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:
Jul. 23, 2002
Filed:
Apr. 17, 2000
Anne Margaret Bacho, Delran, NJ (US);
Frederick Paul Hinz, Jeffersonville, PA (US);
Mark Alan Kesselmayer, Harleysville, PA (US);
Kathleen Anne Koziski, Lansdale, PA (US);
Meredith Ann Morgan, Lansdale, PA (US);
Lori Branham Pfahler, Harleysville, PA (US);
Fergus Stuart McColl, Southbank, AU;
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The open time of a cementitious composition, such as a grout, may be increased by the incorporating therein, as a binder, a polymer composition comprising a film-forming copolymer formed by polymerization of a monomer mixture comprising 1 to 3% of at least one monomer selected from the group of monomers consisting of amides of &agr;,&bgr;-unsaturated C to C carboxylic acids and at least one hydroxy-(C to C )alkyl (meth)acrylate monomer, wherein the total amount of these monomers is from 2 to 7.5% by weight of said monomer mixture.