Durable silicone emulsion polish

• US 4,600,436 A
• Filed: 05/22/1984
• Issued: 07/15/1986
• Est. Priority Date: 09/27/1982
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Traver, Frank J., Thimineur, Raymond J., Zotto, Anthony A.
• Primary Examiner(s): YARBROUGH, AMELIA
• Application Number:
  US06/613,112
• Time in Patent Office: 784 Days
• Field of Search: 106/3, 106/287.13, 106/287.15, 524/837, 524/838, 525/100, 525/102
• US Class Current: 106/3
• CPC Class Codes: C08G 77/26 nitrogen-containing groups
• CPC Class Codes: C09G 1/16 on natural or synthetic resins

Abstract

Aminofunctional emulsions and aminofunctional silicone polishes are provided which exhibit improved adhesion and resistance to removal by detergent washing when applied to solid surfaces.

Claims

1. A composition comprising an aqueous emulsion prepared by

(A) emulsion polymerizing

(a) a polydiorganosiloxane in

(b) an aqueous medium in the presence of

(c) an emulsifier or mixture of emulsifiers and

(d) optionally, a polymerization catalyst or mixture of polymerization catalysts, and

(B) thereafter stripping cyclic or other low molecular weight siloxanes from said emulsion by heating.

2. A composition as in claim 1 wherein the polydiorganosiloxane is a cyclopolydiorganosiloxane.

3. A composition as in claim 2 wherein the cyclopolydiorganosiloxane has the general formula

4. A composition as in claim 3 wherein substantially all of the cyclopolydiorganosiloxane is octamethylcyclotetrasiloxane.

5. A composition as in claim 1 wherein the aqueous medium is deionized water.

6. A composition as in claim 1 wherein the emulsifier is a cationic emulsifier.

7. A composition as in claim 6 wherein the emulsifier is an ether-type emulsifier.

8. A composition as in claim 6 wherein the emulsifier is an alkylphenoxypolyoxyethylene glycol, a quaternary ammonium salt or mixture thereof.

9. A composition as in claim 6 wherein the emulsifier is octylphenoxypolyoxyethylene glycol, methylpolyoxyethylene (15) cocoammonium chloride, or mixtures thereof.

10. A composition as in claim 1 wherein the polydiorganosiloxane is present in an amount ranging from about 20 to about 60 percent by weight.

11. A composition as in claim 1 wherein the polymerization catalyst is potassium hydroxide.

12. A composition as in claim 1 wherein said polydiorganosiloxane is further emulsion polymerized with an aminofunctional silane prior to stripping.

13. A composition as in claim 12 wherein the aminofunctional silane is 3-aminopropyltrimethoxysilane;

N-2-aminoethyl-3-aminopropyltrimethoxysilane;

N,N-diethyl-3-aminopropyltrimethoxysilane, or mixture thereof.

14. A composition as in claim 1 wherein said polydiorganosiloxane is further emulsion polymerized with an alkyltrialkoxysilane prior to stripping.

15. A composition as in claim 14 wherein the alkyltrialkoxysilane is methyltrimethoxysilane.

16. A composition as in claim 1 wherein said polydiorganosiloxane is further emulsion polymerized with a silane having an unsaturated group bonded thereto.

17. A composition as in claim 16 wherein the silane having an unsaturation group bonded thereto is γ

-methacryloxypropyltrimethoxysilane, cyanoethyltrimethoxysilane or mixture thereof.

18. A composition as in claim 1 wherein said emulsifier functions as a polymerization catalyst.

19. A composition as in claim 1 wherein said polydiorganosiloxane is further emulsion polymerized with an aminofunctional silane and an alkyltrialkoxysilane.

20. A composition as in claim 1 wherein stripping of volatiles is effected by heating at about 100°

C.

21. A composition as in claim 1 wherein stripping of volatiles is effected by heating under reduced pressure.

22. A composition as in claim 1 wherein stripping of volatiles is effected by azeotropic distillation.

23. A method of making an emulsion comprising:

I. emulsifying;

(a) a polydiorganosiloxane in

(b) an aqueous medium in the presence of

(c) an emulsifier or mixture of emulsifiers and

(d) optionally, a polymerization catalyst or mixture of polymerization catalysts,

II. polymerizing said polydiorganosiloxane by emulsion polymerization, and

III. stripping cyclic or other low molecular weight siloxanes from the thus produced emulsion by heating.

24. A method as in claim 23 wherein the polydiorganosiloxane is a cyclopolydiorganosiloxane.

25. A method as in claim 24 wherein the cyclopolydiorganosiloxane has the general formula

26. A method as in claim 25 wherein substantially all of the cyclopolydiorganosiloxane is octamethylcyclotetrasiloxane.

27. A method as in claim 23 wherein the aqueous medium is deionized water.

28. A method as in claim 23 wherein the emulsifier is a cationic emulsifier.

29. A method as in claim 28 wherein the emulsifier is an ether-type emulsifier.

30. A method as in claim 28 wherein the emulsifier is an alkylphenoxypolyoxyethylene glycol, a quaternary ammonium salt or mixture thereof.

31. A method as in claim 28 wherein the emulsifier is octylphenoxypolyoxyethylene glycol, methylpolyoxyethylene (15) cocoammonium chloride, or mixtures thereof.

32. A method as in claim 23 wherein the polydiorganosiloxane is present in an amount ranging from about 20 to about 60 percent by weight.

33. A method as in claim 23 wherein the polymerization catalyst is potassium hydroxide.

34. A method as in claim 23 wherein said polydiorganosiloxane is further emulsified with, prior to emulsion polymerization, an aminofunctional silane.

35. A method as in claim 23 wherein after said polydiorganosiloxane is emulsion polymerized, further emulsion polymerization is effected after adding an aminofunctional silane.

36. A method as in claim 34 wherein the aminofunctional silane is 3-aminopropyltrimethoxysilane;

N-2-aminoethyl-3-aminopropyltrimethoxysilane;

N,N-diethyl-3-aminopropyltrimethoxysilane, or mixture thereof.

37. A method as in claim 35 wherein the aminofunctional silane is 3-aminopropyltrimethoxysilane;

N-2-aminoethyl-3-aminopropyltrimethoxysilane, N,N-diethyl-3-aminopropyltrimethoxysilane, or mixture thereof.

38. A method as in claim 23 wherein said polydiorganosiloxane is further emulsified with, prior to emulsion polymerization, an alkyltrialkoxysilane.

39. A method as in claim 23 wherein after said polydiorganosiloxane is emulsion polymerized, further emulsion polymerization is effected after adding an alkyltrialkoxysilane.

40. A method as in claim 38 wherein said alkyltrialkoxysilane is methyltrimethoxysilane.

41. A method as in claim 39 wherein said alkyltrialkoxysilane is methyltrimethoxysilane.

42. A method as in claim 23 wherein said polydiorganosiloxane is further emulsified with, prior to emulsion polymerization, a silane having an unsaturated group bonded thereto.

43. A method as in claim 23 wherein after said polydiorganosiloxane is emulsion polymerized, further emulsion polymerization is effected after adding a silane having an unsaturated group bonded thereto.

44. A method as in claim 42 wherein the silane having an unsaturated group bonded thereto is γ

-methacrlyloxypropyltrimethoxysilane, cyanoethyltrimethoxysilane, or mixture thereof.

45. A method as in claim 23 wherein the emulsifier and polymerization catalyst are the same compound.

46. A method as in claim 23 wherein said polydiorganosiloxane is further emulsified with, prior to emulsion polymerization, an aminofunctional silane and an alkyltrialkoxysilane.

47. A method as in claim 46 wherein the emulsifier is a cationic emulsifier.

48. A method as in claim 47 wherein the emulsifier is an ether-type emulsifier.

49. A method as in claim 23 wherein stripping of volatiles is effected by heating at about 100°

C.

50. A method as in claim 23 wherein stripping of volatiles is effected by heating under reduced pressure.

51. A method as in claim 23 wherein stripping of volatiles is effected by azeotropic distillation.

52. A silicone emulsion polish composition comprising an admixture of:

I. an aqueous emulsion prepared by

(A) emulsion polymerizing

(a) a polydiorganosiloxane in

(b) an aqueous medium in the presence of

(c) an emulsifier or mixture of emulsifiers and

(d) optionally, a polymerization catalyst or mixture of polymerization catalysts, and

(B) thereafter stripping cyclic or other low molecular weight siloxanes from said emulsion by heating, and

II. a silicone emulsion comprising

(a) a polydiorganosiloxane base polymer fluid having a viscosity from about 50 to about 100,000 cps. at 25°

C.,

(b) water, and

(c) an emulsifier or mixture of emulsifiers.

53. A composition as in claim 52 wherein the polydiorganosiloxane of emulsion I is a cyclopolydiorganosiloxane.

54. A composition as in claim 52 wherein said polydiorganosiloxane of emulsion I is further emulsion polymerized with an aminofunctional silane prior to stripping.

55. A composition as in claim 52 wherein said polydiorganosiloxane of emulsion I is further emulsion polymerized with an alkyltrialkoxysilane prior to stripping.

56. A composition as in claim 52 wherein said polydiorganosiloxane of emulsion I is further emulsion polymerized with a silane having an unsaturated group bonded thereto.

57. A composition as in claim 52 wherein the emulsifier and polymerization catalyst of emulsion I are the same compound.

58. A composition as in claim 52 wherein said polydiorganosiloxane of emulsion I is further emulsion polymerized with an aminofunctional silane and an alkyltrialkoxysilane.