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:
Nov. 15, 2011
Filed:
Jun. 24, 2010
Izabela Goc-maciejewska, Skórzewo, PL;
Byong-wa Chun, Rancho Palos Verdes, CA (US);
Piotr Krzyzanowski, Poznan, PL;
Izabela Goc-Maciejewska, Skórzewo, PL;
Byong-wa Chun, Rancho Palos Verdes, CA (US);
Piotr Krzyzanowski, Poznan, PL;
W. R. Grace & Co.-Conn., Columbia, MD (US);
Abstract
Phosphate-containing polycarboxylate polymer dispersant compositions of the invention comprise a polymer made from polyoxyalkylene groups, acrylic acid groups, mono-ester groups, and optionally di-ester and tri-ester groups, all in specific molar ratios. The polymer dispersants of the invention achieve quick mix-in dispersibility, particularly within hydratable cementitious compositions such as concrete, in comparison with polycarboxylate polymer dispersants that do not contain phosphate groups, while having improved initial slump as well as slump retention compared to phosphate-containing polymers of the prior art.