US 12,187,987 B2
Non-foaming peracetic compositions, methods, and kits for removing biofilms from an enclosed surface
Patrick Marchand, G6P 8B5 (CA); and Audrey-Anne Lafond, Notre-Dame du bon Conseil (CA)
Assigned to SANI-MARC INC., Victoriaville (CA)
Filed by SANI-MARC INC., Victoriaville (CA)
Filed on May 8, 2020, as Appl. No. 16/869,918.
Claims priority of provisional application 62/905,736, filed on Sep. 25, 2019.
Prior Publication US 2021/0087499 A1, Mar. 25, 2021
Int. Cl. C11D 3/39 (2006.01); C11D 1/02 (2006.01); C11D 1/04 (2006.01); C11D 1/72 (2006.01); C11D 1/722 (2006.01); C11D 3/04 (2006.01)
CPC C11D 3/3945 (2013.01) [C11D 1/02 (2013.01); C11D 1/04 (2013.01); C11D 1/72 (2013.01); C11D 1/722 (2013.01); C11D 3/042 (2013.01); C11D 2111/16 (2024.01); C11D 2111/18 (2024.01); C11D 2111/20 (2024.01)] 14 Claims
 
1. An aqueous composition for disruption and/or removal of bacterial biofilms from a surface, comprising:
(i) about 0.03% w/w to about 15% w/w peracetic acid;
(ii) about 0.01% w/w to about 30% w/w of at least one secondary acid selected from the group consisting of nitric acid, sulfuric acid, methane sulfonic acid, citric acid, phosphoric acid, hydrofluoric acid, hydrochloric acid, glycolic acid, formic acid, octanoic acid, phthalic acid, lactic acid, and combinations thereof;
(iii) about 0.001% w/w to about 5% w/w of a non-foaming surfactant;
(iv) less than about 0.1% w/w peroxide; and
(v) about 5% w/w to about 99.8% w/w water;
wherein the non-foaming surfactant is selected from the group consisting of the product secondary polyether polyol (polyalkylene glycol) sold under the trademark Tergitol™ L-62™, the product EO/PO block copolymer (polyalkylene glycol) sold under the trademark Antarox™ L61, the product branched EO/PO alcohol (oxirane, 2-methyl-, polymer with oxirane, monodecyl ether) sold under the trademark Antarox™ LA-EP-16, the product polyethoxylated alcohol (Octenyl succinic acid) sold under the trademark Triton™ DF-12, the mixture of surfactants (ethoxylated alcohols+polyethylene glycol) sold under the trademark Triton™ DF-16, the product alcohol alkoxylate (fatty alcohol ethoxylated) sold under the trademark Plurafac™ SL F180, the product EO/PO block copolymer sold under the trademark Pluronic™ 462 D, the product polyoxypropylene-polyoxyethylene block copolymer (polyoxyalkylene glycol ether) sold under the trademark Hartopol™ 25R2, the product alkylether hydoxypropyl sultaine (butylether hydroxypropyl sultaine+2-ethylhexylether hydroxypropyl sultaine) sold under the trademark Mirataine™ ASC, the product capryleth-9 carboxylic acid sold under the trademark Akypo™ LF-2, the product capryleth-9 carboxylic acid sold under the trademark Akypo™ LF-4, and mixtures thereof.