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:
Apr. 24, 2018
Filed:
May. 11, 2012
Lawrence L. Kuo, Acton, MA (US);
Cedrick Favero, Saint Romain le Puy, FR;
Christophe Roux, Saint Just Saint Rambert, FR;
Nathan A. Tregger, Billerica, MA (US);
Lawrence L. Kuo, Acton, MA (US);
Cedrick Favero, Saint Romain le Puy, FR;
Christophe Roux, Saint Just Saint Rambert, FR;
Nathan A. Tregger, Billerica, MA (US);
GCP Applied Technologies Inc., Cambridge, MA (US);
SNF S.A.S., , FR;
Abstract
The present invention provides methods and compositions for treating clay-bearing aggregates, particularly those used for construction purposes, whereby inclusion of fines is maximized due to minimization of clay washing which tends to remove such fines, and whereby performance of the aggregate-containing construction material is enhanced. Exemplary methods comprise introducing to clay a water-soluble, functionalized polyamine comprising a water-soluble polyamine formed by reacting an amine compound with an epoxy compound, the polyamine thus reacted being functionalized through the use of certain halide, sulfate, or epoxy compounds.