US 12,096,769 B2
Mechanism of urea/solid acid interaction under storage conditions and storage stable solid compositions comprising urea and acid
Derrick Anderson, Saint Paul, MN (US); Victor Fuk-Pong Man, Saint Paul, MN (US); Paul Christian, Saint Paul, MN (US); Meghan Babcock, Saint Paul, MN (US); and Altony J. Miralles, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Nov. 8, 2021, as Appl. No. 17/453,891.
Application 17/453,891 is a continuation of application No. 15/909,401, filed on Mar. 1, 2018, granted, now 11,191,264.
Claims priority of provisional application 62/465,434, filed on Mar. 1, 2017.
Prior Publication US 2022/0053757 A1, Feb. 24, 2022
Int. Cl. A01N 25/22 (2006.01); A01N 25/30 (2006.01); A01N 33/12 (2006.01); A01N 47/28 (2006.01); C11D 1/04 (2006.01); C11D 1/12 (2006.01); C11D 1/34 (2006.01); C11D 3/04 (2006.01); C11D 3/20 (2006.01); C11D 3/32 (2006.01); C11D 3/34 (2006.01); C11D 3/36 (2006.01); C11D 3/37 (2006.01); C11D 7/08 (2006.01); C11D 7/26 (2006.01); C11D 7/32 (2006.01); C11D 9/30 (2006.01); C11D 11/00 (2006.01); C11D 11/04 (2006.01)
CPC A01N 25/22 (2013.01) [A01N 25/30 (2013.01); A01N 33/12 (2013.01); A01N 47/28 (2013.01); C11D 1/04 (2013.01); C11D 1/12 (2013.01); C11D 1/34 (2013.01); C11D 3/042 (2013.01); C11D 3/2075 (2013.01); C11D 3/323 (2013.01); C11D 3/3409 (2013.01); C11D 3/3418 (2013.01); C11D 3/3472 (2013.01); C11D 3/361 (2013.01); C11D 3/362 (2013.01); C11D 3/365 (2013.01); C11D 3/37 (2013.01); C11D 7/08 (2013.01); C11D 7/265 (2013.01); C11D 7/3272 (2013.01); C11D 9/30 (2013.01); C11D 11/0082 (2013.01); C11D 11/04 (2013.01)] 14 Claims
 
1. A stabilized solid composition comprising:
a preformed solid complex comprising a urea solidification matrix and an acid, wherein the urea and the acid in the solid complex are in a molar ratio from about 1:3 to about 3:1, wherein the acid is a solid or liquid organic acid and comprises at least one of: monosodium citrate, aspartic acid, and glutamic acid; and
a quaternary ammonium compound having the formula:

OG Complex Work Unit Chemistry
wherein groups R1, R2, R3, and R4 each have less than a C20 chain length, X− is an anionic counteranion selected from the group consisting of chloride, bromide, propionate, methosulphate, saccharinate, ethosulphate, hydroxide, acetate, phosphate, carbonate and nitrate, and wherein the composition is a solid that is soluble in water, and has a pH of about 2 and about 6 in a use solution.