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:
Nov. 14, 1978
Filed:
Dec. 27, 1977
Inder Mani, Midland, MI (US);
James Peters, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
This invention is directed to cement additives comprising (1) a polymer latex containing up to about 60 parts by weight of latex polymer solids consisting essentially of (A) the polymerized product of (a) a monomer selected from the group consisting of styrene, vinyl toluene and tertiary butyl styrene, (b) an alkyl acrylate or alkyl methacrylate having from 8 to 12 carbon atoms in the alkyl group and (c) arcylamide or methacrylamide, and (B) a butadiene rubber, (2) a nonionic surfactant and (3) a polyorganosiloxane foam depressant; and to portland cement compositions containing these additives, such cement compositions being characterized by having excellent strength and adhesion to cementitious substrates.