US 11,834,634 B2
Phosphate-free automatic dishwashing detergent compositions having a protease and a complexing agent
Michelle Jackson, Newcastle upon Tyne (GB); Eva Maria Perez-Prat de Vinuesa, Newcastle upon Tyne (GB); David John Tarbit, Newcastle upon Tyne (GB); Philip Frank Souter, Northumberland (GB); Lilia Maria Babe, Emerald Hills, CA (US); David Aaron Estell, San Mateo, CA (US); Frits Goedegebuur, Vlaardingen (NL); Harm Jan Mulder, Voorhout (NL); Sina Pricelius, Leiden (NL); Lydia Dankmeyer, Rotterdam (NL); Thijs Kaper, Half Moon Bay, CA (US); and Hatice Billur Engin, Mountain View, CA (US)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Dec. 12, 2018, as Appl. No. 16/217,069.
Claims priority of application No. 17208450 (EP), filed on Dec. 19, 2017; application No. 17208474 (EP), filed on Dec. 19, 2017; and application No. 17208519 (EP), filed on Dec. 19, 2017.
Prior Publication US 2019/0185788 A1, Jun. 20, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/386 (2006.01); C12N 9/64 (2006.01); C12N 9/26 (2006.01); C11D 3/20 (2006.01); C11D 3/33 (2006.01); C11D 3/39 (2006.01); C11D 3/22 (2006.01); C12N 9/28 (2006.01)
CPC C11D 3/386 (2013.01) [C11D 3/2086 (2013.01); C11D 3/225 (2013.01); C11D 3/33 (2013.01); C11D 3/3905 (2013.01); C12N 9/2414 (2013.01); C12N 9/2417 (2013.01); C12N 9/6424 (2013.01); C12N 9/6489 (2013.01); C12Y 304/21062 (2013.01); C12Y 302/01001 (2013.01); C12Y 304/16 (2013.01); C12Y 304/17 (2013.01)] 9 Claims
 
1. A phosphate-free automatic dishwashing cleaning composition comprising:
i) a protease variant consisting of an amino acid sequence with at least 92% identity with SEQ ID NO:1, and the amino acid sequence comprising an amino acid substitution at a position corresponding to P54T of SEQ ID NO: 1; and
ii) from 10 to 50% by weight of the composition of a complexing agent system comprising less than 30% by weight of the composition of citric acid, wherein the complexing agent system comprises a complexing agent selected from the group consisting of methyl glycine diacetic acid, glutamic-N,N-diacetic acid, iminodisuccinic acid, carboxy methyl inulin and mixtures thereof.