US 12,104,144 B2
Textile bleaching and disinfecting using the mixture of hydrophilic and hydrophobic peroxycarboxylic acid composition
Junzhong Li, Saint Paul, MN (US); Allison Prideaux, Saint Paul, MN (US); David Dotzauer, Saint Paul, MN (US); Jonathan P. Fast, Saint Paul, MN (US); and Richard Staub, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Jun. 6, 2023, as Appl. No. 18/330,094.
Application 18/330,094 is a continuation of application No. 16/946,329, filed on Jun. 17, 2020, granted, now 11,713,436.
Claims priority of provisional application 62/862,194, filed on Jun. 17, 2019.
Prior Publication US 2023/0313076 A1, Oct. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/48 (2006.01); C11D 1/14 (2006.01); C11D 3/395 (2006.01); C11D 11/00 (2006.01)
CPC C11D 3/48 (2013.01) [C11D 1/143 (2013.01); C11D 3/3955 (2013.01); C11D 3/3956 (2013.01); C11D 2111/12 (2024.01)] 16 Claims
OG exemplary drawing
 
1. A method of bleaching and disinfecting laundry articles comprising:
forming a mixed peroxycarboxylic acid bleaching and disinfectant composition that is free of peroxy sulfonated oleic acid (PSOA) and sulfonated oleic acid (SOA);
contacting a soiled article or surface with the composition in a laundry machine at a temperature between about 25° C. and about 50° ° C. and a use pH of at least about 6;
disinfecting the article or surface;
bleaching the article or surface; and
draining and/or rinsing the composition from the laundry machine;
wherein the composition comprises:
from about 0.1 wt-% to about 40 wt-% of a hydrophilic C1-C4 peroxycarboxylic acid;
from about 0.01 wt-% to about 20 wt-% of a hydrophobic C5-C22 peroxycarboxylic acid;
a C1-C4 carboxylic acid;
a C5-C22 carboxylic acid;
an oxidizing agent;
from about 0.01 wt-% to about 10 wt-% of a stabilizing agent, wherein the stabilizing agent is dipicolinic acid;
a peroxycarboxylic acid-stable surfactant coupler having a critical micelle concentration of between 0.1 g/L to about 10 g/L, wherein the coupler is an anionic surfactant; and
at least one additional agent.