Oil-in-water emulsion and use thereof

1 . A film-forming oil-in-water emulsion, comprising:

one or more amino polyorganosiloxanes (A1), one or more silicone resins (A2), a surfactant composition (B) and water;

wherein at least 80 mol % of units of the amino polyorganosiloxanes (A1) are selected from those having the following general formulas Ia, Ib II and III:

wherein a has the value 0 or 1;

wherein b has the value 1 or 2;

wherein a+b is equal to 2;

wherein R 1 represents monovalent hydrocarbon groups having 1-40 carbon atoms;

wherein R 2 represents aminoalkyl groups of the general formula IV:

wherein R 5 represents divalent hydrocarbon groups having 1-40 carbon atoms;

wherein R 6 represents divalent hydrocarbon groups having 1-40 carbon atoms, H, hydroxymethyl or alkanoyl;

wherein R 7 represents groups of the general formula V:

wherein x is 0 or an arbitrary integer from 1 to 40;

wherein R 8 represents divalent groups of the general formula VI:

wherein y an arbitrary integer from 1 to 6;

wherein R 9 represents H or hydrocarbon groups having 1-40 carbon atoms;

wherein R 3 represents optionally halogen-substituted hydrocarbon groups having 1-40 carbon atoms;

wherein R 4 represents —OR or —OH groups;

wherein (Ia+Ib)/(II+III), meaning the average ratio of the sum of units of the general formulas Ia and Ib to the sum of units of the general formulas II and III, ranges from 0.5 to 1000, wherein II/III≤1;

wherein the amino polyorganosiloxanes (A1) have a viscosity of from 5,000 to 9,000 mPa's measured at 25° C. according to DIN53019;

wherein at least 80 mol % of units of the silicone resins (A2) are selected from those having the following general formulas VII, VIII, IX and X:

wherein R 10 represents hydrocarbon groups that have 1-40 carbon atoms and are optionally substituted by halogens, or H, —OR or —OH groups;

wherein at least 20 mol % of the units are selected from those having the general formulas IX and X,

wherein at most 30 wt % of R 10 are —OR and/or —OH groups, based on the total weight of the silicone resins (A2);

wherein in the terminal groups of the amino polyorganosiloxanes (A1), the number of moles of hydroxyl groups is greater than that of alkoxy groups; and

wherein the emulsion is used in leave-on or rinse-off hair care products to make hairstyles hold or to maintain the degree of curling of the said hair.

2 . The film-forming oil-in-water emulsion of claim 1 , further comprising a low-viscosity oil (A3) that contains a volatile one in an amount of greater than or equal to 90 wt %; and

wherein the low-viscosity oil (A3) has a viscosity of less than 100 mm 2 /s, measured according to DIN 51562 at 25° C.

3 . The film-forming oil-in-water emulsion of claim 2 , wherein the silicone resins (A2), the amino polyorganosiloxanes (A1) and the low viscosity oil (A3) were mixed to form a transparent homogeneous phase.

4 . The film-forming oil-in-water emulsion of claim 2 , wherein the low-viscosity oil (A3) and the silicone resins (A2) are used in a mass ratio of from 1 to 20.

5 . The film-forming oil-in-water emulsion of claim 1 , comprising:

10-20 wt % of one or more amino polyorganosiloxanes (A1), and/or 0.1-4 wt % of one or more silicone resins (A2), and/or 4-10 wt % of the surfactant composition (B), and water, based on the total weight, as 100 wt %, of the emulsion.

6 . The film-forming oil-in-water emulsion of claim 1 , wherein the silicone resins (A2) comprise at least 80 mol % of units are selected from those having the general formulas VII and X, based on the total units, as 100 mol % of, the silicone resins (A2).

7 . The film-forming oil-in-water emulsion of claim 1 , comprising one or more silicone resins (A2) in an amount of from 0.1 to 2 wt % based on the total weight, as 100 wt %, of the emulsion.

8 . The film-forming oil-in-water emulsion of claim 1 , wherein the rinse-off hair care products are conditioners or hair masks.

9 . The film-forming oil-in-water emulsion of claim 1 , wherein the leave-on hair care products are atmospheric-pressure hairstyling sprays or hairstyling gels.

10 . The film-forming oil-in-water emulsion of claim 1 , wherein the leave-on hair care product is applied to the hair to realize a temporary styling treatment thereon; or

wherein the leave-on hair care product is applied to dry hair that has been treated by a permanent or a temporary hair styling method.

11 . The film-forming oil-in-water emulsion of claim 1 , wherein the rinse-off hair care product is applied to wet hair that are subsequently treated by a permanent or a temporary hair styling method during and/or after a drying process.

12 . The film-forming oil-in-water emulsion of claim 1 , wherein the rinse-off hair care product is applied to wet hair and is then kept in contact with it for at least 1 minute.

13 . The film-forming oil-in-water emulsion of claim 1 , wherein in amino polyorganosiloxanes (A1), II/III≤0.3.

14 . The film-forming oil-in-water emulsion of claim 2 , wherein the mass ratio of the low-viscosity oil (A3) to the silicone resins (A2) is from 1 to 20.

15 . The film-forming oil-in-water emulsion of claim 1 , wherein the one or more silicone resins (A2) are present in an amount of from 0.3 to 0.7 wt %, based on the total weight, as 100 wt %, of the emulsion.

16 . (+) The film-forming oil-in-water emulsion of claim 1 , wherein the one or more silicone resins (A2) are an MQ type resin having units selected from the general formulas VII and X and alkoxy and hydroxyl groups are present in a total amount of 3.3 wt % and the hydroxyl content is less than or equal to 0.3 wt %, based on the total weight of silicone resins.

17 . A film-forming oil-in-water emulsion, comprising:

one or more amino polyorganosiloxanes (A1), one or more silicone resins (A2), a surfactant composition (B) and water;

wherein at least 80 mol % of units of the amino polyorganosiloxanes (A1) are selected from those having the following general formulas Ia, Ib II and III:

wherein a has the value 0 or 1;

wherein b has the value 1 or 2;

wherein a+b is equal to 2;

wherein R 1 represents monovalent hydrocarbon groups having 1-40 carbon atoms;

wherein R 2 represents aminoalkyl groups of the general formula IV:

wherein R 5 represents divalent hydrocarbon groups having 1-40 carbon atoms;

wherein R 6 represents divalent hydrocarbon groups having 1-40 carbon atoms, H, hydroxymethyl or alkanoyl;

wherein R 7 represents groups of the general formula V:

wherein x is 0 or an arbitrary integer from 1 to 40;

wherein R 8 represents divalent groups of the general formula VI:

wherein y an arbitrary integer from 1 to 6;

wherein R 9 represents H or hydrocarbon groups having 1-40 carbon atoms;

wherein R 3 represents optionally halogen-substituted hydrocarbon groups having 1-40 carbon atoms;

wherein R 4 represents —OR or —OH groups;

wherein (Ia+Ib)/(II+III), meaning the average ratio of the sum of units of the general formulas Ia and Ib to the sum of units of the general formulas II and III, ranges from 0.5 to 1000, wherein II/III≤1;

wherein the amino polyorganosiloxanes (A1) have a viscosity of from 4,000 to 6,000 mPa's measured at 25° C. according to DIN53019;

wherein at least 80 mol % of units of the silicone resins (A2) are selected from those having the following general formulas VII, VIII, IX and X:

wherein R 10 represents hydrocarbon groups that have 1-40 carbon atoms and are optionally substituted by halogens, or H, —OR or —OH groups;

wherein at least 20 mol % of the units are selected from those having the general formulas IX and X, wherein at most 30 wt % of R 10 are —OR and/or —OH groups, based on the total weight of the silicone resins (A2);

wherein in the terminal groups of the amino polyorganosiloxanes (A1), the number of moles of hydroxyl groups is greater than that of alkoxy groups; and

wherein the emulsion is used in leave-on or rinse-off hair care products to make hairstyles hold or to maintain the degree of curling of the said hair.

18 . A film-forming oil-in-water emulsion, comprising:

one or more amino polyorganosiloxanes (A1), one or more silicone resins (A2), a low-viscosity oil (A3), a surfactant composition (B) and water;

wherein at least 80 mol % of units of the amino polyorganosiloxanes (A1) are selected from those having the following general formulas Ia, Ib II and III:

wherein a has the value 0 or 1;

wherein b has the value 1 or 2;

wherein a+b is equal to 2;

wherein R 1 represents monovalent hydrocarbon groups having 1-40 carbon atoms;

wherein R 2 represents aminoalkyl groups of the general formula IV:

wherein R 5 represents divalent hydrocarbon groups having 1-40 carbon atoms;

wherein R 6 represents divalent hydrocarbon groups having 1-40 carbon atoms, H, hydroxymethyl or alkanoyl;

wherein R 7 represents groups of the general formula V:

wherein x is 0 or an arbitrary integer from 1 to 40;

wherein R 8 represents divalent groups of the general formula VI:

wherein y an arbitrary integer from 1 to 6;

wherein R 9 represents H or hydrocarbon groups having 1-40 carbon atoms;

wherein R 3 represents optionally halogen-substituted hydrocarbon groups having 1-40 carbon atoms;

wherein R 4 represents —OR or —OH groups;

wherein (Ia+Ib)/(II+III), meaning the average ratio of the sum of units of the general formulas Ia and Ib to the sum of units of the general formulas II and III, ranges from 0.5 to 1000, wherein II/III≤1;

wherein the amino polyorganosiloxanes (A1) have a viscosity of from 3,000 to 9,000 mPa's measured at 25° C. according to DIN53019;

wherein at least 80 mol % of units of the silicone resins (A2) are selected from those having the following general formulas VII, VIII, IX and X:

wherein R 10 represents hydrocarbon groups that have 1-40 carbon atoms and are optionally substituted by halogens, or H, —OR or —OH groups;

wherein at least 20 mol % of the units are selected from those having the general formulas IX and X,

wherein at most 30 wt % of R 10 are —OR and/or —OH groups, based on the total weight of the silicone resins (A2);

wherein in the terminal groups of the amino polyorganosiloxanes (A1), the number of moles of hydroxyl groups is greater than that of alkoxy groups;

wherein the low-viscosity oil (A3) contains a volatile one in an amount of greater than or equal to 90 wt % and a viscosity of less than 100 mm 2 /s, measured according to DIN 51562 at 25° C.; and

wherein the mass ratio of the low-viscosity oil (A3) to the silicone resins (A2) is from 5 to 20; wherein the emulsion is used in leave-on or rinse-off hair care products to make hairstyles hold or to maintain the degree of curling of the said hair.