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:
Aug. 27, 2013
Filed:
Jun. 03, 2009
Klaus K. Lorenz, Zangberg, DE;
Alexander Kraus, Evenhausen, DE;
Thomas M. Vickers, Jr., Concord Township, OH (US);
Suzanne Lianopoulos, Euclid, OH (US);
Viswanath Mahadevan, Copley, OH (US);
Klaus K. Lorenz, Zangberg, DE;
Alexander Kraus, Evenhausen, DE;
Thomas M. Vickers, Jr., Concord Township, OH (US);
Suzanne Lianopoulos, Euclid, OH (US);
Viswanath Mahadevan, Copley, OH (US);
Construction Research & Technology GmbH, Trostberg, DE;
Abstract
A non-ionic polyether-polyester copolymer for extending workability to a cementitious mixture containing hydraulic cement and water, wherein the copolymer includes residues of at least the following monomers: Component A including an ethylenically unsaturated carboxylic acid ester monomer having a moiety hydrolysable in the cementitious mixture, wherein the hydrolyzed monomer residue has an active binding site for a component of the cementitious mixture; and, at least one of: Component B including an ethylenically unsaturated, carboxylic acid ester or alkenyl ether monomer having at least one Coxyalkylene side group of about 1 to 30 units; or, Component C including an ethylenically unsaturated, carboxylic acid ester or alkenyl ether monomer having at least one Coxyalkylene side group of 31 to about 350 units; wherein the molar ratio of Component A to the sum of the molar ratios of Component B and Component C is about 1:1 to about 10:1.