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:
Dec. 13, 1994
Filed:
Jul. 09, 1993
Applicant:
Inventors:
Serge Gosset, Lestrem, FR;
Didier Videau, Lille, FR;
Assignee:
Roquette Freres, Lestrem, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106808 ; 106696 ; 106727 ; 106819 ; 106823 ; 524 61 ;
Abstract
The invention relates to an agent increasing the rate of hardening of cements, mortars and concretes while maintaining their workability. It also concerns an adjuvant for cements, mortars and concretes, comprising an effective quantity of said agent, and the cements, mortars and concretes comprising an effective quantity of said agent or said adjuvant. This agent corresponds to the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3, which may be identical or different, denote the hydrogen atom or an alkyl, substituted alkyl, alkene, aryl or aralkyl group,