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J&J Patents Sunscreen with UV Absorbing Polymer



Published August 2, 2013
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US Patent No. 8,475,774 B2; Johnson & Johnson Consumer Companies has patented a composition comprising a continuous water phase; a discontinuous oil phase comprising a UV-absorbing polyester that is formed by a polycondensation reaction of dimerdiol (monomer 1), di-trimethylolpropane (monomer 2), dimethyladipate (monomer 3) and benzenepropanoic acid (monomer 4), in an amount effective to provide the composition with an SPF of about 2 or more in the absence of a UV-screening compound; and an oil gelling polymer. The mole ratio of the four monomers is selected from the group consisting of 2.4:3.1:4.0:8.0 and 3.4:2.1:4.0:6.0. The discontinuous oil phase is stable in the continuous water phase. The composition is substantially free of a non-polymeric UV-absorber.


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