A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 8/11 (2006.01) A61K 8/04 (2006.01) A61K 8/72 (2006.01) A61K 8/81 (2006.01) A61Q 17/04 (2006.01) C08F 265/04 (2006.01) C08F 265/06 (2006.01) C08F 285/00 (2006.01)
Patent
CA 2322345
A method for improving the storage stability of personal care formulations containing ultraviolet (UV) radiation-absorbing agents (sunscreen agents) is disclosed. Latex polymer particles containing a void, having a particle size from 50 to 1000 nanometers, and having at least 4% polymerized crosslinker monomer units in the shell portion of the particle are especially effective in maintaining storage stability and effectiveness of sunscreen formulations when added to personal care compositions containing at least one sunscreen agent.
Chang Ching-Jen
Jones Charles Elwood
Weinstein Barry
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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