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. 30, 2013
Filed:
May. 31, 2012
Wilfried Adolf Hohn, Erfstadt, DE;
Kirill N. Bakeev, Newark, DE (US);
John Kenneth Bard, Wilmington, DE (US);
Michael Dittel, Dusseldorf, DE;
Teng-shau Young, Wilmington, DE (US);
Wilfried Adolf Hohn, Erfstadt, DE;
Kirill N. Bakeev, Newark, DE (US);
John Kenneth Bard, Wilmington, DE (US);
Michael Dittel, Dusseldorf, DE;
Teng-Shau Young, Wilmington, DE (US);
Hercules Incorporated, Wilmington, DE (US);
Abstract
Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement-based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.