A cleaning composition may comprise a pH-switchable sudsing system and a cleansing system. The pH-switchable sudsing system may comprise a primary sudsing agent in combination with a pH-switchable co-surfactant. The pH-switchable co-surfactant is selected from diamine molecules having a general formula R1R2—N—R3—N+(CH3)3X−, where R1 is a linear or branched C8 to C16 hydrocarbyl, R2 is a linear or branched C1 to C3 hydrocarbyl, R3 is a linear or branched C3 to C6 hydrocarbylene, and X is a counteranion. The tertiary amine nitrogen of the pH-switchable co-surfactant has a pKa value. When the tertiary amine nitrogen is unprotonated, the pH-switchable co-surfactant may provide a suds-boosting effect in washing solutions at a washing pH above the pKa. When the tertiary amine nitrogen is protonated, the pH-switchable co-surfactant may provide a suds-reducing benefit in rinse waters at a rinse pH below the pKa.
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机译：清洁组合物可以包含pH可切换的泡沫系统和清洁系统。该pH可转换的泡沫体系可包含与pH可转换的辅助表面活性剂结合的主要泡沫剂。可调节pH的助表面活性剂选自具有通式R 1 R 2〜N 3 R 3 ＝ N +（CH 3）3 X ＝的二胺分子，其中R 1为直链或支链的C 8至C 16烃基，R 2为直链或支链的C 1至C 3。 R3为直链或支链的C3至C6亚烃基，X为抗衡阴离子。 pH可切换的辅助表面活性剂的叔胺氮具有pKa值。当叔胺氮未被质子化时，pH可调的辅助表面活性剂可以在洗涤pH值高于pKa的情况下在洗涤溶液中提供起泡沫的作用。当叔胺氮被质子化时，pH可调的辅助表面活性剂可在冲洗pH低于pKa的冲洗水中提供减少泡沫的作用。
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