US 9,809,785 B2
Use of amino carboxylate for enhancing metal protection in alkaline detergents
Lisa Maureen Sanders, Eagan, MN (US); Andrew M. Jensen, St. Paul, MN (US); and Kristopher Hodgson, Burnsville, MN (US)
Assigned to Ecolab USA Inc., Saint Paul, MN (US)
Filed by Ecolab USA Inc., St. Paul, MN (US)
Filed on Jan. 13, 2016, as Appl. No. 14/994,764.
Application 14/994,764 is a continuation of application No. 14/065,504, filed on Oct. 29, 2013, granted, now 9,267,096.
Prior Publication US 2016/0122689 A1, May 5, 2016
Int. Cl. C11D 1/72 (2006.01); C11D 3/10 (2006.01); C11D 3/33 (2006.01); C11D 7/14 (2006.01); C11D 3/04 (2006.01); C11D 3/00 (2006.01); C11D 3/08 (2006.01); C11D 3/20 (2006.01); C11D 17/00 (2006.01); C11D 1/66 (2006.01)
CPC C11D 3/33 (2013.01) [C11D 1/66 (2013.01); C11D 3/0073 (2013.01); C11D 3/044 (2013.01); C11D 3/08 (2013.01); C11D 3/10 (2013.01); C11D 3/2086 (2013.01); C11D 17/0047 (2013.01); C11D 17/0052 (2013.01); C11D 17/0073 (2013.01)] 18 Claims
 
1. A solid alkaline detergent composition comprising:
from about 0.5 wt. % to about 90 wt. % of an alkalinity source;
from about 1 wt. % to about 7.5 wt. % of a surfactant; and
a metal protecting component comprising from about 30 wt. % to about 70 wt. % of a silicate and from about 0.1 wt. % to about 3.5 wt. % of an amino carboxylate, wherein said amino carboxylate is one or more of ethanoldiglycine, trisodium methylgylcinediacetic acid (MGDA); iminodisuccinic acid; iminodisuccinic acid sodium salt N,N-bis (carboxylatomethyl)-L-glutamic acid (GLDA); iminodisuccinic acid sodium salt (GLDA-Na4); [S—S]-ethylenediaminedisuccinic acid (EDDS); 3-hydroxy-2,2′-iminodisuccinic acid (HIDS), tetrasodium 3-hydroxy-2,2′-iminodisuccinate, wherein said detergent composition does not include an enzyme and wherein said detergent composition does not include an active oxygen bleaching agent.