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OwnerDavid Machin, Laurent Soubiran +3inventors
InventorsDavid Machin, Laurent Soubiran, Gary Cahill, Shimei Fan, John Francis Hubbard
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A fabric conditioning composition comprising a cationic fabric softening compound dispersed in water is found to have surprisingly improved viscosity stability if a stabilising system comprising at least one salt of a multivalent inorganic anion or non-sequestering multivalent organic anion is present. The invention is particularly suitable for use with quaternary ammonium material comprising a compound having two C12-18 alkyl or alkenyl groups connected to the molecule via at least one ester link. Preferably, the mixture comprises sodium chloride and sodium sulphate. Preferably, there is additionally at least one salt of a univalent anion.
A fabric conditioning composition comprising an ester-linked quaternary ammonium cationic fabric softening compound dispersed in water, the water having dissolved therein at least one alkali metal or alkaline earth metal salt of a multivalent inorganic anion.
A fabric conditioning composition according to any preceding claim, in which the total quantity of salt of multivalent anion is in the range 0.1-2.0 by weight, based on the total weight of the composition.
A fabric conditioning composition according to any preceding claim, further comprising at least one salt of a univalent anion.
A fabric conditioning composition according to any preceding claim, in which the fabric softening compound is a quaternary ammonium material which comprises a compound having two C12-18 alkyl or alkenyl groups connected to the molecule via at least one ester link.
Use of at least one salt of a multivalent inorganic anion or non-sequestering multivalent organic anion to improve the low temperature viscosity stability characteristics of a rinse conditioner composition comprising a cationic fabric softening compound dispersed in water.
Dependencies are inferred from the claim text.