Polyorganosiloxane emulsion composition and a cosmetic material made therefrom

1. A method of preparing a polyorganosiloxane emulsion composition including (A) 100 parts by weight of a polyorganosiloxane, (B) 1 to 100 parts of a material selected from the group consisting of (i) an N-acylalkyl taurine and (ii) a salt of N-acylalkyl taurine having the general formula:

R 3 —CO—NR 4 —C 2 H 4 —SO 3 M,

wherein R 3 and R 4 are non-substituted monovalent hydrocarbons, and M is selected from the group consisting of the hydrogen atom, an alkali metal, ammonium, and triethanol ammonium, and (C) 30 to 1000 parts of water, said method comprising the step of:

subjecting (a) a polyorganosiloxane with a molecular weight lower than that of component (A) to emulsion and condensation polymerization in water in the presence of component (B).

2. The method as set forth in claim 1 further comprising the step of removing residual cyclic organolisoxane oligomers from component (A) to a content of cyclic organosiloxane oligomer in component (A) of 3.5 weight percent or less.

3. The method according to claim 1 , wherein a content of cyclic organosiloxane oligomer in said component (a) is 2.5 weight percent or less.

4. The method according to claim 1 , wherein a content of cyclic organosiloxane oligomer in said component (a) is 1.0 weight percent or less.

5. The method according to claim 1 , wherein said component (B) is a compound expressed by the following general formula: R 3 —CO—NR 4 —C 2 H 4 —SO 3 M wherein R 3 and R 4 are non-substitute monovalent hydrocarbons, and M is selected from the group consisting of hydrogen atom, alkali metal atom, ammonium, and triethanol ammonium.

6. The method according to claim 1 , wherein said component (B) is selected from the group consisting of N-lauroylmethyl taurine sodium salt, N-myristoymethyl taurine sodium salt, N-oleoymethyl taurine sodium salt, N-stearoylmethyl taurine salt , N-coconut fatty acid methyl taurine sodium salt, N-coconut fatty acid methyl taurine potassium salt, N-coconut fatty acid methyl taurine magnesium salt, N-palmitoylmethyl taurine sodium salt, N-stearoylmethyl taurine sodium salt, and N-cetyloymethyl taurine sodium salt.

7. The method according to claim 5 , wherein said component (B) is selected from the group consisting of N-lauroylmethyl taurine sodium salt, N-myristoymethyl taurine sodium salt, N-oleoylmethyl taurine sodium salt, N-stearoylmethyl taurine sodium salt, N-coconut fatty acid methyl taurine sodium salt, N-coconut fatty acid methyl taurine potassium salt, N-coconut fatty acid methyl taurine magnesium salt, N-palmitoylmethyl taurine sodium salt, N-stearoylmethyl taurine sodium salt, and N-cetyloylmethyl taurine sodium salt.

8. The method according to claim 1 , wherein a salt of an N-acylalky taurine is used as component (B), said salt being used in combination with an inorganic or organic acid.

9. The method according to claim 1 , wherein a content of cyclic organosiloxane tetramer does not exceed 2.0 weight percent.

10. The method according to claim 1 , wherein said component (A) is a polydimethylsiloxane.

11. The method according to claim 1 , wherein the concentration of said component (A) in the emulsion is 5-80 weight percent.

12. The method as set forth in claim 1 , wherein said component (a) is a polyorganosiloxane expressed by the following general formula (I):

HO (R 2 2 SiO) n H

where R 2 is selected from a group consisting of:

(i) substituted monovalent hydrocarbons and

(ii) non-substitute monovalent hydrocarbons, and wherein n has a value, at which the viscosity is within the range of 10 to 30,000 mPa-s at 25° C., and the viscosity of said component (A) is 100 to 100,000,000 mPa-s at 25° C.

13. The method according to claim 12 , wherein a content of cyclic organosiloxane oligomer in said component (a) is 2.5 weight percent or less.

14. The method according to claim 12 , wherein a content of cyclic organosiloxane oligomer in said component (a) is 1.0 weight percent or less.

15. The method according to claim 12 , wherein said component (B) is a compound expressed by the following general formula: R 3 —CO—NR 4 —C 2 H 4 —SO 3 M wherein R 3 and R 4 are non-substitute monovalent hydrocarbons, and M is selected from the group consisting of hydrogen atom, alkali metal atom, ammonium, and triethanol ammonium.

16. The method according to claim 15 , wherein said component (B) is selected from the group consisting of N-lauroylmethyl taurine sodium salt, N-myristoylmethyl taurine sodium salt, N-oleoylmethyl taurine sodium salt, N-stearoylmethyl taurine sodium salt, N-coconut fatty acid methyl taurine sodium salt, N-coconut fatty acid methyl taurine potassium salt, N-coconut fatty acid, methyl taurine magnesium salt, N-palmitoylmethyl taurine sodium salt, N-stearoylmethyl taurine sodium salt, and N-cetyloymethyl taurine sodium salt.

17. The method according to claim 12 , wherein a salt of an N-acylalkyl taurine is used as component (B), said salt being used in combination with an inorganic or organic acid.

18. The method according to claim 12 , wherein a content of cyclic organosiloxane tetramer does not exceed 2.0 weight percent.

19. The method according to claim 12 , wherein the concentration of said component (A) in the emulsion is 5-80 weight percent.

20. A method of preparing a hair care cosmetic, the method comprising:

(I) providing a hair care preparation;

(II) preparing a cosmetic raw material consisting of a polyorganosiloxane emulsion composition including (A) 100 parts by weight of a polyorganosiloxane, (B) 1 to 100 parts of a material selected from the group consisting of (i) an N-acylalkyl taurine and (ii) a salt of N-acylalkyl taurine having the general formula:

R 3 —CO—NR 4 —C 2 H 4 —SO 3 M,

wherein R 3 and R 4 are non-substituted monovalent hydrocarbons, and M is selected from the group consisting of the hydrogen atom, an alkali metal, ammonium, and triethanol ammonium, and (C) 30 to 1000 parts of water, said method comprising the step of:

subjecting (a) a polyorganosiloxane with a molecular weight lower than that of component (A) to emulsion and condensation polymerization in water in the presence of component (B); and

(III) combining the hair care preparation with the cosmetic raw material to prepare a hair care cosmetic.

21. A method of preparing a skin care cosmetic, the method comprising:

(I) providing a skin care preparation;

(II) preparing a cosmetic raw material consisting of a polyorganosiloxane emulsion composition including (A) 100 parts by weight of a polyorganosiloxane, (B) 1 to 100 parts of a material selected from the group consisting of (i) an N-acylalkyl taurine and (ii) a salt of N-acylalkyl taurine having the general formula:

R 3 —CO—NR 4 —C 2 H 4 —SO 3 M,

wherein R 3 and R 4 are non-substituted monovalent hydrocarbons, and M is selected from the group consisting of the hydrogen atom, an alkali metal, ammonium, and triethanol ammonium, and (C) 30 to 1000 parts of water, said method comprising the step of:

subjecting (a) a polyorganosiloxane with a molecular weight lower than that of component (A) to emulsion and condensation polymerization in water in the presence of component (B); and

(III) combining the skin care preparation with the cosmetic raw material to prepare a skin care cosmetic.