DETERGENT FORMULATION
The present invention provides a non-aqueous liquid, gel or paste composition, comprising a colourant and methylglycine diacetic acid (MGDA) or a salt thereof. The compositions afford enhanced stability of the colourant in the presence of MGDA. The invention also provides a unit dose detergent product comprising the inventive composition, a washing or cleaning process that utilizes this composition or product, and the use of this composition or product for washing or cleaning.
1 . A non-aqueous liquid, gel or paste composition, comprising a colourant and methylglycine diacetic acid or a salt thereof.
2 . The composition as claimed in claim 1 , wherein said methylglycine diacetic acid or salt thereof is in a dispersed phase.
3 . The composition as claimed in claim 2 , wherein said methylglycine diacetic acid or salt thereof is in the form of uncoated, dispersed particles.
4 . The composition as claimed in claim 3 , wherein any co-granulant or excipient in said particles makes up no more than 10% of their weight.
5 . The composition as claimed in claim 3 , wherein said particles comprise powder particles of methylglycine diacetic acid or a salt thereof.
6 . The composition as claimed in claim 1 , wherein the colourant is an organic species and/or a dye.
7 . The composition as claimed in claim 1 , wherein the colourant is hydrophilic.
8 . The composition as claimed in claim 1 , wherein the colourant comprises a metal ion.
9 . The composition as claimed in claim 1 , which does not comprise bleach.
10 . The composition as claimed in claim 1 , comprising 5% to 95% by weight methylglycine diacetic acid or salt(s) thereof.
11 . (canceled)
12 . The composition as claimed in claim 1 , wherein the composition is a detergent composition.
13 . A unit dose detergent product comprising the composition as claimed in claim 1 .
14 . A washing or cleaning process that utilizes the composition as claimed in claim 1 .
15 . Use of the composition as claimed in claim 1 for washing or cleaning.
16 . The composition as claimed in claim 12 , wherein the composition is an automatic machine dishwashing detergent composition.
17 . The unit dose detergent product as claimed in claim 13 , wherein the product is an automatic machine dishwashing product.
18 . The washing or cleaning process as claimed in claim 14 being an automatic machine dishwashing process.
19 . The use as claimed in claim 15 for automatic machine dishwashing.
20 . A composition comprising:
a colorant; and
methylglycine diacetic acid or a salt thereof;
wherein the state of the composition is selected from the group consisting of a non-aqueous liquid, gel and paste; and
wherein the composition comprises 45% to 55%, by weight methylglycine diacetic acid or salt(s) thereof.