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:
Feb. 04, 2025
Filed:
Mar. 24, 2020
Applicant:
Nippon Shokubai Co., Ltd., Osaka, JP;
Inventors:
Assignee:
NIPPON SHOKUBAI CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 24/26 (2006.01); C04B 24/04 (2006.01); C04B 28/02 (2006.01); C04B 40/00 (2006.01); C04B 103/00 (2006.01); C04B 103/40 (2006.01); C08F 220/20 (2006.01); C08F 220/28 (2006.01); C08F 220/56 (2006.01); C08L 33/26 (2006.01);
U.S. Cl.
CPC ...
C04B 24/2652 (2013.01); C04B 24/04 (2013.01); C04B 24/2641 (2013.01); C04B 28/02 (2013.01); C04B 40/0039 (2013.01); C08F 220/20 (2013.01); C08F 220/286 (2020.02); C08F 220/56 (2013.01); C08L 33/26 (2013.01); C04B 24/2647 (2013.01); C04B 2103/0046 (2013.01); C04B 2103/0051 (2013.01); C04B 2103/0062 (2013.01); C04B 2103/408 (2013.01);
Abstract
Provided is an additive for concrete in which viscosity of a cement composition is low and fluidity is high at an initial stage of casting even when the additive is added, and long-term strength of concrete or the like improves by the addition. A cement additive comprising a water-absorbent resin, wherein the water-absorbent resin is formed by polymerizing a monomer mixture containing no less than 50 mol % of a nonionic non-crosslinkable monomer and no less than 0.1 mol % of a nonionic crosslinkable monomer, and a content of an anionic monomer in the monomer mixture is no more than 20 mol %.