, 2019
Filed:
Jun. 28, 2016
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventors:
Charles J. Dubois, Orange, TX (US);
George Wyatt Prejean, Orange, TX (US);
Assignee:
Performance Materials NA, Inc., Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 95/00 (2006.01); C08L 23/08 (2006.01); C08K 5/09 (2006.01); E01C 7/18 (2006.01); E01C 7/35 (2006.01);
U.S. Cl.
CPC ...
C08L 95/00 (2013.01); C08K 5/09 (2013.01); C08L 23/08 (2013.01); C08L 23/0884 (2013.01); C08L 2555/60 (2013.01); C08L 2555/80 (2013.01); E01C 7/18 (2013.01); E01C 7/35 (2013.01);
Abstract
In a process for producing a cross-linked asphalt/polymer composition ('polymer-modified asphalt' or PMA) that comprises or is produced from asphalt and an ethylene copolymer, an anhydride is used as a promoter. The ethylene copolymer comprises copolymerized units derived from ethylene and an epoxy-containing comonomer. An improvement in asphalt properties is demonstrated without the use of an acid catalyst.