Dry cleaning process
View Patent ↗A dry cleaning process for in-home dry cleaning comprising a low-aqueous dry cleaning step of contacting a laundry article with a low-aqueous dry cleaning composition, wherein said composition comprises a non-flammable, non-chlorine containing organic dry cleaning solvent, water and surfactant, whereby the water to cloth ratio (w/w) is less than 0.45 and the water to surfactant ratio (w/w) is at most 1.5, wherein said organic dry cleaning solvent is selected from hydrofluorocarbon, hydrofluoroether and siloxane solvent.
1. A dry cleaning process for in-home dry cleaning consisting of a first step of contacting a laundry article with a low-aqueous dry cleaning composition, wherein said composition comprises a non-flammable, non-chlorine containing organic dry cleaning solvent, water and surfactant, whereby the water to cloth ratio (w/w) is less than 0.25 and the water to surfactant ratio (w/w) is at most 1.5, wherein said organic dry cleaning solvent is selected from hydrofluorocarbon, hydrofluoroether and siloxane solvent, whereby the liquid to cloth ratio (w/w) is at most 10; and a subsequent step of rinsing the article with only dry cleaning solvent comprising
0 to 0.0001 wt. % of a surfactant;
0 wt. % of water;
0 to 50 wt. % of a cosolvent and
a non-flammable, non-chlorine containing organic dry cleaning solvent.
2. A dry cleaning according to process for in-home dry cleaning claim 1 , whereby said liquid to cloth ratio (w/w) is at most 7.
3. A dry cleaning process for in-home dry cleaning according to claim 1 wherein the surfactant comprises at least one polar hydrophilic group selected from —SO 4 M, —SO 3 M, —PO 4 M 2 , —PO 3 M 2 ,—CO 2 M and mixtures thereof wherein each M can be independently selected from the group including H, NR 4 , Na, K and Li, wherein each R is independently selected from H and C 1-4 alkyl radical.
4. A dry cleaning process for in-home dry cleaning according to claim 1 wherein the organic dry cleaning solvent is selected from the group consisting of the isomers of nonafluoromethoxybutane, nonafluoroethoxybutane and decafluoropentane, octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane, decamethyl tetrasiloxane, dodecamethyl pentasiloxane and mixtures thereof.
5. A dry cleaning process for in-home dry cleaning according to claim 1 whereby the laundry article is stained with domestic stain material selected from kitchen grease, particulate soil and mixtures thereof.
6. A dry cleaning process for in-home dry cleaning according to claim 1 wherein the water to cloth ratio (w/w) is less than 0.25 in each step of the dry cleaning process wherein the LCR is more than 1.