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US 9,067,085 B2Granted
Enhanced photoconductivity and SPF of semiconductors
AssigneeEveready Battery Company, Inc.
InventorsLaura A. Spaulding, A. Christopher Pattillo, Patricia L. Scott
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a way to enhance the photoconductivity and/or the SPF of a semiconductor. By dispersing the semiconductor with a compound having multiple phenyl groups in a polar carrier oil, the semiconductor exhibits greatly improved photoconductivity and/or SPF over dispersions comprising the semiconductor alone.
Claims14
A sunscreen composition, comprising:
- (i) a dispersion, wherein said dispersion comprises:
- a. about 1.00 wt. % to about 5.00 wt. %, based on the total weight of the sunscreen composition, of a semiconductor sunscreen active comprising zinc oxide;
- b. a compound having multiple phenyl groups comprising ethylene/butadiene/styrene block copolymer;
- and
- c. a polar carrier oil selected from the group consisting of isopropyl myristate, butyloctyl salicylate, octisalate, isononyl isonanoate, and ethylhexyl benzoate, and any combinations thereof;
- and
- (ii) about 3 wt. % to about 12 wt. %, based on the total weight of the composition, of an additional sunscreen active selected from the group consisting of cinnamate, homosalate, octisalate, oxybenzone, avobenzone, and octocrylene, and any combinations thereof,
- wherein said sunscreen composition has a sunscreen efficiency ratio of at least 3.0:1.
5 more elements
A sunscreen composition, comprising:
- (i) a dispersion, wherein said dispersion comprises:
- a. a semiconductor sunscreen active comprising zinc oxide;
- b. a compound having multiple phenyl groups comprising ethylene/butadiene/styrene block copolymer;
- and
- c. a polar carrier oil selected from the group consisting of isopropyl myristate, butyloctyl salicylate, octisalate, isononyl isonanoate, and ethylhexyl benzoate, and any combinations thereof;
- and
- (ii) about 3 wt. % to about 12 wt. %, based on the total weight of the composition, of an additional sunscreen active selected from the group consisting of cinnamate, homosalate, octisalate, oxybenzone, avobenzone, and octocrylene, and any combinations thereof,
- wherein said sunscreen composition has a sunscreen efficiency ratio of at least 3.0:1.
5 more elements
Dependencies are inferred from the claim text.