To provide a method of manufacturing a liquid detergent composition in which the amount used can be reduced even in the use under the coexistence of an oil, and which combines outstanding initial foaming properties and the durability of the foamed volume, and to provide the liquid detergent composition.
The method of manufacturing a liquid detergent composition comprises blending surfactants so that the dynamic surface tension deterioration speed at time t* obtained from the formula [γt=γm+(γ0-γm )/{1+(t/t*)x}] may be 650 mN×m-1×sec-1 or larger under non-coexistence of an oil at 25°C, and 540 mN×m-1×sec-1 or more under coexistence of an oil at 25°C. In addition, the liquid detergent composition includes: an anionic surfactant shown by formula (1): R1-O-(EO)m1-SO3M; an amine oxide type surfactant; and a nonionic surfactant whose carbon chain length is 6-12, wherein the dynamic surface tension deterioration speed is 650 mN×m-1×sec-1 or larger under non-coexistence of an oil at 25°C, and the dynamic surface tension deterioration speed is 540 mN×m-1×sec-1 or larger under coexistence of an oil at 25°C.
KOBAYASHI CHIKA
KANEKO YUKIHIRO
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Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Next Patent: LIQUID DETERGENT COMPOSITION