Water-in-silicone emulsion based liquid cleaner

1 . A water-in-silicone emulsion comprising:

from 10 weight percent to 35 weight percent of a volatile silicone solvent or silicone solvent blend,

from 0.1 weight percent to 2 weight percent of a primary non-ionic emulsifier free of silicone or a blend of non-ionic emulsifiers free of silicone, based on the total weight of the emulsion;

up to 15 weight percent of a co-solvent, free of silicone, wherein the co-solvent has a solubility in water of <1% at 20° C.; and

from 72 weight percent to 77 weight percent water.

2 . The water-in-silicone emulsion according to claim 1 , wherein the volatile silicone solvent or silicone solvent blend has a vapor pressure at 25° C. of >0.5 mm Hg.

3 . The water-in-silicone emulsion according to claim 2 , wherein the volatile silicone solvent or silicone solvent blend is a volatile cyclomethicone solvent.

4 . The water-in-silicone emulsion according to claim 3 , wherein the volatile cyclomethicone solvent comprises octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane.

5 . The water-in-silicone emulsion according to claim 4 , wherein the volatile silicone solvent or silicone solvent blend comprises from 50 weight % to 99 weight % of octamethylcyclotetrasiloxane and from 1% to 50% of decamethylcyclopentasiloxane based on the total weight of the volatile silicone solvent or silicone solvent blend.

6 . The water-in-silicone emulsion according to claim 1 , wherein the silicone solvent or silicone solvent blend is 10% to 25% by weight of the emulsion.

7 . The water-in-silicone emulsion according to claim 1 , wherein the primary non-ionic emulsifier or blend of non-ionic emulsifiers have a combined HLB value of 3 to 7.

8 . The water-in-silicone emulsion according to claim 7 , wherein the primary non-ionic emulsifier free of silicone or the blend of non-ionic emulsifiers free of silicone having the combined HLB value of 3 to 7 comprise a partially esterified reaction product of a polyol and fatty acid, an ethoxylated fatty acid, an ethoxylated fatty alcohol or a combination thereof.

9 . The water-in-silicone emulsion according to claim 7 , wherein the primary non-ionic emulsifier free of silicone or the blend of non-ionic emulsifiers free of silicone having the combined HLB value of 3 to 7 comprise a partially esterified reaction product of a polyol and a branched saturated fatty acid, an ethoxylated branched fatty acid, an ethoxylated branched fatty alcohol, or a combination thereof.

10 . The water-in-silicone emulsion according to claim 7 , wherein the primary non-ionic emulsifier free of silicone or the blend of non-ionic emulsifiers free of silicone having the combined HLB value of 3 to 7 comprise a partially esterified reaction product of a polyol and isostearic acid, an ethoxylated isostearic acid, an ethoxylated isostearyl alcohol, or a combination thereof.

11 . The water-in-silicone emulsion according to claim 7 , wherein the primary non-ionic emulsifier free of silicone or the blend of non-ionic emulsifiers free of silicone having the combined HLB value of 3 to 7 has a molecular weight <5000 g/mol.

12 . The water-in-silicone emulsion according to claim 1 , further comprising a secondary emulsifier free from silicone.

13 . The water-in-silicone emulsion according to claim 12 , wherein the secondary emulsifier free from silicone is non-ionic.

14 . The water-in-silicone emulsion according to claim 13 , wherein the secondary non-ionic emulsifier free from silicone has an HLB value of 2 to 15.

15 . The water-in-silicone emulsion according to claim 14 , wherein the secondary non-ionic emulsifier free from silicone having an HLB value of 2 to 15 comprises a polyol fatty acid condensate, a fatty acid or a fatty alcohol.

16 . The water-in-silicone emulsion according to claim 14 , wherein the secondary non-ionic emulsifier free from silicone having an HLB value of 2 to 15 comprises an ethoxylated polyol fatty acid condensate, an ethoxylated fatty acid, or an ethoxylated fatty alcohol.

17 . The water-in-silicone emulsion according to claim 14 , wherein the secondary non-ionic emulsifier free from silicone having an HLB value of 2 to 15 comprises an imidazoline.

18 . The water-in-silicone emulsion according to claim 13 , wherein the secondary emulsifier free from silicone is 0.01% to 1% by weight of the emulsion.

19 . The water-in-silicone emulsion according to claim 13 , wherein the primary non-ionic emulsifier free of silicone or blend of non-ionic emulsifiers free of silicone and the secondary emulsifier free from silicone have a combined average HLB of 2 to 8.

20 . The water-in-silicone emulsion according to claim 1 , wherein the cosolvent free of silicone has a vapor pressure less than 0.1 mmHg at 20° C. or a boiling point greater or equal to 216° C.

21 . The water-in-silicone emulsion according to claim 1 , wherein the co-solvent comprises an aliphatic, cycloaliphatic, or aromatic hydrocarbon or mixture thereof.

22 . The water-in-silicone emulsion according to claim 1 , wherein the co-solvent is saturated hydrocarbon co-solvent free of aromatic hydrocarbon.

23 . The water-in-silicone emulsion according to claim 1 , wherein the co-solvent is present from 2.5 percent to 15 percent by weight in the emulsion.

24 . The water-in-silicone emulsion according to claim 1 , wherein the emulsion is free of film-forming chemical components.

25 . The water-in-silicone emulsion according to claim 1 , wherein the emulsion is free of film-forming polymers.

26 . The water-in-silicone emulsion according to claim 1 , wherein the emulsion comprises a Volatile Organic Compound (VOC) content of 25 g/L or less according to SCAQMD Rule 1143.

27 . The water-in-silicone emulsion according to claim 1 , wherein the emulsion comprises a Volatile Organic Compound (VOC) content of 0.5 g/L or less according to CARB Consumer Product regulations.

28 . The water-in-silicone emulsion according to claim 1 , wherein the emulsion applied and spread in a thin layer evaporates completely in <5 minutes to leave a clean, film-free surface.

29 . The water-in-silicone emulsion according to claim 1 , wherein the emulsion has a flash point of >100° F.

30 . The water-in-silicone emulsion according to claim 1 , wherein the emulsion is applied in a thin layer.

31 . A method of cleaning or preparing a surface, the method comprising:

applying the water-in-silicone emulsion according to claim 1 to a surface as a thin film.

32 . The method according to claim 31 , further comprising wiping the water-in-silicone emulsion from the surface.

33 . The method according to claim 31 , wherein the surface is an automotive surface.

34 . A method of cleaning or preparing a surface, the method comprising:

applying the water-in-silicone emulsion according to claim 1 to a surface,

wiping the emulsion from the surface, and

applying paint to the wiped surface.