Personal Care Compositions Having Improved Compatibility and Providing Improved Sun Protection
First Claim
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1. A personal care composition comprising from 0.1 to 40 weight percent based on the total weight of the personal care composition of a liquid silicone resin comprising the units:
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(PrSiO3/2)m
(Me3SiO1/2)n
(PhSiO3/2)o
(Ph2SiO2/2)p where Pr is propyl, Me is methyl, and Ph is phenyl, m is 0.05 to 0.80, n is 0.75 to 0.20, o is 0 to 0.35, p is 0 to 0.35, m+n is from greater than 0.5 to 1, o+p is 0 to 0.5, n/(m+n+o+p) is at least 0.2, and m+n+o+p is 0.9 to 1.
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Abstract
Personal care composition having improved compatibility and providing improved sun protection are obtained by including a liquid silicone resin having greater than 50 mole percent Me3SiO1/2 and PrSiC3/2 units, where Me is methyl and Pr is propyl in the composition. If desired to enable additional compatibility of ingredients comprising the personal care composition, the liquid silicone resin can also contain PhSiO3/2 or Ph2SiO2/2 units, where Ph is phenyl, or a mixture thereof.
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Citations
17 Claims
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1. A personal care composition comprising from 0.1 to 40 weight percent based on the total weight of the personal care composition of a liquid silicone resin comprising the units:
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(PrSiO3/2)m
(Me3SiO1/2)n
(PhSiO3/2)o
(Ph2SiO2/2)pwhere Pr is propyl, Me is methyl, and Ph is phenyl, m is 0.05 to 0.80, n is 0.75 to 0.20, o is 0 to 0.35, p is 0 to 0.35, m+n is from greater than 0.5 to 1, o+p is 0 to 0.5, n/(m+n+o+p) is at least 0.2, and m+n+o+p is 0.9 to 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A personal care composition suitable for application to the skin, hair, lips, lashes and nails, the improvement comprising the incorporation of from 0.1 to 40 weight percent based on the total weight of the personal care composition of a liquid silicone resin comprising the units:
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(PrSiO3/2)m
(Me3SiO1/2)n
(PhSiO3/2)o
(Ph2SiO2/2)pwhere Pr is propyl, Me is methyl, and Ph is phenyl, m is 0.05 to 0.80, n is 0.75 to 0.20, o is 0 to 0.35, p is 0 to 0.35, m+n is from greater than 0.5 to 1, o+p is 0 to 0.5, n/(m+n+o+p) is at least 0.2, and m+n+o+p is 0.9 to 1.
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10. A personal care composition comprising (a) from 0.1 to 40 weight percent based on the total weight of the personal care composition of a liquid silicone resin comprising the units:
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(PrSiO3/2)m
(Me3SiO1/2)n
(PhSiO3/2)o
(Ph2SiO2/2)pwhere Pr is propyl, Me is methyl, and Ph is phenyl, m is 0.05 to 0.80, n is 0.75 to 0.20, o is 0 to 0.35, p is 0 to 0.35, m+n is from greater than 0.5 to 1, o+p is 0 to 0.5, n/(m+n+o+p) is at least 0.2, and m+n+o+p is 0.9 to 1 and (b) a sunscreen. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification
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Current AssigneeDow Corning Corporation (Dow, Inc.)
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Original AssigneeDow Corning Corporation (Dow, Inc.)
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InventorsPretzer, Paul W., King, Douglas W., Leaym, Tina, Wieber, Gary, Horstman, John Bernard, Pretzer, Maria R., Schmidt, Randall
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current424/59
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CPC Class CodesA61K 8/0229 SticksA61K 8/891 saturated, e.g. dimethicone...A61Q 1/04 for lipsA61Q 17/04 Topical preparations for af...A61Q 19/00 Preparations for care of th...A61Q 5/00 Preparations for care of th...A61Q 5/12 Preparations containing hai...
