Concentrated Fabric Conditioner Compositions
A method of making a fabric conditioning composition comprising providing: from 8 to 30% by weight of a quaternary ammonium softening material comprising a mixture of mono-ester, di-ester and tri-ester linked saturated components, a fatty complexing agent selected from fatty acids and fatty alcohols in an amount such that the weight of the mono-ester linked quaternary ammonium material to the fatty complexing agent is from 2.5:1 to 1:2, water, and perfume, the composition being free from non-ionic surfactant and added electrolyte, and subjecting the composition to a high shear and/or milling step.
1 . A method of making a fabric conditioning composition comprising providing:
from 8 to 30% by weight of a quaternary ammonium softening material comprising a mixture of mono-ester, di-ester and tri-ester linked saturated components,
a fatty complexing agent selected from fatty acids and fatty alcohols in an amount such that the weight of the mono-ester linked quaternary ammonium material to the fatty complexing agent is from 2.5:1 to 1:2,
water, and
perfume,
the composition being free from non-ionic surfactant and added electrolyte,
and subjecting the composition to a high shear and/or milling step.
2 . A method of making a fabric conditioning composition as claimed in claim 1 in which the composition is subject to cold milling.
3 . A method of making a fabric conditioning composition as claimed in claim 2 in which the composition is subjected to cold milling for from 1 to 2.5 batch volumes.
4 . A method of making a fabric conditioning composition as claimed in claim 1 in which the fatty complexing agent is a fatty alcohol.
5 . A method of making a fabric conditioning composition as claimed in claim 4 in which the fatty alcohol is a hardened linear C 16 -C 18 alcohol.
6 . A method of making a fabric conditioning composition as claimed in claim 1 in which the quaternary ammonium softening material has the formula (I):
wherein each R is independently selected from a C 5-35 alkyl group, R 1 represents a C 1-4 alkyl or hydroxyalkyl group,
T is
n is O or an integer selected from 1 to 4, m is 1, 2 or 3 and denotes the number of moieties to which it refers that pend directly from the N atom, and X − is an anionic group, such as halides or alkyl sulphates, e.g. chloride, methyl sulphate or ethyl sulphate.
7 . A method of making a fabric conditioning composition as claimed in claim 6 in which the quaternary ammonium softening material is hardened a tallow triethanolamine quaternary ammonium salt.
8 . A method of making a fabric conditioning composition as claimed in claim 7 in which the quaternary salt is based on reaction of 2 moles of hardened tallow fatty acid with 1 mole triethanolamine followed by quaternisation.
9 . A method of making a fabric conditioning composition as claimed in claim 8 in which the quaternary salt is conducted with dimethylsulphate.