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:
May. 14, 2013
Filed:
Dec. 14, 2011
Tanja Seebeck, Bensheim, DE;
Juergen Tropsch, Roemerberg, DE;
Lars Kissau, Wachenheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A mixed powder or mixed granule for use in detergent formulations for machine dishwashing contains the following components: a) from 10 to 95% by weight of a copolymer of a1) from 50 to 93 mol % of acrylic acid and/or of a water-soluble salt of acrylic acid, a2) from 5 to 30 mol % of methacrylic acid and/or of a water-soluble salt of methacrylic acid, and a3) from 2 to 20 mol % of at least one nonionic monomer, wherein monomers a1) to a3) are copolymerized in a random or block manner, b) from 5 to 80% by weight of a complexing agent selected from the group consisting of a glycine-N,N-diacetic acid derivative and glutamic acid N,N-diacetic acid and salts thereof, c) from 0 to 20% by weight of a polyethylene glycol, of a nonionic surfactant or of a mixture thereof.