Boron nitride-containing silicone gel composition

• US 20090081316A1
• Filed: 09/20/2007
• Published: 03/26/2009
• Est. Priority Date: 09/20/2007
• Status: Abandoned Application

• Current Assignee: Momentive Performance Materials Incorporated (Momentive Performance Materials Holdings LLC)
• Original Assignee: Momentive Performance Materials Incorporated (Momentive Performance Materials Holdings LLC)
• Inventors: Wahl, Roy Uwe Rojas, Duffy, Janet Lynn
• Application Number:
  US11/903,109
• Publication Number:
  US 20090081316A1
• Time in Patent Office: Days
• US Class Current: 424/657
• CPC Class Codes: A61K 8/042 Gels
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: C08G 77/045 containing less than 25 silicon atoms
• CPC Class Codes: C08G 77/12 containing silicon bound to hydrogen C08G77/045 takes precedence
• CPC Class Codes: C08G 77/14 containing silicon bound to oxygen-containing groups C08G77/045 takes precedence
• CPC Class Codes: C08G 77/20 containing silicon bound to unsaturated aliphatic groups C08G77/045 takes precedence
• CPC Class Codes: C08K 3/38 Boron-containing compounds
• CPC Class Codes: C08L 2666/54 Inorganic substances
• CPC Class Codes: C08L 83/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/04 Polysiloxanes

Abstract

A stable silicone oil composition is provided which comprises:

• • a) at least one silicone gel;
  • b) at least one boron nitride powder (a);
  • c) a static charge-dissipating amount of at least one silicone oil; and,
  • d) optionally, at least one component selected from the group consisting of other silicone, surfactant, emulsifier, solvent, emollient, moisturizer, humectant, pigment, colorant, fragrance, preservative, antioxidant, biocide, biostat, antiperspirant, exfoliant, hormone, enzyme, medicinal, vitamin substance, hydroxy acid, retinol, retinol derivative, niacinamide, skin lightening agent, salt, electrolyte, alcohol, polyol, ester, ultraviolet radiation scattering and/or absorbing agent, botanical extract, peptide, protein, organic oil, gum, saccharide, oligosaccharide, polysaccharide, derivative, wax, film former, thickening agent, particulate filler, plasticizer, humectant, occlusive, sensory enhancer, resin and optically active particle.

Claims

1. A stable boron nitride powder-containing silicone gel composition which comprises:

a) at least one silicone gel;

b) at least one boron nitride powder (a);

c) a static charge-dissipating amount of at least one silicone oil; and

,

d) optionally, at least one component selected from the group consisting of other silicone, surfactant, emulsifier, solvent, emollient, moisturizer, humectant, pigment, colorant, fragrance, preservative, antioxidant, biocide, biostat, antiperspirant, exfoliant, hormone, enzyme, medicinal, vitamin substance, hydroxy acid, retinol, retinol derivative, niacinamide, skin lightening agent, salt, electrolyte, alcohol, polyol, ester, ultraviolet radiation scattering and/or absorbing agent, botanical extract, peptide, protein, organic oil, gum, saccharide, oligosaccharide, polysaccharide, derivative, wax, film former, thickening agent, particulate filler, plasticizer, humectant, occlusive, sensory enhancer, resin and optically active particle.

2. The stable boron nitride powder-containing silicone gel composition of claim 1 wherein silicone gel (a) is at least one member selected from the group consisting of:

(i) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear alkenyl polyorganosiloxane and a hydride resin,

(ii) a gel formed as a reaction product of an epoxy functional hydrido-siloxane said reaction product being formed in an epoxy-gel formation-compatible solvent,

(iii) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear hydrogen polyorganosiloxane and an alkenyl resin,

(iv) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear hydrogen polyorganosiloxane and a linear alkenyl polyorganosiloxane,

(v) a gel formed from a silicone and hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a hydrogen polyorganosiloxane resin and an alkenyl polyorganosiloxane resin,

(vi) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear hydrogen organopoly-siloxane having two or more hydride functionalities per molecule and an alpha, omega reactive organic molecule possessing two or more reactive functionalities per molecule, and

(vii) a gel formed from a polyacrylate siloxane copolymer network swollen in an aqueous and/or non-aqueous swelling liquid.

3. The stable boron nitride powder-containing silicone gel composition of claim 2 wherein the hydrosilylation-compatible solvent is a branched, linear or cyclic silicone oil possessing from 2 to 7 silicon atoms and alkyl groups of from 1 to 30 carbon atoms.

4. The stable boron nitride powder-containing silicone gel composition of claim 2 wherein the hydrosilylation-compatible solvent is a branched, cyclic or linear silicone oil possessing from 3 to 6 silicon atoms and at least one alkyl group of from 3 to 20 carbon atoms.

5. The stable boron nitride powder-containing silicone gel composition of claim 1 wherein the boron nitride powder (b) is of predominantly graphitic, quasigraphitic or turbostratic crystalline morphology.

6. The stable boron nitride powder-containing silicone gel composition of claim 1 wherein silicone oil (c) is a linear, branched or cyclic silicone oil possessing from 2 to 7 silicon atoms and alkyl groups of from 1 to 30 carbon atoms.

7. The stable boron nitride powder-containing silicone gel composition of claim 6 wherein silicone oil (c) is a linear or branched silicone oil possessing from 3 to 6 silicon atoms and at least one alkyl group of from 3 to 20 carbon atoms.

8. The stable boron nitride powder-containing silicone gel composition of claim 7 wherein silicone oil (c) is at least one member selected from the group consisting of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane heptamethylhexyltrisiloxane, heptamethylheptyltrisiloaxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, pentamethylhexyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane and capryl methicone.

9. The stable boron nitride powder-containing silicone gel composition of claim 2 wherein the boron nitride powder (b) is agglomerated or non-agglomerated and is of predominantly graphitic, quasigraphitic or turbostratic crystal morphology.

10. The stable boron nitride powder-containing silicone gel composition of claim 2 wherein silicone oil (c) is a linear, branched or cyclic silicone oil possessing from 2 to 7 silicon atoms and alkyl groups of from 1 to 30 carbon atoms.

11. The stable boron nitride powder-containing silicone gel composition of claim 10 wherein silicone oil (c) is a linear or branched silicone oil possessing from 3 to 6 silicon atoms and at least one alkyl group of from 3 to 20 carbon atoms.

12. The stable boron nitride powder-containing silicone gel composition of claim 11 wherein silicone oil (c) is at least one member selected from the group consisting of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane heptamethylhexyltrisiloxane, heptamethylheptyltrisiloaxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, pentamethylhexyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane and capryl methicone.

13. The stable boron nitride powder-containing silicone gel composition of claim 5 wherein silicone oil (c) is a linear, branched or cyclic silicone oil possessing from 2 to 7 silicon atoms and alkyl groups of from 1 to 30 carbon atoms.

14. The stable boron nitride powder-containing silicone gel composition of claim 13 wherein silicone oil (c) is a linear or branched silicone oil possessing from 3 to 6 silicon atoms and at least one alkyl group of from 3 to 20 carbon atoms.

15. The stable boron nitride powder-containing silicone gel composition of claim 14 wherein silicone oil (c) is at least one member selected from the group consisting of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane heptamethylhexyltrisiloxane, heptamethylheptyltrisiloaxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, pentamethylhexyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane and capryl methicone.

16. The stable boron nitride powder-containing silicone gel composition of claim 1 comprising:

(a) from 10 to 99 weight percent silicone gel(s) (a);

(b) from 0.5 to 50 weight percent boron nitride powder(s) (b);

(c) from 0.5 to 40 weight percent silicone oil(s) (c); and

,

(d) from 0 to 89 weight percent optional component(s) (d).

17. The stable boron nitride powder-containing silicone gel composition of claim 1 comprising:

(a) from 30 to 80 weight percent silicone gel(s) (a);

(b) from 5 to 30 weight percent boron nitride powder(s) (b);

(c) from 5 to 30 weight percent silicone oil(s) (c); and

,

(d) from 0 to 60 weight percent optional component(s) (d).

18. The stable boron nitride powder-containing silicone gel composition of claim 1 comprising:

(a) from 50 to 75 weight percent silicone gel(s) (a);

(b) from 10 to 25 weight percent boron nitride powder(s) (b);

(c) from 0 to 20 weight percent silicone oil(s) (c); and

,

(d) from 0 to 40 weight percent optional component(s) (d).

19. A process for preparing a stable boron nitride powder-containing silicone gel composition comprising:

a) combining a source of silicone gel(s) (a) containing not more than 10 weight percent thereof of non-silicone gel material(s), a source of boron nitride powder(s) (b) and a source of silicone oil(s) (c) to provide a stable, substantially uniform mixture of (a), (b) and (c); and

,

b) optionally, combining the stable, substantially uniform mixture of (a), (b) and (c) with at least one component selected from the group consisting of other silicone, surfactant, emulsifier, solvent, emollient, moisturizer, humectant, pigment, colorant, fragrance, preservative, antioxidant, biocide, biostat, antiperspirant, exfoliant, hormone, enzyme, medicinal, vitamin substance, hydroxy acid, retinal, retinol derivative, niacinamide, skin lightening agent, salt, electrolyte, alcohol, polyol, ester scattering and/or absorbing agent for ultraviolet radiation, botanical extract, peptide, protein, organic oil, gum, saccharide, oligosaccharide, polysaccharide, derivative, wax, film former, thickening agent, particulate filler, plasticizer, humectant, occlusive, sensory enhancer, resin and optically active particle.

20. The process of claim 19 wherein:

a) the source of silicone gel(s) (a) contains at least one member selected from the group consisting of;

(i) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear alkenyl polyorganosiloxane and a hydride resin,

(ii) a gel formed as a reaction product of an epoxy functional hydrido-siloxane said reaction product being formed in an epoxy-gel formation-compatible solvent,

(iii) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear hydrogen polyorganosiloxane and an alkenyl resin,

(iv) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear hydrogen polyorganosiloxane and a linear alkenyl polyorganosiloxane,

(v) a gel formed from a silicone and hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a hydrogen polyorganosiloxane resin and an alkenyl polyorganosiloxane resin,

(vi) a gel formed from a silicone and a hydrosilylation compatible solvent wherein said silicone is prepared by the hydrosilylation of a linear hydrogen organopoly-siloxane having two or more hydride functionalities per molecule and an alpha, omega reactive organic molecule possessing two or more reactive functionalities per molecule,

(vii) a gel formed as a reaction product of a vinyl functional hydrido-siloxane in a hydrosilylation-compatible solvent; and

(viii) a gel formed from a polyacrylate siloxane copolymer network swollen in an aqueous and/or non-aqueous swelling liquid; and

,

b) the source of silicone oil(s) (c) contains at least one linear, branched or cyclic silicone oil possessing from 2 to 7 silicon atoms and alkyl groups of from 1 to 30 carbon atoms.

21. The process of claim 20 wherein the source of silicone oil(s) (c) is, or includes, linear, branched or cyclic silicone oil possessing from 3 to 6 silicon atoms and at least one alkyl group of from 3 to 20 carbon atoms.

22. The process of claim 21 wherein the source of linear, branched or cyclic silicone oil(s) (c) is, or includes, at least one member selected from the group consisting of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, heptamethylhexyltrisiloxane, heptamethylheptyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, pentamethylhexyldisiloxane, decamethyltetrasiloxane, dodecamethylpentasiloxane and capryl methicone.

23. The process of claim 19 wherein the stable, substantially uniform mixture of (a), (b) and (c) contains from 10 to 99 weight percent silicone gel(s), from 0.5 to 50 weight percent boron nitride powder(s) and from 0.5 to 40 weight percent silicone fluid(s).

24. The process of claim 19 wherein the stable, substantially uniform mixture of (a), (b) and (c) contains from 30 to 80 weight percent silicone gel(s), from 5 to 30 weight percent boron nitride powder(s) and from 5 to 30 weight percent silicone fluid(s).

25. The process of claim 19 wherein the stable, substantially uniform mixture of (a), (b) and (c) contains from 50 to 75 weight percent silicone gel(s) (a), from 10 to 25 weight percent boron nitride powder(s) (b) and from 10 to 20 weight percent silicone fluid(s) (c).

26. The process of claim 19 wherein at least some (a) is combined with at least some (b) to provide a pre-mix of (a) and (b), at least some (c) thereafter being combined with the pre-mix of (a) and (b), or at least some (b) is combined with at least some (c) to provide a pre-mix of (b) and (c), at least some (a) thereafter being combined with the premix of (b) and (c), or at least some (a) is combined with at least some (c) to provide a pre-mix of (a) and (c), at least some (b) thereafter being combined with the pre-mix of (a) and (c).

27. The stable boron nitride powder-containing silicone gel composition produced by the process of claim 19 and including at least one component introduced therein in step (b) of the process.

28. The stable boron nitride powder-containing silicone gel composition of claim 27 which is a personal care product.

29. The stable boron nitride powder-containing silicone gel composition produced by the process of claim 26 and including at least one component introduced therein in step (b) of the process.

30. The stable boron nitride powder-containing silicone gel composition of claim 29 which is a personal care product.